uint8_t __xdata *a;
sequence = (ADCCON2 & ADCCON2_SCH_MASK) >> ADCCON2_SCH_SHIFT;
+ if (sequence == ADCCON3_ECH_TEMP)
+ sequence = 2;
a = (uint8_t __xdata *) (&ao_adc_ring[ao_adc_head].accel + sequence);
a[0] = ADCL;
a[1] = ADCH;
if (sequence < 5) {
/* start next channel conversion */
- sequence++;
- /* skip channel 2, we don't have a temp sensor on v0.2 */
- if (sequence == 2)
- sequence++;
- ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | sequence;
+ /* v0.2 replaces external temp sensor with internal one */
+ if (sequence == 1)
+ ADCCON3 = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
+ else
+ ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
} else {
/* record this conversion series */
ao_adc_ring[ao_adc_head].tick = ao_time();