Hi, new firmware now suppport LTR553 sensor.

thank you for the extensive code example.

However, the original topic was for UIFlow 2.0 (not IDE code) and the user having difficulties is @HWTaro9.

That said, it is still good to know that it works when using IDE code.

Thanks
Felix

#define LTR553_ADDR 0x23

void writeRegister8(uint8_t _address, uint8_t subAddress, uint8_t data, uint32_t freq) {
Wire1.beginTransmission(_address);
Wire1.write(subAddress);
Wire1.write(data);
Wire1.endTransmission();
}

uint8_t readRegister8(uint8_t _address, uint8_t subAddress, uint32_t freq) {
Wire1.beginTransmission(_address);
Wire1.write(subAddress);
Wire1.endTransmission();
Wire1.requestFrom(_address, (size_t)1);
return Wire1.read();
}

void readRegister(uint8_t _address, uint8_t subAddress, uint8_t buff[], int size, uint32_t freq) {
Wire1.beginTransmission(_address);
Wire1.write(subAddress);
Wire1.endTransmission();
Wire1.requestFrom(_address, (size_t)size);
for (int i = 0; i < size; i++) {
buff[i] = Wire1.read();
}
}

bool LTR553Init() {
// soft reset
uint8_t value_r = readRegister8(LTR553_ADDR, 0x80, 100000L);
value_r &= (~0x02);
uint8_t value_w = value_r | 0x02;
writeRegister8(LTR553_ADDR, 0x80, value_w, 100000L);

// PS Led Pluse
writeRegister8(LTR553_ADDR, 0x83, 0x0F, 100000L);
// ALS Active Mode
value_r = readRegister8(LTR553_ADDR, 0x80, 100000L);
value_r &= (~0x01);
value_w = value_r | 0x01;
writeRegister8(LTR553_ADDR, 0x80, value_w, 100000L);
// PS Active Mode
value_r = readRegister8(LTR553_ADDR, 0x81, 100000L);
value_r &= (~0x03);
value_w = value_r | 0x03;
writeRegister8(LTR553_ADDR, 0x81, value_w, 100000L);
return true;

}

uint32_t GetLTR553AlsCh0Value() {
uint8_t buffer[2];
uint32_t result;
readRegister(LTR553_ADDR, 0x8A, buffer, 2, 100000L);
result = (buffer[1] << 8) | buffer[0];
return result;
}

uint32_t GetLTR553AlsCh1Value() {
uint8_t buffer[2];
uint32_t result;
readRegister(LTR553_ADDR, 0x88, buffer, 2, 100000L);
result = (buffer[1] << 8) | buffer[0];
return result;
}

uint16_t GetLTR553PsValue() {
uint8_t buffer[2];
uint16_t result;
readRegister(LTR553_ADDR, 0x8D, buffer, 2, 100000L);
buffer[0] &= 0xFF;
buffer[1] &= 0x07;
result = (buffer[1] << 8) | buffer[0];
return result;
}

call the Init from setup and call the Get* ones as you need

that is only the general description of how I2C works. Or am I missing something?

I am looking for a list of register addresses which can be read and write to.

Thanks
Felix

it is my understanding that audio data from the microphones are being sent via I2S (not I2C), no?

Do you have a document explaining the I2C commands of the ES7210?

Thanks
Felix

1: not sure when this is actually needed.

2: I2C scan returns a list with decimal values (not hex) therefore you should be looking for the decimal value 35 (=0x23) in the list.

3: I am able to write to and read from the light sensor like below:

Thanks
Felix