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drivers: dac: stm32: add dac value range check

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Compare value and DAC resolution in `dac_write_value` and return -EINVAL
if the value is above supported resolution.

Signed-off-by: Jeppe Odgaard <jeppe.odgaard@prevas.dk>
This commit is contained in:
Jeppe Odgaard 2024-02-14 10:44:40 +01:00 committed by Alberto Escolar
parent 004b307206
commit 398d297519
1 changed files with 5 additions and 0 deletions
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5
drivers/dac/dac_stm32.c
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@ -68,6 +68,11 @@ static int dac_stm32_write_value(const struct device *dev,
return -EINVAL; return -EINVAL;
} }
if (value >= BIT(data->resolution)) {
LOG_ERR("Value %d is out of range", value);
return -EINVAL;
}
if (data->resolution == 8) { if (data->resolution == 8) {
LL_DAC_ConvertData8RightAligned(cfg->base, LL_DAC_ConvertData8RightAligned(cfg->base,
table_channels[channel - STM32_FIRST_CHANNEL], value); table_channels[channel - STM32_FIRST_CHANNEL], value);