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MCP79412.cpp@0:04311b121ac4, 2018-07-23 (annotated)
- Committer:
- JackB
- Date:
- Mon Jul 23 12:24:33 2018 +0000
- Revision:
- 0:04311b121ac4
MCP79412
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JackB | 0:04311b121ac4 | 1 | #include "MCP79412.h" |
JackB | 0:04311b121ac4 | 2 | |
JackB | 0:04311b121ac4 | 3 | MCP79412::MCP79412(PinName sda, PinName scl) : _i2c(sda, scl) |
JackB | 0:04311b121ac4 | 4 | { |
JackB | 0:04311b121ac4 | 5 | _address_RTC = MCP79412_RTC_ADDR << 1; |
JackB | 0:04311b121ac4 | 6 | squareWave(SQWAVE_1_HZ); |
JackB | 0:04311b121ac4 | 7 | // setTimeZone(1); |
JackB | 0:04311b121ac4 | 8 | // dayLightSaving = true; |
JackB | 0:04311b121ac4 | 9 | setI2Cfrequency(400000); |
JackB | 0:04311b121ac4 | 10 | } |
JackB | 0:04311b121ac4 | 11 | |
JackB | 0:04311b121ac4 | 12 | void MCP79412::setI2Cfrequency(int freq) |
JackB | 0:04311b121ac4 | 13 | { |
JackB | 0:04311b121ac4 | 14 | _i2c.frequency(freq); |
JackB | 0:04311b121ac4 | 15 | } |
JackB | 0:04311b121ac4 | 16 | |
JackB | 0:04311b121ac4 | 17 | // get a uint8_t containing just the requested bits |
JackB | 0:04311b121ac4 | 18 | // pass the register address to read, a mask to apply to the register and |
JackB | 0:04311b121ac4 | 19 | // an uint* for the output |
JackB | 0:04311b121ac4 | 20 | // you can test this value directly as true/false for specific bit mask |
JackB | 0:04311b121ac4 | 21 | // of use a mask of 0xff to just return the whole register uint8_t |
JackB | 0:04311b121ac4 | 22 | // returns true to indicate success |
JackB | 0:04311b121ac4 | 23 | /** Get flag |
JackB | 0:04311b121ac4 | 24 | * @param reg : register address |
JackB | 0:04311b121ac4 | 25 | * @param mask : flag mask |
JackB | 0:04311b121ac4 | 26 | * @return The register content |
JackB | 0:04311b121ac4 | 27 | */ |
JackB | 0:04311b121ac4 | 28 | bool MCP79412::getFlag(char reg, char mask, char *flag) |
JackB | 0:04311b121ac4 | 29 | { |
JackB | 0:04311b121ac4 | 30 | char buf[1]; |
JackB | 0:04311b121ac4 | 31 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 32 | int w = _i2c.write(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 33 | int r = _i2c.read(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 34 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 35 | // return only requested flag |
JackB | 0:04311b121ac4 | 36 | *flag = (buf[0] & mask); |
JackB | 0:04311b121ac4 | 37 | return flag == 0 ? false : true; |
JackB | 0:04311b121ac4 | 38 | } |
JackB | 0:04311b121ac4 | 39 | |
JackB | 0:04311b121ac4 | 40 | // set/clear bits in a uint8_t register, or replace the uint8_t altogether |
JackB | 0:04311b121ac4 | 41 | // pass the register address to modify, a uint8_t to replace the existing |
JackB | 0:04311b121ac4 | 42 | // value with or containing the bits to set/clear and one of |
JackB | 0:04311b121ac4 | 43 | // MCP79412_SET/MCP79412_CLEAR/MCP79412_REPLACE |
JackB | 0:04311b121ac4 | 44 | // returns true to indicate success |
JackB | 0:04311b121ac4 | 45 | /** Set flag |
JackB | 0:04311b121ac4 | 46 | * @param reg : register address |
JackB | 0:04311b121ac4 | 47 | * @param bits : bits to set or reset |
JackB | 0:04311b121ac4 | 48 | * @param mode : MCP79412_REPLACE, MCP79412_SET, MCP79412_CLEAR |
JackB | 0:04311b121ac4 | 49 | * @return none |
JackB | 0:04311b121ac4 | 50 | */ |
JackB | 0:04311b121ac4 | 51 | void MCP79412::setFlag(char reg, char bits, char mode) |
JackB | 0:04311b121ac4 | 52 | { |
JackB | 0:04311b121ac4 | 53 | char buf[2]; |
JackB | 0:04311b121ac4 | 54 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 55 | // get status register |
JackB | 0:04311b121ac4 | 56 | int w = _i2c.write(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 57 | int r = _i2c.read(_address_RTC, buf+1, 1); |
JackB | 0:04311b121ac4 | 58 | // clear the flag |
JackB | 0:04311b121ac4 | 59 | if (mode == MCP79412_REPLACE) |
JackB | 0:04311b121ac4 | 60 | buf[1] = bits; |
JackB | 0:04311b121ac4 | 61 | else if (mode == MCP79412_SET) |
JackB | 0:04311b121ac4 | 62 | buf[1] |= bits; |
JackB | 0:04311b121ac4 | 63 | else |
JackB | 0:04311b121ac4 | 64 | buf[1] &= ~bits; |
JackB | 0:04311b121ac4 | 65 | int w2 = _i2c.write(_address_RTC, buf, 2); |
JackB | 0:04311b121ac4 | 66 | _error = ((w != 0) || (r != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 67 | } |
JackB | 0:04311b121ac4 | 68 | |
JackB | 0:04311b121ac4 | 69 | // read a register |
JackB | 0:04311b121ac4 | 70 | int MCP79412::readRegister(char reg) |
JackB | 0:04311b121ac4 | 71 | { |
JackB | 0:04311b121ac4 | 72 | // int w = _i2c.write(_address_RTC, ®, 1); |
JackB | 0:04311b121ac4 | 73 | // char rtn; |
JackB | 0:04311b121ac4 | 74 | // int r = _i2c.read(_address_RTC, &rtn, 1); |
JackB | 0:04311b121ac4 | 75 | // _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 76 | // return rtn; |
JackB | 0:04311b121ac4 | 77 | |
JackB | 0:04311b121ac4 | 78 | char buf[1]; |
JackB | 0:04311b121ac4 | 79 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 80 | int w = _i2c.write(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 81 | int r = _i2c.read(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 82 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 83 | return(buf[0]); |
JackB | 0:04311b121ac4 | 84 | } |
JackB | 0:04311b121ac4 | 85 | |
JackB | 0:04311b121ac4 | 86 | // read registers |
JackB | 0:04311b121ac4 | 87 | void MCP79412::readRegisters(char reg, char *outbuf, char length) |
JackB | 0:04311b121ac4 | 88 | { |
JackB | 0:04311b121ac4 | 89 | char buf[1]; |
JackB | 0:04311b121ac4 | 90 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 91 | int w = _i2c.write(_address_RTC, buf, 1); |
JackB | 0:04311b121ac4 | 92 | int r = _i2c.read(_address_RTC, outbuf, length); |
JackB | 0:04311b121ac4 | 93 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 94 | } |
JackB | 0:04311b121ac4 | 95 | |
JackB | 0:04311b121ac4 | 96 | // write a register |
JackB | 0:04311b121ac4 | 97 | void MCP79412::writeRegister(int reg, char uint8_t) |
JackB | 0:04311b121ac4 | 98 | { |
JackB | 0:04311b121ac4 | 99 | char buf[2]; |
JackB | 0:04311b121ac4 | 100 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 101 | buf[1] = uint8_t; |
JackB | 0:04311b121ac4 | 102 | int w = _i2c.write(_address_RTC, buf, 2); |
JackB | 0:04311b121ac4 | 103 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 104 | } |
JackB | 0:04311b121ac4 | 105 | |
JackB | 0:04311b121ac4 | 106 | // write registers |
JackB | 0:04311b121ac4 | 107 | void MCP79412::writeRegisters(int reg, char *inbuf, char length) |
JackB | 0:04311b121ac4 | 108 | { |
JackB | 0:04311b121ac4 | 109 | char buf[32]; |
JackB | 0:04311b121ac4 | 110 | buf[0] = reg; |
JackB | 0:04311b121ac4 | 111 | for (int i = 1; i <= length; i++) { |
JackB | 0:04311b121ac4 | 112 | buf[i] = inbuf[i-1]; |
JackB | 0:04311b121ac4 | 113 | } |
JackB | 0:04311b121ac4 | 114 | int w = _i2c.write(_address_RTC, buf, length+1); |
JackB | 0:04311b121ac4 | 115 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 116 | } |
JackB | 0:04311b121ac4 | 117 | |
JackB | 0:04311b121ac4 | 118 | |
JackB | 0:04311b121ac4 | 119 | // Function to read the mac address from the eeprom |
JackB | 0:04311b121ac4 | 120 | void MCP79412::getMacAddress(char *mac_address) |
JackB | 0:04311b121ac4 | 121 | { |
JackB | 0:04311b121ac4 | 122 | char buf[1]; |
JackB | 0:04311b121ac4 | 123 | buf[0] = MAC_LOCATION; |
JackB | 0:04311b121ac4 | 124 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 125 | int r = _i2c.read(MCP79412_EEPROM_ADDR, mac_address, 6); |
JackB | 0:04311b121ac4 | 126 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 127 | } |
JackB | 0:04311b121ac4 | 128 | |
JackB | 0:04311b121ac4 | 129 | // Unlock the unique id area and write in the mac address |
JackB | 0:04311b121ac4 | 130 | void MCP79412::writeMacAddress(char *mac_address) |
JackB | 0:04311b121ac4 | 131 | { |
JackB | 0:04311b121ac4 | 132 | char buf[7]; |
JackB | 0:04311b121ac4 | 133 | unlockUniqueID(); |
JackB | 0:04311b121ac4 | 134 | buf[0] = MAC_LOCATION; |
JackB | 0:04311b121ac4 | 135 | for (int i = 1; i <= 6; i++) { |
JackB | 0:04311b121ac4 | 136 | buf[i] = mac_address[i-1]; |
JackB | 0:04311b121ac4 | 137 | } |
JackB | 0:04311b121ac4 | 138 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 7); |
JackB | 0:04311b121ac4 | 139 | |
JackB | 0:04311b121ac4 | 140 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 141 | } |
JackB | 0:04311b121ac4 | 142 | |
JackB | 0:04311b121ac4 | 143 | // Unlock the unique id area ready for writing |
JackB | 0:04311b121ac4 | 144 | void MCP79412::unlockUniqueID() |
JackB | 0:04311b121ac4 | 145 | { |
JackB | 0:04311b121ac4 | 146 | // Write 0x55 to the memory location 0x09 |
JackB | 0:04311b121ac4 | 147 | char buf[2]; |
JackB | 0:04311b121ac4 | 148 | buf[0] = UNLOCK_ID_REG; |
JackB | 0:04311b121ac4 | 149 | buf[1] = UNLOCK_ID_CODE1; |
JackB | 0:04311b121ac4 | 150 | int w1 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 151 | |
JackB | 0:04311b121ac4 | 152 | // Write 0xAA to the memory location 0x09 |
JackB | 0:04311b121ac4 | 153 | buf[0] = UNLOCK_ID_REG; |
JackB | 0:04311b121ac4 | 154 | buf[1] = UNLOCK_ID_CODE2; |
JackB | 0:04311b121ac4 | 155 | int w2 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 156 | |
JackB | 0:04311b121ac4 | 157 | _error = ((w1 != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 158 | } |
JackB | 0:04311b121ac4 | 159 | |
JackB | 0:04311b121ac4 | 160 | // Set the date/time, set to 24hr and enable the clock |
JackB | 0:04311b121ac4 | 161 | // (assumes you're passing in valid numbers) |
JackB | 0:04311b121ac4 | 162 | void MCP79412::setRtcDateTime( |
JackB | 0:04311b121ac4 | 163 | uint8_t second, // 0-59 |
JackB | 0:04311b121ac4 | 164 | uint8_t minute, // 0-59 |
JackB | 0:04311b121ac4 | 165 | uint8_t hour, // 1-23 |
JackB | 0:04311b121ac4 | 166 | uint8_t dayOfWeek, // 1-7 |
JackB | 0:04311b121ac4 | 167 | uint8_t dayOfMonth, // 1-31 |
JackB | 0:04311b121ac4 | 168 | uint8_t month, // 1-12 |
JackB | 0:04311b121ac4 | 169 | uint8_t year) // 0-99 |
JackB | 0:04311b121ac4 | 170 | { |
JackB | 0:04311b121ac4 | 171 | char buf[8]; |
JackB | 0:04311b121ac4 | 172 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 173 | buf[1] = decToBcd(second) & 0x7f; // set seconds and disable clock (01111111, Bit 7, ST = 0) |
JackB | 0:04311b121ac4 | 174 | buf[2] = decToBcd(minute) & 0x7f; // set minutes (01111111) |
JackB | 0:04311b121ac4 | 175 | buf[3] = decToBcd(hour) & 0x3f; // set hours and to 24hr format (00111111, Bit 6 = 0) |
JackB | 0:04311b121ac4 | 176 | buf[4] = _BV(VBATEN) | (decToBcd(dayOfWeek) & 0x07); // set the day and enable battery backup (00000111)|(00001000, Bit 3 = 1) |
JackB | 0:04311b121ac4 | 177 | buf[5] = decToBcd(dayOfMonth) & 0x3f; // set the date in month (00111111) |
JackB | 0:04311b121ac4 | 178 | buf[6] = decToBcd(month) & 0x1f; // set the month (00011111) |
JackB | 0:04311b121ac4 | 179 | buf[7] = decToBcd(year); // set the year (11111111) |
JackB | 0:04311b121ac4 | 180 | int w1 = _i2c.write(MCP79412_RTC_ADDR, buf, 8); |
JackB | 0:04311b121ac4 | 181 | |
JackB | 0:04311b121ac4 | 182 | // Start Clock: |
JackB | 0:04311b121ac4 | 183 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 184 | buf[1] = _BV(ST) | decToBcd(second); // set seconds and enable clock (10000000) |
JackB | 0:04311b121ac4 | 185 | int w2 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 186 | |
JackB | 0:04311b121ac4 | 187 | _error = ((w1 != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 188 | } |
JackB | 0:04311b121ac4 | 189 | |
JackB | 0:04311b121ac4 | 190 | // Get the date/time |
JackB | 0:04311b121ac4 | 191 | void MCP79412::getRtcDateTime( |
JackB | 0:04311b121ac4 | 192 | uint8_t *second, |
JackB | 0:04311b121ac4 | 193 | uint8_t *minute, |
JackB | 0:04311b121ac4 | 194 | uint8_t *hour, |
JackB | 0:04311b121ac4 | 195 | uint8_t *dayOfWeek, |
JackB | 0:04311b121ac4 | 196 | uint8_t *dayOfMonth, |
JackB | 0:04311b121ac4 | 197 | uint8_t *month, |
JackB | 0:04311b121ac4 | 198 | uint8_t *year) |
JackB | 0:04311b121ac4 | 199 | { |
JackB | 0:04311b121ac4 | 200 | char buf[8]; |
JackB | 0:04311b121ac4 | 201 | |
JackB | 0:04311b121ac4 | 202 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 203 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 204 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 7); |
JackB | 0:04311b121ac4 | 205 | |
JackB | 0:04311b121ac4 | 206 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 207 | |
JackB | 0:04311b121ac4 | 208 | // A few of these need masks because certain bits are control bits |
JackB | 0:04311b121ac4 | 209 | *second = bcdToDec(buf[0] & 0x7f); // 01111111 0-59 |
JackB | 0:04311b121ac4 | 210 | *minute = bcdToDec(buf[1] & 0x7f); // 01111111 0-59 |
JackB | 0:04311b121ac4 | 211 | *hour = bcdToDec(buf[2] & 0x3f); // 00111111 1-23 |
JackB | 0:04311b121ac4 | 212 | *dayOfWeek = bcdToDec(buf[3] & 0x07); // 00000111 1-7 |
JackB | 0:04311b121ac4 | 213 | *dayOfMonth = bcdToDec(buf[4] & 0x3f); // 00111111 1-31 |
JackB | 0:04311b121ac4 | 214 | *month = bcdToDec(buf[5] & 0x1f); // 00011111 1-12 |
JackB | 0:04311b121ac4 | 215 | *year = bcdToDec(buf[6]); // 11111111 0-99 |
JackB | 0:04311b121ac4 | 216 | } |
JackB | 0:04311b121ac4 | 217 | |
JackB | 0:04311b121ac4 | 218 | bool MCP79412::checkTimeLost(void) |
JackB | 0:04311b121ac4 | 219 | { |
JackB | 0:04311b121ac4 | 220 | char buf[8]; |
JackB | 0:04311b121ac4 | 221 | uint8_t second, minute, hour, dayOfWeek, dayOfMonth, month, year; |
JackB | 0:04311b121ac4 | 222 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 223 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 224 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 7); |
JackB | 0:04311b121ac4 | 225 | |
JackB | 0:04311b121ac4 | 226 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 227 | |
JackB | 0:04311b121ac4 | 228 | // A few of these need masks because certain bits are control bits |
JackB | 0:04311b121ac4 | 229 | second = bcdToDec(buf[0] & 0x7f); // 01111111 0-59 |
JackB | 0:04311b121ac4 | 230 | minute = bcdToDec(buf[1] & 0x7f); // 01111111 0-59 |
JackB | 0:04311b121ac4 | 231 | hour = bcdToDec(buf[2] & 0x3f); // 00111111 1-23 |
