unsigned int io_read_analog(unsigned char port)
{
unsigned int result;
unsigned char channel;
#ifndef SDCC
static unsigned char inputs[] = {
ADC_CH0, ADC_CH1, ADC_CH2, ADC_CH3,
ADC_CH4, ADC_CH5, ADC_CH6, ADC_CH7,
ADC_CH8, ADC_CH9, ADC_CH10, ADC_CH11,
ADC_CH12, ADC_CH13, ADC_CH14, ADC_CH15 };
#endif
/* Make sure port does not exceed current Analog_ports */
if ( ! VALID_ANALOG_PORT(port) )
return OV_BAD_PARAM;
#ifdef SDCC
result = 0;
channel = port - 1;
/*
* SDCC generic adc_open() doesn't work for the 8520. Lots of
* stuff missing.
*/
adc_open8520(channel);
/* Allow settling time before starting a conversion */
delay10tcy(10);
adc_conv();
while ( adc_busy() )
;
result = adc_read();
adc_close();
#else /* MCC18 */
channel = inputs[port - 1];
OpenADC(ADC_FOSC_RC & ADC_RIGHT_JUST & Analog_ports_const,
channel & ADC_INT_OFF & ADC_VREFPLUS_VDD & ADC_VREFMINUS_VSS);
Delay10TCYx(10);
ConvertADC();
while (BusyADC())
;
ReadADC();
CloseADC();
result = (unsigned int)ADRESH << 8 | ADRESL;
#endif
return result;
}
uint16_t analog_get(index_t index)
{
if (IX_ANALOG(1) <= index && index <= IX_ANALOG(USER_CT_ANALOG) && NUM_ANALOG_VALID(USER_CT_ANALOG)) {
/* Read ADC (0b10000111 = 0x87). */
uint8_t chan = 0x87 | (IX_ANALOG_INV(index) << 3);
adc_setchannel(chan);
delay10tcy(5); /* Wait for capacitor to charge */
adc_conv();
while(adc_busy());
return adc_read();
} else {
WARN_IX(index);
return 0;
}
}
void init_user(){
uint8_t i;
init_display();
TRISBbits.TRISB2 = 1;
// SDCC is missing the TRISA7 bit in the define...
#if 0
TRISAbits.TRISA0 = 1;
TRISAbits.TRISA6 = 1;
TRISAbits.TRISA7 = 1;
#else
TRISA = TRISA | b(11010001);
#endif
// Setup pwm and adc for the led brightness control
ADCON0 = b(00000001);
ADCON1 = b(01111110);
ADCON2 = b(00000000);
CCP1CON = b(00001100);
PR2 = 0xFF;
T2CON = b(00000100);
CCPR1L = 0x00;
debounce_init(hours_debounce,hours_switch_raw);
debounce_init(mins_debounce,mins_switch_raw);
debounce_init(secs_debounce,secs_switch_raw);
if (!hours_switch_raw && !mins_switch_raw && secs_switch_raw){
mode = fast_clock;
} else if (hours_switch_raw && !mins_switch_raw && !secs_switch_raw){
mode = slow_clock;
} else if (!hours_switch_raw && mins_switch_raw && !secs_switch_raw){
// Oooh! Metrics display mode! Don't see that very often...
inc_metric_meta();
// Basically just cycle through the bytes in the eeprom and display them on
// screen forever.
i = 0;
while (1){
display_digits(
i / 16,i % 16,
CHAR_BLANK,CHAR_BLANK,
(((uint8_t *)(&eeprom_data))[i] / 16),
((uint8_t *)(&eeprom_data))[i] % 16);
delay10tcy(1);
if (debounce_just_pressed(hours_debounce,hours_switch_raw)){
i++;
if (i >= sizeof(eeprom_data))
i = 0;
}
if (debounce_just_pressed(secs_debounce,secs_switch_raw)){
i--;
if (i >= sizeof(eeprom_data))
i = sizeof(eeprom_data) - 1;
}
debounce_add_sample(hours_debounce,hours_switch_raw);
debounce_add_sample(secs_debounce,secs_switch_raw);
}
} else {
mode = none_chosen;
}
if (mode == none_chosen){
mode = eeprom_read_uint32(EEPROM_ADDR_MODE);
} else {
eeprom_write_uint32(mode,EEPROM_ADDR_MODE);
trigger_save_eeprom();
}
silly_hour_display = eeprom_read_uint32(EEPROM_ADDR_SILLY_HOUR_DISPLAY);
}