About QShi.1

QShi.1 · 2020-10-08

I want to get a two 16 bit values through two spi interface within 4µs . So I set the baudrate 18Mbits/s so that for 16bits it takes just < 1µs. Everything is working fine.But the problem is the overhead time between twice HAL_SPI_RECEIVE is nealry 8...

QShi.1 · 2020-10-09

Hi Jan,Thank you for the reply! I have changed to STM32F4, It takes just 3µs time with the same code and is sufficient for my project. It depens on the System Clock.

QShi.1 · 2020-10-09

The aim is I have to get two channel data at the same time and make signal processing. I couldn't wait a long time for multiple datas.

QShi.1 · 2020-10-09

DMA is just suitable for a single SPI interface with multiple receiver or transmitter. It doesn't help two SPI Interfaces. The problem is always there. Even worse, because the two channel data couldn't be get at the same time.

QShi.1 · 2020-10-08

Are there any low level examples for spi date receive of STM32f303?

QShi.1 · 2020-10-08

Hi, thank you for the reply! A16 bit (not one byte) is read at a time, you could also see the configuration and signal, there are 16 times clock at a time. There are just a long overhead between twice HAL_SPI_RECEIVE Block. For the Optimization of C ...

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How to reduce STM32f303 SPI Overhead time and what is the min. running time?

Re: How to reduce STM32f303 SPI Overhead time and what is the min. running time?

Re: How to reduce STM32f303 SPI Overhead time and what is the min. running time?

Re: How to reduce STM32f303 SPI Overhead time and what is the min. running time?

Re: How to reduce STM32f303 SPI Overhead time and what is the min. running time?

Re: How to reduce STM32f303 SPI Overhead time and what is the min. running time?