Thank you very much!Martin

Thanks a lot! This explains my problem! Is this also an issue in other STM32 families or do they use other methods of pin remapping?Martin

Hi,I'm experiencing nearly the same problem with the bluepill (STM32F103C8Tx). I configured SPI1 as "Receive Only Slave" with SPI1_SCK on PA5 and SPI1_MOSI on PA7. So PA6 should be free for PWM-generation with TIM3_CH1. As soon as I activate the SPI1...