1/27/16 updated JJ
vl6180x.cpp@0:375445d76687, 2016-01-27 (annotated)
- Committer:
- j_j205
- Date:
- Wed Jan 27 20:48:49 2016 +0000
- Revision:
- 0:375445d76687
1/27/16 updated JJ
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j_j205 | 0:375445d76687 | 1 | #include "vl6180x.h" |
j_j205 | 0:375445d76687 | 2 | #include "mbed.h" |
j_j205 | 0:375445d76687 | 3 | |
j_j205 | 0:375445d76687 | 4 | VL6180x::VL6180x(I2C &_i2c, char _address): i2c(_i2c), address(_address) |
j_j205 | 0:375445d76687 | 5 | { |
j_j205 | 0:375445d76687 | 6 | address = I2C_SLAVE_DEFAULT_ADDRESS; |
j_j205 | 0:375445d76687 | 7 | } |
j_j205 | 0:375445d76687 | 8 | |
j_j205 | 0:375445d76687 | 9 | VL6180x::VL6180x(PinName sda, PinName scl, char _address): i2c(sda, scl), address(_address) |
j_j205 | 0:375445d76687 | 10 | { |
j_j205 | 0:375445d76687 | 11 | i2c.frequency(400000); |
j_j205 | 0:375445d76687 | 12 | address = I2C_SLAVE_DEFAULT_ADDRESS; |
j_j205 | 0:375445d76687 | 13 | } |
j_j205 | 0:375445d76687 | 14 | |
j_j205 | 0:375445d76687 | 15 | void VL6180x::initialize() |
j_j205 | 0:375445d76687 | 16 | { |
j_j205 | 0:375445d76687 | 17 | |
j_j205 | 0:375445d76687 | 18 | // Mandatory : private registers |
j_j205 | 0:375445d76687 | 19 | setRegister(0x0207, 0x01); |
j_j205 | 0:375445d76687 | 20 | setRegister(0x0208, 0x01); |
j_j205 | 0:375445d76687 | 21 | setRegister(0x0096, 0x00); |
j_j205 | 0:375445d76687 | 22 | setRegister(0x0097, 0xfd); |
j_j205 | 0:375445d76687 | 23 | setRegister(0x00e3, 0x00); |
j_j205 | 0:375445d76687 | 24 | setRegister(0x00e4, 0x04); |
j_j205 | 0:375445d76687 | 25 | setRegister(0x00e5, 0x02); |
j_j205 | 0:375445d76687 | 26 | setRegister(0x00e6, 0x01); |
j_j205 | 0:375445d76687 | 27 | setRegister(0x00e7, 0x03); |
j_j205 | 0:375445d76687 | 28 | setRegister(0x00f5, 0x02); |
j_j205 | 0:375445d76687 | 29 | setRegister(0x00d9, 0x05); |
j_j205 | 0:375445d76687 | 30 | setRegister(0x00db, 0xce); |
j_j205 | 0:375445d76687 | 31 | setRegister(0x00dc, 0x03); |
j_j205 | 0:375445d76687 | 32 | setRegister(0x00dd, 0xf8); |
j_j205 | 0:375445d76687 | 33 | setRegister(0x009f, 0x00); |
j_j205 | 0:375445d76687 | 34 | setRegister(0x00a3, 0x3c); |
j_j205 | 0:375445d76687 | 35 | setRegister(0x00b7, 0x00); |
j_j205 | 0:375445d76687 | 36 | setRegister(0x00bb, 0x3c); |
j_j205 | 0:375445d76687 | 37 | setRegister(0x00b2, 0x09); |
j_j205 | 0:375445d76687 | 38 | setRegister(0x00ca, 0x09); |
j_j205 | 0:375445d76687 | 39 | setRegister(0x0198, 0x01); |
j_j205 | 0:375445d76687 | 40 | setRegister(0x01b0, 0x17); |
j_j205 | 0:375445d76687 | 41 | setRegister(0x01ad, 0x00); |
j_j205 | 0:375445d76687 | 42 | setRegister(0x00ff, 0x05); |