JackB | 0:04311b121ac4 | 232 | dayOfWeek = bcdToDec(buf[3] & 0x07); // 00000111 1-7 |
JackB | 0:04311b121ac4 | 233 | dayOfMonth = bcdToDec(buf[4] & 0x3f); // 00111111 1-31 |
JackB | 0:04311b121ac4 | 234 | month = bcdToDec(buf[5] & 0x1f); // 00011111 1-12 |
JackB | 0:04311b121ac4 | 235 | year = bcdToDec(buf[6]); // 11111111 0-99 |
JackB | 0:04311b121ac4 | 236 | return (year <= 15) ? true : false; |
JackB | 0:04311b121ac4 | 237 | } |
JackB | 0:04311b121ac4 | 238 | |
JackB | 0:04311b121ac4 | 239 | // Enable the clock without changing the date/time |
JackB | 0:04311b121ac4 | 240 | void MCP79412::enableClock() |
JackB | 0:04311b121ac4 | 241 | { |
JackB | 0:04311b121ac4 | 242 | // Get the current seconds value as the enable/disable bit is in the same |
JackB | 0:04311b121ac4 | 243 | // byte of memory as the seconds value: |
JackB | 0:04311b121ac4 | 244 | char buf[2]; |
JackB | 0:04311b121ac4 | 245 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 246 | int w1 = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 247 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 248 | |
JackB | 0:04311b121ac4 | 249 | int second = bcdToDec(buf[0] & 0x7f); // 01111111 |
JackB | 0:04311b121ac4 | 250 | |
JackB | 0:04311b121ac4 | 251 | // Start Clock: |
JackB | 0:04311b121ac4 | 252 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 253 | buf[1] = _BV(ST) | decToBcd(second); // set seconds and enable clock (10000000, Bit 7, ST = 1) |
JackB | 0:04311b121ac4 | 254 | int w2 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 255 | |
JackB | 0:04311b121ac4 | 256 | _error = ((w1 != 0) || (r != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 257 | } |
JackB | 0:04311b121ac4 | 258 | |
JackB | 0:04311b121ac4 | 259 | // Disable the clock without changing the date/time |
JackB | 0:04311b121ac4 | 260 | void MCP79412::disableClock() |
JackB | 0:04311b121ac4 | 261 | { |
JackB | 0:04311b121ac4 | 262 | // Get the current seconds value as the enable/disable bit is in the same |
JackB | 0:04311b121ac4 | 263 | // uint8_t of memory as the seconds value: |
JackB | 0:04311b121ac4 | 264 | char buf[2]; |
JackB | 0:04311b121ac4 | 265 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 266 | int w1 = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 267 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 268 | |
JackB | 0:04311b121ac4 | 269 | int second = bcdToDec(buf[0] & 0x7f); // 01111111 |
JackB | 0:04311b121ac4 | 270 | |
JackB | 0:04311b121ac4 | 271 | // Stop Clock: |
JackB | 0:04311b121ac4 | 272 | buf[0] = RTC_LOCATION; |
JackB | 0:04311b121ac4 | 273 | buf[1] = decToBcd(second); // set seconds and disable clock (01111111, Bit 7, ST = 0) |
JackB | 0:04311b121ac4 | 274 | int w2 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 275 | |
JackB | 0:04311b121ac4 | 276 | _error = ((w1 != 0) || (r != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 277 | } |
JackB | 0:04311b121ac4 | 278 | |
JackB | 0:04311b121ac4 | 279 | // Enable the battery |
JackB | 0:04311b121ac4 | 280 | void MCP79412::enableBattery() |
JackB | 0:04311b121ac4 | 281 | { |
JackB | 0:04311b121ac4 | 282 | // Get the current day value as the enable/disable bit is in the same |
JackB | 0:04311b121ac4 | 283 | // uint8_t of memory as the seconds value: |
JackB | 0:04311b121ac4 | 284 | char buf[2]; |
JackB | 0:04311b121ac4 | 285 | buf[0] = DAY_REG; |
JackB | 0:04311b121ac4 | 286 | int w1 = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 287 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 288 | |
JackB | 0:04311b121ac4 | 289 | int day = bcdToDec(buf[0] & 0x07); // 00000111 |
JackB | 0:04311b121ac4 | 290 | |
JackB | 0:04311b121ac4 | 291 | // Start Clock: |
JackB | 0:04311b121ac4 | 292 | buf[0] = DAY_REG; |
JackB | 0:04311b121ac4 | 293 | buf[1] = _BV(VBATEN) | decToBcd(day); // set day and enable battery (00001000) |
JackB | 0:04311b121ac4 | 294 | int w2 = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 295 | |
JackB | 0:04311b121ac4 | 296 | _error = ((w1 != 0) || (r != 0) || (w2 != 0)); |
JackB | 0:04311b121ac4 | 297 | } |
JackB | 0:04311b121ac4 | 298 | |
JackB | 0:04311b121ac4 | 299 | |
JackB | 0:04311b121ac4 | 300 | // Write a single byte of data to RAM |
JackB | 0:04311b121ac4 | 301 | void MCP79412::writeRamByte(uint8_t location, uint8_t data) |
JackB | 0:04311b121ac4 | 302 | { |
JackB | 0:04311b121ac4 | 303 | writeRamBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 304 | // char buf[2]; |
JackB | 0:04311b121ac4 | 305 | // if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 306 | // { |
JackB | 0:04311b121ac4 | 307 | // buf[0] = location; |
JackB | 0:04311b121ac4 | 308 | // buf[1] = data; |
JackB | 0:04311b121ac4 | 309 | // int w = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 310 | // _error = (w != 0); |
JackB | 0:04311b121ac4 | 311 | // } |
JackB | 0:04311b121ac4 | 312 | } |
JackB | 0:04311b121ac4 | 313 | |
JackB | 0:04311b121ac4 | 314 | // Write multiple bytes of data to RAM |
JackB | 0:04311b121ac4 | 315 | uint8_t MCP79412::writeRamBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 316 | { |
JackB | 0:04311b121ac4 | 317 | uint8_t bytesWritten = 0; |
JackB | 0:04311b121ac4 | 318 | char buf[1]; |
JackB | 0:04311b121ac4 | 319 | buf[0] = location; |
JackB | 0:04311b121ac4 | 320 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 321 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 322 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 323 | buf[0] = data[i]; |
JackB | 0:04311b121ac4 | 324 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); // Returns 0 on success (ack), non-0 on failure (nack) |
JackB | 0:04311b121ac4 | 325 | bytesWritten++; |
JackB | 0:04311b121ac4 | 326 | if (_error == false) { |
JackB | 0:04311b121ac4 | 327 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 328 | } |
JackB | 0:04311b121ac4 | 329 | } |
JackB | 0:04311b121ac4 | 330 | return bytesWritten; |
JackB | 0:04311b121ac4 | 331 | } |
JackB | 0:04311b121ac4 | 332 | |
JackB | 0:04311b121ac4 | 333 | // Read a single byte of data from RAM |
JackB | 0:04311b121ac4 | 334 | uint8_t MCP79412::readRamByte(uint8_t location) |
JackB | 0:04311b121ac4 | 335 | { |
JackB | 0:04311b121ac4 | 336 | uint8_t data; |
JackB | 0:04311b121ac4 | 337 | readRamBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 338 | return data; |
JackB | 0:04311b121ac4 | 339 | // char buf[2]; |
JackB | 0:04311b121ac4 | 340 | // if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 341 | // { |
JackB | 0:04311b121ac4 | 342 | // buf[0] = location; |
JackB | 0:04311b121ac4 | 343 | // int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 344 | // int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 345 | // |
JackB | 0:04311b121ac4 | 346 | // _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 347 | // |
JackB | 0:04311b121ac4 | 348 | // return buf[0]; |
JackB | 0:04311b121ac4 | 349 | // } |
JackB | 0:04311b121ac4 | 350 | // return 0; |
JackB | 0:04311b121ac4 | 351 | } |
JackB | 0:04311b121ac4 | 352 | |
JackB | 0:04311b121ac4 | 353 | // Read multiple bytes of data from RAM |
JackB | 0:04311b121ac4 | 354 | uint8_t MCP79412::readRamBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 355 | { |
JackB | 0:04311b121ac4 | 356 | uint8_t bytesRead = 0; |
JackB | 0:04311b121ac4 | 357 | char buf[1]; |
JackB | 0:04311b121ac4 | 358 | buf[0] = location; |
JackB | 0:04311b121ac4 | 359 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 360 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 361 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 362 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 363 | bytesRead++; |
JackB | 0:04311b121ac4 | 364 | data[i] = buf[0]; |
JackB | 0:04311b121ac4 | 365 | if (_error == false) { |
JackB | 0:04311b121ac4 | 366 | _error = (r != 0); |
JackB | 0:04311b121ac4 | 367 | } |
JackB | 0:04311b121ac4 | 368 | } |
JackB | 0:04311b121ac4 | 369 | return bytesRead; |
JackB | 0:04311b121ac4 | 370 | } |
JackB | 0:04311b121ac4 | 371 | |
JackB | 0:04311b121ac4 | 372 | // 64 Bytes SRAM, Battery Backed |
JackB | 0:04311b121ac4 | 373 | // Write a single byte of data to SRAM |
JackB | 0:04311b121ac4 | 374 | void MCP79412::writeSramByte(uint8_t location, uint8_t data) |
JackB | 0:04311b121ac4 | 375 | { |
JackB | 0:04311b121ac4 | 376 | writeSramBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 377 | // char buf[2]; |
JackB | 0:04311b121ac4 | 378 | // if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 379 | // { |
JackB | 0:04311b121ac4 | 380 | // buf[0] = location; |
JackB | 0:04311b121ac4 | 381 | // buf[1] = data; |
JackB | 0:04311b121ac4 | 382 | // int w = _i2c.write(MCP79412_RTC_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 383 | // _error = (w != 0); |
JackB | 0:04311b121ac4 | 384 | // } |
JackB | 0:04311b121ac4 | 385 | } |
JackB | 0:04311b121ac4 | 386 | |
JackB | 0:04311b121ac4 | 387 | // 64 Bytes SRAM, Battery Backed |
JackB | 0:04311b121ac4 | 388 | // Write multiple bytes of data to SRAM |
JackB | 0:04311b121ac4 | 389 | uint8_t MCP79412::writeSramBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 390 | { |
JackB | 0:04311b121ac4 | 391 | uint8_t bytesWritten = 0; |
JackB | 0:04311b121ac4 | 392 | char buf[1]; |
JackB | 0:04311b121ac4 | 393 | buf[0] = location; |
JackB | 0:04311b121ac4 | 394 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 395 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 396 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 397 | if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 398 | { |
JackB | 0:04311b121ac4 | 399 | buf[0] = data[i]; |
JackB | 0:04311b121ac4 | 400 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); // Returns 0 on success (ack), non-0 on failure (nack) |
JackB | 0:04311b121ac4 | 401 | bytesWritten++; |
JackB | 0:04311b121ac4 | 402 | if (_error == false) { |
JackB | 0:04311b121ac4 | 403 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 404 | } |
JackB | 0:04311b121ac4 | 405 | } |
JackB | 0:04311b121ac4 | 406 | location++; |
JackB | 0:04311b121ac4 | 407 | } |
JackB | 0:04311b121ac4 | 408 | return bytesWritten; |
JackB | 0:04311b121ac4 | 409 | } |
JackB | 0:04311b121ac4 | 410 | |
JackB | 0:04311b121ac4 | 411 | // 64 Bytes SRAM, Battery Backed |
JackB | 0:04311b121ac4 | 412 | // Read a single byte of data from SRAM |
JackB | 0:04311b121ac4 | 413 | uint8_t MCP79412::readSramByte(uint8_t location) |
JackB | 0:04311b121ac4 | 414 | { |
JackB | 0:04311b121ac4 | 415 | uint8_t data; |
JackB | 0:04311b121ac4 | 416 | readSramBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 417 | return data; |
JackB | 0:04311b121ac4 | 418 | // char buf[2]; |
JackB | 0:04311b121ac4 | 419 | // if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 420 | // { |
JackB | 0:04311b121ac4 | 421 | // buf[0] = location; |
JackB | 0:04311b121ac4 | 422 | // int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 423 | // int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 424 | // |
JackB | 0:04311b121ac4 | 425 | // _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 426 | // |
JackB | 0:04311b121ac4 | 427 | // return buf[0]; |
JackB | 0:04311b121ac4 | 428 | // } |
JackB | 0:04311b121ac4 | 429 | // return 0; |
JackB | 0:04311b121ac4 | 430 | } |
JackB | 0:04311b121ac4 | 431 | |
JackB | 0:04311b121ac4 | 432 | // 64 Bytes SRAM, Battery Backed |
JackB | 0:04311b121ac4 | 433 | // Read multiple bytes of data from SRAM |
JackB | 0:04311b121ac4 | 434 | uint8_t MCP79412::readSramBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 435 | { |
JackB | 0:04311b121ac4 | 436 | uint8_t bytesRead = 0; |
JackB | 0:04311b121ac4 | 437 | char buf[1]; |
JackB | 0:04311b121ac4 | 438 | buf[0] = location; |
JackB | 0:04311b121ac4 | 439 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 440 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 441 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 442 | if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 443 | { |
JackB | 0:04311b121ac4 | 444 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 445 | bytesRead++; |
JackB | 0:04311b121ac4 | 446 | data[i] = buf[0]; |
JackB | 0:04311b121ac4 | 447 | if (_error == false) { |
JackB | 0:04311b121ac4 | 448 | _error = (r != 0); |
JackB | 0:04311b121ac4 | 449 | } |
JackB | 0:04311b121ac4 | 450 | } |
JackB | 0:04311b121ac4 | 451 | location++; |
JackB | 0:04311b121ac4 | 452 | } |
JackB | 0:04311b121ac4 | 453 | return bytesRead; |
JackB | 0:04311b121ac4 | 454 | } |
JackB | 0:04311b121ac4 | 455 | |
JackB | 0:04311b121ac4 | 456 | // 128 Bytes EEPROM |
JackB | 0:04311b121ac4 | 457 | // Write a single byte of data to EEPROM |
JackB | 0:04311b121ac4 | 458 | void MCP79412::writeEepromByte(uint8_t location, uint8_t data) |
JackB | 0:04311b121ac4 | 459 | { |
JackB | 0:04311b121ac4 | 460 | writeEepromBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 461 | // char buf[2]; |
JackB | 0:04311b121ac4 | 462 | // unlockUniqueID(); |
JackB | 0:04311b121ac4 | 463 | // buf[0] = location & (EEPROM_SIZE - 1); |
JackB | 0:04311b121ac4 | 464 | // buf[1] = data; |
JackB | 0:04311b121ac4 | 465 | // int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 2); |
JackB | 0:04311b121ac4 | 466 | // _error = (w != 0); |
JackB | 0:04311b121ac4 | 467 | } |
JackB | 0:04311b121ac4 | 468 | |
JackB | 0:04311b121ac4 | 469 | // 128 Bytes EEPROM |
JackB | 0:04311b121ac4 | 470 | // Unlock the unique id area and write multiple of bytes to EEPROM |
JackB | 0:04311b121ac4 | 471 | uint8_t MCP79412::writeEepromBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 472 | { |
JackB | 0:04311b121ac4 | 473 | uint8_t bytesWritten = 0; |
JackB | 0:04311b121ac4 | 474 | char buf[1]; |
JackB | 0:04311b121ac4 | 475 | unlockUniqueID(); |
JackB | 0:04311b121ac4 | 476 | buf[0] = location & (EEPROM_SIZE - 1); // location & 0x7f |
JackB | 0:04311b121ac4 | 477 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 478 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 479 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 480 | if (location < EEPROM_SIZE) |
JackB | 0:04311b121ac4 | 481 | { |
JackB | 0:04311b121ac4 | 482 | buf[0] = data[i]; |
