Arslan Test
Dependencies: AMS_ENS210_temp_humid_sensor
AMS_CCS811.cpp@15:cf658680c53f, 2019-03-05 (annotated)
- Committer:
- Steven Cooreman
- Date:
- Tue Mar 05 20:18:27 2019 +0100
- Revision:
- 15:cf658680c53f
- Parent:
- 14:0e8f5bf68b50
Added FW v2.0.0 for CCS811 and introduced usage of mbed_trace
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
UHSLMarcus | 0:5edbf3550350 | 1 | |
UHSLMarcus | 2:e394671ef5f6 | 2 | #include "AMS_CCS811.h" |
Steven Cooreman | 15:cf658680c53f | 3 | #include "AMS_CCS811_fw_2_0_0.h" |
Steven Cooreman | 15:cf658680c53f | 4 | #include "mbed_trace.h" |
Steven Cooreman | 15:cf658680c53f | 5 | |
Steven Cooreman | 15:cf658680c53f | 6 | #define TRACE_GROUP "CCS" |
UHSLMarcus | 0:5edbf3550350 | 7 | |
UHSLMarcus | 13:a74306788df7 | 8 | AMS_CCS811::AMS_CCS811(I2C * i2c, PinName n_wake_pin) : _n_wake_out(), _addr_out(), _int_data(), _ens210(), _i2c() { |
UHSLMarcus | 5:41e97348e9e7 | 9 | _n_wake_out = new (std::nothrow) DigitalOut(n_wake_pin, 1); |
Steven Cooreman | 15:cf658680c53f | 10 | _i2c = i2c; |
UHSLMarcus | 0:5edbf3550350 | 11 | } |
Steven Cooreman | 15:cf658680c53f | 12 | |
UHSLMarcus | 13:a74306788df7 | 13 | AMS_CCS811::AMS_CCS811(I2C * i2c, PinName n_wake_pin, I2C * ens210_i2c) : _n_wake_out(), _addr_out(), _int_data(), _ens210(), _i2c() { |
UHSLMarcus | 5:41e97348e9e7 | 14 | _n_wake_out = new (std::nothrow) DigitalOut(n_wake_pin, 1); |
UHSLMarcus | 0:5edbf3550350 | 15 | _i2c = i2c; |
UHSLMarcus | 7:5c95614a61ee | 16 | ens210_i2c_interface(ens210_i2c); |
UHSLMarcus | 0:5edbf3550350 | 17 | } |
Steven Cooreman | 15:cf658680c53f | 18 | |
UHSLMarcus | 1:acfca1d3256d | 19 | AMS_CCS811::~AMS_CCS811() { |
UHSLMarcus | 1:acfca1d3256d | 20 | delete _n_wake_out; |
UHSLMarcus | 1:acfca1d3256d | 21 | delete _addr_out; |
UHSLMarcus | 1:acfca1d3256d | 22 | delete _int_data; |
UHSLMarcus | 7:5c95614a61ee | 23 | delete _ens210; |
UHSLMarcus | 1:acfca1d3256d | 24 | } |
UHSLMarcus | 1:acfca1d3256d | 25 | |
UHSLMarcus | 1:acfca1d3256d | 26 | bool AMS_CCS811::init() { |
Steven Cooreman | 15:cf658680c53f | 27 | |
UHSLMarcus | 5:41e97348e9e7 | 28 | bool success = false; |
Steven Cooreman | 15:cf658680c53f | 29 | |
UHSLMarcus | 5:41e97348e9e7 | 30 | _init_errors(); |
UHSLMarcus | 7:5c95614a61ee | 31 | _init_fractions(); |
UHSLMarcus | 5:41e97348e9e7 | 32 | set_defaults(); |
Steven Cooreman | 15:cf658680c53f | 33 | |
UHSLMarcus | 8:58a36d9218be | 34 | temp_reading = 0; |
UHSLMarcus | 8:58a36d9218be | 35 | humid_reading = 0; |
Steven Cooreman | 15:cf658680c53f | 36 | |
UHSLMarcus | 5:41e97348e9e7 | 37 | if (_n_wake_out) { |
Steven Cooreman | 15:cf658680c53f | 38 | char buffer[2]; |
Steven Cooreman | 15:cf658680c53f | 39 | |
Steven Cooreman | 15:cf658680c53f | 40 | if(i2c_read(HW_ID, buffer, 1) == 1) { |
Steven Cooreman | 15:cf658680c53f | 41 | if(buffer[0] != 0x81) { |
Steven Cooreman | 15:cf658680c53f | 42 | // not a CCS811 |
Steven Cooreman | 15:cf658680c53f | 43 | tr_err("Not a CCS: %02x", buffer[0]); |
Steven Cooreman | 15:cf658680c53f | 44 | return false; |
Steven Cooreman | 15:cf658680c53f | 45 | } |
Steven Cooreman | 15:cf658680c53f | 46 | } else { |
Steven Cooreman | 15:cf658680c53f | 47 | return false; |
Steven Cooreman | 15:cf658680c53f | 48 | } |
Steven Cooreman | 15:cf658680c53f | 49 | |
Steven Cooreman | 15:cf658680c53f | 50 | if(i2c_read(STATUS, buffer, 1) == 1) { |
Steven Cooreman | 15:cf658680c53f | 51 | if((buffer[0] & 0x10) == 0) { |
Steven Cooreman | 15:cf658680c53f | 52 | // does not have valid FW |
Steven Cooreman | 15:cf658680c53f | 53 | flash_firmware(); |
Steven Cooreman | 15:cf658680c53f | 54 | } |
Steven Cooreman | 15:cf658680c53f | 55 | } else { |
Steven Cooreman | 15:cf658680c53f | 56 | return false; |
Steven Cooreman | 15:cf658680c53f | 57 | } |
Steven Cooreman | 15:cf658680c53f | 58 | |
Steven Cooreman | 15:cf658680c53f | 59 | if(i2c_read(FW_APP_VERSION, buffer, 2) == 2) { |
Steven Cooreman | 15:cf658680c53f | 60 | tr_warn("CCS version %02x %02x", buffer[0], buffer[1]); |
Steven Cooreman | 15:cf658680c53f | 61 | if (buffer[0] < CCS_FW_UPGRADE_VERSION) { |
Steven Cooreman | 15:cf658680c53f | 62 | tr_warn("Flashing Firmware"); |
Steven Cooreman | 15:cf658680c53f | 63 | flash_firmware(); |
Steven Cooreman | 15:cf658680c53f | 64 | } |
Steven Cooreman | 15:cf658680c53f | 65 | } else { |
Steven Cooreman | 15:cf658680c53f | 66 | return false; |
Steven Cooreman | 15:cf658680c53f | 67 | } |
Steven Cooreman | 15:cf658680c53f | 68 | |
UHSLMarcus | 5:41e97348e9e7 | 69 | int fw_mode = firmware_mode(); |
Steven Cooreman | 15:cf658680c53f | 70 | |
Steven Cooreman | 15:cf658680c53f | 71 | if (fw_mode == 1) { |
UHSLMarcus | 13:a74306788df7 | 72 | success = write_config(); |
UHSLMarcus | 5:41e97348e9e7 | 73 | enable_ens210(true); |
Steven Cooreman | 15:cf658680c53f | 74 | |
UHSLMarcus | 5:41e97348e9e7 | 75 | } else if (fw_mode == 0) { // is in boot mode, needs to be loaded into app mode |
UHSLMarcus | 5:41e97348e9e7 | 76 | if (boot_app_start()) // if succesfully writes to app_start, retry init |
UHSLMarcus | 13:a74306788df7 | 77 | success = init(); |
UHSLMarcus | 5:41e97348e9e7 | 78 | } |
UHSLMarcus | 5:41e97348e9e7 | 79 | } |
UHSLMarcus | 13:a74306788df7 | 80 | |
UHSLMarcus | 5:41e97348e9e7 | 81 | return success; |
UHSLMarcus | 4:a6b8881eae87 | 82 | } |
UHSLMarcus | 4:a6b8881eae87 | 83 | |
Steven Cooreman | 15:cf658680c53f | 84 | bool AMS_CCS811::flash_firmware() { |
