Add wait for charging capacitance of ADC S/H
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@ -92,6 +92,7 @@ uint16_t battery_voltage(void)
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volatile uint16_t bat;
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volatile uint16_t bat;
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ADCSRA |= (1<<ADEN);
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ADCSRA |= (1<<ADEN);
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_delay_ms(1); // wait for charging S/H capacitance
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ADCSRA |= (1<<ADSC);
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ADCSRA |= (1<<ADSC);
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while (ADCSRA & (1<<ADSC)) ;
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while (ADCSRA & (1<<ADSC)) ;
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