JackB | 0:04311b121ac4 | 483 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 1); // Returns 0 on success (ack), non-0 on failure (nack) |
JackB | 0:04311b121ac4 | 484 | bytesWritten++; |
JackB | 0:04311b121ac4 | 485 | if (_error == false) { |
JackB | 0:04311b121ac4 | 486 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 487 | } |
JackB | 0:04311b121ac4 | 488 | } |
JackB | 0:04311b121ac4 | 489 | location++; |
JackB | 0:04311b121ac4 | 490 | } |
JackB | 0:04311b121ac4 | 491 | return bytesWritten; |
JackB | 0:04311b121ac4 | 492 | } |
JackB | 0:04311b121ac4 | 493 | |
JackB | 0:04311b121ac4 | 494 | // 128 Bytes EEPROM |
JackB | 0:04311b121ac4 | 495 | // Read a single byte of data from EEPROM |
JackB | 0:04311b121ac4 | 496 | uint8_t MCP79412::readEepromByte(uint8_t location) |
JackB | 0:04311b121ac4 | 497 | { |
JackB | 0:04311b121ac4 | 498 | uint8_t data; |
JackB | 0:04311b121ac4 | 499 | readEepromBytes(location, &data, 1); |
JackB | 0:04311b121ac4 | 500 | return data; |
JackB | 0:04311b121ac4 | 501 | // char buf[2]; |
JackB | 0:04311b121ac4 | 502 | // if ((location >= SRAM_START_ADDR) && (location <= SRAM_END_ADDR)) |
JackB | 0:04311b121ac4 | 503 | // { |
JackB | 0:04311b121ac4 | 504 | // buf[0] = location; |
JackB | 0:04311b121ac4 | 505 | // int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 506 | // int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 507 | // |
JackB | 0:04311b121ac4 | 508 | // _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 509 | // |
JackB | 0:04311b121ac4 | 510 | // return buf[0]; |
JackB | 0:04311b121ac4 | 511 | // } |
JackB | 0:04311b121ac4 | 512 | // return 0; |
JackB | 0:04311b121ac4 | 513 | } |
JackB | 0:04311b121ac4 | 514 | |
JackB | 0:04311b121ac4 | 515 | // 128 Bytes EEPROM |
JackB | 0:04311b121ac4 | 516 | // Read multiple bytes of data from EEPROM |
JackB | 0:04311b121ac4 | 517 | uint8_t MCP79412::readEepromBytes(uint8_t location, uint8_t *data, uint8_t length) |
JackB | 0:04311b121ac4 | 518 | { |
JackB | 0:04311b121ac4 | 519 | uint8_t bytesRead = 0; |
JackB | 0:04311b121ac4 | 520 | char buf[1]; |
JackB | 0:04311b121ac4 | 521 | buf[0] = location & (EEPROM_SIZE - 1); // location & 0x7f |
JackB | 0:04311b121ac4 | 522 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 523 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 524 | for (uint8_t i = 0; i < length; i++) { |
JackB | 0:04311b121ac4 | 525 | if (location < EEPROM_SIZE) |
JackB | 0:04311b121ac4 | 526 | { |
JackB | 0:04311b121ac4 | 527 | int r = _i2c.read(MCP79412_EEPROM_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 528 | bytesRead++; |
JackB | 0:04311b121ac4 | 529 | data[i] = buf[0]; |
JackB | 0:04311b121ac4 | 530 | if (_error == false) { |
JackB | 0:04311b121ac4 | 531 | _error = (r != 0); |
JackB | 0:04311b121ac4 | 532 | } |
JackB | 0:04311b121ac4 | 533 | } |
JackB | 0:04311b121ac4 | 534 | location++; |
JackB | 0:04311b121ac4 | 535 | } |
JackB | 0:04311b121ac4 | 536 | return bytesRead; |
JackB | 0:04311b121ac4 | 537 | } |
JackB | 0:04311b121ac4 | 538 | |
JackB | 0:04311b121ac4 | 539 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 540 | * Read the calibration register. * |
JackB | 0:04311b121ac4 | 541 | * The calibration value is not a twos-complement number. The MSB is * |
JackB | 0:04311b121ac4 | 542 | * the sign bit, and the 7 LSBs are an unsigned number, so we convert * |
JackB | 0:04311b121ac4 | 543 | * it and return it to the caller as a regular twos-complement integer. * |
JackB | 0:04311b121ac4 | 544 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 545 | int MCP79412::calibRead(void) |
JackB | 0:04311b121ac4 | 546 | { |
JackB | 0:04311b121ac4 | 547 | uint8_t val = readRamByte(CALIB_REG); |
JackB | 0:04311b121ac4 | 548 | |
JackB | 0:04311b121ac4 | 549 | if ( val & 0x80 ) { |
JackB | 0:04311b121ac4 | 550 | return -(val & 0x7F); |
JackB | 0:04311b121ac4 | 551 | } |
JackB | 0:04311b121ac4 | 552 | return val; |
JackB | 0:04311b121ac4 | 553 | } |
JackB | 0:04311b121ac4 | 554 | |
JackB | 0:04311b121ac4 | 555 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 556 | * Write the calibration register. * |
JackB | 0:04311b121ac4 | 557 | * Calibration value must be between -127 and 127, others result * |
JackB | 0:04311b121ac4 | 558 | * in no action. See note above on the format of the calibration value. * |
JackB | 0:04311b121ac4 | 559 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 560 | void MCP79412::calibWrite(int value) |
JackB | 0:04311b121ac4 | 561 | { |
JackB | 0:04311b121ac4 | 562 | uint8_t calibVal; |
JackB | 0:04311b121ac4 | 563 | |
JackB | 0:04311b121ac4 | 564 | if (value >= -127 && value <= 127) { |
JackB | 0:04311b121ac4 | 565 | calibVal = abs(value); |
JackB | 0:04311b121ac4 | 566 | if (value < 0) { |
JackB | 0:04311b121ac4 | 567 | calibVal += 128; |
JackB | 0:04311b121ac4 | 568 | } |
JackB | 0:04311b121ac4 | 569 | writeRamByte(CALIB_REG, calibVal); |
JackB | 0:04311b121ac4 | 570 | } |
JackB | 0:04311b121ac4 | 571 | } |
JackB | 0:04311b121ac4 | 572 | |
JackB | 0:04311b121ac4 | 573 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 574 | * Read the unique ID. * |
JackB | 0:04311b121ac4 | 575 | * User or factory programmable, Protected area * |
JackB | 0:04311b121ac4 | 576 | * For the MCP79411 (EUI-48), the first two bytes will contain 0xFF. * |
JackB | 0:04311b121ac4 | 577 | * Caller must provide an 8-byte array to contain the results. * |
JackB | 0:04311b121ac4 | 578 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 579 | void MCP79412::readUniqueId(char *uniqueID) |
JackB | 0:04311b121ac4 | 580 | { |
JackB | 0:04311b121ac4 | 581 | char buf[1]; |
JackB | 0:04311b121ac4 | 582 | buf[0] = UNIQUE_ID_ADDR; |
JackB | 0:04311b121ac4 | 583 | int w = _i2c.write(MCP79412_EEPROM_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 584 | int r = _i2c.read(MCP79412_EEPROM_ADDR, uniqueID, UNIQUE_ID_SIZE); |
JackB | 0:04311b121ac4 | 585 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 586 | } |
JackB | 0:04311b121ac4 | 587 | |
JackB | 0:04311b121ac4 | 588 | /*----------------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 589 | * Returns an EUI-64 ID. For an MCP79411, the EUI-48 ID is converted to * |
JackB | 0:04311b121ac4 | 590 | * EUI-64. For an MCP79412, calling this function is equivalent to * |
JackB | 0:04311b121ac4 | 591 | * calling readUniqueId(). For an MCP79412, if the RTC type is known, calling * |
JackB | 0:04311b121ac4 | 592 | * readUniqueId() will be a bit more efficient. * |
JackB | 0:04311b121ac4 | 593 | * Caller must provide an 8-byte array to contain the results. * |
JackB | 0:04311b121ac4 | 594 | *----------------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 595 | void MCP79412::getEUI64(char *uniqueID) |
JackB | 0:04311b121ac4 | 596 | { |
JackB | 0:04311b121ac4 | 597 | char rtcID[8]; |
JackB | 0:04311b121ac4 | 598 | |
JackB | 0:04311b121ac4 | 599 | readUniqueId(rtcID); |
JackB | 0:04311b121ac4 | 600 | if ((rtcID[0] == 0xFF) && (rtcID[1] == 0xFF)) { |
JackB | 0:04311b121ac4 | 601 | rtcID[0] = rtcID[2]; |
JackB | 0:04311b121ac4 | 602 | rtcID[1] = rtcID[3]; |
JackB | 0:04311b121ac4 | 603 | rtcID[2] = rtcID[4]; |
JackB | 0:04311b121ac4 | 604 | rtcID[3] = 0xFF; |
JackB | 0:04311b121ac4 | 605 | rtcID[4] = 0xFE; |
JackB | 0:04311b121ac4 | 606 | } |
JackB | 0:04311b121ac4 | 607 | for (uint8_t i = 0; i < UNIQUE_ID_SIZE; i++) { |
JackB | 0:04311b121ac4 | 608 | uniqueID[i] = rtcID[i]; |
JackB | 0:04311b121ac4 | 609 | } |
JackB | 0:04311b121ac4 | 610 | } |
JackB | 0:04311b121ac4 | 611 | |
JackB | 0:04311b121ac4 | 612 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 613 | * Check to see if a power failure has occurred. If so, returns TRUE * |
JackB | 0:04311b121ac4 | 614 | * as the function value, and returns the power down and power up * |
JackB | 0:04311b121ac4 | 615 | * timestamps. After returning the time stamps, the RTC's timestamp * |
JackB | 0:04311b121ac4 | 616 | * registers are cleared and the VBAT bit which indicates a power * |
JackB | 0:04311b121ac4 | 617 | * failure is reset. * |
JackB | 0:04311b121ac4 | 618 | * * |
JackB | 0:04311b121ac4 | 619 | * Note that the power down and power up timestamp registers do not * |
JackB | 0:04311b121ac4 | 620 | * contain values for seconds or for the year. The returned time stamps * |
JackB | 0:04311b121ac4 | 621 | * will therefore contain the current year from the RTC. However, there * |
JackB | 0:04311b121ac4 | 622 | * is a chance that a power outage spans from one year to the next. * |
JackB | 0:04311b121ac4 | 623 | * If we find the power down timestamp to be later (larger) than the * |
JackB | 0:04311b121ac4 | 624 | * power up timestamp, we will assume this has happened, and well * |
JackB | 0:04311b121ac4 | 625 | * subtract one year from the power down timestamp. * |
JackB | 0:04311b121ac4 | 626 | * * |
JackB | 0:04311b121ac4 | 627 | * Still, there is an assumption that the timestamps are being read * |
JackB | 0:04311b121ac4 | 628 | * in the same year as that when the power up occurred. * |
JackB | 0:04311b121ac4 | 629 | * * |
JackB | 0:04311b121ac4 | 630 | * Finally, note that once the RTC records a power outage, it must be * |
JackB | 0:04311b121ac4 | 631 | * cleared before another will be recorded. * |
JackB | 0:04311b121ac4 | 632 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 633 | bool MCP79412::powerFail(time_t *powerDown, time_t *powerUp) |
JackB | 0:04311b121ac4 | 634 | { |
JackB | 0:04311b121ac4 | 635 | uint8_t day, yr; //copies of the RTC Day and Year registers |
JackB | 0:04311b121ac4 | 636 | struct tm dn, up; //power down and power up times |
JackB | 0:04311b121ac4 | 637 | char buf[8]; |
JackB | 0:04311b121ac4 | 638 | |
JackB | 0:04311b121ac4 | 639 | readRamBytes(DAY_REG, &day, 1); |
JackB | 0:04311b121ac4 | 640 | readRamBytes(YEAR_REG, &yr, 1); |
JackB | 0:04311b121ac4 | 641 | yr = y2kYearToTm(bcdToDec(yr)); |
JackB | 0:04311b121ac4 | 642 | if ( day & _BV(VBAT) ) { |
JackB | 0:04311b121ac4 | 643 | buf[0] = PWRDWN_TS_REG; |
JackB | 0:04311b121ac4 | 644 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 645 | |
JackB | 0:04311b121ac4 | 646 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 8); //read both timestamp registers, 8 bytes total |
JackB | 0:04311b121ac4 | 647 | dn.tm_sec = 0; |
JackB | 0:04311b121ac4 | 648 | dn.tm_min = bcdToDec(buf[0]); |
JackB | 0:04311b121ac4 | 649 | dn.tm_hour = bcdToDec(buf[1] & ~_BV(HR1224)); //assumes 24hr clock |
JackB | 0:04311b121ac4 | 650 | dn.tm_mday = bcdToDec(buf[2]); |
JackB | 0:04311b121ac4 | 651 | dn.tm_mon = bcdToDec(buf[3] & 0x1F); //mask off the day, we don't need it |
JackB | 0:04311b121ac4 | 652 | dn.tm_year = yr; //assume current year |
JackB | 0:04311b121ac4 | 653 | up.tm_sec = 0; |
JackB | 0:04311b121ac4 | 654 | up.tm_min = bcdToDec(buf[4]); |
JackB | 0:04311b121ac4 | 655 | up.tm_hour = bcdToDec(buf[5] & ~_BV(HR1224)); //assumes 24hr clock |
JackB | 0:04311b121ac4 | 656 | up.tm_mday = bcdToDec(buf[6]); |
JackB | 0:04311b121ac4 | 657 | up.tm_mon = bcdToDec(buf[7] & 0x1F); //mask off the day, we don't need it |
JackB | 0:04311b121ac4 | 658 | up.tm_year = yr; //assume current year |
JackB | 0:04311b121ac4 | 659 | |
JackB | 0:04311b121ac4 | 660 | *powerDown = mktime(&dn); |
JackB | 0:04311b121ac4 | 661 | *powerUp = mktime(&up); |
JackB | 0:04311b121ac4 | 662 | |
JackB | 0:04311b121ac4 | 663 | //clear the VBAT bit, which causes the RTC hardware to clear the timestamps too. |
JackB | 0:04311b121ac4 | 664 | //I suppose there is a risk here that the day has changed since we read it, |
JackB | 0:04311b121ac4 | 665 | //but the Day of Week is actually redundant data and the makeTime() function |
JackB | 0:04311b121ac4 | 666 | //does not use it. This could be an issue if someone is reading the RTC |
JackB | 0:04311b121ac4 | 667 | //registers directly, but as this library is meant to be used with the Time library, |
JackB | 0:04311b121ac4 | 668 | //and also because we don't provide a method to read the RTC clock/calendar |
JackB | 0:04311b121ac4 | 669 | //registers directly, we won't lose any sleep about it at this point unless |
JackB | 0:04311b121ac4 | 670 | //some issue is actually brought to our attention ;-) |
JackB | 0:04311b121ac4 | 671 | day &= ~_BV(VBAT); |
JackB | 0:04311b121ac4 | 672 | writeRamBytes(DAY_REG, &day , 1); |
JackB | 0:04311b121ac4 | 673 | |
JackB | 0:04311b121ac4 | 674 | //adjust the powerDown timestamp if needed (see notes above) |
JackB | 0:04311b121ac4 | 675 | if (*powerDown > *powerUp) { |
JackB | 0:04311b121ac4 | 676 | --dn.tm_year; |
JackB | 0:04311b121ac4 | 677 | *powerDown = mktime(&dn); |
JackB | 0:04311b121ac4 | 678 | } |
JackB | 0:04311b121ac4 | 679 | return true; |
JackB | 0:04311b121ac4 | 680 | } |
JackB | 0:04311b121ac4 | 681 | return false; |
JackB | 0:04311b121ac4 | 682 | } |
JackB | 0:04311b121ac4 | 683 | |
JackB | 0:04311b121ac4 | 684 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 685 | * Enable or disable the square wave output. * |
JackB | 0:04311b121ac4 | 686 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 687 | void MCP79412::squareWave(Sqwave freq) |
JackB | 0:04311b121ac4 | 688 | { |
JackB | 0:04311b121ac4 | 689 | uint8_t ctrlReg; |
JackB | 0:04311b121ac4 | 690 | |
JackB | 0:04311b121ac4 | 691 | readRamBytes(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 692 | if (freq > 3) { |
JackB | 0:04311b121ac4 | 693 | ctrlReg &= ~_BV(SQWE); |
JackB | 0:04311b121ac4 | 694 | } |
JackB | 0:04311b121ac4 | 695 | else { |
JackB | 0:04311b121ac4 | 696 | ctrlReg = (ctrlReg & 0xF8) | _BV(SQWE) | freq; |
JackB | 0:04311b121ac4 | 697 | } |
JackB | 0:04311b121ac4 | 698 | writeRamByte(CTRL_REG, ctrlReg); |
JackB | 0:04311b121ac4 | 699 | } |
JackB | 0:04311b121ac4 | 700 | |
JackB | 0:04311b121ac4 | 701 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 702 | * Set an alarm time. Sets the alarm registers only, does not enable * |
JackB | 0:04311b121ac4 | 703 | * the alarm. See enableAlarm(). * |
JackB | 0:04311b121ac4 | 704 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 705 | void MCP79412::setAlarm(uint8_t alarmNumber, time_t alarmTime) |
JackB | 0:04311b121ac4 | 706 | { |
JackB | 0:04311b121ac4 | 707 | struct tm *t; |
