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fix(TX16S): LCD clock speed lowered to within spec (#2127)

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Risto
2022-07-15 18:34:27 +10:00
committed by GitHub
parent 755365abfd
commit 386f8e6342
1 changed files with 10 additions and 5 deletions
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radio/src/targets/horus/lcd_driver.cpp
+10 -5
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@@ -288,14 +288,19 @@ void LCD_Init_LTDC()
LTDC_InitTypeDef LTDC_InitStruct;
/* Configure PLLSAI prescalers for LCD */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAI_N = 192 Mhz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLL_LTDC = 192/3 = 64 Mhz */
/* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64/4 = 16 Mhz */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 MHz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAI_N = 192 MHz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLL_LTDC = 192/3 = 64 MHz */
/* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64/4 = 16 MHz */
/* alternatively LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64/8 = 8 MHz */
//second pam is for audio
//third pam is for LCD
RCC_PLLSAIConfig(192, 6, 3);
RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div4);
#if defined(RADIO_TX16S)
RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div8);
#else
RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div4);
#endif
/* Enable PLLSAI Clock */
RCC_PLLSAICmd(ENABLE);