Steven Cooreman | 15:cf658680c53f | 85 | // kick into bootloader mode |
Steven Cooreman | 15:cf658680c53f | 86 | int fw_mode = firmware_mode(); |
Steven Cooreman | 15:cf658680c53f | 87 | if (fw_mode == 1) { |
Steven Cooreman | 15:cf658680c53f | 88 | const char reset_sequence[] = {0x11, 0xE5, 0x72, 0x8A}; |
Steven Cooreman | 15:cf658680c53f | 89 | if(i2c_write(0xFF, (char*)reset_sequence, 4) == 4) { |
Steven Cooreman | 15:cf658680c53f | 90 | fw_mode = firmware_mode(); |
Steven Cooreman | 15:cf658680c53f | 91 | if(fw_mode == 1) { |
Steven Cooreman | 15:cf658680c53f | 92 | tr_err("Couldn't exit app mode"); |
Steven Cooreman | 15:cf658680c53f | 93 | return false; |
Steven Cooreman | 15:cf658680c53f | 94 | } |
Steven Cooreman | 15:cf658680c53f | 95 | } else { |
Steven Cooreman | 15:cf658680c53f | 96 | tr_err("Couldn't issue reset command"); |
Steven Cooreman | 15:cf658680c53f | 97 | return false; |
Steven Cooreman | 15:cf658680c53f | 98 | } |
Steven Cooreman | 15:cf658680c53f | 99 | } |
Steven Cooreman | 15:cf658680c53f | 100 | |
Steven Cooreman | 15:cf658680c53f | 101 | // assert nwake |
Steven Cooreman | 15:cf658680c53f | 102 | if (_n_wake_out != NULL) { |
Steven Cooreman | 15:cf658680c53f | 103 | int write_count; |
Steven Cooreman | 15:cf658680c53f | 104 | |
Steven Cooreman | 15:cf658680c53f | 105 | _n_wake_out->write(0); |
Steven Cooreman | 15:cf658680c53f | 106 | wait_ms(100); |
Steven Cooreman | 15:cf658680c53f | 107 | |
Steven Cooreman | 15:cf658680c53f | 108 | // erase current FW |
Steven Cooreman | 15:cf658680c53f | 109 | static const char erase_sequence[4] = {0xE7, 0xA7, 0xE6, 0x09}; |
Steven Cooreman | 15:cf658680c53f | 110 | write_count = 0; |
Steven Cooreman | 15:cf658680c53f | 111 | _i2c->start(); |
Steven Cooreman | 15:cf658680c53f | 112 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { |
Steven Cooreman | 15:cf658680c53f | 113 | if(_i2c->write(FW_ERASE) == 1) { |
Steven Cooreman | 15:cf658680c53f | 114 | for (size_t i = 0; i < 4; i++) { |
Steven Cooreman | 15:cf658680c53f | 115 | if(_i2c->write(erase_sequence[i]) == 1) write_count++; |
Steven Cooreman | 15:cf658680c53f | 116 | else new_error(CCS811_LIB_I2CWRITE_ID); |
Steven Cooreman | 15:cf658680c53f | 117 | } |
Steven Cooreman | 15:cf658680c53f | 118 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
Steven Cooreman | 15:cf658680c53f | 119 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 120 | _i2c->stop(); |
Steven Cooreman | 15:cf658680c53f | 121 | |
Steven Cooreman | 15:cf658680c53f | 122 | if (write_count != 4) { |
Steven Cooreman | 15:cf658680c53f | 123 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 124 | return false; |
Steven Cooreman | 15:cf658680c53f | 125 | } |
Steven Cooreman | 15:cf658680c53f | 126 | tr_info("CCS FW erased"); |
Steven Cooreman | 15:cf658680c53f | 127 | wait_ms(500); |
Steven Cooreman | 15:cf658680c53f | 128 | |
Steven Cooreman | 15:cf658680c53f | 129 | // upload new FW |
Steven Cooreman | 15:cf658680c53f | 130 | tr_info("uploading new FW"); |
Steven Cooreman | 15:cf658680c53f | 131 | char payload[8]; |
Steven Cooreman | 15:cf658680c53f | 132 | for(size_t offset = 0; offset < 5120; offset += 8) { |
Steven Cooreman | 15:cf658680c53f | 133 | for(size_t j = 0; j < 8; j++) { |
Steven Cooreman | 15:cf658680c53f | 134 | payload[j] = ams_fw_image[offset + j]; |
Steven Cooreman | 15:cf658680c53f | 135 | } |
Steven Cooreman | 15:cf658680c53f | 136 | |
Steven Cooreman | 15:cf658680c53f | 137 | write_count = 0; |
Steven Cooreman | 15:cf658680c53f | 138 | _i2c->start(); |
Steven Cooreman | 15:cf658680c53f | 139 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { |
Steven Cooreman | 15:cf658680c53f | 140 | if(_i2c->write(FW_FLASH) == 1) { |
Steven Cooreman | 15:cf658680c53f | 141 | for (size_t j = 0; j < 8; j++) { |
Steven Cooreman | 15:cf658680c53f | 142 | if(_i2c->write(payload[j]) == 1) write_count++; |
Steven Cooreman | 15:cf658680c53f | 143 | else new_error(CCS811_LIB_I2CWRITE_ID); |
Steven Cooreman | 15:cf658680c53f | 144 | } |
Steven Cooreman | 15:cf658680c53f | 145 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
Steven Cooreman | 15:cf658680c53f | 146 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 147 | _i2c->stop(); |
Steven Cooreman | 15:cf658680c53f | 148 | |
Steven Cooreman | 15:cf658680c53f | 149 | wait_ms(50); |
Steven Cooreman | 15:cf658680c53f | 150 | |
Steven Cooreman | 15:cf658680c53f | 151 | if (write_count != 8) { |
Steven Cooreman | 15:cf658680c53f | 152 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 153 | tr_err("flash error"); |
Steven Cooreman | 15:cf658680c53f | 154 | return false; |
Steven Cooreman | 15:cf658680c53f | 155 | } |
Steven Cooreman | 15:cf658680c53f | 156 | |
Steven Cooreman | 15:cf658680c53f | 157 | tr_debug("Flashed byte %d of 5120", offset); |
Steven Cooreman | 15:cf658680c53f | 158 | } |
Steven Cooreman | 15:cf658680c53f | 159 | tr_info("CCS FW uploaded"); |
Steven Cooreman | 15:cf658680c53f | 160 | |
Steven Cooreman | 15:cf658680c53f | 161 | // verify new FW |
Steven Cooreman | 15:cf658680c53f | 162 | write_count = 0; |
Steven Cooreman | 15:cf658680c53f | 163 | _i2c->start(); |
Steven Cooreman | 15:cf658680c53f | 164 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { |
Steven Cooreman | 15:cf658680c53f | 165 | if(_i2c->write(FW_VERIFY) == 1) { |
Steven Cooreman | 15:cf658680c53f | 166 | write_count = 1; |
