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Back-light PWM frequency changed from 100 to 500Hz (LCD was flickering at lower light levels)

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This commit is contained in:
Damjan Adamic
2014-11-29 19:21:40 +01:00
parent d64989baac
commit b64d200c94
1 changed files with 2 additions and 2 deletions
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radio/src/targets/taranis/lcd_driver.cpp
+2 -2
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@@ -239,7 +239,7 @@ static void LCD_BL_Config()
RCC->APB1ENR |= RCC_APB1ENR_TIM4EN ; // Enable clock
TIM4->ARR = 100 ;
TIM4->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 10000 - 1;
TIM4->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 50000 - 1; // 20us * 100 = 2ms => 500Hz
TIM4->CCMR1 = TIM_CCMR1_OC2M_1 | TIM_CCMR1_OC2M_2 ; // PWM
TIM4->CCMR2 = TIM_CCMR2_OC4M_1 | TIM_CCMR2_OC4M_2 ; // PWM
TIM4->CCER = TIM_CCER_CC4E | TIM_CCER_CC2E ;
@@ -258,7 +258,7 @@ static void LCD_BL_Config()
RCC->APB2ENR |= RCC_APB2ENR_TIM10EN ; // Enable clock
TIM10->ARR = 100 ;
TIM10->PSC = (PERI2_FREQUENCY * TIMER_MULT_APB2) / 10000 - 1;
TIM10->PSC = (PERI2_FREQUENCY * TIMER_MULT_APB2) / 50000 - 1; // 20us * 100 = 2ms => 500Hz
TIM10->CCMR1 = 0x60 ; // PWM
TIM10->CCER = 1 ;
TIM10->CCR1 = 80;