j_j205 | 0:375445d76687 | 43 | setRegister(0x0100, 0x05); |
j_j205 | 0:375445d76687 | 44 | setRegister(0x0199, 0x05); |
j_j205 | 0:375445d76687 | 45 | setRegister(0x01a6, 0x1b); |
j_j205 | 0:375445d76687 | 46 | setRegister(0x01ac, 0x3e); |
j_j205 | 0:375445d76687 | 47 | setRegister(0x01a7, 0x1f); |
j_j205 | 0:375445d76687 | 48 | setRegister(0x0030, 0x00); |
j_j205 | 0:375445d76687 | 49 | |
j_j205 | 0:375445d76687 | 50 | // Recommended : Public registers - See data sheet for more detail |
j_j205 | 0:375445d76687 | 51 | setRegister(SYSTEM_MODE_GPIO1, 0x10); // Enables polling for ‘New Sample ready’ |
j_j205 | 0:375445d76687 | 52 | // when measurement completes |
j_j205 | 0:375445d76687 | 53 | setRegister(READOUT_AVERAGING_SAMPLE_PERIOD, 0x30); // Set the averaging sample period |
j_j205 | 0:375445d76687 | 54 | // (compromise between lower noise and |
j_j205 | 0:375445d76687 | 55 | // increased execution time) |
j_j205 | 0:375445d76687 | 56 | setRegister(SYSALS_ANALOGUE_GAIN, 0x46); // Sets the light and dark gain (upper |
j_j205 | 0:375445d76687 | 57 | // nibble). Dark gain should not be |
j_j205 | 0:375445d76687 | 58 | // changed. |
j_j205 | 0:375445d76687 | 59 | setRegister(SYSRANGE_VHV_REPEAT_RATE, 0xFF); // sets the # of range measurements after |
j_j205 | 0:375445d76687 | 60 | // which auto calibration of system is |
j_j205 | 0:375445d76687 | 61 | // performed |
j_j205 | 0:375445d76687 | 62 | setRegister(SYSALS_INTEGRATION_PERIOD, 0x63); // Set ALS integration time to 100ms |
j_j205 | 0:375445d76687 | 63 | setRegister(SYSRANGE_VHV_RECALIBRATE, 0x01); // perform a single temperature calibration |
j_j205 | 0:375445d76687 | 64 | // of the ranging sensor |
j_j205 | 0:375445d76687 | 65 | |
j_j205 | 0:375445d76687 | 66 | |
j_j205 | 0:375445d76687 | 67 | setRegister(SYSRANGE_INTERMEASUREMENT_PERIOD, 0x09); // Set default ranging inter-measurement |
j_j205 | 0:375445d76687 | 68 | // period to 100ms |
j_j205 | 0:375445d76687 | 69 | setRegister(SYSALS_INTERMEASUREMENT_PERIOD, 0x31); // Set default ALS inter-measurement period |
j_j205 | 0:375445d76687 | 70 | // to 500ms |
j_j205 | 0:375445d76687 | 71 | setRegister(SYSTEM_INTERRUPT_CONFIG_GPIO, 0x24); // Configures interrupt on ‘New Sample |
j_j205 | 0:375445d76687 | 72 | // Ready threshold event’ |
j_j205 | 0:375445d76687 | 73 | } |
j_j205 | 0:375445d76687 | 74 | |
j_j205 | 0:375445d76687 | 75 | void VL6180x::startContinuousOperation() |
j_j205 | 0:375445d76687 | 76 | { |
j_j205 | 0:375445d76687 | 77 | setRegister(SYSRANGE_START, 0x03); |
j_j205 | 0:375445d76687 | 78 | |
j_j205 | 0:375445d76687 | 79 | } |
