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Commit511ed73

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fix(i2c): wrong clock frequencies for I2C5 and I2C6
Fixes#2534Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
1 parent42e0262 commit511ed73

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  • libraries/Wire/src/utility

1 file changed

+73
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‎libraries/Wire/src/utility/twi.c

Lines changed: 73 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -420,7 +420,49 @@ static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
420420
#else
421421
clkSrcFreq=HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_I2C35);
422422
#endif
423+
if (clkSrcFreq==0)
424+
#endif
425+
{
426+
#ifdef__HAL_RCC_GET_I2C5_SOURCE
427+
switch (__HAL_RCC_GET_I2C5_SOURCE()) {
428+
#ifdefRCC_I2C5CLKSOURCE_HSI
429+
caseRCC_I2C5CLKSOURCE_HSI:
430+
clkSrcFreq=HSI_VALUE;
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break;
432+
#endif
433+
#ifdefRCC_I2C5CLKSOURCE_SYSCLK
434+
caseRCC_I2C5CLKSOURCE_SYSCLK:
435+
clkSrcFreq=SystemCoreClock;
436+
break;
437+
#endif
438+
#if defined(RCC_I2C5CLKSOURCE_PCLK1)|| defined(RCC_I2C5CLKSOURCE_D2PCLK1)
439+
#ifdefRCC_I2C5CLKSOURCE_PCLK1
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caseRCC_I2C5CLKSOURCE_PCLK1:
441+
#endif
442+
#ifdefRCC_I2C5CLKSOURCE_D2PCLK1
443+
caseRCC_I2C5CLKSOURCE_D2PCLK1:
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#endif
445+
clkSrcFreq=HAL_RCC_GetPCLK1Freq();
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break;
447+
#endif
448+
#ifdefRCC_I2C5CLKSOURCE_CSI
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caseRCC_I2C5CLKSOURCE_CSI:
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clkSrcFreq=CSI_VALUE;
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break;
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#endif
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#ifdefRCC_I2C5CLKSOURCE_PLL3
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caseRCC_I2C5CLKSOURCE_PLL3:
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HAL_RCCEx_GetPLL3ClockFreq(&PLL3_Clocks);
456+
clkSrcFreq=PLL3_Clocks.PLL3_R_Frequency;
457+
break;
423458
#endif
459+
default:
460+
Error_Handler();
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}
462+
#else
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Error_Handler();
464+
#endif
465+
}
424466
}
425467
#endif// I2C5_BASE
426468
#if defined(I2C6_BASE)
@@ -431,7 +473,38 @@ static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
431473
#else
432474
clkSrcFreq=HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_I2C46);
433475
#endif
476+
if (clkSrcFreq==0)
477+
#endif
478+
{
479+
#ifdef__HAL_RCC_GET_I2C6_SOURCE
480+
switch (__HAL_RCC_GET_I2C6_SOURCE()) {
481+
#ifdefRCC_I2C6CLKSOURCE_HSI
482+
caseRCC_I2C6CLKSOURCE_HSI:
483+
clkSrcFreq=HSI_VALUE;
484+
break;
485+
#endif
486+
#ifdefRCC_I2C6CLKSOURCE_SYSCLK
487+
caseRCC_I2C6CLKSOURCE_SYSCLK:
488+
clkSrcFreq=SystemCoreClock;
489+
break;
434490
#endif
491+
#ifdefRCC_I2C6CLKSOURCE_PCLK1
492+
caseRCC_I2C6CLKSOURCE_PCLK1:
493+
clkSrcFreq=HAL_RCC_GetPCLK1Freq();
494+
break;
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#endif
496+
#ifdefRCC_I2C6CLKSOURCE_MSIK
497+
caseRCC_I2C6CLKSOURCE_MSIK:
498+
clkSrcFreq=MSI_VALUE;
499+
break;
500+
#endif
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default:
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Error_Handler();
503+
}
504+
#else
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Error_Handler();
506+
#endif
507+
}
435508
}
436509
#endif// I2C6_BASE
437510
returnclkSrcFreq;

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