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Adding support for wakeup from TwoWire #72
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If it is not too hard I could take a look at implementing it myself, but I am assuming there may be a reason for it to have been left out of the library so far. |
I @mkals |
Ok, thanks for your quick reply! I have been looking into this for a few hours now, but I am struggling. The core needs to wake in time for the address specified in the I2C packet to be parsed, but I am not sure how to can be ensured with the delays to wake from the sleep modes. Any suggestions as to where I should start looking for implementing this? There are no options related to I2C wake from sleep in the STM32CubeMX tool for example.. |
Well, in that case I try to find an example project in the STM32CubeFw. From Reference manual |
Thanks a lot @fpistm! I'll see what I can figure out. |
By setting the I make sure I use HSI by calling |
I have also tried setting other bits in the I2C_CR1 register manually, but it does not make a difference.
|
Hard to tell. Best thing would be to properly add those mechanism to Wire. |
Thank you for the infomation. I'm using stm32l432kc and tried but not succeded in handleing i2c with low poer. === What I tried === I called // manualy add
if (HAL_I2CEx_EnableWakeUp(handle)) {
// SERIAL_DEBUG.println("error on enabling wakeup");
Error_Handler();
} I called |
Are there any plans for implementing the
enableWakeupFrom(TwoWire ...)
function? This would be very useful to have!The text was updated successfully, but these errors were encountered: