fix(timer): pause the channel before new PWM config

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

Diff for: libraries/SrcWrapper/src/HardwareTimer.cpp

@@ -936,6 +936,9 @@ void HardwareTimer::setPWM(uint32_t channel, uint32_t pin, uint32_t frequency, u
   */
 void HardwareTimer::setPWM(uint32_t channel, PinName pin, uint32_t frequency, uint32_t dutycycle, callback_function_t PeriodCallback, callback_function_t CompareCallback)
 {
+  if (isRunningChannel(channel)) {
+    pauseChannel(channel);
+  }
   setMode(channel, TIMER_OUTPUT_COMPARE_PWM1, pin);
   setOverflow(frequency, HERTZ_FORMAT);
   setCaptureCompare(channel, dutycycle, PERCENT_COMPARE_FORMAT);