Steven Cooreman | 15:cf658680c53f | 167 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
Steven Cooreman | 15:cf658680c53f | 168 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 169 | _i2c->stop(); |
Steven Cooreman | 15:cf658680c53f | 170 | |
Steven Cooreman | 15:cf658680c53f | 171 | wait_ms(500); |
Steven Cooreman | 15:cf658680c53f | 172 | |
Steven Cooreman | 15:cf658680c53f | 173 | if (write_count != 1) { |
Steven Cooreman | 15:cf658680c53f | 174 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 175 | tr_err("Failed to issue verify"); |
Steven Cooreman | 15:cf658680c53f | 176 | return false; |
Steven Cooreman | 15:cf658680c53f | 177 | } |
Steven Cooreman | 15:cf658680c53f | 178 | |
Steven Cooreman | 15:cf658680c53f | 179 | char status = 0; |
Steven Cooreman | 15:cf658680c53f | 180 | _i2c->start(); |
Steven Cooreman | 15:cf658680c53f | 181 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { |
Steven Cooreman | 15:cf658680c53f | 182 | if(_i2c->write(STATUS) == 1) { |
Steven Cooreman | 15:cf658680c53f | 183 | _i2c->start(); |
Steven Cooreman | 15:cf658680c53f | 184 | if(_i2c->write(CCS811_SLAVE_ADDR_R) == 1) { |
Steven Cooreman | 15:cf658680c53f | 185 | status = _i2c->read(0); |
Steven Cooreman | 15:cf658680c53f | 186 | } else new_error(CCS811_LIB_SLAVE_R_ID); |
Steven Cooreman | 15:cf658680c53f | 187 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
Steven Cooreman | 15:cf658680c53f | 188 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 189 | _i2c->stop(); |
Steven Cooreman | 15:cf658680c53f | 190 | |
Steven Cooreman | 15:cf658680c53f | 191 | if (status == 0) { |
Steven Cooreman | 15:cf658680c53f | 192 | tr_err("Failed update"); |
Steven Cooreman | 15:cf658680c53f | 193 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 194 | return false; |
Steven Cooreman | 15:cf658680c53f | 195 | } |
Steven Cooreman | 15:cf658680c53f | 196 | |
Steven Cooreman | 15:cf658680c53f | 197 | if ((status & 0x30) != 0x30) { |
Steven Cooreman | 15:cf658680c53f | 198 | tr_err("Failed verify"); |
Steven Cooreman | 15:cf658680c53f | 199 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 200 | return false; |
Steven Cooreman | 15:cf658680c53f | 201 | } |
Steven Cooreman | 15:cf658680c53f | 202 | |
Steven Cooreman | 15:cf658680c53f | 203 | // boot into new FW |
Steven Cooreman | 15:cf658680c53f | 204 | tr_info("upgraded"); |
Steven Cooreman | 15:cf658680c53f | 205 | _n_wake_out->write(1); |
Steven Cooreman | 15:cf658680c53f | 206 | wait_ms(50); |
Steven Cooreman | 15:cf658680c53f | 207 | return boot_app_start(); |
Steven Cooreman | 15:cf658680c53f | 208 | } else { |
Steven Cooreman | 15:cf658680c53f | 209 | tr_err("No nWAKE available"); |
Steven Cooreman | 15:cf658680c53f | 210 | return false; |
Steven Cooreman | 15:cf658680c53f | 211 | } |
Steven Cooreman | 15:cf658680c53f | 212 | } |
Steven Cooreman | 15:cf658680c53f | 213 | |
UHSLMarcus | 4:a6b8881eae87 | 214 | void AMS_CCS811::i2c_interface(I2C * i2c) { |
UHSLMarcus | 4:a6b8881eae87 | 215 | _i2c = i2c; |
UHSLMarcus | 4:a6b8881eae87 | 216 | } |
Steven Cooreman | 15:cf658680c53f | 217 | |
UHSLMarcus | 7:5c95614a61ee | 218 | bool AMS_CCS811::ens210_i2c_interface(I2C * i2c) { |
UHSLMarcus | 11:ef2d4258cd15 | 219 | |
UHSLMarcus | 7:5c95614a61ee | 220 | bool success; |
Steven Cooreman | 15:cf658680c53f | 221 | |
UHSLMarcus | 7:5c95614a61ee | 222 | if (_ens210 == NULL) { |
UHSLMarcus | 7:5c95614a61ee | 223 | _ens210 = new (std::nothrow) AMS_ENS210(i2c, true, true); |
UHSLMarcus | 7:5c95614a61ee | 224 | if (_ens210 != NULL) { |
UHSLMarcus | 7:5c95614a61ee | 225 | if (_ens210->init()) { |
UHSLMarcus | 7:5c95614a61ee | 226 | success = _ens210->start(); |
UHSLMarcus | 7:5c95614a61ee | 227 | } |
Steven Cooreman | 15:cf658680c53f | 228 | } |
UHSLMarcus | 7:5c95614a61ee | 229 | } else { |
UHSLMarcus | 7:5c95614a61ee | 230 | _ens210->i2c_interface(i2c); |
UHSLMarcus | 7:5c95614a61ee | 231 | success = true; |
UHSLMarcus | 7:5c95614a61ee | 232 | } |
Steven Cooreman | 15:cf658680c53f | 233 | |
UHSLMarcus | 7:5c95614a61ee | 234 | if (!success) new_error(CCS811_LIB_ENS210_INIT_ID); |
Steven Cooreman | 15:cf658680c53f | 235 | |
UHSLMarcus | 7:5c95614a61ee | 236 | return success; |
UHSLMarcus | 4:a6b8881eae87 | 237 | } |
UHSLMarcus | 4:a6b8881eae87 | 238 | |
UHSLMarcus | 4:a6b8881eae87 | 239 | bool AMS_CCS811::enable_ens210(bool enable) { |
Steven Cooreman | 15:cf658680c53f | 240 | |
UHSLMarcus | 4:a6b8881eae87 | 241 | _ens210_enabled = false; |
UHSLMarcus | 7:5c95614a61ee | 242 | if (_ens210 != NULL) { |
UHSLMarcus | 7:5c95614a61ee | 243 | if (_ens210->i2c_interface() != NULL) _ens210_enabled = enable; |
UHSLMarcus | 7:5c95614a61ee | 244 | } |
UHSLMarcus | 4:a6b8881eae87 | 245 | update_ens210_timer(); |
UHSLMarcus | 4:a6b8881eae87 | 246 | return _ens210_enabled; |
UHSLMarcus | 4:a6b8881eae87 | 247 | } |
UHSLMarcus | 4:a6b8881eae87 | 248 | |
UHSLMarcus | 4:a6b8881eae87 | 249 | bool AMS_CCS811::ens210_is_enabled() { |
UHSLMarcus | 7:5c95614a61ee | 250 | enable_ens210(_ens210_enabled); // Make sure the state is representive |
UHSLMarcus | 4:a6b8881eae87 | 251 | return _ens210_enabled; |
UHSLMarcus | 4:a6b8881eae87 | 252 | } |
Steven Cooreman | 15:cf658680c53f | 253 | |
UHSLMarcus | 4:a6b8881eae87 | 254 | void AMS_CCS811::ens210_poll_interval(int poll_ms) { |
UHSLMarcus | 4:a6b8881eae87 | 255 | _ens210_poll_split = poll_ms; |
