About Leon1

Leon1 · 2019-08-27

HI.My MCU is STM32L071CZ, CubeMX latest version on this period of time.I try to communicate with an external SPI-Flash IC. The SPI uses software NSS. The communication is good but only if I'm not using DMA. When I try to communicate with flash using ...

Leon1 · 2019-08-27

It seems that I use the wrong register callback function. I found this "HAL_DMA_RegisterCallback()" I will try it tomorrow. Thanks!

Leon1 · 2019-08-27

"Assume that HAL_SPI_TransmitReceive_DMA is asynchronous. You shouldn't deassert until you get the DMA complete interrupt."Yes, I try to do that with registered "HAL_SPI_TxRxCpltCallback" callback, but it fires before the transaction was compleat. I...

Leon1 · 2019-08-27

Hi Andrei.Yes, but in my case I use a software NSS. It's a simple configured GPIO in to out. It initialized with high level and when I need to start SPI transaction I put it manualy into low stater, which indicate for external flash that transaction ...

User statistics

User Activity

SPI with DMA incorrect NSS behavior

Re: SPI with DMA incorrect NSS behavior

Re: SPI with DMA incorrect NSS behavior

Re: SPI with DMA incorrect NSS behavior