pwmout - STM - add read methods for period and pulsewidth

Author: talorion

targets/TARGET_STM/pwmout_api.c

@@ -386,6 +386,11 @@ void pwmout_period_us(pwmout_t *obj, int us)
     __HAL_TIM_ENABLE(&TimHandle);
 }
 
+int pwmout_read_period_us(pwmout_t *obj)
+{
+    return obj->period;
+}
+
 void pwmout_pulsewidth(pwmout_t *obj, float seconds)
 {
     pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
@@ -402,6 +407,12 @@ void pwmout_pulsewidth_us(pwmout_t *obj, int us)
     pwmout_write(obj, value);
 }
 
+int pwmout_read_pulsewidth_us(pwmout_t *obj)
+{
+    float tmp = pwmout_read(obj);
+    return (int)(tmp * (float)obj->period);
+}
+
 const PinMap *pwmout_pinmap()
 {
     return PinMap_PWM;