UHSLMarcus | 7:5c95614a61ee | 256 | enable_ens210(_ens210_enabled); // makes sure the state is representive, and will also update the timer |
UHSLMarcus | 4:a6b8881eae87 | 257 | } |
UHSLMarcus | 4:a6b8881eae87 | 258 | |
UHSLMarcus | 4:a6b8881eae87 | 259 | int AMS_CCS811::ens210_poll_interval() { |
UHSLMarcus | 4:a6b8881eae87 | 260 | return _ens210_poll_split; |
UHSLMarcus | 1:acfca1d3256d | 261 | } |
UHSLMarcus | 1:acfca1d3256d | 262 | |
UHSLMarcus | 5:41e97348e9e7 | 263 | int AMS_CCS811::firmware_mode() { |
UHSLMarcus | 5:41e97348e9e7 | 264 | int firmware_result = -1; |
Steven Cooreman | 15:cf658680c53f | 265 | |
UHSLMarcus | 6:22c0a7f2ece2 | 266 | clear_errors(); |
Steven Cooreman | 15:cf658680c53f | 267 | |
UHSLMarcus | 5:41e97348e9e7 | 268 | read_byte_result read_result = read_status(); |
UHSLMarcus | 5:41e97348e9e7 | 269 | if (read_result.success) { |
UHSLMarcus | 5:41e97348e9e7 | 270 | firmware_result = (read_result.byte >> 7) & 1; |
UHSLMarcus | 6:22c0a7f2ece2 | 271 | } |
Steven Cooreman | 15:cf658680c53f | 272 | |
UHSLMarcus | 5:41e97348e9e7 | 273 | return firmware_result; |
UHSLMarcus | 5:41e97348e9e7 | 274 | } |
UHSLMarcus | 5:41e97348e9e7 | 275 | |
UHSLMarcus | 1:acfca1d3256d | 276 | bool AMS_CCS811::mode(OP_MODES mode) { |
UHSLMarcus | 6:22c0a7f2ece2 | 277 | clear_errors(); |
Steven Cooreman | 15:cf658680c53f | 278 | |
UHSLMarcus | 1:acfca1d3256d | 279 | OP_MODES old = _mode; // incase the write fails, to roll back |
UHSLMarcus | 1:acfca1d3256d | 280 | _mode = mode; |
Steven Cooreman | 15:cf658680c53f | 281 | |
UHSLMarcus | 1:acfca1d3256d | 282 | bool success = write_config(); |
UHSLMarcus | 1:acfca1d3256d | 283 | if (!success) |
UHSLMarcus | 1:acfca1d3256d | 284 | _mode = old; |
Steven Cooreman | 15:cf658680c53f | 285 | |
UHSLMarcus | 1:acfca1d3256d | 286 | return success; |
UHSLMarcus | 1:acfca1d3256d | 287 | } |
UHSLMarcus | 1:acfca1d3256d | 288 | |
UHSLMarcus | 1:acfca1d3256d | 289 | AMS_CCS811::OP_MODES AMS_CCS811::mode() { |
UHSLMarcus | 6:22c0a7f2ece2 | 290 | clear_errors(); |
Steven Cooreman | 15:cf658680c53f | 291 | |
UHSLMarcus | 5:41e97348e9e7 | 292 | OP_MODES result = INVALID; |
Steven Cooreman | 15:cf658680c53f | 293 | |
UHSLMarcus | 5:41e97348e9e7 | 294 | read_byte_result read_result = read_config(); |
UHSLMarcus | 1:acfca1d3256d | 295 | if (read_result.success) { |
UHSLMarcus | 1:acfca1d3256d | 296 | int mode = (read_result.byte >> 4) & 0b111; |
UHSLMarcus | 2:e394671ef5f6 | 297 | result = mode > 4 ? INVALID : (OP_MODES)mode; |
UHSLMarcus | 6:22c0a7f2ece2 | 298 | } |
Steven Cooreman | 15:cf658680c53f | 299 | |
UHSLMarcus | 2:e394671ef5f6 | 300 | return result; |
UHSLMarcus | 1:acfca1d3256d | 301 | } |
UHSLMarcus | 1:acfca1d3256d | 302 | |
Steven Cooreman | 15:cf658680c53f | 303 | bool AMS_CCS811::addr_mode(bool high) { |
UHSLMarcus | 1:acfca1d3256d | 304 | _addr_dir = high; |
UHSLMarcus | 5:41e97348e9e7 | 305 | if (_addr_out != NULL) _addr_out->write(_addr_dir); |
Steven Cooreman | 15:cf658680c53f | 306 | |
UHSLMarcus | 2:e394671ef5f6 | 307 | update_slave_addr(); |
Steven Cooreman | 15:cf658680c53f | 308 | |
UHSLMarcus | 1:acfca1d3256d | 309 | return addr_mode() == high; |
UHSLMarcus | 1:acfca1d3256d | 310 | } |
UHSLMarcus | 1:acfca1d3256d | 311 | |
UHSLMarcus | 1:acfca1d3256d | 312 | bool AMS_CCS811::addr_mode() { |
UHSLMarcus | 13:a74306788df7 | 313 | _addr_dir = false; |
UHSLMarcus | 1:acfca1d3256d | 314 | if (_addr_out != NULL) { |
Steven Cooreman | 15:cf658680c53f | 315 | _addr_dir = _addr_out->read(); |
UHSLMarcus | 1:acfca1d3256d | 316 | } |
Steven Cooreman | 15:cf658680c53f | 317 | |
UHSLMarcus | 1:acfca1d3256d | 318 | return _addr_dir; |
UHSLMarcus | 1:acfca1d3256d | 319 | } |
UHSLMarcus | 1:acfca1d3256d | 320 | |
UHSLMarcus | 1:acfca1d3256d | 321 | bool AMS_CCS811::addr_pin(PinName pin) { |
UHSLMarcus | 1:acfca1d3256d | 322 | _addr_out = _addr_out == NULL ? new (std::nothrow) DigitalOut(pin) : new (_addr_out) DigitalOut(pin); |
UHSLMarcus | 1:acfca1d3256d | 323 | addr_mode(_addr_dir); |
Steven Cooreman | 15:cf658680c53f | 324 | |
UHSLMarcus | 1:acfca1d3256d | 325 | return _addr_out != NULL; |
UHSLMarcus | 1:acfca1d3256d | 326 | } |
UHSLMarcus | 1:acfca1d3256d | 327 | |
UHSLMarcus | 1:acfca1d3256d | 328 | bool AMS_CCS811::n_wake_pin(PinName pin) { |
UHSLMarcus | 1:acfca1d3256d | 329 | _n_wake_out = _n_wake_out == NULL ? new (std::nothrow) DigitalOut(pin) : new (_n_wake_out) DigitalOut(pin); |
UHSLMarcus | 1:acfca1d3256d | 330 | return _n_wake_out != NULL; |
UHSLMarcus | 1:acfca1d3256d | 331 | } |
UHSLMarcus | 1:acfca1d3256d | 332 | |
UHSLMarcus | 2:e394671ef5f6 | 333 | bool AMS_CCS811::env_data(float humid, float temp) { |
UHSLMarcus | 7:5c95614a61ee | 334 | char bytes[4]; |
UHSLMarcus | 7:5c95614a61ee | 335 | if (humid > CCS811_MAX_HUMID) humid = CCS811_MAX_HUMID; |
UHSLMarcus | 7:5c95614a61ee | 336 | if (humid < 0) humid = 0; |
Steven Cooreman | 15:cf658680c53f | 337 | |
UHSLMarcus | 7:5c95614a61ee | 338 | temp += 25; |
UHSLMarcus | 7:5c95614a61ee | 339 | if (temp > CCS811_MAX_TEMP) humid = CCS811_MAX_TEMP; |
UHSLMarcus | 7:5c95614a61ee | 340 | if (temp < 0) temp = 0; |
Steven Cooreman | 15:cf658680c53f | 341 | |
UHSLMarcus | 7:5c95614a61ee | 342 | float_to_short(humid, bytes); |
UHSLMarcus | 7:5c95614a61ee | 343 | float_to_short(temp, bytes+2); |
Steven Cooreman | 15:cf658680c53f | 344 | |
UHSLMarcus | 7:5c95614a61ee | 345 | return i2c_write(ENV_DATA, bytes, 4) == 4; |
