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Caveman · 2023-06-30

I have two different STM32L451 boards.One version runs at 3.3V and the other at 1.95V.On the 3.3V board, I can enter the SPI Bootloader and erase/program Flash reliably.But on the 1.95V board, the flash write fails. In the same 2K page and on usually...

Caveman · 2022-04-22

I simply wanted to make an identical program but with a different GPIO pinout. The SPI busses are all on the same pins and configured the same. What could I have touched that would cause the SPI transfer to not start ? I had to switch to HAL_SPI_Re...

Caveman · 2023-02-15

Yes, see my post below. It is solved.

Caveman · 2023-02-15

I just found the real answer myself. In the derived program, some application-level changes were made resulting in the .BSS section stacking up differently. This resulted in the SPI receive buffers being located in DTCM RAM which is not on any bus. T...

Caveman · 2022-04-26

Thanks Petr, I have CubeMX version 6.1.0 and my inits are in the correct order.I noticed in some of the other answers, they also have System_clock_config() after MX_DMA_Init(); so I changed my program to match that order. No effect. Besides, the work...

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SPI Bootloader with micro at lower voltage

HAL_SPI_Receive_DMA() won't start a transfer in a CubeMX project that I cloned. No activity on SPI bus. HAL call returns success. .IOC and generated files all compare successfully. (only changed some GPIO, SPI is configured same) What could I be missing ?

Re: HAL_SPI_Receive_DMA() won't start a transfer in a CubeMX project that I cloned. No activity on SPI bus. HAL call returns success. .IOC and generated files all compare successfully. (only changed some GPIO, SPI is configured same) What could I be missing ?

Re: HAL_SPI_Receive_DMA() won't start a transfer in a CubeMX project that I cloned. No activity on SPI bus. HAL call returns success. .IOC and generated files all compare successfully. (only changed some GPIO, SPI is configured same) What could I be missing ?

Re: HAL_SPI_Receive_DMA() won't start a transfer in a CubeMX project that I cloned. No activity on SPI bus. HAL call returns success. .IOC and generated files all compare successfully. (only changed some GPIO, SPI is configured same) What could I be missing ?