Yes I am looking at synchronous USART used as SPI master. Would the USART insert a stop and start bit between each 8 bits in that mode? If so wouldn't that mess up the slave?
Yeah we will probably try GPIOs in push-pull mode and see how that works out. Without a timer connected to the USART clock it's not clear to me if there is any advantage configuring the USART peripheral at all. 1MHz raw is fine for us as long as it d...
Some more info about the SPI emulation, our board does not have the SCK connected to a timer pin unfortunately, so it does not meet the requirements of AN4678.
We connected the SPI slave device to USART because the we did not want to share the 2 SPI available peripherals, since they were used for a critical SPI device and a I2S device on the SPI pins. We are talking about STM32F405. We are now considering ...