JackB | 0:04311b121ac4 | 708 | uint8_t day; // Need to preserve bits in the day (of week) register |
JackB | 0:04311b121ac4 | 709 | |
JackB | 0:04311b121ac4 | 710 | alarmNumber &= 0x01; // Ensure a valid alarm number |
JackB | 0:04311b121ac4 | 711 | readRamBytes(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG) , &day, 1); |
JackB | 0:04311b121ac4 | 712 | t = localtime(&alarmTime); // Put the time_t into the tm structure |
JackB | 0:04311b121ac4 | 713 | |
JackB | 0:04311b121ac4 | 714 | char buf[7]; |
JackB | 0:04311b121ac4 | 715 | buf[0] = ALM0_REG + alarmNumber * (ALM1_REG - ALM0_REG); |
JackB | 0:04311b121ac4 | 716 | buf[1] = dec2bcd(t->tm_sec); |
JackB | 0:04311b121ac4 | 717 | buf[2] = dec2bcd(t->tm_min); |
JackB | 0:04311b121ac4 | 718 | buf[3] = dec2bcd(t->tm_hour); // Sets 24 hour format (Bit 6 == 0) |
JackB | 0:04311b121ac4 | 719 | buf[4] = (day & 0xF8) + t->tm_wday; |
JackB | 0:04311b121ac4 | 720 | buf[5] = dec2bcd(t->tm_mday); |
JackB | 0:04311b121ac4 | 721 | buf[6] = dec2bcd(t->tm_mon); |
JackB | 0:04311b121ac4 | 722 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 7); |
JackB | 0:04311b121ac4 | 723 | _error = (w != 0); |
JackB | 0:04311b121ac4 | 724 | } |
JackB | 0:04311b121ac4 | 725 | |
JackB | 0:04311b121ac4 | 726 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 727 | * Enable or disable an alarm, and set the trigger criteria, * |
JackB | 0:04311b121ac4 | 728 | * e.g. match only seconds, only minutes, entire time and date, etc. * |
JackB | 0:04311b121ac4 | 729 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 730 | void MCP79412::enableAlarm(uint8_t alarmNumber, uint8_t alarmType) |
JackB | 0:04311b121ac4 | 731 | { |
JackB | 0:04311b121ac4 | 732 | uint8_t day; //alarm day register has config & flag bits |
JackB | 0:04311b121ac4 | 733 | uint8_t ctrl; //control register has alarm enable bits |
JackB | 0:04311b121ac4 | 734 | |
JackB | 0:04311b121ac4 | 735 | alarmNumber &= 0x01; //ensure a valid alarm number |
JackB | 0:04311b121ac4 | 736 | readRamBytes(CTRL_REG, &ctrl, 1); |
JackB | 0:04311b121ac4 | 737 | if (alarmType < ALM_DISABLE) { |
JackB | 0:04311b121ac4 | 738 | readRamBytes(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 739 | day = ( day & 0x87 ) | alarmType << 4; //reset interrupt flag, OR in the config bits |
JackB | 0:04311b121ac4 | 740 | writeRamByte(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), day); |
JackB | 0:04311b121ac4 | 741 | ctrl |= _BV(ALM0 + alarmNumber); //enable the alarm |
JackB | 0:04311b121ac4 | 742 | } |
JackB | 0:04311b121ac4 | 743 | else { |
JackB | 0:04311b121ac4 | 744 | ctrl &= ~(_BV(ALM0 + alarmNumber)); //disable the alarm |
JackB | 0:04311b121ac4 | 745 | } |
JackB | 0:04311b121ac4 | 746 | writeRamByte(CTRL_REG, ctrl); |
JackB | 0:04311b121ac4 | 747 | } |
JackB | 0:04311b121ac4 | 748 | |
JackB | 0:04311b121ac4 | 749 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 750 | * Returns true or false depending on whether the given alarm has been * |
JackB | 0:04311b121ac4 | 751 | * triggered, and resets the alarm "interrupt" flag. This is not a real * |
JackB | 0:04311b121ac4 | 752 | * interrupt, just a bit that's set when an alarm is triggered. * |
JackB | 0:04311b121ac4 | 753 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 754 | bool MCP79412::alarm(uint8_t alarmNumber) |
JackB | 0:04311b121ac4 | 755 | { |
JackB | 0:04311b121ac4 | 756 | uint8_t day; //alarm day register has config & flag bits |
JackB | 0:04311b121ac4 | 757 | |
JackB | 0:04311b121ac4 | 758 | alarmNumber &= 0x01; //ensure a valid alarm number |
JackB | 0:04311b121ac4 | 759 | readRamBytes( ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 760 | if (day & _BV(ALMIF)) { |
JackB | 0:04311b121ac4 | 761 | day &= ~_BV(ALMIF); //turn off the alarm "interrupt" flag |
JackB | 0:04311b121ac4 | 762 | writeRamByte(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), day); |
JackB | 0:04311b121ac4 | 763 | return true; |
JackB | 0:04311b121ac4 | 764 | } |
JackB | 0:04311b121ac4 | 765 | return false; |
JackB | 0:04311b121ac4 | 766 | } |
JackB | 0:04311b121ac4 | 767 | |
JackB | 0:04311b121ac4 | 768 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 769 | * Sets the logic level on the MFP when it's not being used as a * |
JackB | 0:04311b121ac4 | 770 | * square wave or alarm output. The default is HIGH. * |
JackB | 0:04311b121ac4 | 771 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 772 | void MCP79412::out(bool level) |
JackB | 0:04311b121ac4 | 773 | { |
JackB | 0:04311b121ac4 | 774 | uint8_t ctrlReg; |
JackB | 0:04311b121ac4 | 775 | |
JackB | 0:04311b121ac4 | 776 | readRamBytes(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 777 | if (level) |
JackB | 0:04311b121ac4 | 778 | ctrlReg |= _BV(OUT); |
JackB | 0:04311b121ac4 | 779 | else |
JackB | 0:04311b121ac4 | 780 | ctrlReg &= ~_BV(OUT); |
JackB | 0:04311b121ac4 | 781 | writeRamByte(CTRL_REG, ctrlReg); |
JackB | 0:04311b121ac4 | 782 | } |
JackB | 0:04311b121ac4 | 783 | |
JackB | 0:04311b121ac4 | 784 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 785 | * Specifies the logic level on the Multi-Function Pin (MFP) when an * |
JackB | 0:04311b121ac4 | 786 | * alarm is triggered. The default is LOW. When both alarms are * |
JackB | 0:04311b121ac4 | 787 | * active, the two are ORed together to determine the level of the MFP. * |
JackB | 0:04311b121ac4 | 788 | * With alarm polarity set to LOW (the default), this causes the MFP * |
JackB | 0:04311b121ac4 | 789 | * to go low only when BOTH alarms are triggered. With alarm polarity * |
JackB | 0:04311b121ac4 | 790 | * set to HIGH, the MFP will go high when EITHER alarm is triggered. * |
JackB | 0:04311b121ac4 | 791 | * * |
JackB | 0:04311b121ac4 | 792 | * Note that the state of the MFP is independent of the alarm * |
JackB | 0:04311b121ac4 | 793 | * "interrupt" flags, and the alarm() function will indicate when an * |
JackB | 0:04311b121ac4 | 794 | * alarm is triggered regardless of the polarity. * |
JackB | 0:04311b121ac4 | 795 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 796 | void MCP79412::alarmPolarity(bool polarity) |
JackB | 0:04311b121ac4 | 797 | { |
JackB | 0:04311b121ac4 | 798 | uint8_t alm0Day; |
JackB | 0:04311b121ac4 | 799 | |
JackB | 0:04311b121ac4 | 800 | readRamBytes(ALM0_DAY, &alm0Day, 1); |
JackB | 0:04311b121ac4 | 801 | if (polarity) |
JackB | 0:04311b121ac4 | 802 | alm0Day |= _BV(OUT); |
JackB | 0:04311b121ac4 | 803 | else |
JackB | 0:04311b121ac4 | 804 | alm0Day &= ~_BV(OUT); |
JackB | 0:04311b121ac4 | 805 | writeRamByte(ALM0_DAY, alm0Day); |
JackB | 0:04311b121ac4 | 806 | } |
JackB | 0:04311b121ac4 | 807 | |
JackB | 0:04311b121ac4 | 808 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 809 | * Check to see if the RTC's oscillator is started (ST bit in seconds * |
JackB | 0:04311b121ac4 | 810 | * register). Returns true if started. * |
JackB | 0:04311b121ac4 | 811 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 812 | bool MCP79412::isRunning(void) |
JackB | 0:04311b121ac4 | 813 | { |
JackB | 0:04311b121ac4 | 814 | char buf[1]; |
JackB | 0:04311b121ac4 | 815 | buf[0] = (uint8_t)TIME_REG; |
JackB | 0:04311b121ac4 | 816 | int w = _i2c.write(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 817 | int r = _i2c.read(MCP79412_RTC_ADDR, buf, 1); |
JackB | 0:04311b121ac4 | 818 | _error = ((w != 0) || (r != 0)); |
JackB | 0:04311b121ac4 | 819 | return buf[0] & _BV(ST); |
JackB | 0:04311b121ac4 | 820 | } |
JackB | 0:04311b121ac4 | 821 | |
JackB | 0:04311b121ac4 | 822 | /*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 823 | * Set or clear the VBATEN bit. Setting the bit powers the clock and * |
JackB | 0:04311b121ac4 | 824 | * SRAM from the backup battery when Vcc falls. Note that setting the * |
JackB | 0:04311b121ac4 | 825 | * time via set() or write() sets the VBATEN bit. * |
JackB | 0:04311b121ac4 | 826 | *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 827 | void MCP79412::vbaten(bool enable) |
JackB | 0:04311b121ac4 | 828 | { |
JackB | 0:04311b121ac4 | 829 | uint8_t day; |
JackB | 0:04311b121ac4 | 830 | |
JackB | 0:04311b121ac4 | 831 | readRamBytes(DAY_REG, &day, 1); |
JackB | 0:04311b121ac4 | 832 | if (enable) |
JackB | 0:04311b121ac4 | 833 | day |= _BV(VBATEN); |
JackB | 0:04311b121ac4 | 834 | else |
JackB | 0:04311b121ac4 | 835 | day &= ~_BV(VBATEN); |
JackB | 0:04311b121ac4 | 836 | |
JackB | 0:04311b121ac4 | 837 | writeRamByte(DAY_REG, day); |
JackB | 0:04311b121ac4 | 838 | return; |
JackB | 0:04311b121ac4 | 839 | } |
JackB | 0:04311b121ac4 | 840 | |
JackB | 0:04311b121ac4 | 841 | |
JackB | 0:04311b121ac4 | 842 | |
JackB | 0:04311b121ac4 | 843 | //bool MCP79412::getSummerTime(void) |
JackB | 0:04311b121ac4 | 844 | //{ |
JackB | 0:04311b121ac4 | 845 | // getDateTime(&t); |
JackB | 0:04311b121ac4 | 846 | // |
JackB | 0:04311b121ac4 | 847 | // time_t secondsEpoch = mktime(&t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 848 | // t = *localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 849 | // strftime(buffer, 32, "%j", localtime(&secondsEpoch)); |
JackB | 0:04311b121ac4 | 850 | // int dayOfYearC = atoi(buffer); |
JackB | 0:04311b121ac4 | 851 | // |
JackB | 0:04311b121ac4 | 852 | // strftime(buffer, 32, "%Y", localtime(&secondsEpoch)); |
JackB | 0:04311b121ac4 | 853 | // int year = atoi(buffer); |
JackB | 0:04311b121ac4 | 854 | // |
JackB | 0:04311b121ac4 | 855 | // int index = (year - 2011) * 5; |
JackB | 0:04311b121ac4 | 856 | // if (index < 0) |
JackB | 0:04311b121ac4 | 857 | // index = 0; |
JackB | 0:04311b121ac4 | 858 | // if (index > 440) // (2099 - 2011) * 5 = 440 |
JackB | 0:04311b121ac4 | 859 | // index = 440; |
JackB | 0:04311b121ac4 | 860 | // |
JackB | 0:04311b121ac4 | 861 | // int monthS = atoi(SummerTime[index+1]); |
JackB | 0:04311b121ac4 | 862 | // int dayS = atoi(SummerTime[index+2]); |
JackB | 0:04311b121ac4 | 863 | // |
JackB | 0:04311b121ac4 | 864 | // t.tm_mon = monthS - 1; // adjust for tm structure required values |
JackB | 0:04311b121ac4 | 865 | // t.tm_mday = dayS; |
JackB | 0:04311b121ac4 | 866 | // secondsEpoch = mktime(&t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 867 | // t = *localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 868 | // strftime(buffer, 32, "%j", localtime(&secondsEpoch)); |
JackB | 0:04311b121ac4 | 869 | // int dayOfYearS = atoi(buffer); |
JackB | 0:04311b121ac4 | 870 | // |
JackB | 0:04311b121ac4 | 871 | // int monthE = atoi(SummerTime[index+3]); |
JackB | 0:04311b121ac4 | 872 | // int dayE = atoi(SummerTime[index+4]); |
JackB | 0:04311b121ac4 | 873 | // |
JackB | 0:04311b121ac4 | 874 | // t.tm_mon = monthE - 1; // adjust for tm structure required values |
JackB | 0:04311b121ac4 | 875 | // t.tm_mday = dayE; |
JackB | 0:04311b121ac4 | 876 | // secondsEpoch = mktime(&t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 877 | // t = *localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 878 | // strftime(buffer, 32, "%j", localtime(&secondsEpoch)); |
JackB | 0:04311b121ac4 | 879 | // int dayOfYearE = atoi(buffer); |
JackB | 0:04311b121ac4 | 880 | // |
JackB | 0:04311b121ac4 | 881 | // return ((dayOfYearC >= dayOfYearS) && (dayOfYearC < dayOfYearE)) ? true : false; |
JackB | 0:04311b121ac4 | 882 | //} |
JackB | 0:04311b121ac4 | 883 | // |
JackB | 0:04311b121ac4 | 884 | //int MCP79412::dayOfYearC(void) |
JackB | 0:04311b121ac4 | 885 | //{ |
JackB | 0:04311b121ac4 | 886 | // getDateTime(&t); |
JackB | 0:04311b121ac4 | 887 | // |
JackB | 0:04311b121ac4 | 888 | // time_t secondsEpoch = mktime(&t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 889 | // strftime(buffer, 32, "%j", localtime(&secondsEpoch)); |
JackB | 0:04311b121ac4 | 890 | // return atoi(buffer); |
JackB | 0:04311b121ac4 | 891 | //} |
JackB | 0:04311b121ac4 | 892 | // |
JackB | 0:04311b121ac4 | 893 | //char * MCP79412::getSunRise(void) |
JackB | 0:04311b121ac4 | 894 | //{ |
JackB | 0:04311b121ac4 | 895 | // return (char*) SunRise[dayOfYearC()]; |
JackB | 0:04311b121ac4 | 896 | //} |
JackB | 0:04311b121ac4 | 897 | // |
JackB | 0:04311b121ac4 | 898 | //char * MCP79412::getSunSet(void) |
JackB | 0:04311b121ac4 | 899 | //{ |
JackB | 0:04311b121ac4 | 900 | // return (char*) SunSet[dayOfYearC()]; |
JackB | 0:04311b121ac4 | 901 | //} |
JackB | 0:04311b121ac4 | 902 | // |
JackB | 0:04311b121ac4 | 903 | //char * MCP79412::getDayLength(void) |
JackB | 0:04311b121ac4 | 904 | //{ |
JackB | 0:04311b121ac4 | 905 | // return (char*) DayLength[dayOfYearC()]; |
JackB | 0:04311b121ac4 | 906 | //} |
JackB | 0:04311b121ac4 | 907 | // |
JackB | 0:04311b121ac4 | 908 | //int MCP79412::getSunRiseMinute(void) |
JackB | 0:04311b121ac4 | 909 | //{ |
JackB | 0:04311b121ac4 | 910 | // int doy = dayOfYearC(); |
JackB | 0:04311b121ac4 | 911 | // int h = atoi(substr((char*)SunRise[doy], 0, 2)); |
JackB | 0:04311b121ac4 | 912 | // int m = atoi(substr((char*)SunRise[doy], 3, 2)); |
JackB | 0:04311b121ac4 | 913 | // return h * 60 + m; |
JackB | 0:04311b121ac4 | 914 | //} |
JackB | 0:04311b121ac4 | 915 | // |
JackB | 0:04311b121ac4 | 916 | //int MCP79412::getSunSetMinute(void) |
JackB | 0:04311b121ac4 | 917 | //{ |
JackB | 0:04311b121ac4 | 918 | // int doy = dayOfYearC(); |
JackB | 0:04311b121ac4 | 919 | // int h = atoi(substr((char*)SunSet[doy], 0, 2)); |
JackB | 0:04311b121ac4 | 920 | // int m = atoi(substr((char*)SunSet[doy], 3, 2)); |
JackB | 0:04311b121ac4 | 921 | // return h * 60 + m; |
JackB | 0:04311b121ac4 | 922 | //} |
JackB | 0:04311b121ac4 | 923 | // |
JackB | 0:04311b121ac4 | 924 | //bool MCP79412::checkSunRise(void) |
JackB | 0:04311b121ac4 | 925 | //{ |
JackB | 0:04311b121ac4 | 926 | // int dayOfWeek, mday, month, year, hours, minutes, seconds; |
JackB | 0:04311b121ac4 | 927 | // readDateTime(&dayOfWeek, &mday, &month, &year, &hours, &minutes, &seconds); |
JackB | 0:04311b121ac4 | 928 | // |
JackB | 0:04311b121ac4 | 929 | // int absMinute = hours * 60 + minutes; |
JackB | 0:04311b121ac4 | 930 | // int SunRiseMinute = getSunRiseMinute(); |
JackB | 0:04311b121ac4 | 931 | // int SunSetMinute = getSunSetMinute(); |
JackB | 0:04311b121ac4 | 932 | // |
JackB | 0:04311b121ac4 | 933 | // return ((absMinute >= SunRiseMinute) && (absMinute < SunSetMinute)) ? true : false; |
