About cpalmer54

cpalmer54 · 2025-01-14

Hello,I am seeking help trying to understand and hopefully fix. I am writing data to a 32 channel SPI DAC. I am writing 3 bytes to each channel. To write to all channels and update simultaneously i trigger a LDA line after all 32 channels have been w...

cpalmer54 · 2024-11-01

Hi,I seem to behaving an issue getting my STM32F411 PLL to stabilize using the HSI. The code I am using shown below. Setting it to 100MHZ. The code gets stuck in RCC_GetSYSCLKSource() != 0x08 ) continue; . It never returns 8. I had originally got ...

cpalmer54 · 2025-01-14

Thanks. That response was not directed towards you. I was answering another person, but I see that reply has now been deleted.by them. What you first advised makes sense to me. Thats what I will try, and thenreport back the actual results.

cpalmer54 · 2025-01-14

Im not using and dont use Hal. Its CMSIS

cpalmer54 · 2025-01-14

Thanks JW. I didn't realise the overhead would be in that magnitude. Does that mean I should be using the DMA FIFO?I assume I can do this under a single SPI CS and don't need it set it high and low between each transfer?

cpalmer54 · 2024-11-03

That has done the trick. I'm very grateful for the help. Thanks for taking the time to reply.

cpalmer54 · 2024-11-03

Thanks JW, I'm going to try this later.

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Delays between SPI transfers on STM32F411 using DMA

STM32F411 cant get PLL to stabilize using HSI

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Re: Delays between SPI transfers on STM32F411 using DMA

Re: STM32F411 cant get PLL to stabilize using HSI

Re: STM32F411 cant get PLL to stabilize using HSI