X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fao_adc.c;h=50f968488ab2ebf6b06257de3d2ab408967e99b7;hp=a8784667c52490fea86d48077c2b8e02d686c677;hb=e7dc7fab787df63a4de72c8450e94092eb04d7db;hpb=f57bea012d4fbca097df0d98fcd30eb4abd9701a

diff --git a/src/ao_adc.c b/src/ao_adc.c
index a8784667..50f96848 100644
--- a/src/ao_adc.c
+++ b/src/ao_adc.c
@@ -16,6 +16,7 @@
  */
 
 #include "ao.h"
+#include "ao_pins.h"
 
 volatile __xdata struct ao_adc	ao_adc_ring[AO_ADC_RING];
 volatile __data uint8_t		ao_adc_head;
@@ -46,12 +47,20 @@ ao_adc_isr(void) interrupt 1
 	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) {
+#if HAS_EXTERNAL_TEMP == 0
 		/* start next channel conversion */
-		ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
+		/* v0.2 replaces external temp sensor with internal one */
+		if (sequence == 1)
+			ADCCON3 = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
+		else
+#endif
+			ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
 	} else {
 		/* record this conversion series */
 		ao_adc_ring[ao_adc_head].tick = ao_time();
@@ -80,7 +89,9 @@ ao_adc_init(void)
 {
 	ADCCFG = ((1 << 0) |	/* acceleration */
 		  (1 << 1) |	/* pressure */
-		  (1 << 2) |	/* temperature */
+#if HAS_EXTERNAL_TEMP
+		  (1 << 2) |	/* v0.1 temperature */
+#endif
 		  (1 << 3) |	/* battery voltage */
 		  (1 << 4) |	/* drogue sense */
 		  (1 << 5));	/* main sense */