AnsweredAssumed Answered

STM32F103XB: TIM2 CH1 on PA15 conflicts with SPI1 NSS

Question asked by Kolja Waschk on Jan 9, 2018

Hi,

 

Using CubeMX, I configured SPI1 on a STM32F103T8Ux as full-duplex master mapped on PB3..PB5, with hardware NSS (on PA15) disabled (set to SPI_NSS_SOFT in spi.c).

 

So, PA15 should be available for TIM2 CH1 PWM output. But no PWM activity can be seen on PA15 (it stays low) until I disable SPI1 peripheral (using HAL_SPI_DeInit() or just __HAL_RCC_SPI1_CLK_DISABLE()).

 

Did I miss some errata?

Kolja

Outcomes