Hi, HAL_UART_STATE_BUSY_TX is always Set when I change the ClockPrescaler of USART Paremeter.My Cube configurations are in photo above. I have to drive Usart with 100 Baudrate. Systemclock Frequency is 50Mhz.  When SystemClock is 50Mhz and ClockPresc...

My PWM and DMA configurations shown in below image and I wrote a simple code to start pwm.  As you see below, I set a gpio output pin and after that pwm starting. PWM period has setted to 20ms. What I except, I except start pwm after a few us gpio ...