UHSLMarcus | 1:acfca1d3256d | 346 | } |
UHSLMarcus | 1:acfca1d3256d | 347 | |
UHSLMarcus | 1:acfca1d3256d | 348 | |
UHSLMarcus | 5:41e97348e9e7 | 349 | int AMS_CCS811::has_new_data() { |
UHSLMarcus | 6:22c0a7f2ece2 | 350 | |
UHSLMarcus | 6:22c0a7f2ece2 | 351 | clear_errors(); |
Steven Cooreman | 15:cf658680c53f | 352 | |
UHSLMarcus | 5:41e97348e9e7 | 353 | int result = -1; |
Steven Cooreman | 15:cf658680c53f | 354 | |
UHSLMarcus | 6:22c0a7f2ece2 | 355 | char meas_mode[1]; |
UHSLMarcus | 6:22c0a7f2ece2 | 356 | if(i2c_read(MEAS_MODE, meas_mode, 1) == 1) { // one read here is quicker than calling read_config() twice |
Steven Cooreman | 15:cf658680c53f | 357 | |
UHSLMarcus | 6:22c0a7f2ece2 | 358 | int curr_mode = (meas_mode[0] >> 4) & 0b111; |
UHSLMarcus | 6:22c0a7f2ece2 | 359 | if (curr_mode < 5) { |
UHSLMarcus | 6:22c0a7f2ece2 | 360 | if (curr_mode > 0) { // check for all valid modes other than idle |
UHSLMarcus | 6:22c0a7f2ece2 | 361 | if (((meas_mode[0] >> 3) & 1) == 0) { // check if interrupts are disabled |
Steven Cooreman | 15:cf658680c53f | 362 | char status[1]; |
UHSLMarcus | 6:22c0a7f2ece2 | 363 | if (i2c_read(STATUS, status, 1) == 1) // for some reason the status register in ALG_RESULT_DATA is not updated after reading data, however the STATUS register is |
UHSLMarcus | 6:22c0a7f2ece2 | 364 | result = (status[0] >> 3) & 1; |
Steven Cooreman | 15:cf658680c53f | 365 | |
UHSLMarcus | 6:22c0a7f2ece2 | 366 | } else result = 1; |
Steven Cooreman | 15:cf658680c53f | 367 | |
Steven Cooreman | 15:cf658680c53f | 368 | if (result == 1) |
UHSLMarcus | 6:22c0a7f2ece2 | 369 | if (i2c_read(ALG_RESULT_DATA, _alg_result_data, 8) != 8) result = -1; |
Steven Cooreman | 15:cf658680c53f | 370 | |
Steven Cooreman | 15:cf658680c53f | 371 | |
UHSLMarcus | 6:22c0a7f2ece2 | 372 | } else result = 0; // return 0 when in idle |
UHSLMarcus | 6:22c0a7f2ece2 | 373 | } else new_error(CCS811_LIB_INV_MODE_ID); |
UHSLMarcus | 5:41e97348e9e7 | 374 | } |
Steven Cooreman | 15:cf658680c53f | 375 | |
UHSLMarcus | 5:41e97348e9e7 | 376 | return result; |
UHSLMarcus | 1:acfca1d3256d | 377 | } |
UHSLMarcus | 1:acfca1d3256d | 378 | |
UHSLMarcus | 1:acfca1d3256d | 379 | uint16_t AMS_CCS811::co2_read() { |
UHSLMarcus | 6:22c0a7f2ece2 | 380 | return 0 | (_alg_result_data[0] << 8) | _alg_result_data[1]; |
UHSLMarcus | 2:e394671ef5f6 | 381 | } |
UHSLMarcus | 1:acfca1d3256d | 382 | |
UHSLMarcus | 1:acfca1d3256d | 383 | uint16_t AMS_CCS811::tvoc_read() { |
UHSLMarcus | 6:22c0a7f2ece2 | 384 | return 0 | (_alg_result_data[2] << 8) | _alg_result_data[3]; |
UHSLMarcus | 1:acfca1d3256d | 385 | } |
UHSLMarcus | 1:acfca1d3256d | 386 | |
UHSLMarcus | 1:acfca1d3256d | 387 | uint16_t AMS_CCS811::raw_read() { |
UHSLMarcus | 6:22c0a7f2ece2 | 388 | return 0 | (_alg_result_data[6] << 8) | _alg_result_data[7]; |
UHSLMarcus | 1:acfca1d3256d | 389 | } |
UHSLMarcus | 1:acfca1d3256d | 390 | |
UHSLMarcus | 8:58a36d9218be | 391 | float AMS_CCS811::temp_read() { |
UHSLMarcus | 8:58a36d9218be | 392 | return temp_reading; |
UHSLMarcus | 8:58a36d9218be | 393 | } |
UHSLMarcus | 8:58a36d9218be | 394 | |
UHSLMarcus | 8:58a36d9218be | 395 | float AMS_CCS811::humid_read() { |
UHSLMarcus | 8:58a36d9218be | 396 | return humid_reading; |
UHSLMarcus | 8:58a36d9218be | 397 | } |
UHSLMarcus | 8:58a36d9218be | 398 | |
UHSLMarcus | 5:41e97348e9e7 | 399 | bool AMS_CCS811::error_status() { |
UHSLMarcus | 5:41e97348e9e7 | 400 | bool result = false; |
Steven Cooreman | 15:cf658680c53f | 401 | |
UHSLMarcus | 5:41e97348e9e7 | 402 | read_byte_result read_result = read_status(); |
UHSLMarcus | 5:41e97348e9e7 | 403 | if (read_result.success) { |
UHSLMarcus | 5:41e97348e9e7 | 404 | result = read_result.byte & 1; |
UHSLMarcus | 5:41e97348e9e7 | 405 | } |
Steven Cooreman | 15:cf658680c53f | 406 | |
UHSLMarcus | 5:41e97348e9e7 | 407 | result = result || (_error_count > 0); |
Steven Cooreman | 15:cf658680c53f | 408 | |
UHSLMarcus | 5:41e97348e9e7 | 409 | return result; |
UHSLMarcus | 5:41e97348e9e7 | 410 | } |
Steven Cooreman | 15:cf658680c53f | 411 | |
UHSLMarcus | 5:41e97348e9e7 | 412 | AMS_CCS811::ccs811_errors AMS_CCS811::errors() { |
UHSLMarcus | 5:41e97348e9e7 | 413 | ccs811_errors error_result; |
Steven Cooreman | 15:cf658680c53f | 414 | |
UHSLMarcus | 5:41e97348e9e7 | 415 | char byte[1]; |
UHSLMarcus | 5:41e97348e9e7 | 416 | if (i2c_read(ERROR_ID, byte, 1) == 1) { |
UHSLMarcus | 5:41e97348e9e7 | 417 | for(int i = 0; i < CCS811_ERR_NUM; i++) { |
UHSLMarcus | 5:41e97348e9e7 | 418 | if ((byte[0] << i) & 1) { |
UHSLMarcus | 5:41e97348e9e7 | 419 | error_result.codes[error_result.count++] = i; |
UHSLMarcus | 5:41e97348e9e7 | 420 | } |
UHSLMarcus | 5:41e97348e9e7 | 421 | } |
UHSLMarcus | 5:41e97348e9e7 | 422 | } |
UHSLMarcus | 5:41e97348e9e7 | 423 | for(int i = 0; i < CCS811_LIB_ERR_NUM; i++) { |
UHSLMarcus | 5:41e97348e9e7 | 424 | if (_errors[i]) { |
UHSLMarcus | 5:41e97348e9e7 | 425 | error_result.codes[error_result.count++] = i + CCS811_ERR_NUM; |
UHSLMarcus | 5:41e97348e9e7 | 426 | } |
UHSLMarcus | 5:41e97348e9e7 | 427 | } |
Steven Cooreman | 15:cf658680c53f | 428 | |
UHSLMarcus | 5:41e97348e9e7 | 429 | return error_result; |
Steven Cooreman | 15:cf658680c53f | 430 | |
UHSLMarcus | 5:41e97348e9e7 | 431 | } |
UHSLMarcus | 5:41e97348e9e7 | 432 | |
UHSLMarcus | 5:41e97348e9e7 | 433 | const char * AMS_CCS811::error_string(int err_code){ |
