//note this has crc bytes embedded, per datasheet, so provide 12 byte buf
int SI7021::getSerialBytes(byte * buf) {
_writeReg(SERIAL1_READ, sizeof SERIAL1_READ);
_readReg(buf, 6);
_writeReg(SERIAL2_READ, sizeof SERIAL2_READ);
_readReg(buf + 6, 6);
// could verify crc here and return only the 8 bytes that matter
return 1;
}
//note this has crc bytes embedded, per datasheet, so provide 12 byte buf
int SI7021::getUIDBytes(byte * buf) {
_writeReg(UID1_READ, sizeof UID1_READ);
_readReg(buf, 6);
_writeReg(UID2_READ, sizeof UID2_READ);
_readReg(buf + 6, 6);
// could verify crc here and return only the 8 bytes that matter
return 1;
}
void SI7021::_command(byte cmd, byte * buf ) {
_writeReg(&cmd, sizeof cmd);
#if defined(ARDUINO_ARCH_ESP8266)
delay(25);
#endif
_readReg(buf, 2);
}
void cSI7021::_command(uint8_t cmd, uint8_t * buf ) {
_writeReg(&cmd, 1);
#if defined(ARDUINO_ARCH_ESP8266)
delay(25);
#endif
_readReg(buf, 2);
}
void TCS3414::setGain(byte gain, byte prescaler) {
/*
switch(gain) {
case GAIN_4:
this->gain = 4;
break;
case GAIN_16:
this->gain = 16;
break;
case GAIN_64:
this->gain = 64;
break;
case GAIN_1:
default:
this->gain = 1;
break;
};
if (prescaler > 0)
this->prescaler = 1 << prescaler;
else
this->prescaler = 1;
*/
_writeReg(REG_GAIN, gain | prescaler);
}
void TCS3414::init(int mode) {
switch(mode) {
case TCS3414_LEVELINTERRUPTMODE:
// the process below will set an interrupt each time the value of the CLEAR channel goes above 65530 (overflow, right ?)
setLevelThreshold(REG_LOW_THRESH, 0x0000);
setLevelThreshold(REG_HIGH_THRESH, 4000);
_writeReg(REG_INT_SOURCE, INT_SOURCE_CLEAR); // set the interrupt source to the CLEAR channel
break;
case TCS3414_FREEMODE:
default:
_writeReg(REG_TIMING, INTEG_MODE_FREE | INTEG_PARAM_INTTIME_12MS);
_writeReg(REG_INT, INTR_CTL_DISABLE);
setGain(GAIN_1, PRESCALER_1); // set default gain value and prescaler value
// _writeReg(REG_CTL, 0x03); // Enable ADCs;
break;
};
}
void SI7021::setHeater(bool on) {
byte userbyte;
if (on) {
userbyte = 0x3E;
} else {
userbyte = 0x3A;
}
byte userwrite[] = {USER1_WRITE, userbyte};
_writeReg(userwrite, sizeof userwrite);
}
void senselSetLEDBrightnessAll(uint8 brightness)
{
int i;
uint8 led_buf[16];
for(i = 0; i < 16; i++)
led_buf[i] = brightness;
_writeReg(SENSEL_REG_LED_BRIGHTNESS, 16, led_buf);
}
void TCS3414::setIntegrationTime(byte itime) {
// this->itime = itime & 0x0F;
_writeReg(REG_TIMING, itime);
}
bool senselSetFrameContentControl(uint8 content)
{
return _writeReg(SENSEL_REG_SCAN_CONTENT_CONTROL, 1, &content);
}
void senselSetLEDBrightness(int idx, uint8 brightness)
{
_writeReg(SENSEL_REG_LED_BRIGHTNESS + idx, 1, &brightness);
}
bool senselStartScanning()
{
uint8 val = 1;
return _writeReg(SENSEL_REG_SCAN_ENABLED, 1, &val);
}
bool senselStopScanning(void)
{
uint8 val = 0;
return _writeReg(SENSEL_REG_SCAN_ENABLED, 1, &val);
}
// @return 0 on success, -errno on failure
int writeReg(int reg, uint8_t val)
{
return _writeReg(reg, val);
}
void TCS3414::disableADC() {
_writeReg(REG_CTL, CTL_POWER);
}
void TCS3414::enableADC() {
_writeReg(REG_CTL, CTL_ADC_EN | CTL_POWER);
}
void SI7021::_command(byte cmd, byte * buf ) {
_writeReg(&cmd, sizeof cmd);
delay(25); //for ESP8266
_readReg(buf, 3); // 1 - data, 2 - data, 3 - CRC
}
void TCS3414::powerOn() {
_writeReg(REG_CTL, CTL_POWER);
}