JackB | 0:04311b121ac4 | 934 | //} |
JackB | 0:04311b121ac4 | 935 | |
JackB | 0:04311b121ac4 | 936 | |
JackB | 0:04311b121ac4 | 937 | void MCP79412::substr(char *s, char *d, int pos, int len) |
JackB | 0:04311b121ac4 | 938 | { |
JackB | 0:04311b121ac4 | 939 | char *t; |
JackB | 0:04311b121ac4 | 940 | s = s+pos; |
JackB | 0:04311b121ac4 | 941 | t = s+len; |
JackB | 0:04311b121ac4 | 942 | while (s != t) { |
JackB | 0:04311b121ac4 | 943 | *d=*s; |
JackB | 0:04311b121ac4 | 944 | s++; |
JackB | 0:04311b121ac4 | 945 | d++; |
JackB | 0:04311b121ac4 | 946 | } |
JackB | 0:04311b121ac4 | 947 | *d='\0'; |
JackB | 0:04311b121ac4 | 948 | } |
JackB | 0:04311b121ac4 | 949 | |
JackB | 0:04311b121ac4 | 950 | char * MCP79412::substr(char *s, int pos, int len) |
JackB | 0:04311b121ac4 | 951 | { |
JackB | 0:04311b121ac4 | 952 | char *t; |
JackB | 0:04311b121ac4 | 953 | char *d; |
JackB | 0:04311b121ac4 | 954 | d = buffer; |
JackB | 0:04311b121ac4 | 955 | s = s+pos; |
JackB | 0:04311b121ac4 | 956 | t = s+len; |
JackB | 0:04311b121ac4 | 957 | while (s != t) { |
JackB | 0:04311b121ac4 | 958 | *d=*s; |
JackB | 0:04311b121ac4 | 959 | s++; |
JackB | 0:04311b121ac4 | 960 | d++; |
JackB | 0:04311b121ac4 | 961 | } |
JackB | 0:04311b121ac4 | 962 | *d='\0'; |
JackB | 0:04311b121ac4 | 963 | return buffer; |
JackB | 0:04311b121ac4 | 964 | } |
JackB | 0:04311b121ac4 | 965 | |
JackB | 0:04311b121ac4 | 966 | |
JackB | 0:04311b121ac4 | 967 | |
JackB | 0:04311b121ac4 | 968 | |
JackB | 0:04311b121ac4 | 969 | struct tm MCP79412::setSystemDateTime( |
JackB | 0:04311b121ac4 | 970 | uint8_t second, // 0-59 |
JackB | 0:04311b121ac4 | 971 | uint8_t minute, // 0-59 |
JackB | 0:04311b121ac4 | 972 | uint8_t hour, // 1-23 |
JackB | 0:04311b121ac4 | 973 | uint8_t dayOfMonth, // 1-31 |
JackB | 0:04311b121ac4 | 974 | uint8_t month, // 1-12 |
JackB | 0:04311b121ac4 | 975 | uint8_t year) // 0-99 |
JackB | 0:04311b121ac4 | 976 | { |
JackB | 0:04311b121ac4 | 977 | uint8_t dayOfWeek = 1; // Will be determined |
JackB | 0:04311b121ac4 | 978 | // Convert to unix time structure |
JackB | 0:04311b121ac4 | 979 | t->tm_sec = second; // 0-59 |
JackB | 0:04311b121ac4 | 980 | t->tm_min = minute; // 0-59 |
JackB | 0:04311b121ac4 | 981 | t->tm_hour = hour; // 0-23 |
JackB | 0:04311b121ac4 | 982 | t->tm_wday = dayOfWeek - 1; // 0-6 (0 = Sunday) |
JackB | 0:04311b121ac4 | 983 | t->tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 984 | t->tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 985 | t->tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 986 | t->tm_isdst = 0; |
JackB | 0:04311b121ac4 | 987 | |
JackB | 0:04311b121ac4 | 988 | // printf("-> Debug %d %02d-%02d-%03d %02d:%02d:%02d\n", t->tm_wday, t->tm_mday, t->tm_mon, t->tm_year, t->tm_hour, t->tm_min, t->tm_sec); |
JackB | 0:04311b121ac4 | 989 | |
JackB | 0:04311b121ac4 | 990 | secondsEpoch = mktime(t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 991 | set_time(secondsEpoch); |
JackB | 0:04311b121ac4 | 992 | |
JackB | 0:04311b121ac4 | 993 | // Get weekday 0-6, Sunday as 0 for RTC |
JackB | 0:04311b121ac4 | 994 | t = localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 995 | // printf("-> Debug %d %02d-%02d-%03d %02d:%02d:%02d\n", t->tm_wday, t->tm_mday, t->tm_mon, t->tm_year, t->tm_hour, t->tm_min, t->tm_sec); |
JackB | 0:04311b121ac4 | 996 | return *t; |
JackB | 0:04311b121ac4 | 997 | } |
JackB | 0:04311b121ac4 | 998 | |
JackB | 0:04311b121ac4 | 999 | void MCP79412::getSystemDateTime( |
JackB | 0:04311b121ac4 | 1000 | uint8_t *second, // 0-59 |
JackB | 0:04311b121ac4 | 1001 | uint8_t *minute, // 0-59 |
JackB | 0:04311b121ac4 | 1002 | uint8_t *hour, // 0-23 |
JackB | 0:04311b121ac4 | 1003 | uint8_t *dayOfWeek, // 1-7 (1 = Sunday) |
JackB | 0:04311b121ac4 | 1004 | uint8_t *dayOfMonth, // 1-31 |
JackB | 0:04311b121ac4 | 1005 | uint8_t *month, // 1-12 |
JackB | 0:04311b121ac4 | 1006 | uint8_t *year) // 0-99 year since 2000 |
JackB | 0:04311b121ac4 | 1007 | { |
JackB | 0:04311b121ac4 | 1008 | // struct tm *t; |
JackB | 0:04311b121ac4 | 1009 | // time_t secondsEpoch; |
JackB | 0:04311b121ac4 | 1010 | |
JackB | 0:04311b121ac4 | 1011 | // Get system DateTime |
JackB | 0:04311b121ac4 | 1012 | secondsEpoch = time(NULL); |
JackB | 0:04311b121ac4 | 1013 | t = localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 1014 | |
JackB | 0:04311b121ac4 | 1015 | // time/date data |
JackB | 0:04311b121ac4 | 1016 | *second = (t->tm_sec); // 0-59 |
JackB | 0:04311b121ac4 | 1017 | *minute = (t->tm_min); // 0-59 |
JackB | 0:04311b121ac4 | 1018 | *hour = (t->tm_hour); // 0-23 |
JackB | 0:04311b121ac4 | 1019 | *dayOfWeek = (t->tm_wday + 1); // 1-7 (1 = Sunday) |
JackB | 0:04311b121ac4 | 1020 | *dayOfMonth = (t->tm_mday); // 1-31 |
JackB | 0:04311b121ac4 | 1021 | *month = (t->tm_mon + 1); // 1-12 |
JackB | 0:04311b121ac4 | 1022 | *year = (t->tm_year - 100); // 0-99 year since 2000 |
JackB | 0:04311b121ac4 | 1023 | } |
JackB | 0:04311b121ac4 | 1024 | |
JackB | 0:04311b121ac4 | 1025 | void MCP79412::setRtcToSystemDateTime(void) |
JackB | 0:04311b121ac4 | 1026 | { |
JackB | 0:04311b121ac4 | 1027 | // Get system DateTime |
JackB | 0:04311b121ac4 | 1028 | secondsEpoch = time(NULL); |
JackB | 0:04311b121ac4 | 1029 | t = localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 1030 | |
JackB | 0:04311b121ac4 | 1031 | // Convert from unix time structure |
JackB | 0:04311b121ac4 | 1032 | uint8_t second = (t->tm_sec); // 0-59 |
JackB | 0:04311b121ac4 | 1033 | uint8_t minute = (t->tm_min); // 0-59 |
JackB | 0:04311b121ac4 | 1034 | uint8_t hour = (t->tm_hour); // 0-23 |
JackB | 0:04311b121ac4 | 1035 | uint8_t dayOfWeek = (t->tm_wday + 1); // 1-7 (1 = Sunday) |
JackB | 0:04311b121ac4 | 1036 | uint8_t dayOfMonth = (t->tm_mday); // 1-31 |
JackB | 0:04311b121ac4 | 1037 | uint8_t month = (t->tm_mon + 1); // 1-12 |
JackB | 0:04311b121ac4 | 1038 | uint8_t year = (t->tm_year - 100); // 0-99 year since 2000 |
JackB | 0:04311b121ac4 | 1039 | |
JackB | 0:04311b121ac4 | 1040 | // Set RTC DateTime |
JackB | 0:04311b121ac4 | 1041 | setRtcDateTime(second, minute, hour, dayOfWeek, dayOfMonth, month, year); |
JackB | 0:04311b121ac4 | 1042 | } |
JackB | 0:04311b121ac4 | 1043 | |
JackB | 0:04311b121ac4 | 1044 | void MCP79412::setSystemToRtcDateTime(void) |
JackB | 0:04311b121ac4 | 1045 | { |
JackB | 0:04311b121ac4 | 1046 | // Get RTC DateTime |
JackB | 0:04311b121ac4 | 1047 | getRtcDateTime(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year); |
JackB | 0:04311b121ac4 | 1048 | |
JackB | 0:04311b121ac4 | 1049 | // Convert to unix time structure |
JackB | 0:04311b121ac4 | 1050 | t->tm_sec = second; // 0-59 |
JackB | 0:04311b121ac4 | 1051 | t->tm_min = minute; // 0-59 |
JackB | 0:04311b121ac4 | 1052 | t->tm_hour = hour; // 0-23 |
JackB | 0:04311b121ac4 | 1053 | t->tm_wday = dayOfWeek - 1; // 0-6 (0 = Sunday) |
JackB | 0:04311b121ac4 | 1054 | t->tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 1055 | t->tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 1056 | t->tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 1057 | t->tm_isdst = 0; |
JackB | 0:04311b121ac4 | 1058 | |
JackB | 0:04311b121ac4 | 1059 | // Set system DateTime |
JackB | 0:04311b121ac4 | 1060 | secondsEpoch = mktime(t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 1061 | set_time(secondsEpoch); |
JackB | 0:04311b121ac4 | 1062 | } |
JackB | 0:04311b121ac4 | 1063 | |
JackB | 0:04311b121ac4 | 1064 | void MCP79412::setRtcFromTm(struct tm *t) |
JackB | 0:04311b121ac4 | 1065 | { |
JackB | 0:04311b121ac4 | 1066 | // // Get system DateTime |
JackB | 0:04311b121ac4 | 1067 | // secondsEpoch = time(NULL); |
JackB | 0:04311b121ac4 | 1068 | // t = localtime(&secondsEpoch); |
JackB | 0:04311b121ac4 | 1069 | |
JackB | 0:04311b121ac4 | 1070 | // Convert from unix time structure |
JackB | 0:04311b121ac4 | 1071 | uint8_t second = (t->tm_sec); // 0-59 |
JackB | 0:04311b121ac4 | 1072 | uint8_t minute = (t->tm_min); // 0-59 |
JackB | 0:04311b121ac4 | 1073 | uint8_t hour = (t->tm_hour); // 0-23 |
JackB | 0:04311b121ac4 | 1074 | uint8_t dayOfWeek = (t->tm_wday + 1); // 1-7 (1 = Sunday) |
JackB | 0:04311b121ac4 | 1075 | uint8_t dayOfMonth = (t->tm_mday); // 1-31 |
JackB | 0:04311b121ac4 | 1076 | uint8_t month = (t->tm_mon + 1); // 1-12 |
JackB | 0:04311b121ac4 | 1077 | uint8_t year = (t->tm_year - 100); // 0-99 year since 2000 |
JackB | 0:04311b121ac4 | 1078 | |
JackB | 0:04311b121ac4 | 1079 | // printf("setRtcFromTm %d %02d-%02d-%03d %02d:%02d:%02d\n", dayOfWeek, dayOfMonth, month, year, hour, minute, second); |
JackB | 0:04311b121ac4 | 1080 | |
JackB | 0:04311b121ac4 | 1081 | // Set RTC DateTime |
JackB | 0:04311b121ac4 | 1082 | setRtcDateTime(second, minute, hour, dayOfWeek, dayOfMonth, month, year); |
JackB | 0:04311b121ac4 | 1083 | } |
JackB | 0:04311b121ac4 | 1084 | |
JackB | 0:04311b121ac4 | 1085 | struct tm MCP79412::getTmFromRtc(void) |
JackB | 0:04311b121ac4 | 1086 | { |
JackB | 0:04311b121ac4 | 1087 | // Get RTC DateTime |
JackB | 0:04311b121ac4 | 1088 | getRtcDateTime(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year); |
JackB | 0:04311b121ac4 | 1089 | |
JackB | 0:04311b121ac4 | 1090 | // Convert to unix time structure |
JackB | 0:04311b121ac4 | 1091 | t->tm_sec = second; // 0-59 |
JackB | 0:04311b121ac4 | 1092 | t->tm_min = minute; // 0-59 |
JackB | 0:04311b121ac4 | 1093 | t->tm_hour = hour; // 0-23 |
JackB | 0:04311b121ac4 | 1094 | t->tm_wday = dayOfWeek - 1; // 0-6 (0 = Sunday) |
JackB | 0:04311b121ac4 | 1095 | t->tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 1096 | t->tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 1097 | t->tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 1098 | t->tm_isdst = 0; |
JackB | 0:04311b121ac4 | 1099 | |
JackB | 0:04311b121ac4 | 1100 | return *t; |
JackB | 0:04311b121ac4 | 1101 | // // Set system DateTime |
JackB | 0:04311b121ac4 | 1102 | // secondsEpoch = mktime(t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 1103 | // set_time(secondsEpoch); |
JackB | 0:04311b121ac4 | 1104 | } |
JackB | 0:04311b121ac4 | 1105 | |
JackB | 0:04311b121ac4 | 1106 | time_t MCP79412::getSecondsEpoch(void) |
JackB | 0:04311b121ac4 | 1107 | { |
JackB | 0:04311b121ac4 | 1108 | secondsEpoch = time(NULL); |
JackB | 0:04311b121ac4 | 1109 | return secondsEpoch; |
JackB | 0:04311b121ac4 | 1110 | } |
JackB | 0:04311b121ac4 | 1111 | |
JackB | 0:04311b121ac4 | 1112 | void MCP79412::setSecondsEpoch(time_t t) |
JackB | 0:04311b121ac4 | 1113 | { |
JackB | 0:04311b121ac4 | 1114 | secondsEpoch = t; |
JackB | 0:04311b121ac4 | 1115 | set_time(secondsEpoch); |
JackB | 0:04311b121ac4 | 1116 | } |
JackB | 0:04311b121ac4 | 1117 | |
JackB | 0:04311b121ac4 | 1118 | void MCP79412::getRtcDateTimeAsTm(void) |
JackB | 0:04311b121ac4 | 1119 | { |
JackB | 0:04311b121ac4 | 1120 | // Get RTC DateTime |
JackB | 0:04311b121ac4 | 1121 | getRtcDateTime(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year); |
JackB | 0:04311b121ac4 | 1122 | |
JackB | 0:04311b121ac4 | 1123 | // Convert to unix time structure |
JackB | 0:04311b121ac4 | 1124 | t->tm_sec = second; // 0-59 |
JackB | 0:04311b121ac4 | 1125 | t->tm_min = minute; // 0-59 |
JackB | 0:04311b121ac4 | 1126 | t->tm_hour = hour; // 0-23 |
JackB | 0:04311b121ac4 | 1127 | t->tm_wday = dayOfWeek - 1; // 0-6 (0 = Sunday) |
JackB | 0:04311b121ac4 | 1128 | t->tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 1129 | t->tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 1130 | t->tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 1131 | t->tm_isdst = 0; |
JackB | 0:04311b121ac4 | 1132 | |
JackB | 0:04311b121ac4 | 1133 | // Set system DateTime |
JackB | 0:04311b121ac4 | 1134 | secondsEpoch = mktime(t); // seconds since the Epoch |
JackB | 0:04311b121ac4 | 1135 | // time_t t = time(secondsEpoch); |
JackB | 0:04311b121ac4 | 1136 | |
JackB | 0:04311b121ac4 | 1137 | // set_time(secondsEpoch); |
JackB | 0:04311b121ac4 | 1138 | } |
JackB | 0:04311b121ac4 | 1139 | |
JackB | 0:04311b121ac4 | 1140 | time_t MCP79412::convertDateTimeToTimestamp( |
JackB | 0:04311b121ac4 | 1141 | uint8_t second, // 0-59 |
JackB | 0:04311b121ac4 | 1142 | uint8_t minute, // 0-59 |
JackB | 0:04311b121ac4 | 1143 | uint8_t hour, // 0-23 |
JackB | 0:04311b121ac4 | 1144 | uint8_t dayOfMonth, // 1-31 |
JackB | 0:04311b121ac4 | 1145 | uint8_t month, // 1-12 |
JackB | 0:04311b121ac4 | 1146 | uint8_t year) // 0-99 year since 2000 |
JackB | 0:04311b121ac4 | 1147 | { |
JackB | 0:04311b121ac4 | 1148 | // setup time structure for Wed, 28 Oct 2009 11:35:37 |
JackB | 0:04311b121ac4 | 1149 | struct tm t; |
JackB | 0:04311b121ac4 | 1150 | t.tm_sec = second; // 0-59 |
JackB | 0:04311b121ac4 | 1151 | t.tm_min = minute; // 0-59 |
JackB | 0:04311b121ac4 | 1152 | t.tm_hour = hour; // 0-23 |
JackB | 0:04311b121ac4 | 1153 | t.tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 1154 | t.tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 1155 | t.tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 1156 | |
JackB | 0:04311b121ac4 | 1157 | // printf("Debug %d %02d-%02d-%03d %02d:%02d:%02d\n", t.tm_wday, t.tm_mday, t.tm_mon, t.tm_year, t.tm_hour, t.tm_min, t.tm_sec); |
JackB | 0:04311b121ac4 | 1158 | |
JackB | 0:04311b121ac4 | 1159 | // convert to timestamp and display (1256729737) |
JackB | 0:04311b121ac4 | 1160 | time_t seconds = mktime(&t); |
JackB | 0:04311b121ac4 | 1161 | // printf("Time as seconds since January 1, 1970 = %d\n", seconds); |
JackB | 0:04311b121ac4 | 1162 | |
JackB | 0:04311b121ac4 | 1163 | // char buffer[32]; |
JackB | 0:04311b121ac4 | 1164 | // strftime(buffer, 32, "%a %d-%m-%Y %H:%M:%S\n", localtime(&seconds)); |
JackB | 0:04311b121ac4 | 1165 | // printf("Time: %s", buffer); |
JackB | 0:04311b121ac4 | 1166 | |
JackB | 0:04311b121ac4 | 1167 | // Get weekday Sunday as 0 (0-6) for RTC |
JackB | 0:04311b121ac4 | 1168 | struct tm *t2; |
JackB | 0:04311b121ac4 | 1169 | t2 = localtime(&seconds); |
JackB | 0:04311b121ac4 | 1170 | // printf("Debug %d %02d-%02d-%03d %02d:%02d:%02d\n", t.tm_wday, t2->tm_mday, t2->tm_mon, t2->tm_year, t2->tm_hour, t2->tm_min, t2->tm_sec); |