UHSLMarcus | 5:41e97348e9e7 | 434 | static char result[255]; |
UHSLMarcus | 5:41e97348e9e7 | 435 | result[0] = 0; |
Steven Cooreman | 15:cf658680c53f | 436 | if (err_code < CCS811_TOTAL_ERR_NUM && err_code > -1) |
UHSLMarcus | 5:41e97348e9e7 | 437 | strcpy(result, _error_strings[err_code]); |
Steven Cooreman | 15:cf658680c53f | 438 | else |
UHSLMarcus | 5:41e97348e9e7 | 439 | sprintf(result, "Invalid Code: %d is out of range (0 - %d)", err_code, CCS811_TOTAL_ERR_NUM-1); |
Steven Cooreman | 15:cf658680c53f | 440 | |
UHSLMarcus | 5:41e97348e9e7 | 441 | return result; |
UHSLMarcus | 1:acfca1d3256d | 442 | } |
UHSLMarcus | 1:acfca1d3256d | 443 | |
UHSLMarcus | 1:acfca1d3256d | 444 | bool AMS_CCS811::enable_interupt(bool enable) { |
UHSLMarcus | 1:acfca1d3256d | 445 | bool old = _int_data_enabled; // incase the write fails, to roll back |
UHSLMarcus | 1:acfca1d3256d | 446 | _int_data_enabled = enable; |
Steven Cooreman | 15:cf658680c53f | 447 | |
UHSLMarcus | 1:acfca1d3256d | 448 | bool success = write_config(); |
UHSLMarcus | 1:acfca1d3256d | 449 | if (!success) |
UHSLMarcus | 1:acfca1d3256d | 450 | _int_data_enabled = old; |
Steven Cooreman | 15:cf658680c53f | 451 | |
UHSLMarcus | 1:acfca1d3256d | 452 | return success; |
UHSLMarcus | 1:acfca1d3256d | 453 | |
UHSLMarcus | 1:acfca1d3256d | 454 | } |
UHSLMarcus | 1:acfca1d3256d | 455 | |
UHSLMarcus | 5:41e97348e9e7 | 456 | int AMS_CCS811::interupt_enabled() { |
UHSLMarcus | 5:41e97348e9e7 | 457 | int enabled = -1; |
Steven Cooreman | 15:cf658680c53f | 458 | |
UHSLMarcus | 5:41e97348e9e7 | 459 | read_byte_result read_result = read_config(); |
UHSLMarcus | 1:acfca1d3256d | 460 | if (read_result.success) { |
UHSLMarcus | 1:acfca1d3256d | 461 | enabled = (read_result.byte >> 3) & 1; |
UHSLMarcus | 6:22c0a7f2ece2 | 462 | } |
Steven Cooreman | 15:cf658680c53f | 463 | |
UHSLMarcus | 2:e394671ef5f6 | 464 | return enabled; |
UHSLMarcus | 1:acfca1d3256d | 465 | } |
UHSLMarcus | 1:acfca1d3256d | 466 | |
UHSLMarcus | 1:acfca1d3256d | 467 | bool AMS_CCS811::interrupt_pin(PinName pin) { |
UHSLMarcus | 1:acfca1d3256d | 468 | bool success = false; |
Steven Cooreman | 15:cf658680c53f | 469 | |
UHSLMarcus | 2:e394671ef5f6 | 470 | _int_data = _int_data == NULL ? new (std::nothrow) InterruptIn(pin) : new (_int_data) InterruptIn(pin); |
UHSLMarcus | 1:acfca1d3256d | 471 | if (_int_data != NULL) { |
UHSLMarcus | 2:e394671ef5f6 | 472 | _int_data->fall(callback(this, &AMS_CCS811::_isr_data)); |
UHSLMarcus | 1:acfca1d3256d | 473 | success = true; |
UHSLMarcus | 1:acfca1d3256d | 474 | } |
Steven Cooreman | 15:cf658680c53f | 475 | |
UHSLMarcus | 1:acfca1d3256d | 476 | return success; |
UHSLMarcus | 1:acfca1d3256d | 477 | } |
UHSLMarcus | 0:5edbf3550350 | 478 | |
UHSLMarcus | 0:5edbf3550350 | 479 | |
UHSLMarcus | 0:5edbf3550350 | 480 | |
UHSLMarcus | 1:acfca1d3256d | 481 | |
UHSLMarcus | 1:acfca1d3256d | 482 | /** Private **/ |
UHSLMarcus | 1:acfca1d3256d | 483 | |
UHSLMarcus | 5:41e97348e9e7 | 484 | void AMS_CCS811::set_defaults() { |
Steven Cooreman | 15:cf658680c53f | 485 | if (_mode == NULL) |
UHSLMarcus | 1:acfca1d3256d | 486 | _mode = CONFIG_OP_MODE; |
UHSLMarcus | 1:acfca1d3256d | 487 | if (_addr_dir == NULL) |
UHSLMarcus | 1:acfca1d3256d | 488 | _addr_dir = CONFIG_ADDR_DIR; |
UHSLMarcus | 1:acfca1d3256d | 489 | if (_int_data_enabled == NULL) |
UHSLMarcus | 1:acfca1d3256d | 490 | _int_data_enabled = CONFIG_INTR; |
UHSLMarcus | 2:e394671ef5f6 | 491 | if (_ens210_poll_split == NULL) |
UHSLMarcus | 2:e394671ef5f6 | 492 | _ens210_poll_split = CONFIG_ENS210_POLL; |
Steven Cooreman | 15:cf658680c53f | 493 | |
UHSLMarcus | 5:41e97348e9e7 | 494 | update_slave_addr(); |
UHSLMarcus | 5:41e97348e9e7 | 495 | } |
UHSLMarcus | 5:41e97348e9e7 | 496 | |
UHSLMarcus | 5:41e97348e9e7 | 497 | void AMS_CCS811::_init_errors() { |
UHSLMarcus | 5:41e97348e9e7 | 498 | clear_errors(); |
UHSLMarcus | 5:41e97348e9e7 | 499 | /* Sensor errors */ |
UHSLMarcus | 5:41e97348e9e7 | 500 | strcpy(_error_strings[0], CCS811_WRITE_REG_INVALID); |
UHSLMarcus | 5:41e97348e9e7 | 501 | strcpy(_error_strings[1], CCS811_READ_REG_INVALID); |
UHSLMarcus | 5:41e97348e9e7 | 502 | strcpy(_error_strings[2], CCS811_MEASMODE_INVALID); |
UHSLMarcus | 5:41e97348e9e7 | 503 | strcpy(_error_strings[3], CCS811_MAX_RESISTANCE); |
UHSLMarcus | 5:41e97348e9e7 | 504 | strcpy(_error_strings[4], CCS811_HEATER_FAULT); |
UHSLMarcus | 5:41e97348e9e7 | 505 | strcpy(_error_strings[5], CCS811_HEATER_SUPPLY); |
UHSLMarcus | 5:41e97348e9e7 | 506 | strcpy(_error_strings[6], CCS811_RESERVED); |
UHSLMarcus | 5:41e97348e9e7 | 507 | strcpy(_error_strings[7], CCS811_RESERVED); |
UHSLMarcus | 5:41e97348e9e7 | 508 | /* Library errors */ |
UHSLMarcus | 5:41e97348e9e7 | 509 | strcpy(_error_strings[CCS811_LIB_N_WAKE_ID+CCS811_ERR_NUM], CCS811_LIB_N_WAKE); |
UHSLMarcus | 5:41e97348e9e7 | 510 | strcpy(_error_strings[CCS811_LIB_I2C_ID+CCS811_ERR_NUM], CCS811_LIB_I2C); |
UHSLMarcus | 5:41e97348e9e7 | 511 | strcpy(_error_strings[CCS811_LIB_SLAVE_W_ID+CCS811_ERR_NUM], CCS811_LIB_SLAVE_W); |
UHSLMarcus | 5:41e97348e9e7 | 512 | strcpy(_error_strings[CCS811_LIB_REG_ADDR_ID+CCS811_ERR_NUM], CCS811_LIB_REG_ADDR); |
UHSLMarcus | 5:41e97348e9e7 | 513 | strcpy(_error_strings[CCS811_LIB_I2CWRITE_ID+CCS811_ERR_NUM], CCS811_LIB_I2CWRITE); |
UHSLMarcus | 5:41e97348e9e7 | 514 | strcpy(_error_strings[CCS811_LIB_SLAVE_R_ID+CCS811_ERR_NUM], CCS811_LIB_SLAVE_R); |
