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fix(i2c): wrong clock frequencies for I2C5 and I2C6 #2535

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merged 1 commit into from
Oct 21, 2024
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fix(i2c): wrong clock frequencies for I2C5 and I2C6 #2535

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73 changes: 73 additions & 0 deletions libraries/Wire/src/utility/twi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -420,7 +420,49 @@ static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
#else
clkSrcFreq = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_I2C35);
#endif
if (clkSrcFreq == 0)
#endif
{
#ifdef __HAL_RCC_GET_I2C5_SOURCE
switch (__HAL_RCC_GET_I2C5_SOURCE()) {
#ifdef RCC_I2C5CLKSOURCE_HSI
case RCC_I2C5CLKSOURCE_HSI:
clkSrcFreq = HSI_VALUE;
break;
#endif
#ifdef RCC_I2C5CLKSOURCE_SYSCLK
case RCC_I2C5CLKSOURCE_SYSCLK:
clkSrcFreq = SystemCoreClock;
break;
#endif
#if defined(RCC_I2C5CLKSOURCE_PCLK1) || defined(RCC_I2C5CLKSOURCE_D2PCLK1)
#ifdef RCC_I2C5CLKSOURCE_PCLK1
case RCC_I2C5CLKSOURCE_PCLK1:
#endif
#ifdef RCC_I2C5CLKSOURCE_D2PCLK1
case RCC_I2C5CLKSOURCE_D2PCLK1:
#endif
clkSrcFreq = HAL_RCC_GetPCLK1Freq();
break;
#endif
#ifdef RCC_I2C5CLKSOURCE_CSI
case RCC_I2C5CLKSOURCE_CSI:
clkSrcFreq = CSI_VALUE;
break;
#endif
#ifdef RCC_I2C5CLKSOURCE_PLL3
case RCC_I2C5CLKSOURCE_PLL3:
HAL_RCCEx_GetPLL3ClockFreq(&PLL3_Clocks);
clkSrcFreq = PLL3_Clocks.PLL3_R_Frequency;
break;
#endif
default:
Error_Handler();
}
#else
Error_Handler();
#endif
}
}
#endif // I2C5_BASE
#if defined(I2C6_BASE)
Expand All @@ -431,7 +473,38 @@ static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
#else
clkSrcFreq = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_I2C46);
#endif
if (clkSrcFreq == 0)
#endif
{
#ifdef __HAL_RCC_GET_I2C6_SOURCE
switch (__HAL_RCC_GET_I2C6_SOURCE()) {
#ifdef RCC_I2C6CLKSOURCE_HSI
case RCC_I2C6CLKSOURCE_HSI:
clkSrcFreq = HSI_VALUE;
break;
#endif
#ifdef RCC_I2C6CLKSOURCE_SYSCLK
case RCC_I2C6CLKSOURCE_SYSCLK:
clkSrcFreq = SystemCoreClock;
break;
#endif
#ifdef RCC_I2C6CLKSOURCE_PCLK1
case RCC_I2C6CLKSOURCE_PCLK1:
clkSrcFreq = HAL_RCC_GetPCLK1Freq();
break;
#endif
#ifdef RCC_I2C6CLKSOURCE_MSIK
case RCC_I2C6CLKSOURCE_MSIK:
clkSrcFreq = MSI_VALUE;
break;
#endif
default:
Error_Handler();
}
#else
Error_Handler();
#endif
}
}
#endif // I2C6_BASE
return clkSrcFreq;
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