wake up the sensor in STM

[Laiaborrell]

Hello!
When implementing the code for reading temperature in STM, the T adc value (before compensation formula) that is reading is continuously -256 (11111111111111111111111100000000), as happened with arduino when the sensor was not properly woke up. However, I am calling the following function inside the setup loop (checked with breakpoints that is run):

void wakeUp(uint8_t reg, uint8_t value){ 
	uint8_t txBuf[2]={reg & ~0x80, value};
	HAL_GPIO_WritePin(BME_CS_GPIO_Port, BME_CS_Pin, GPIO_PIN_RESET);
	HAL_SPI_Transmit(&hspi1, txBuf,2,10);
	HAL_GPIO_WritePin(BME_CS_GPIO_Port, BME_CS_Pin, GPIO_PIN_SET);
}

---

in the main function:

	wakeUp(CTRL_HUM,valHUM);
	wakeUp(CTRL_MEAS,valMEAS);

and still not working... .
Context:
CTRL_HUM=0xF2
valHUM=0b00000001
CTRL_MEAS=0xF4
valMEAS=0b00100111

I don't know if I am not using properly the HAL_SPI_Transmit function for writing in the corresponding registers or if it is something else. The full code is commited in the git repository in case it is needed.
Laia

[Laiaborrell]

Okay I was not selecting the CS pin correctly!

[Albert-Alvarez]

Glad to hear that you solved it 😉