JackB | 0:04311b121ac4 | 1171 | // printf("Weekday %d\n", t2->tm_wday); |
JackB | 0:04311b121ac4 | 1172 | |
JackB | 0:04311b121ac4 | 1173 | return seconds; |
JackB | 0:04311b121ac4 | 1174 | } |
JackB | 0:04311b121ac4 | 1175 | |
JackB | 0:04311b121ac4 | 1176 | uint8_t MCP79412::getWeekdayFromDate(uint8_t dayOfMonth, uint8_t month, uint8_t year) // year 0-99 |
JackB | 0:04311b121ac4 | 1177 | { |
JackB | 0:04311b121ac4 | 1178 | // setup time structure for Wed, 28 Oct 2009 11:35:37 |
JackB | 0:04311b121ac4 | 1179 | struct tm t; |
JackB | 0:04311b121ac4 | 1180 | t.tm_sec = 0; // 0-59 |
JackB | 0:04311b121ac4 | 1181 | t.tm_min = 0; // 0-59 |
JackB | 0:04311b121ac4 | 1182 | t.tm_hour = 0; // 0-23 |
JackB | 0:04311b121ac4 | 1183 | t.tm_mday = dayOfMonth; // 1-31 |
JackB | 0:04311b121ac4 | 1184 | t.tm_mon = month - 1; // 0-11 |
JackB | 0:04311b121ac4 | 1185 | t.tm_year = year + 100; // 100-199 year since 1900 |
JackB | 0:04311b121ac4 | 1186 | |
JackB | 0:04311b121ac4 | 1187 | // printf("Debug %d %02d:%02d:%02d %02d-%02d-%02d\n", t.tm_wday, t.tm_mday, t.tm_mon, t.tm_year, t.tm_hour, t.tm_min, t.tm_sec); |
JackB | 0:04311b121ac4 | 1188 | |
JackB | 0:04311b121ac4 | 1189 | // convert to timestamp and display (1256729737) |
JackB | 0:04311b121ac4 | 1190 | time_t seconds = mktime(&t); |
JackB | 0:04311b121ac4 | 1191 | // printf("Time as seconds since January 1, 1970 = %d\n", seconds); |
JackB | 0:04311b121ac4 | 1192 | |
JackB | 0:04311b121ac4 | 1193 | // char buffer[32]; |
JackB | 0:04311b121ac4 | 1194 | // strftime(buffer, 32, "%a %d-%m-%Y %H:%M:%S\n", localtime(&seconds)); |
JackB | 0:04311b121ac4 | 1195 | // printf("Time: %s", buffer); |
JackB | 0:04311b121ac4 | 1196 | |
JackB | 0:04311b121ac4 | 1197 | // Get weekday Sunday as 0 (0-6) for RTC |
JackB | 0:04311b121ac4 | 1198 | struct tm *t2; |
JackB | 0:04311b121ac4 | 1199 | t2 = localtime(&seconds); |
JackB | 0:04311b121ac4 | 1200 | // printf("Debug %d %02d-%02d-%03d %02d:%02d:%02d\n", t2->tm_wday, t2->tm_mday, t2->tm_mon, t2->tm_year, t2->tm_hour, t2->tm_min, t2->tm_sec); |
JackB | 0:04311b121ac4 | 1201 | // printf("Weekday %d\n", t2->tm_wday); |
JackB | 0:04311b121ac4 | 1202 | |
JackB | 0:04311b121ac4 | 1203 | return t2->tm_wday; |
JackB | 0:04311b121ac4 | 1204 | } |
JackB | 0:04311b121ac4 | 1205 | |
JackB | 0:04311b121ac4 | 1206 | |
JackB | 0:04311b121ac4 | 1207 | |
JackB | 0:04311b121ac4 | 1208 | |
JackB | 0:04311b121ac4 | 1209 | |
JackB | 0:04311b121ac4 | 1210 | |
JackB | 0:04311b121ac4 | 1211 | |
JackB | 0:04311b121ac4 | 1212 | |
JackB | 0:04311b121ac4 | 1213 | //double MCP79412::clamp(double v) |
JackB | 0:04311b121ac4 | 1214 | //{ |
JackB | 0:04311b121ac4 | 1215 | // const double t = v < 0.0f ? 0.0f : v; |
JackB | 0:04311b121ac4 | 1216 | // return t > 1.0f ? 1.0f : t; |
JackB | 0:04311b121ac4 | 1217 | //} |
JackB | 0:04311b121ac4 | 1218 | |
JackB | 0:04311b121ac4 | 1219 | |
JackB | 0:04311b121ac4 | 1220 | //bool MCP79412::checkTimeLost(void) |
JackB | 0:04311b121ac4 | 1221 | //{ |
JackB | 0:04311b121ac4 | 1222 | //// return (atoi(getFormatedDateTime("%Y")) <= 2015) ? true : false; |
JackB | 0:04311b121ac4 | 1223 | // return false; |
JackB | 0:04311b121ac4 | 1224 | //} |
JackB | 0:04311b121ac4 | 1225 | |
JackB | 0:04311b121ac4 | 1226 | // |
JackB | 0:04311b121ac4 | 1227 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1228 | // * Read the current time from the RTC and return it in a tmElements_t * |
JackB | 0:04311b121ac4 | 1229 | // * structure. Returns false if RTC not present (I2C I/O error). * |
JackB | 0:04311b121ac4 | 1230 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1231 | //boolean MCP79412RTC::read(tmElements_t &tm) |
JackB | 0:04311b121ac4 | 1232 | //{ |
JackB | 0:04311b121ac4 | 1233 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1234 | // i2cWrite((uint8_t)TIME_REG); |
JackB | 0:04311b121ac4 | 1235 | // if (i2cEndTransmission() != 0) { |
JackB | 0:04311b121ac4 | 1236 | // return false; |
JackB | 0:04311b121ac4 | 1237 | // } |
JackB | 0:04311b121ac4 | 1238 | // else { |
JackB | 0:04311b121ac4 | 1239 | // //request 7 uint8_ts (secs, min, hr, dow, date, mth, yr) |
JackB | 0:04311b121ac4 | 1240 | // i2cRequestFrom(RTC_ADDR, tmNbrFields); |
JackB | 0:04311b121ac4 | 1241 | // tm.Second = bcd2dec(i2cRead() & ~_BV(ST)); |
JackB | 0:04311b121ac4 | 1242 | // tm.Minute = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1243 | // tm.Hour = bcd2dec(i2cRead() & ~_BV(HR1224)); //assumes 24hr clock |
JackB | 0:04311b121ac4 | 1244 | // tm.Wday = i2cRead() & ~(_BV(OSCON) | _BV(VBAT) | _BV(VBATEN)); //mask off OSCON, VBAT, VBATEN bits |
JackB | 0:04311b121ac4 | 1245 | // tm.Day = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1246 | // tm.Month = bcd2dec(i2cRead() & ~_BV(LP)); //mask off the leap year bit |
JackB | 0:04311b121ac4 | 1247 | // tm.Year = y2kYearToTm(bcd2dec(i2cRead())); |
JackB | 0:04311b121ac4 | 1248 | // return true; |
JackB | 0:04311b121ac4 | 1249 | // } |
JackB | 0:04311b121ac4 | 1250 | //} |
JackB | 0:04311b121ac4 | 1251 | // |
JackB | 0:04311b121ac4 | 1252 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1253 | // * Set the RTC's time from a tmElements_t structure. * |
JackB | 0:04311b121ac4 | 1254 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1255 | //void MCP79412RTC::write(tmElements_t &tm) |
JackB | 0:04311b121ac4 | 1256 | //{ |
JackB | 0:04311b121ac4 | 1257 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1258 | // i2cWrite((uint8_t)TIME_REG); |
JackB | 0:04311b121ac4 | 1259 | // i2cWrite((uint8_t)0x00); //stops the oscillator (Bit 7, ST == 0) |
JackB | 0:04311b121ac4 | 1260 | // i2cWrite(dec2bcd(tm.Minute)); |
JackB | 0:04311b121ac4 | 1261 | // i2cWrite(dec2bcd(tm.Hour)); //sets 24 hour format (Bit 6 == 0) |
JackB | 0:04311b121ac4 | 1262 | // i2cWrite(tm.Wday | _BV(VBATEN)); //enable battery backup operation |
JackB | 0:04311b121ac4 | 1263 | // i2cWrite(dec2bcd(tm.Day)); |
JackB | 0:04311b121ac4 | 1264 | // i2cWrite(dec2bcd(tm.Month)); |
JackB | 0:04311b121ac4 | 1265 | // i2cWrite(dec2bcd(tmYearToY2k(tm.Year))); |
JackB | 0:04311b121ac4 | 1266 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1267 | // |
JackB | 0:04311b121ac4 | 1268 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1269 | // i2cWrite((uint8_t)TIME_REG); |
JackB | 0:04311b121ac4 | 1270 | // i2cWrite(dec2bcd(tm.Second) | _BV(ST)); //set the seconds and start the oscillator (Bit 7, ST == 1) |
JackB | 0:04311b121ac4 | 1271 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1272 | //} |
JackB | 0:04311b121ac4 | 1273 | // |
JackB | 0:04311b121ac4 | 1274 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1275 | // * Write a single uint8_t to RTC RAM. * |
JackB | 0:04311b121ac4 | 1276 | // * Valid address range is 0x00 - 0x5F, no checking. * |
JackB | 0:04311b121ac4 | 1277 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1278 | //void MCP79412RTC::ramWrite(uint8_t addr, uint8_t value) |
JackB | 0:04311b121ac4 | 1279 | //{ |
JackB | 0:04311b121ac4 | 1280 | // ramWrite(addr, &value, 1); |
JackB | 0:04311b121ac4 | 1281 | //} |
JackB | 0:04311b121ac4 | 1282 | // |
JackB | 0:04311b121ac4 | 1283 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1284 | // * Write multiple uint8_ts to RTC RAM. * |
JackB | 0:04311b121ac4 | 1285 | // * Valid address range is 0x00 - 0x5F, no checking. * |
JackB | 0:04311b121ac4 | 1286 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 31 (Wire library * |
JackB | 0:04311b121ac4 | 1287 | // * limitation). * |
JackB | 0:04311b121ac4 | 1288 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1289 | //void MCP79412RTC::ramWrite(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1290 | //{ |
JackB | 0:04311b121ac4 | 1291 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1292 | // i2cWrite(addr); |
JackB | 0:04311b121ac4 | 1293 | // for (uint8_t i=0; i<nuint8_ts; i++) i2cWrite(values[i]); |
JackB | 0:04311b121ac4 | 1294 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1295 | //} |
JackB | 0:04311b121ac4 | 1296 | // |
JackB | 0:04311b121ac4 | 1297 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1298 | // * Read a single uint8_t from RTC RAM. * |
JackB | 0:04311b121ac4 | 1299 | // * Valid address range is 0x00 - 0x5F, no checking. * |
JackB | 0:04311b121ac4 | 1300 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1301 | //uint8_t MCP79412RTC::ramRead(uint8_t addr) |
JackB | 0:04311b121ac4 | 1302 | //{ |
JackB | 0:04311b121ac4 | 1303 | // uint8_t value; |
JackB | 0:04311b121ac4 | 1304 | // |
JackB | 0:04311b121ac4 | 1305 | // ramRead(addr, &value, 1); |
JackB | 0:04311b121ac4 | 1306 | // return value; |
JackB | 0:04311b121ac4 | 1307 | //} |
JackB | 0:04311b121ac4 | 1308 | // |
JackB | 0:04311b121ac4 | 1309 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1310 | // * Read multiple uint8_ts from RTC RAM. * |
JackB | 0:04311b121ac4 | 1311 | // * Valid address range is 0x00 - 0x5F, no checking. * |
JackB | 0:04311b121ac4 | 1312 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 32 (Wire library * |
JackB | 0:04311b121ac4 | 1313 | // * limitation). * |
JackB | 0:04311b121ac4 | 1314 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1315 | //void MCP79412RTC::ramRead(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1316 | //{ |
JackB | 0:04311b121ac4 | 1317 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1318 | // i2cWrite(addr); |
JackB | 0:04311b121ac4 | 1319 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1320 | // i2cRequestFrom( (uint8_t)RTC_ADDR, nuint8_ts ); |
JackB | 0:04311b121ac4 | 1321 | // for (uint8_t i=0; i<nuint8_ts; i++) values[i] = i2cRead(); |
JackB | 0:04311b121ac4 | 1322 | //} |
JackB | 0:04311b121ac4 | 1323 | // |
JackB | 0:04311b121ac4 | 1324 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1325 | // * Write a single uint8_t to Static RAM. * |
JackB | 0:04311b121ac4 | 1326 | // * Address (addr) is constrained to the range (0, 63). * |
JackB | 0:04311b121ac4 | 1327 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1328 | //void MCP79412RTC::sramWrite(uint8_t addr, uint8_t value) |
JackB | 0:04311b121ac4 | 1329 | //{ |
JackB | 0:04311b121ac4 | 1330 | // ramWrite( (addr & (SRAM_SIZE - 1) ) + SRAM_START_ADDR, &value, 1 ); |
JackB | 0:04311b121ac4 | 1331 | //} |
JackB | 0:04311b121ac4 | 1332 | // |
JackB | 0:04311b121ac4 | 1333 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1334 | // * Write multiple uint8_ts to Static RAM. * |
JackB | 0:04311b121ac4 | 1335 | // * Address (addr) is constrained to the range (0, 63). * |
JackB | 0:04311b121ac4 | 1336 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 31 (Wire library * |
JackB | 0:04311b121ac4 | 1337 | // * limitation). * |
JackB | 0:04311b121ac4 | 1338 | // * Invalid values for nuint8_ts, or combinations of addr and nuint8_ts * |
JackB | 0:04311b121ac4 | 1339 | // * that would result in addressing past the last uint8_t of SRAM will * |
JackB | 0:04311b121ac4 | 1340 | // * result in no action. * |
JackB | 0:04311b121ac4 | 1341 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1342 | //void MCP79412RTC::sramWrite(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1343 | //{ |
JackB | 0:04311b121ac4 | 1344 | //#if defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__) |
JackB | 0:04311b121ac4 | 1345 | // if (nuint8_ts >= 1 && (addr + nuint8_ts) <= SRAM_SIZE) { |
JackB | 0:04311b121ac4 | 1346 | //#else |
JackB | 0:04311b121ac4 | 1347 | // if (nuint8_ts >= 1 && nuint8_ts <= (BUFFER_LENGTH - 1) && (addr + nuint8_ts) <= SRAM_SIZE) { |
JackB | 0:04311b121ac4 | 1348 | //#endif |
JackB | 0:04311b121ac4 | 1349 | // ramWrite( (addr & (SRAM_SIZE - 1) ) + SRAM_START_ADDR, values, nuint8_ts ); |
JackB | 0:04311b121ac4 | 1350 | // } |
JackB | 0:04311b121ac4 | 1351 | //} |
JackB | 0:04311b121ac4 | 1352 | // |
JackB | 0:04311b121ac4 | 1353 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1354 | // * Read a single uint8_t from Static RAM. * |
JackB | 0:04311b121ac4 | 1355 | // * Address (addr) is constrained to the range (0, 63). * |
JackB | 0:04311b121ac4 | 1356 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1357 | //uint8_t MCP79412RTC::sramRead(uint8_t addr) |
JackB | 0:04311b121ac4 | 1358 | //{ |
JackB | 0:04311b121ac4 | 1359 | // uint8_t value; |
JackB | 0:04311b121ac4 | 1360 | // |
JackB | 0:04311b121ac4 | 1361 | // ramRead( (addr & (SRAM_SIZE - 1) ) + SRAM_START_ADDR, &value, 1 ); |
JackB | 0:04311b121ac4 | 1362 | // return value; |
JackB | 0:04311b121ac4 | 1363 | //} |
JackB | 0:04311b121ac4 | 1364 | // |
JackB | 0:04311b121ac4 | 1365 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1366 | // * Read multiple uint8_ts from Static RAM. * |
JackB | 0:04311b121ac4 | 1367 | // * Address (addr) is constrained to the range (0, 63). * |
JackB | 0:04311b121ac4 | 1368 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 32 (Wire library * |
JackB | 0:04311b121ac4 | 1369 | // * limitation). * |
JackB | 0:04311b121ac4 | 1370 | // * Invalid values for nuint8_ts, or combinations of addr and * |
JackB | 0:04311b121ac4 | 1371 | // * nuint8_ts that would result in addressing past the last uint8_t of SRAM * |
JackB | 0:04311b121ac4 | 1372 | // * result in no action. * |
JackB | 0:04311b121ac4 | 1373 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1374 | //void MCP79412RTC::sramRead(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1375 | //{ |
JackB | 0:04311b121ac4 | 1376 | //#if defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__) |
JackB | 0:04311b121ac4 | 1377 | // if (nuint8_ts >= 1 && (addr + nuint8_ts) <= SRAM_SIZE) { |
JackB | 0:04311b121ac4 | 1378 | //#else |
JackB | 0:04311b121ac4 | 1379 | // if (nuint8_ts >= 1 && nuint8_ts <= BUFFER_LENGTH && (addr + nuint8_ts) <= SRAM_SIZE) { |
JackB | 0:04311b121ac4 | 1380 | //#endif |
JackB | 0:04311b121ac4 | 1381 | // ramRead((addr & (SRAM_SIZE - 1) ) + SRAM_START_ADDR, values, nuint8_ts); |
JackB | 0:04311b121ac4 | 1382 | // } |
JackB | 0:04311b121ac4 | 1383 | //} |
JackB | 0:04311b121ac4 | 1384 | // |
JackB | 0:04311b121ac4 | 1385 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1386 | // * Write a single uint8_t to EEPROM. * |
