uint16_t hardware_analogRead(uint8_t ch)
{
uint32_t buf = 0;
// Initialize the ADC driver before first use
ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32);
// Must setup the ADC channel to read beforehand
if(ch < 15)
ADC_SetupChannel(ch);
if(ch > 7)
ch = (1 << 8 | ((ch - 8) << MUX0));
else
ch = ch << MUX0;
// Perform a single conversion of the ADC channel 1
// buf = ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ch);
// Start reading ADC channel 1 in free running (continuous conversion) mode
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ch);
for(uint8_t i = 0; i < ADC_READINGS; i++)
{
while (!(ADC_IsReadingComplete()));
buf += ADC_GetResult();
}
// Leave ADC Disabled to save power
ADC_Disable();
return (uint16_t)(buf / ADC_READINGS);
}
void ButtonStates(void) {
uint16_t port, result;
char buffer[64];
PORTD = 0b11111111;
/*for (int i=0; i<4; i++) {
if (i > 1) {
PORTC = (i%1 == 0) ? 0b01000000 : 0b10000000;
} else {
PORTB = (i%1 == 0) ? 0b01000000 : 0b10000000;
}
*/
// TODO: dry this up
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL0);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "4,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL1);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "0,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL4);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "1,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL5);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "2,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL6);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "3,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL12);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "7,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL13);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "6,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_LEFT_ADJUSTED | ADC_CHANNEL7);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, "5,%d\n", ADC_GetResult());
fputs(buffer, &USBSerialStream);
/*
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_CHANNEL5);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, " %d", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_CHANNEL6);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, " %d", ADC_GetResult());
fputs(buffer, &USBSerialStream);
ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_CHANNEL7);
while(!(ADC_IsReadingComplete())) {}
sprintf(buffer, " %d", ADC_GetResult());
fputs(buffer, &USBSerialStream);
PORTB = 0;
PORTC = 0;
//}
*/
}
