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🐛 Fix TFT backlight [STM32] (#23062)

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This commit is contained in:
Tanguy Pruvot
2021-11-04 18:04:04 +01:00
committed by Scott Lahteine
parent 89ec1c71f0
commit fd136d5501
6 changed files with 22 additions and 8 deletions
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4
Marlin/src/HAL/STM32/fast_pwm.cpp
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@ -28,11 +28,13 @@
#include "timers.h"
void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
if (!PWM_PIN(pin)) return; // Don't proceed if no hardware timer
PinName pin_name = digitalPinToPinName(pin);
TIM_TypeDef *Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM);
uint16_t adj_val = Instance->ARR * v / v_size;
if (invert) adj_val = Instance->ARR - adj_val;
switch (get_pwm_channel(pin_name)) {
case TIM_CHANNEL_1: LL_TIM_OC_SetCompareCH1(Instance, adj_val); break;
case TIM_CHANNEL_2: LL_TIM_OC_SetCompareCH2(Instance, adj_val); break;