JackB | 0:04311b121ac4 | 1387 | // * Address (addr) is constrained to the range (0, 127). * |
JackB | 0:04311b121ac4 | 1388 | // * Can't leverage page write function because a write can't start * |
JackB | 0:04311b121ac4 | 1389 | // * mid-page. * |
JackB | 0:04311b121ac4 | 1390 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1391 | //void MCP79412RTC::eepromWrite(uint8_t addr, uint8_t value) |
JackB | 0:04311b121ac4 | 1392 | //{ |
JackB | 0:04311b121ac4 | 1393 | // i2cBeginTransmission(MCP79412_EEPROM_ADDR); |
JackB | 0:04311b121ac4 | 1394 | // i2cWrite( addr & (EEPROM_SIZE - 1) ); |
JackB | 0:04311b121ac4 | 1395 | // i2cWrite(value); |
JackB | 0:04311b121ac4 | 1396 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1397 | // eepromWait(); |
JackB | 0:04311b121ac4 | 1398 | //} |
JackB | 0:04311b121ac4 | 1399 | // |
JackB | 0:04311b121ac4 | 1400 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1401 | // * Write a page (or less) to EEPROM. An EEPROM page is 8 uint8_ts. * |
JackB | 0:04311b121ac4 | 1402 | // * Address (addr) should be a page start address (0, 8, ..., 120), but * |
JackB | 0:04311b121ac4 | 1403 | // * is ruthlessly coerced into a valid value. * |
JackB | 0:04311b121ac4 | 1404 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 8, other values * |
JackB | 0:04311b121ac4 | 1405 | // * result in no action. * |
JackB | 0:04311b121ac4 | 1406 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1407 | //void MCP79412RTC::eepromWrite(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1408 | //{ |
JackB | 0:04311b121ac4 | 1409 | // if (nuint8_ts >= 1 && nuint8_ts <= EEPROM_PAGE_SIZE) { |
JackB | 0:04311b121ac4 | 1410 | // i2cBeginTransmission(MCP79412_EEPROM_ADDR); |
JackB | 0:04311b121ac4 | 1411 | // i2cWrite( addr & ~(EEPROM_PAGE_SIZE - 1) & (EEPROM_SIZE - 1) ); |
JackB | 0:04311b121ac4 | 1412 | // for (uint8_t i=0; i<nuint8_ts; i++) i2cWrite(values[i]); |
JackB | 0:04311b121ac4 | 1413 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1414 | // eepromWait(); |
JackB | 0:04311b121ac4 | 1415 | // } |
JackB | 0:04311b121ac4 | 1416 | //} |
JackB | 0:04311b121ac4 | 1417 | // |
JackB | 0:04311b121ac4 | 1418 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1419 | // * Read a single uint8_t from EEPROM. * |
JackB | 0:04311b121ac4 | 1420 | // * Address (addr) is constrained to the range (0, 127). * |
JackB | 0:04311b121ac4 | 1421 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1422 | //uint8_t MCP79412RTC::eepromRead(uint8_t addr) |
JackB | 0:04311b121ac4 | 1423 | //{ |
JackB | 0:04311b121ac4 | 1424 | // uint8_t value; |
JackB | 0:04311b121ac4 | 1425 | // |
JackB | 0:04311b121ac4 | 1426 | // eepromRead( addr & (EEPROM_SIZE - 1), &value, 1 ); |
JackB | 0:04311b121ac4 | 1427 | // return value; |
JackB | 0:04311b121ac4 | 1428 | //} |
JackB | 0:04311b121ac4 | 1429 | // |
JackB | 0:04311b121ac4 | 1430 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1431 | // * Read multiple uint8_ts from EEPROM. * |
JackB | 0:04311b121ac4 | 1432 | // * Address (addr) is constrained to the range (0, 127). * |
JackB | 0:04311b121ac4 | 1433 | // * Number of uint8_ts (nuint8_ts) must be between 1 and 32 (Wire library * |
JackB | 0:04311b121ac4 | 1434 | // * limitation). * |
JackB | 0:04311b121ac4 | 1435 | // * Invalid values for addr or nuint8_ts, or combinations of addr and * |
JackB | 0:04311b121ac4 | 1436 | // * nuint8_ts that would result in addressing past the last uint8_t of EEPROM * |
JackB | 0:04311b121ac4 | 1437 | // * result in no action. * |
JackB | 0:04311b121ac4 | 1438 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1439 | //void MCP79412RTC::eepromRead(uint8_t addr, uint8_t *values, uint8_t nuint8_ts) |
JackB | 0:04311b121ac4 | 1440 | //{ |
JackB | 0:04311b121ac4 | 1441 | //#if defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__) |
JackB | 0:04311b121ac4 | 1442 | // if (nuint8_ts >= 1 && (addr + nuint8_ts) <= EEPROM_SIZE) { |
JackB | 0:04311b121ac4 | 1443 | //#else |
JackB | 0:04311b121ac4 | 1444 | // if (nuint8_ts >= 1 && nuint8_ts <= BUFFER_LENGTH && (addr + nuint8_ts) <= EEPROM_SIZE) { |
JackB | 0:04311b121ac4 | 1445 | //#endif |
JackB | 0:04311b121ac4 | 1446 | // i2cBeginTransmission(MCP79412_EEPROM_ADDR); |
JackB | 0:04311b121ac4 | 1447 | // i2cWrite( addr & (EEPROM_SIZE - 1) ); |
JackB | 0:04311b121ac4 | 1448 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1449 | // i2cRequestFrom( (uint8_t)MCP79412_EEPROM_ADDR, nuint8_ts ); |
JackB | 0:04311b121ac4 | 1450 | // for (uint8_t i=0; i<nuint8_ts; i++) values[i] = i2cRead(); |
JackB | 0:04311b121ac4 | 1451 | // } |
JackB | 0:04311b121ac4 | 1452 | //} |
JackB | 0:04311b121ac4 | 1453 | // |
JackB | 0:04311b121ac4 | 1454 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1455 | // * Wait for EEPROM write to complete. * |
JackB | 0:04311b121ac4 | 1456 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1457 | //uint8_t MCP79412RTC::eepromWait(void) |
JackB | 0:04311b121ac4 | 1458 | //{ |
JackB | 0:04311b121ac4 | 1459 | // uint8_t waitCount = 0; |
JackB | 0:04311b121ac4 | 1460 | // uint8_t txStatus; |
JackB | 0:04311b121ac4 | 1461 | // |
JackB | 0:04311b121ac4 | 1462 | // do |
JackB | 0:04311b121ac4 | 1463 | // { |
JackB | 0:04311b121ac4 | 1464 | // ++waitCount; |
JackB | 0:04311b121ac4 | 1465 | // i2cBeginTransmission(MCP79412_EEPROM_ADDR); |
JackB | 0:04311b121ac4 | 1466 | // i2cWrite((uint8_t)0); |
JackB | 0:04311b121ac4 | 1467 | // txStatus = i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1468 | // |
JackB | 0:04311b121ac4 | 1469 | // } while (txStatus != 0); |
JackB | 0:04311b121ac4 | 1470 | // |
JackB | 0:04311b121ac4 | 1471 | // return waitCount; |
JackB | 0:04311b121ac4 | 1472 | //} |
JackB | 0:04311b121ac4 | 1473 | // |
JackB | 0:04311b121ac4 | 1474 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1475 | // * Read the calibration register. * |
JackB | 0:04311b121ac4 | 1476 | // * The calibration value is not a twos-complement number. The MSB is * |
JackB | 0:04311b121ac4 | 1477 | // * the sign bit, and the 7 LSBs are an unsigned number, so we convert * |
JackB | 0:04311b121ac4 | 1478 | // * it and return it to the caller as a regular twos-complement integer. * |
JackB | 0:04311b121ac4 | 1479 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1480 | //int MCP79412RTC::calibRead(void) |
JackB | 0:04311b121ac4 | 1481 | //{ |
JackB | 0:04311b121ac4 | 1482 | // uint8_t val = ramRead(CALIB_REG); |
JackB | 0:04311b121ac4 | 1483 | // |
JackB | 0:04311b121ac4 | 1484 | // if ( val & 0x80 ) return -(val & 0x7F); |
JackB | 0:04311b121ac4 | 1485 | // else return val; |
JackB | 0:04311b121ac4 | 1486 | //} |
JackB | 0:04311b121ac4 | 1487 | // |
JackB | 0:04311b121ac4 | 1488 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1489 | // * Write the calibration register. * |
JackB | 0:04311b121ac4 | 1490 | // * Calibration value must be between -127 and 127, others result * |
JackB | 0:04311b121ac4 | 1491 | // * in no action. See note above on the format of the calibration value. * |
JackB | 0:04311b121ac4 | 1492 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1493 | //void MCP79412RTC::calibWrite(int value) |
JackB | 0:04311b121ac4 | 1494 | //{ |
JackB | 0:04311b121ac4 | 1495 | // uint8_t calibVal; |
JackB | 0:04311b121ac4 | 1496 | // |
JackB | 0:04311b121ac4 | 1497 | // if (value >= -127 && value <= 127) { |
JackB | 0:04311b121ac4 | 1498 | // calibVal = abs(value); |
JackB | 0:04311b121ac4 | 1499 | // if (value < 0) calibVal += 128; |
JackB | 0:04311b121ac4 | 1500 | // ramWrite(CALIB_REG, calibVal); |
JackB | 0:04311b121ac4 | 1501 | // } |
JackB | 0:04311b121ac4 | 1502 | //} |
JackB | 0:04311b121ac4 | 1503 | // |
JackB | 0:04311b121ac4 | 1504 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1505 | // * Read the unique ID. * |
JackB | 0:04311b121ac4 | 1506 | // * For the MCP79411 (EUI-48), the first two uint8_ts will contain 0xFF. * |
JackB | 0:04311b121ac4 | 1507 | // * Caller must provide an 8-uint8_t array to contain the results. * |
JackB | 0:04311b121ac4 | 1508 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1509 | //void MCP79412RTC::idRead(uint8_t *uniqueID) |
JackB | 0:04311b121ac4 | 1510 | //{ |
JackB | 0:04311b121ac4 | 1511 | // i2cBeginTransmission(MCP79412_EEPROM_ADDR); |
JackB | 0:04311b121ac4 | 1512 | // i2cWrite(UNIQUE_ID_ADDR); |
JackB | 0:04311b121ac4 | 1513 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1514 | // i2cRequestFrom( MCP79412_EEPROM_ADDR, UNIQUE_ID_SIZE ); |
JackB | 0:04311b121ac4 | 1515 | // for (uint8_t i=0; i<UNIQUE_ID_SIZE; i++) uniqueID[i] = i2cRead(); |
JackB | 0:04311b121ac4 | 1516 | //} |
JackB | 0:04311b121ac4 | 1517 | // |
JackB | 0:04311b121ac4 | 1518 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1519 | // * Returns an EUI-64 ID. For an MCP79411, the EUI-48 ID is converted to * |
JackB | 0:04311b121ac4 | 1520 | // * EUI-64. For an MCP79412, calling this function is equivalent to * |
JackB | 0:04311b121ac4 | 1521 | // * calling idRead(). For an MCP79412, if the RTC type is known, calling * |
JackB | 0:04311b121ac4 | 1522 | // * idRead() will be a bit more efficient. * |
JackB | 0:04311b121ac4 | 1523 | // * Caller must provide an 8-uint8_t array to contain the results. * |
JackB | 0:04311b121ac4 | 1524 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1525 | //void MCP79412RTC::getEUI64(uint8_t *uniqueID) |
JackB | 0:04311b121ac4 | 1526 | //{ |
JackB | 0:04311b121ac4 | 1527 | // uint8_t rtcID[8]; |
JackB | 0:04311b121ac4 | 1528 | // |
JackB | 0:04311b121ac4 | 1529 | // idRead(rtcID); |
JackB | 0:04311b121ac4 | 1530 | // if (rtcID[0] == 0xFF && rtcID[1] == 0xFF) { |
JackB | 0:04311b121ac4 | 1531 | // rtcID[0] = rtcID[2]; |
JackB | 0:04311b121ac4 | 1532 | // rtcID[1] = rtcID[3]; |
JackB | 0:04311b121ac4 | 1533 | // rtcID[2] = rtcID[4]; |
JackB | 0:04311b121ac4 | 1534 | // rtcID[3] = 0xFF; |
JackB | 0:04311b121ac4 | 1535 | // rtcID[4] = 0xFE; |
JackB | 0:04311b121ac4 | 1536 | // } |
JackB | 0:04311b121ac4 | 1537 | // for (uint8_t i=0; i<UNIQUE_ID_SIZE; i++) uniqueID[i] = rtcID[i]; |
JackB | 0:04311b121ac4 | 1538 | //} |
JackB | 0:04311b121ac4 | 1539 | // |
JackB | 0:04311b121ac4 | 1540 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1541 | // * Check to see if a power failure has occurred. If so, returns TRUE * |
JackB | 0:04311b121ac4 | 1542 | // * as the function value, and returns the power down and power up * |
JackB | 0:04311b121ac4 | 1543 | // * timestamps. After returning the time stamps, the RTC's timestamp * |
JackB | 0:04311b121ac4 | 1544 | // * registers are cleared and the VBAT bit which indicates a power * |
JackB | 0:04311b121ac4 | 1545 | // * failure is reset. * |
JackB | 0:04311b121ac4 | 1546 | // * * |
JackB | 0:04311b121ac4 | 1547 | // * Note that the power down and power up timestamp registers do not * |
JackB | 0:04311b121ac4 | 1548 | // * contain values for seconds or for the year. The returned time stamps * |
JackB | 0:04311b121ac4 | 1549 | // * will therefore contain the current year from the RTC. However, there * |
JackB | 0:04311b121ac4 | 1550 | // * is a chance that a power outage spans from one year to the next. * |
JackB | 0:04311b121ac4 | 1551 | // * If we find the power down timestamp to be later (larger) than the * |
JackB | 0:04311b121ac4 | 1552 | // * power up timestamp, we will assume this has happened, and well * |
JackB | 0:04311b121ac4 | 1553 | // * subtract one year from the power down timestamp. * |
JackB | 0:04311b121ac4 | 1554 | // * * |
JackB | 0:04311b121ac4 | 1555 | // * Still, there is an assumption that the timestamps are being read * |
JackB | 0:04311b121ac4 | 1556 | // * in the same year as that when the power up occurred. * |
JackB | 0:04311b121ac4 | 1557 | // * * |
JackB | 0:04311b121ac4 | 1558 | // * Finally, note that once the RTC records a power outage, it must be * |
JackB | 0:04311b121ac4 | 1559 | // * cleared before another will be recorded. * |
JackB | 0:04311b121ac4 | 1560 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1561 | //boolean MCP79412RTC::powerFail(time_t *powerDown, time_t *powerUp) |
JackB | 0:04311b121ac4 | 1562 | //{ |
JackB | 0:04311b121ac4 | 1563 | // uint8_t day, yr; //copies of the RTC Day and Year registers |
JackB | 0:04311b121ac4 | 1564 | // tmElements_t dn, up; //power down and power up times |
JackB | 0:04311b121ac4 | 1565 | // |
JackB | 0:04311b121ac4 | 1566 | // ramRead(DAY_REG, &day, 1); |
JackB | 0:04311b121ac4 | 1567 | // ramRead(YEAR_REG, &yr, 1); |
JackB | 0:04311b121ac4 | 1568 | // yr = y2kYearToTm(bcd2dec(yr)); |
JackB | 0:04311b121ac4 | 1569 | // if ( day & _BV(VBAT) ) { |
JackB | 0:04311b121ac4 | 1570 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1571 | // i2cWrite(PWRDWN_TS_REG); |
JackB | 0:04311b121ac4 | 1572 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1573 | // |
JackB | 0:04311b121ac4 | 1574 | // i2cRequestFrom(RTC_ADDR, TIMESTAMP_SIZE); //read both timestamp registers, 8 uint8_ts total |
JackB | 0:04311b121ac4 | 1575 | // dn.Second = 0; |
JackB | 0:04311b121ac4 | 1576 | // dn.Minute = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1577 | // dn.Hour = bcd2dec(i2cRead() & ~_BV(HR1224)); //assumes 24hr clock |
JackB | 0:04311b121ac4 | 1578 | // dn.Day = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1579 | // dn.Month = bcd2dec(i2cRead() & 0x1F); //mask off the day, we don't need it |
JackB | 0:04311b121ac4 | 1580 | // dn.Year = yr; //assume current year |
JackB | 0:04311b121ac4 | 1581 | // up.Second = 0; |
JackB | 0:04311b121ac4 | 1582 | // up.Minute = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1583 | // up.Hour = bcd2dec(i2cRead() & ~_BV(HR1224)); //assumes 24hr clock |
JackB | 0:04311b121ac4 | 1584 | // up.Day = bcd2dec(i2cRead()); |
JackB | 0:04311b121ac4 | 1585 | // up.Month = bcd2dec(i2cRead() & 0x1F); //mask off the day, we don't need it |
JackB | 0:04311b121ac4 | 1586 | // up.Year = yr; //assume current year |
JackB | 0:04311b121ac4 | 1587 | // |
JackB | 0:04311b121ac4 | 1588 | // *powerDown = makeTime(dn); |
JackB | 0:04311b121ac4 | 1589 | // *powerUp = makeTime(up); |
JackB | 0:04311b121ac4 | 1590 | // |
