drivers: dac: stm32: add dac value range check
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>
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@ -68,6 +68,11 @@ static int dac_stm32_write_value(const struct device *dev,
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return -EINVAL;
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}
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if (value >= BIT(data->resolution)) {
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LOG_ERR("Value %d is out of range", value);
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return -EINVAL;
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}
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if (data->resolution == 8) {
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LL_DAC_ConvertData8RightAligned(cfg->base,
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table_channels[channel - STM32_FIRST_CHANNEL], value);
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