j_j205 | 0:375445d76687 | 80 | |
j_j205 | 0:375445d76687 | 81 | int VL6180x::getDistance() |
j_j205 | 0:375445d76687 | 82 | { |
j_j205 | 0:375445d76687 | 83 | int distance = 0; |
j_j205 | 0:375445d76687 | 84 | // should test bit 2 of RESULT_INTERRUPT_STATUS_GPIO ? |
j_j205 | 0:375445d76687 | 85 | distance = getRegister(RESULT_RANGE_VAL); |
j_j205 | 0:375445d76687 | 86 | // should clear interrupt ? |
j_j205 | 0:375445d76687 | 87 | return distance; |
j_j205 | 0:375445d76687 | 88 | } |
j_j205 | 0:375445d76687 | 89 | |
j_j205 | 0:375445d76687 | 90 | int VL6180x::getSingleDistance() |
j_j205 | 0:375445d76687 | 91 | { |
j_j205 | 0:375445d76687 | 92 | int distance = 0; |
j_j205 | 0:375445d76687 | 93 | while(getRegister(RESULT_RANGE_STATUS) & 0x01 != 0x01); |
j_j205 | 0:375445d76687 | 94 | setRegister(SYSRANGE_START, 0x01); // start measurement |
j_j205 | 0:375445d76687 | 95 | while(getRegister(RESULT_INTERRUPT_STATUS_GPIO) & 0x04 != 0x04); |
j_j205 | 0:375445d76687 | 96 | distance = getRegister(RESULT_RANGE_VAL); |
j_j205 | 0:375445d76687 | 97 | setRegister(SYSTEM_INTERRUPT_CLEAR, 0x07); |
j_j205 | 0:375445d76687 | 98 | return distance; |
j_j205 | 0:375445d76687 | 99 | } |
j_j205 | 0:375445d76687 | 100 | |
j_j205 | 0:375445d76687 | 101 | float VL6180x::getAmbientLight() |
j_j205 | 0:375445d76687 | 102 | { |
j_j205 | 0:375445d76687 | 103 | return 0.0f; |
j_j205 | 0:375445d76687 | 104 | } |
j_j205 | 0:375445d76687 | 105 | |
j_j205 | 0:375445d76687 | 106 | void VL6180x::setRegister(int reg, int value) |
j_j205 | 0:375445d76687 | 107 | { |
j_j205 | 0:375445d76687 | 108 | char data_write[3]; |
j_j205 | 0:375445d76687 | 109 | data_write[0] = ((reg &0xff00 ) >> 8); |
j_j205 | 0:375445d76687 | 110 | data_write[1] = (reg &0x00ff ); |
j_j205 | 0:375445d76687 | 111 | data_write[2] = value; |
j_j205 | 0:375445d76687 | 112 | i2c.write(address, data_write, 3); |
j_j205 | 0:375445d76687 | 113 | } |
j_j205 | 0:375445d76687 | 114 | |
j_j205 | 0:375445d76687 | 115 | int VL6180x::getRegister(int reg) |
j_j205 | 0:375445d76687 | 116 | { |
j_j205 | 0:375445d76687 | 117 | char data_write[2]; |
j_j205 | 0:375445d76687 | 118 | char data_read[1]; |
j_j205 | 0:375445d76687 | 119 | data_write[0] = ((reg &0xff00 ) >> 8); |
j_j205 | 0:375445d76687 | 120 | data_write[1] = (reg &0x00ff ) ; |
j_j205 | 0:375445d76687 | 121 | |
j_j205 | 0:375445d76687 | 122 | i2c.write(address, data_write, 2, 1); //no stop |
j_j205 | 0:375445d76687 | 123 | i2c.read(address, data_read, 1, 0); |
j_j205 | 0:375445d76687 | 124 | |
j_j205 | 0:375445d76687 | 125 | return data_read[0]; |
j_j205 | 0:375445d76687 | 126 | } |
j_j205 | 0:375445d76687 | 127 | |
