/* USER CODE BEGIN 0 */
uint8_t receiveBuffer[BUFFER_UART_LEN];
#define BASE_FREQ 16000000

void runCmdFromUart(void){
  uint32_t frequency = 0;
  uint32_t ARR_reg_val = 0;
  uint32_t PSC_reg_val = 7;
  
  if(receiveBuffer[0] == 'f'){ //frequency
    frequency += (receiveBuffer[1] - 0x30) *100000;
    frequency += (receiveBuffer[2] - 0x30) *10000;
    frequency += (receiveBuffer[3] - 0x30) *1000;
    frequency += (receiveBuffer[4] - 0x30) *100;
    frequency += (receiveBuffer[5] - 0x30) *10;
    frequency += receiveBuffer[6] - 0x30;
   if(frequency > 10000) 
     PSC_reg_val = 0;
   else
     if(frequency > 100)
     PSC_reg_val = 7;
     else
     PSC_reg_val = 4095;
   
  ARR_reg_val = (BASE_FREQ/(PSC_reg_val+1))/frequency;
  LL_TIM_WriteReg(TIM1, PSC, PSC_reg_val);
  LL_TIM_WriteReg(TIM1, ARR, ARR_reg_val);
  LL_TIM_OC_SetCompareCH4(TIM1, (ARR_reg_val/2)); //50% PWM, 100 kHz
  }

}
/* USER CODE END 0 */