JackB | 0:04311b121ac4 | 1591 | // //clear the VBAT bit, which causes the RTC hardware to clear the timestamps too. |
JackB | 0:04311b121ac4 | 1592 | // //I suppose there is a risk here that the day has changed since we read it, |
JackB | 0:04311b121ac4 | 1593 | // //but the Day of Week is actually redundant data and the makeTime() function |
JackB | 0:04311b121ac4 | 1594 | // //does not use it. This could be an issue if someone is reading the RTC |
JackB | 0:04311b121ac4 | 1595 | // //registers directly, but as this library is meant to be used with the Time library, |
JackB | 0:04311b121ac4 | 1596 | // //and also because we don't provide a method to read the RTC clock/calendar |
JackB | 0:04311b121ac4 | 1597 | // //registers directly, we won't lose any sleep about it at this point unless |
JackB | 0:04311b121ac4 | 1598 | // //some issue is actually brought to our attention ;-) |
JackB | 0:04311b121ac4 | 1599 | // day &= ~_BV(VBAT); |
JackB | 0:04311b121ac4 | 1600 | // ramWrite(DAY_REG, &day , 1); |
JackB | 0:04311b121ac4 | 1601 | // |
JackB | 0:04311b121ac4 | 1602 | // //adjust the powerDown timestamp if needed (see notes above) |
JackB | 0:04311b121ac4 | 1603 | // if (*powerDown > *powerUp) { |
JackB | 0:04311b121ac4 | 1604 | // --dn.Year; |
JackB | 0:04311b121ac4 | 1605 | // *powerDown = makeTime(dn); |
JackB | 0:04311b121ac4 | 1606 | // } |
JackB | 0:04311b121ac4 | 1607 | // return true; |
JackB | 0:04311b121ac4 | 1608 | // } |
JackB | 0:04311b121ac4 | 1609 | // else |
JackB | 0:04311b121ac4 | 1610 | // return false; |
JackB | 0:04311b121ac4 | 1611 | //} |
JackB | 0:04311b121ac4 | 1612 | // |
JackB | 0:04311b121ac4 | 1613 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1614 | // * Enable or disable the square wave output. * |
JackB | 0:04311b121ac4 | 1615 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1616 | //void MCP79412RTC::squareWave(uint8_t freq) |
JackB | 0:04311b121ac4 | 1617 | //{ |
JackB | 0:04311b121ac4 | 1618 | // uint8_t ctrlReg; |
JackB | 0:04311b121ac4 | 1619 | // |
JackB | 0:04311b121ac4 | 1620 | // ramRead(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 1621 | // if (freq > 3) { |
JackB | 0:04311b121ac4 | 1622 | // ctrlReg &= ~_BV(SQWE); |
JackB | 0:04311b121ac4 | 1623 | // } |
JackB | 0:04311b121ac4 | 1624 | // else { |
JackB | 0:04311b121ac4 | 1625 | // ctrlReg = (ctrlReg & 0xF8) | _BV(SQWE) | freq; |
JackB | 0:04311b121ac4 | 1626 | // } |
JackB | 0:04311b121ac4 | 1627 | // ramWrite(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 1628 | //} |
JackB | 0:04311b121ac4 | 1629 | // |
JackB | 0:04311b121ac4 | 1630 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1631 | // * Set an alarm time. Sets the alarm registers only, does not enable * |
JackB | 0:04311b121ac4 | 1632 | // * the alarm. See enableAlarm(). * |
JackB | 0:04311b121ac4 | 1633 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1634 | //void MCP79412RTC::setAlarm(uint8_t alarmNumber, time_t alarmTime) |
JackB | 0:04311b121ac4 | 1635 | //{ |
JackB | 0:04311b121ac4 | 1636 | // tmElements_t tm; |
JackB | 0:04311b121ac4 | 1637 | // uint8_t day; //need to preserve bits in the day (of week) register |
JackB | 0:04311b121ac4 | 1638 | // |
JackB | 0:04311b121ac4 | 1639 | // alarmNumber &= 0x01; //ensure a valid alarm number |
JackB | 0:04311b121ac4 | 1640 | // ramRead( ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG) , &day, 1); |
JackB | 0:04311b121ac4 | 1641 | // breakTime(alarmTime, tm); |
JackB | 0:04311b121ac4 | 1642 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1643 | // i2cWrite( ALM0_REG + alarmNumber * (ALM1_REG - ALM0_REG) ); |
JackB | 0:04311b121ac4 | 1644 | // i2cWrite(dec2bcd(tm.Second)); |
JackB | 0:04311b121ac4 | 1645 | // i2cWrite(dec2bcd(tm.Minute)); |
JackB | 0:04311b121ac4 | 1646 | // i2cWrite(dec2bcd(tm.Hour)); //sets 24 hour format (Bit 6 == 0) |
JackB | 0:04311b121ac4 | 1647 | // i2cWrite( (day & 0xF8) + tm.Wday ); |
JackB | 0:04311b121ac4 | 1648 | // i2cWrite(dec2bcd(tm.Day)); |
JackB | 0:04311b121ac4 | 1649 | // i2cWrite(dec2bcd(tm.Month)); |
JackB | 0:04311b121ac4 | 1650 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1651 | //} |
JackB | 0:04311b121ac4 | 1652 | // |
JackB | 0:04311b121ac4 | 1653 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1654 | // * Enable or disable an alarm, and set the trigger criteria, * |
JackB | 0:04311b121ac4 | 1655 | // * e.g. match only seconds, only minutes, entire time and date, etc. * |
JackB | 0:04311b121ac4 | 1656 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1657 | //void MCP79412RTC::enableAlarm(uint8_t alarmNumber, uint8_t alarmType) |
JackB | 0:04311b121ac4 | 1658 | //{ |
JackB | 0:04311b121ac4 | 1659 | // uint8_t day; //alarm day register has config & flag bits |
JackB | 0:04311b121ac4 | 1660 | // uint8_t ctrl; //control register has alarm enable bits |
JackB | 0:04311b121ac4 | 1661 | // |
JackB | 0:04311b121ac4 | 1662 | // alarmNumber &= 0x01; //ensure a valid alarm number |
JackB | 0:04311b121ac4 | 1663 | // ramRead(CTRL_REG, &ctrl, 1); |
JackB | 0:04311b121ac4 | 1664 | // if (alarmType < ALM_DISABLE) { |
JackB | 0:04311b121ac4 | 1665 | // ramRead(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 1666 | // day = ( day & 0x87 ) | alarmType << 4; //reset interrupt flag, OR in the config bits |
JackB | 0:04311b121ac4 | 1667 | // ramWrite(ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 1668 | // ctrl |= _BV(ALM0 + alarmNumber); //enable the alarm |
JackB | 0:04311b121ac4 | 1669 | // } |
JackB | 0:04311b121ac4 | 1670 | // else { |
JackB | 0:04311b121ac4 | 1671 | // ctrl &= ~(_BV(ALM0 + alarmNumber)); //disable the alarm |
JackB | 0:04311b121ac4 | 1672 | // } |
JackB | 0:04311b121ac4 | 1673 | // ramWrite(CTRL_REG, &ctrl, 1); |
JackB | 0:04311b121ac4 | 1674 | //} |
JackB | 0:04311b121ac4 | 1675 | // |
JackB | 0:04311b121ac4 | 1676 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1677 | // * Returns true or false depending on whether the given alarm has been * |
JackB | 0:04311b121ac4 | 1678 | // * triggered, and resets the alarm "interrupt" flag. This is not a real * |
JackB | 0:04311b121ac4 | 1679 | // * interrupt, just a bit that's set when an alarm is triggered. * |
JackB | 0:04311b121ac4 | 1680 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1681 | //boolean MCP79412RTC::alarm(uint8_t alarmNumber) |
JackB | 0:04311b121ac4 | 1682 | //{ |
JackB | 0:04311b121ac4 | 1683 | // uint8_t day; //alarm day register has config & flag bits |
JackB | 0:04311b121ac4 | 1684 | // |
JackB | 0:04311b121ac4 | 1685 | // alarmNumber &= 0x01; //ensure a valid alarm number |
JackB | 0:04311b121ac4 | 1686 | // ramRead( ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 1687 | // if (day & _BV(ALMIF)) { |
JackB | 0:04311b121ac4 | 1688 | // day &= ~_BV(ALMIF); //turn off the alarm "interrupt" flag |
JackB | 0:04311b121ac4 | 1689 | // ramWrite( ALM0_DAY + alarmNumber * (ALM1_REG - ALM0_REG), &day, 1); |
JackB | 0:04311b121ac4 | 1690 | // return true; |
JackB | 0:04311b121ac4 | 1691 | // } |
JackB | 0:04311b121ac4 | 1692 | // else |
JackB | 0:04311b121ac4 | 1693 | // return false; |
JackB | 0:04311b121ac4 | 1694 | //} |
JackB | 0:04311b121ac4 | 1695 | // |
JackB | 0:04311b121ac4 | 1696 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1697 | // * Sets the logic level on the MFP when it's not being used as a * |
JackB | 0:04311b121ac4 | 1698 | // * square wave or alarm output. The default is HIGH. * |
JackB | 0:04311b121ac4 | 1699 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1700 | //void MCP79412RTC::out(boolean level) |
JackB | 0:04311b121ac4 | 1701 | //{ |
JackB | 0:04311b121ac4 | 1702 | // uint8_t ctrlReg; |
JackB | 0:04311b121ac4 | 1703 | // |
JackB | 0:04311b121ac4 | 1704 | // ramRead(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 1705 | // if (level) |
JackB | 0:04311b121ac4 | 1706 | // ctrlReg |= _BV(OUT); |
JackB | 0:04311b121ac4 | 1707 | // else |
JackB | 0:04311b121ac4 | 1708 | // ctrlReg &= ~_BV(OUT); |
JackB | 0:04311b121ac4 | 1709 | // ramWrite(CTRL_REG, &ctrlReg, 1); |
JackB | 0:04311b121ac4 | 1710 | //} |
JackB | 0:04311b121ac4 | 1711 | // |
JackB | 0:04311b121ac4 | 1712 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1713 | // * Specifies the logic level on the Multi-Function Pin (MFP) when an * |
JackB | 0:04311b121ac4 | 1714 | // * alarm is triggered. The default is LOW. When both alarms are * |
JackB | 0:04311b121ac4 | 1715 | // * active, the two are ORed together to determine the level of the MFP. * |
JackB | 0:04311b121ac4 | 1716 | // * With alarm polarity set to LOW (the default), this causes the MFP * |
JackB | 0:04311b121ac4 | 1717 | // * to go low only when BOTH alarms are triggered. With alarm polarity * |
JackB | 0:04311b121ac4 | 1718 | // * set to HIGH, the MFP will go high when EITHER alarm is triggered. * |
JackB | 0:04311b121ac4 | 1719 | // * * |
JackB | 0:04311b121ac4 | 1720 | // * Note that the state of the MFP is independent of the alarm * |
JackB | 0:04311b121ac4 | 1721 | // * "interrupt" flags, and the alarm() function will indicate when an * |
JackB | 0:04311b121ac4 | 1722 | // * alarm is triggered regardless of the polarity. * |
JackB | 0:04311b121ac4 | 1723 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1724 | //void MCP79412RTC::alarmPolarity(boolean polarity) |
JackB | 0:04311b121ac4 | 1725 | //{ |
JackB | 0:04311b121ac4 | 1726 | // uint8_t alm0Day; |
JackB | 0:04311b121ac4 | 1727 | // |
JackB | 0:04311b121ac4 | 1728 | // ramRead(ALM0_DAY, &alm0Day, 1); |
JackB | 0:04311b121ac4 | 1729 | // if (polarity) |
JackB | 0:04311b121ac4 | 1730 | // alm0Day |= _BV(OUT); |
JackB | 0:04311b121ac4 | 1731 | // else |
JackB | 0:04311b121ac4 | 1732 | // alm0Day &= ~_BV(OUT); |
JackB | 0:04311b121ac4 | 1733 | // ramWrite(ALM0_DAY, &alm0Day, 1); |
JackB | 0:04311b121ac4 | 1734 | //} |
JackB | 0:04311b121ac4 | 1735 | // |
JackB | 0:04311b121ac4 | 1736 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1737 | // * Check to see if the RTC's oscillator is started (ST bit in seconds * |
JackB | 0:04311b121ac4 | 1738 | // * register). Returns true if started. * |
JackB | 0:04311b121ac4 | 1739 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1740 | //boolean MCP79412RTC::isRunning(void) |
JackB | 0:04311b121ac4 | 1741 | //{ |
JackB | 0:04311b121ac4 | 1742 | // i2cBeginTransmission(RTC_ADDR); |
JackB | 0:04311b121ac4 | 1743 | // i2cWrite((uint8_t)TIME_REG); |
JackB | 0:04311b121ac4 | 1744 | // i2cEndTransmission(); |
JackB | 0:04311b121ac4 | 1745 | // |
JackB | 0:04311b121ac4 | 1746 | // //request just the seconds register |
JackB | 0:04311b121ac4 | 1747 | // i2cRequestFrom(RTC_ADDR, 1); |
JackB | 0:04311b121ac4 | 1748 | // return i2cRead() & _BV(ST); |
JackB | 0:04311b121ac4 | 1749 | //} |
JackB | 0:04311b121ac4 | 1750 | // |
JackB | 0:04311b121ac4 | 1751 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1752 | // * Set or clear the VBATEN bit. Setting the bit powers the clock and * |
JackB | 0:04311b121ac4 | 1753 | // * SRAM from the backup battery when Vcc falls. Note that setting the * |
JackB | 0:04311b121ac4 | 1754 | // * time via set() or write() sets the VBATEN bit. * |
JackB | 0:04311b121ac4 | 1755 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1756 | //void MCP79412RTC::vbaten(boolean enable) |
JackB | 0:04311b121ac4 | 1757 | //{ |
JackB | 0:04311b121ac4 | 1758 | // uint8_t day; |
JackB | 0:04311b121ac4 | 1759 | // |
JackB | 0:04311b121ac4 | 1760 | // ramRead(DAY_REG, &day, 1); |
JackB | 0:04311b121ac4 | 1761 | // if (enable) |
JackB | 0:04311b121ac4 | 1762 | // day |= _BV(VBATEN); |
JackB | 0:04311b121ac4 | 1763 | // else |
JackB | 0:04311b121ac4 | 1764 | // day &= ~_BV(VBATEN); |
JackB | 0:04311b121ac4 | 1765 | // |
JackB | 0:04311b121ac4 | 1766 | // ramWrite(DAY_REG, &day, 1); |
JackB | 0:04311b121ac4 | 1767 | // return; |
JackB | 0:04311b121ac4 | 1768 | //} |
JackB | 0:04311b121ac4 | 1769 | |
JackB | 0:04311b121ac4 | 1770 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1771 | // * Decimal-to-BCD conversion * |
JackB | 0:04311b121ac4 | 1772 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1773 | //uint8_t MCP79412RTC::dec2bcd(uint8_t n) |
JackB | 0:04311b121ac4 | 1774 | //{ |
JackB | 0:04311b121ac4 | 1775 | // return n + 6 * (n / 10); |
JackB | 0:04311b121ac4 | 1776 | //} |
JackB | 0:04311b121ac4 | 1777 | // |
JackB | 0:04311b121ac4 | 1778 | ///*----------------------------------------------------------------------* |
JackB | 0:04311b121ac4 | 1779 | // * BCD-to-Decimal conversion * |
JackB | 0:04311b121ac4 | 1780 | // *----------------------------------------------------------------------*/ |
JackB | 0:04311b121ac4 | 1781 | //uint8_t __attribute__ ((noinline)) MCP79412RTC::bcd2dec(uint8_t n) |
JackB | 0:04311b121ac4 | 1782 | //{ |
JackB | 0:04311b121ac4 | 1783 | // return n - 6 * (n >> 4); |
JackB | 0:04311b121ac4 | 1784 | //} |
JackB | 0:04311b121ac4 | 1785 | |
JackB | 0:04311b121ac4 | 1786 | // BCD to decimal conversion |
JackB | 0:04311b121ac4 | 1787 | int MCP79412::bcd2dec(int bcd) |
JackB | 0:04311b121ac4 | 1788 | { |
JackB | 0:04311b121ac4 | 1789 | return(((bcd & 0xF0) >> 4) * 10 + (bcd & 0x0F)); |
JackB | 0:04311b121ac4 | 1790 | } |
JackB | 0:04311b121ac4 | 1791 | |
JackB | 0:04311b121ac4 | 1792 | // decimal to BCD conversion |
JackB | 0:04311b121ac4 | 1793 | int MCP79412::dec2bcd(int dec) |
JackB | 0:04311b121ac4 | 1794 | { |
JackB | 0:04311b121ac4 | 1795 | return((dec / 10) * 16 + (dec % 10)); |
JackB | 0:04311b121ac4 | 1796 | } |
JackB | 0:04311b121ac4 | 1797 | |
JackB | 0:04311b121ac4 | 1798 | // Convert normal decimal numbers to binary coded decimal: |
JackB | 0:04311b121ac4 | 1799 | int MCP79412::decToBcd(int val) |
JackB | 0:04311b121ac4 | 1800 | { |
JackB | 0:04311b121ac4 | 1801 | return ( (val/10*16) + (val%10) ); |
JackB | 0:04311b121ac4 | 1802 | } |
JackB | 0:04311b121ac4 | 1803 | |
JackB | 0:04311b121ac4 | 1804 | // Convert binary coded decimal to normal decimal numbers: |
JackB | 0:04311b121ac4 | 1805 | int MCP79412::bcdToDec(int val) |
JackB | 0:04311b121ac4 | 1806 | { |
JackB | 0:04311b121ac4 | 1807 | return ( (val/16*10) + (val%16) ); |
JackB | 0:04311b121ac4 | 1808 | } |