UHSLMarcus | 6:22c0a7f2ece2 | 515 | strcpy(_error_strings[CCS811_LIB_INV_MODE_ID+CCS811_ERR_NUM], CCS811_LIB_INV_MODE); |
UHSLMarcus | 7:5c95614a61ee | 516 | strcpy(_error_strings[CCS811_LIB_ENS210_INIT_ID+CCS811_ERR_NUM], CCS811_LIB_ENS210_INIT); |
UHSLMarcus | 5:41e97348e9e7 | 517 | } |
UHSLMarcus | 5:41e97348e9e7 | 518 | |
UHSLMarcus | 5:41e97348e9e7 | 519 | void AMS_CCS811::clear_errors() { |
UHSLMarcus | 5:41e97348e9e7 | 520 | _error_count = 0; |
UHSLMarcus | 5:41e97348e9e7 | 521 | for (int i = 0; i < CCS811_LIB_ERR_NUM; i++) { |
UHSLMarcus | 5:41e97348e9e7 | 522 | _errors[i] = false; |
UHSLMarcus | 5:41e97348e9e7 | 523 | } |
UHSLMarcus | 5:41e97348e9e7 | 524 | } |
UHSLMarcus | 5:41e97348e9e7 | 525 | |
UHSLMarcus | 5:41e97348e9e7 | 526 | void AMS_CCS811::new_error(int error_id) { |
UHSLMarcus | 5:41e97348e9e7 | 527 | if (!_errors[error_id]) { |
UHSLMarcus | 5:41e97348e9e7 | 528 | _errors[error_id] = true; |
UHSLMarcus | 5:41e97348e9e7 | 529 | _error_count++; |
UHSLMarcus | 5:41e97348e9e7 | 530 | } |
UHSLMarcus | 1:acfca1d3256d | 531 | } |
UHSLMarcus | 2:e394671ef5f6 | 532 | |
UHSLMarcus | 4:a6b8881eae87 | 533 | void AMS_CCS811::update_ens210_timer() { |
UHSLMarcus | 4:a6b8881eae87 | 534 | _ens210_poll_t.detach(); |
UHSLMarcus | 4:a6b8881eae87 | 535 | if (_ens210_enabled) |
UHSLMarcus | 4:a6b8881eae87 | 536 | _ens210_poll_t.attach_us(callback(this, &AMS_CCS811::ens210_isr), _ens210_poll_split*1000); |
UHSLMarcus | 4:a6b8881eae87 | 537 | } |
UHSLMarcus | 4:a6b8881eae87 | 538 | |
UHSLMarcus | 4:a6b8881eae87 | 539 | void AMS_CCS811::ens210_isr() { |
UHSLMarcus | 8:58a36d9218be | 540 | temp_reading = ((float)_ens210->temp_read() / 64) - - 273.15; |
UHSLMarcus | 8:58a36d9218be | 541 | humid_reading = (float)_ens210->humid_read()/512; |
UHSLMarcus | 8:58a36d9218be | 542 | env_data(humid_reading, temp_reading); |
UHSLMarcus | 7:5c95614a61ee | 543 | } |
UHSLMarcus | 7:5c95614a61ee | 544 | |
UHSLMarcus | 7:5c95614a61ee | 545 | void AMS_CCS811::_init_fractions() { |
Steven Cooreman | 15:cf658680c53f | 546 | |
UHSLMarcus | 7:5c95614a61ee | 547 | fractions[0] = 0.5; |
UHSLMarcus | 7:5c95614a61ee | 548 | fractions[1] = 0.25; |
UHSLMarcus | 7:5c95614a61ee | 549 | fractions[2] = 0.125; |
UHSLMarcus | 7:5c95614a61ee | 550 | fractions[3] = 0.0625; |
UHSLMarcus | 7:5c95614a61ee | 551 | fractions[4] = 0.03125; |
UHSLMarcus | 7:5c95614a61ee | 552 | fractions[5] = 0.015625; |
UHSLMarcus | 7:5c95614a61ee | 553 | fractions[6] = 0.0078125; |
UHSLMarcus | 7:5c95614a61ee | 554 | fractions[7] = 0.00390625; |
UHSLMarcus | 7:5c95614a61ee | 555 | fractions[8] = 0.001953125; |
Steven Cooreman | 15:cf658680c53f | 556 | |
UHSLMarcus | 7:5c95614a61ee | 557 | } |
UHSLMarcus | 7:5c95614a61ee | 558 | |
UHSLMarcus | 7:5c95614a61ee | 559 | void AMS_CCS811::float_to_short(float in, char * output) { |
UHSLMarcus | 7:5c95614a61ee | 560 | |
UHSLMarcus | 7:5c95614a61ee | 561 | uint8_t int_part = (uint8_t)in; |
UHSLMarcus | 7:5c95614a61ee | 562 | float dec_part = in - int_part; |
UHSLMarcus | 7:5c95614a61ee | 563 | |
UHSLMarcus | 7:5c95614a61ee | 564 | uint16_t _short = 0; |
UHSLMarcus | 7:5c95614a61ee | 565 | for (int i = 0; i < 9; i++) { |
Steven Cooreman | 15:cf658680c53f | 566 | if (dec_part == 0) break; |
UHSLMarcus | 7:5c95614a61ee | 567 | if (dec_part >= fractions[i]) { |
UHSLMarcus | 7:5c95614a61ee | 568 | dec_part -= fractions[i]; |
UHSLMarcus | 7:5c95614a61ee | 569 | _short |= 256 >> i; |
UHSLMarcus | 10:225a71ec316c | 570 | } |
UHSLMarcus | 7:5c95614a61ee | 571 | } |
Steven Cooreman | 15:cf658680c53f | 572 | |
UHSLMarcus | 7:5c95614a61ee | 573 | _short |= int_part << 9; |
Steven Cooreman | 15:cf658680c53f | 574 | |
UHSLMarcus | 7:5c95614a61ee | 575 | output[0] = _short >> 8; |
UHSLMarcus | 7:5c95614a61ee | 576 | output[1] = _short; |
UHSLMarcus | 4:a6b8881eae87 | 577 | } |
UHSLMarcus | 4:a6b8881eae87 | 578 | |
UHSLMarcus | 3:782a719f47a5 | 579 | void AMS_CCS811::update_slave_addr() { |
UHSLMarcus | 13:a74306788df7 | 580 | _slave_addr = addr_mode() ? CCS811_SLAVE_ADDR_RAW_H : CCS811_SLAVE_ADDR_RAW_L; |
UHSLMarcus | 2:e394671ef5f6 | 581 | } |
Steven Cooreman | 15:cf658680c53f | 582 | |
UHSLMarcus | 1:acfca1d3256d | 583 | void AMS_CCS811::_isr_data() { |
UHSLMarcus | 6:22c0a7f2ece2 | 584 | has_new_data(); // populate the data array |
UHSLMarcus | 3:782a719f47a5 | 585 | _isr_data_fp.call(); |
UHSLMarcus | 1:acfca1d3256d | 586 | } |
UHSLMarcus | 1:acfca1d3256d | 587 | |
UHSLMarcus | 1:acfca1d3256d | 588 | bool AMS_CCS811::write_config() { |
stevew817 | 14:0e8f5bf68b50 | 589 | char cmd[1] = {0 | (_int_data_enabled ? 1 << 3 : 0) | (_mode << 4)}; |
UHSLMarcus | 5:41e97348e9e7 | 590 | return i2c_write(MEAS_MODE, cmd, 1) == 1; |
UHSLMarcus | 5:41e97348e9e7 | 591 | } |
UHSLMarcus | 5:41e97348e9e7 | 592 | |
UHSLMarcus | 5:41e97348e9e7 | 593 | AMS_CCS811::read_byte_result AMS_CCS811::read_config() { |
UHSLMarcus | 5:41e97348e9e7 | 594 | read_byte_result result; |
UHSLMarcus | 5:41e97348e9e7 | 595 | char byte[1]; |
UHSLMarcus | 5:41e97348e9e7 | 596 | if (i2c_read(MEAS_MODE, byte, 1) == 1) { |
UHSLMarcus | 5:41e97348e9e7 | 597 | result.success = true; |
UHSLMarcus | 5:41e97348e9e7 | 598 | result.byte = byte[0]; |
UHSLMarcus | 5:41e97348e9e7 | 599 | } |
UHSLMarcus | 5:41e97348e9e7 | 600 | return result; |
UHSLMarcus | 1:acfca1d3256d | 601 | } |
UHSLMarcus | 1:acfca1d3256d | 602 | |
