*/
#define ADC_PRESCALER (DIV_ROUNDUP(CPU_FREQ, 2 * CONFIG_ADC_CLOCK) - 1)
#define ADC_CLOCK (CPU_FREQ / ((ADC_PRESCALER + 1) * 2))
*/
#define ADC_PRESCALER (DIV_ROUNDUP(CPU_FREQ, 2 * CONFIG_ADC_CLOCK) - 1)
#define ADC_CLOCK (CPU_FREQ / ((ADC_PRESCALER + 1) * 2))