Merge pull request #250 from HyperloopUPV-H8/features/getfrequency

add get frequency function

Author: StefanCostea

Inc/HALAL/Services/PWM/PWM/PWM.hpp

@@ -18,6 +18,7 @@ class PWM {
 	TimerPeripheral* peripheral;
 	uint32_t channel;
 	float duty_cycle;
+	uint32_t frequency;
 
 	PWM() = default;
 
@@ -28,6 +29,7 @@ class PWM {
 	void turn_off();
 	void set_duty_cycle(float duty_cycle);
 	void set_frequency(uint32_t frequency);
+	uint32_t get_frequency();
 
 	friend class DualPWM;
 	friend class PhasedPWM;

Src/HALAL/Services/PWM/PWM/PWM.cpp

@@ -49,7 +49,12 @@ void PWM::set_duty_cycle(float duty_cycle) {
 }
 
 void PWM::set_frequency(uint32_t frequency) {
+	this->frequency = frequency;
 	TIM_TypeDef& timer = *peripheral->handle->Instance;
 	timer.ARR = (HAL_RCC_GetPCLK1Freq()*2 / (timer.PSC+1)) / frequency;
 	set_duty_cycle(duty_cycle);
 }
+
+uint32_t PWM::get_frequency() {
+	return frequency;
+}