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arch/arm/stm32h5: Fix ADC internal channel configuration.

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Properly configure internal channels on STM32H5 ADC when selected

Signed-off-by: Tyler Bennett <tbennett@2g-eng.com>
This commit is contained in:
Joshua Lange 2025-04-14 14:46:12 -05:00 • committed by Xiang Xiao
parent dd53c34722
commit 78f35c836c
1 changed files with 30 additions and 17 deletions
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47
arch/arm/src/stm32h5/stm32_adc.c
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@ -100,8 +100,6 @@
(ADC_SMPR_DEFAULT << ADC_SMPR2_SMP18_SHIFT) | \
(ADC_SMPR_DEFAULT << ADC_SMPR2_SMP19_SHIFT))
#define ADC_EXTERNAL_CHAN_MAX 18
/****************************************************************************
* Private Types
****************************************************************************/
@ -983,27 +981,42 @@ static bool adc_internal(struct stm32_dev_s * priv, uint32_t *adc_ccr)
int i;
bool internal = false;
if (priv->intf == 3)
if (priv->intf == 1)
{
for (i = 0; i < priv->nchannels; i++)
{
if (priv->chanlist[i] > ADC_EXTERNAL_CHAN_MAX)
switch (priv->chanlist[i])
{
case 16:
*adc_ccr |= ADC_CCR_TSEN;
internal = true;
break;
case 17:
*adc_ccr |= ADC_CCR_VREFEN;
internal = true;
break;
}
}
}
else if (priv->intf == 2)
{
for (i = 0; i < priv->nchannels; i++)
{
switch (priv->chanlist[i])
{
internal = true;
switch (priv->chanlist[i])
{
case 17:
*adc_ccr |= ADC_CCR_VBATEN;
break;
case 16:
*adc_ccr |= ADC_CCR_VBATEN;
internal = true;
break;
case 18:
*adc_ccr |= ADC_CCR_TSEN;
break;
case 17:
case 19:
*adc_ccr |= ADC_CCR_VREFEN;
break;
}
/* Measuring VDDCORE requires option bit to be set */
adc_putreg(priv, STM32_ADC_OR_OFFSET, ADC_OR_OP0);
internal = true;
break;
}
}
}