UHSLMarcus | 5:41e97348e9e7 | 603 | AMS_CCS811::read_byte_result AMS_CCS811::read_status() { |
UHSLMarcus | 5:41e97348e9e7 | 604 | read_byte_result result; |
UHSLMarcus | 2:e394671ef5f6 | 605 | char byte[1]; |
UHSLMarcus | 5:41e97348e9e7 | 606 | if (i2c_read(STATUS, byte, 1) == 1) { |
UHSLMarcus | 2:e394671ef5f6 | 607 | result.success = true; |
UHSLMarcus | 5:41e97348e9e7 | 608 | result.byte = byte[0]; |
UHSLMarcus | 5:41e97348e9e7 | 609 | } |
Steven Cooreman | 15:cf658680c53f | 610 | |
UHSLMarcus | 5:41e97348e9e7 | 611 | return result; |
UHSLMarcus | 5:41e97348e9e7 | 612 | } |
UHSLMarcus | 5:41e97348e9e7 | 613 | |
UHSLMarcus | 5:41e97348e9e7 | 614 | bool AMS_CCS811::boot_app_start() { |
UHSLMarcus | 5:41e97348e9e7 | 615 | bool success = false; |
Steven Cooreman | 15:cf658680c53f | 616 | |
UHSLMarcus | 5:41e97348e9e7 | 617 | if (i2c_write(APP_START, NULL, 0) == 0) { |
UHSLMarcus | 5:41e97348e9e7 | 618 | wait_ms(70); |
UHSLMarcus | 5:41e97348e9e7 | 619 | success = true; |
UHSLMarcus | 2:e394671ef5f6 | 620 | } |
Steven Cooreman | 15:cf658680c53f | 621 | |
UHSLMarcus | 5:41e97348e9e7 | 622 | return success; |
UHSLMarcus | 2:e394671ef5f6 | 623 | } |
UHSLMarcus | 2:e394671ef5f6 | 624 | |
UHSLMarcus | 2:e394671ef5f6 | 625 | int AMS_CCS811::i2c_read(char reg_addr, char* output, int len) { |
UHSLMarcus | 13:a74306788df7 | 626 | |
UHSLMarcus | 2:e394671ef5f6 | 627 | int read_count = 0; |
Steven Cooreman | 15:cf658680c53f | 628 | if (_n_wake_out != NULL) { // check nWAKE pin is set |
Steven Cooreman | 15:cf658680c53f | 629 | _n_wake_out->write(0); // Hold low |
UHSLMarcus | 5:41e97348e9e7 | 630 | wait_us(CCS811_T_AWAKE); // tAWAKE time to allow sensor I2C to wake up |
UHSLMarcus | 2:e394671ef5f6 | 631 | if (_i2c != NULL) { // check I2C interface is set |
UHSLMarcus | 2:e394671ef5f6 | 632 | _i2c->start(); // send start condition for write |
UHSLMarcus | 5:41e97348e9e7 | 633 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { // write slave address with write bit |
UHSLMarcus | 2:e394671ef5f6 | 634 | if(_i2c->write(reg_addr) == 1) { // write register address |
UHSLMarcus | 2:e394671ef5f6 | 635 | _i2c->start(); // send another start condition for read |
UHSLMarcus | 5:41e97348e9e7 | 636 | if(_i2c->write(CCS811_SLAVE_ADDR_R) == 1) { // write slave address with read bit |
UHSLMarcus | 2:e394671ef5f6 | 637 | for (int i = 0; i < len; i++) { // read len bytes |
UHSLMarcus | 2:e394671ef5f6 | 638 | output[i] = _i2c->read(i < len-1 ? 1 : 0); // ack all reads aside from the final one (i == len-1) |
UHSLMarcus | 2:e394671ef5f6 | 639 | read_count++; |
UHSLMarcus | 2:e394671ef5f6 | 640 | } |
UHSLMarcus | 5:41e97348e9e7 | 641 | } else new_error(CCS811_LIB_SLAVE_R_ID); |
UHSLMarcus | 5:41e97348e9e7 | 642 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
UHSLMarcus | 5:41e97348e9e7 | 643 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 644 | _i2c->stop(); // send stop condition |
UHSLMarcus | 5:41e97348e9e7 | 645 | } else new_error(CCS811_LIB_I2C_ID); |
UHSLMarcus | 5:41e97348e9e7 | 646 | _n_wake_out->write(1); // Set back to high |
UHSLMarcus | 5:41e97348e9e7 | 647 | wait_us(CCS811_T_DWAKE); // tDWAKE time to allow sensor I2C to sleep |
UHSLMarcus | 5:41e97348e9e7 | 648 | } else new_error(CCS811_LIB_N_WAKE_ID); |
Steven Cooreman | 15:cf658680c53f | 649 | |
UHSLMarcus | 2:e394671ef5f6 | 650 | return read_count; |
UHSLMarcus | 2:e394671ef5f6 | 651 | } |
UHSLMarcus | 2:e394671ef5f6 | 652 | |
UHSLMarcus | 5:41e97348e9e7 | 653 | int AMS_CCS811::i2c_write(char reg_addr, char* input, int len) { |
Steven Cooreman | 15:cf658680c53f | 654 | |
UHSLMarcus | 5:41e97348e9e7 | 655 | int write_count = -1; |
UHSLMarcus | 2:e394671ef5f6 | 656 | if (_n_wake_out != NULL) { // check nWAKE pin is set |
UHSLMarcus | 5:41e97348e9e7 | 657 | _n_wake_out->write(0); // Hold low |
UHSLMarcus | 5:41e97348e9e7 | 658 | wait_us(CCS811_T_AWAKE); // tAWAKE time to allow sensor I2C to wake up |
UHSLMarcus | 2:e394671ef5f6 | 659 | if (_i2c != NULL) { // check I2C interface is set |
UHSLMarcus | 2:e394671ef5f6 | 660 | _i2c->start(); // send start condition for write |
UHSLMarcus | 5:41e97348e9e7 | 661 | if(_i2c->write(CCS811_SLAVE_ADDR_W) == 1) { // write slave address |
UHSLMarcus | 2:e394671ef5f6 | 662 | if(_i2c->write(reg_addr) == 1) { // write register address |
UHSLMarcus | 5:41e97348e9e7 | 663 | write_count = 0; |
UHSLMarcus | 2:e394671ef5f6 | 664 | for (int i = 0; i < len; i++) { // write len bytes |
UHSLMarcus | 2:e394671ef5f6 | 665 | if(_i2c->write(input[i]) == 1) write_count++; // write each byte, if successful increment count |
UHSLMarcus | 5:41e97348e9e7 | 666 | else new_error(CCS811_LIB_I2CWRITE_ID); |
UHSLMarcus | 2:e394671ef5f6 | 667 | } |
UHSLMarcus | 5:41e97348e9e7 | 668 | } else new_error(CCS811_LIB_REG_ADDR_ID); |
UHSLMarcus | 5:41e97348e9e7 | 669 | } else new_error(CCS811_LIB_SLAVE_W_ID); |
Steven Cooreman | 15:cf658680c53f | 670 | _i2c->stop(); // send stop condition |
UHSLMarcus | 5:41e97348e9e7 | 671 | } else new_error(CCS811_LIB_I2C_ID); |
UHSLMarcus | 5:41e97348e9e7 | 672 | _n_wake_out->write(1); // set back to high |
UHSLMarcus | 5:41e97348e9e7 | 673 | wait_us(CCS811_T_DWAKE); // tDWAKE time to allow sensor I2C to sleep |
UHSLMarcus | 5:41e97348e9e7 | 674 | }else new_error(CCS811_LIB_N_WAKE_ID); |
Steven Cooreman | 15:cf658680c53f | 675 | |
UHSLMarcus | 2:e394671ef5f6 | 676 | return write_count; |
UHSLMarcus | 1:acfca1d3256d | 677 | } |