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cdjackson · 2024-01-01

I'm using the STM32F412 with an SPI LCD on a custom board and am having problems with the SPI communications. It seems that the TXE flag is always high, and therefore the code locks on the -:while (!__HAL_SPI_GET_FLAG(&spiHal, SPI_FLAG_TXE)):- check...

cdjackson · 2024-01-03

Thanks. I have tried to read out the registers, with (for example) READ_REG(hspi2.Instance->CR1). This always returns 0 on all registers. I'm not sure if this is the correct way to read the registers - it seems so from other code I've looked at, but ...

cdjackson · 2024-01-03

@TDK wrote:All STM32F4 chips have the same SPI peripheral. That's not the issue.> it's impossible to say if it enables everythingWhy? Can't you look at it?Sounds like the peripheral isn't enabled, or is in slave mode.I can look through the source, of...

cdjackson · 2024-01-03

Thanks for the response. You're correct - the check is negative, but the issue is the same as the code locks on the line I mentioned above because the TXE flag is always showing not empty which is the base of the issue.I'm using a library that worked...

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STM32F412 SPI not sending

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