j_j205 | 0:375445d76687 | 128 | VL6180x::Identification VL6180x::getIdentification() |
j_j205 | 0:375445d76687 | 129 | { |
j_j205 | 0:375445d76687 | 130 | |
j_j205 | 0:375445d76687 | 131 | char data_write[2]; |
j_j205 | 0:375445d76687 | 132 | char data_read[10]; |
j_j205 | 0:375445d76687 | 133 | data_write[0] = ( (0x00 &0xff00 ) >> 8); |
j_j205 | 0:375445d76687 | 134 | data_write[1] = (0x00 &0x00ff ) ; |
j_j205 | 0:375445d76687 | 135 | |
j_j205 | 0:375445d76687 | 136 | i2c.write(address, data_write, 2, 1); //no stop |
j_j205 | 0:375445d76687 | 137 | i2c.read(address, data_read, 10, 0); |
j_j205 | 0:375445d76687 | 138 | |
j_j205 | 0:375445d76687 | 139 | Identification id; |
j_j205 | 0:375445d76687 | 140 | id.model = data_read[0]; |
j_j205 | 0:375445d76687 | 141 | id.modelRevMajor = data_read[1]; |
j_j205 | 0:375445d76687 | 142 | id.modelRevMinor = data_read[2]; |
j_j205 | 0:375445d76687 | 143 | id.moduleRevMajor = data_read[3]; |
j_j205 | 0:375445d76687 | 144 | id.moduleRevMinor = data_read[4]; |
j_j205 | 0:375445d76687 | 145 | id.date = data_read[6] << 8 | data_read[7]; |
j_j205 | 0:375445d76687 | 146 | id.time = data_read[8] << 8 | data_read[9]; |
j_j205 | 0:375445d76687 | 147 | return id; |
j_j205 | 0:375445d76687 | 148 | } |
j_j205 | 0:375445d76687 | 149 | |
j_j205 | 0:375445d76687 | 150 | void VL6180x::printIdentification(VL6180x::Identification id) |
j_j205 | 0:375445d76687 | 151 | { |
j_j205 | 0:375445d76687 | 152 | printf("VL6180x Identification:\r\n"); |
j_j205 | 0:375445d76687 | 153 | printf("Model id: 0x%02X\r\n", id.model); |
j_j205 | 0:375445d76687 | 154 | printf("Model rev: %d.%d\r\n", id.modelRevMajor, id.modelRevMinor); |
j_j205 | 0:375445d76687 | 155 | printf("Module rev: %d.%d\r\n", id.moduleRevMajor, id.modelRevMajor); |
j_j205 | 0:375445d76687 | 156 | printf("Date: %04d-%02d-%02d (%d)\r\n", ((id.date >> 12) & 0x0F) + 2010, (id.date >> 8) & 0x0F, (id.date >> 3) & 0x1F, id.date & 0x07); |
j_j205 | 0:375445d76687 | 157 | printf("Time: %02d:%02d:%02d\r\n", (id.time / 60*60) % 24, (id.time / 60) % 60, id.time % 60); |
j_j205 | 0:375445d76687 | 158 | } |
j_j205 | 0:375445d76687 | 159 | |
j_j205 | 0:375445d76687 | 160 | void VL6180x::setAddress(int address) |
j_j205 | 0:375445d76687 | 161 | { |
j_j205 | 0:375445d76687 | 162 | char data[3]; |
j_j205 | 0:375445d76687 | 163 | data[0] = I2C_SLAVE_DEVICE_ADDRESS / 256; |
j_j205 | 0:375445d76687 | 164 | data[1] = I2C_SLAVE_DEVICE_ADDRESS % 256; |
j_j205 | 0:375445d76687 | 165 | data[2] = address >> 1; |
j_j205 | 0:375445d76687 | 166 | i2c.write(address, data, 3); //no stop |
j_j205 | 0:375445d76687 | 167 | } |