RAK4631 reduce power consumption in I2C and SPI

WisBlock
1

Please include the following information, in order for us to help you as effectively as possible.

  • What product do you wish to discuss? RAK4631

  • What firmware are you using? VSCode/PlatformIO/FreerTOS

  • What firmware version? BSP Library : 1.6.1 Bootloader : s140 6.1.1

  • Computer OS? Windows

  • What Computer OS version? 11 Pro

I would like to reduce the power consumption in normal operation mode.

Then I would like to reduce the operation frequency in the I2C, SPI and UART.

What is the command to reduce the frequency operation and what is the minimum frequency that I can configure, to preserve the operation with the sensors: RAK1904, RAK1906, RAK5801, RAK12500, RAK15007.

Regards,

Claudio

2

Which speed each device on I2C or SPI can accept depends on the chips that is used. You have to check the data sheets for the lower and upper limits.

In general I don’t think reducing the speed of I2C or SPI does reduce your power consumption. Transmissions will take longer with lower speeds, so there might be the opposite effect.

3

Thank you by your support.

Regards,

Claudio

4

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