ESP32 write to registers

[bssmith237]

Hello everyone,

I have an ESP32 board connected with an IMU. I want to make few alterations on the IMU like hardcoding the calibration offsets values in order to use them every time the board powers on. My main concern is how can I write directly to the registers from the Arduino IDE platform. I imagine that this has to do mainly with C# programming and specifically with ESP32 but any help will be useful.

Thank you

[StridingDragon]

You essentially have to select the SPI device you want to address and then execute a SPI transaction using something like `spi_device_transmit()` etc. Don't forget to unselect the SPI device afterwards to make it available to other processes.

[filo_gr]

My main concern is how can I write directly to the registers from the Arduino IDE platform.

Which protocol do you need? ESP-IDF gives you a lot of libraries you can use for communication.
If you use Arduino IDE I think you installed the esp32 pack of libraries in the IDE.

[bssmith237]

My main concern is how can I write directly to the registers from the Arduino IDE platform.

Which protocol do you need? ESP-IDF gives you a lot of libraries you can use for communication.
If you use Arduino IDE I think you installed the esp32 pack of libraries in the IDE.

Thank you for your answer,

Yes I have installed the esp32 pack. So I should look for ESP-IDF package. I will try and inform you upon my outcome.

[chegewara]

Code: Select all

    Wire.beginTransmission((uint8_t)ADDRESS);  	// I2C address
    Wire.write((uint8_t)0x1);					// register address
    Wire.write((uint8_t)136);					// write byte/bytes
    Wire.endTransmission();					// end