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authorKeith Packard <keithp@keithp.com>2014-01-15 12:40:26 -0800
committerKeith Packard <keithp@keithp.com>2014-01-15 12:40:26 -0800
commitc743eaa060080a7bd236466b93cff3abc96f405b (patch)
tree4a9228aa94fe0549dc0f11f8cd222da68bdb9c71 /src/telemetrum-v2.0
parentcc06242e882cba462791962c199b7c89e79adc65 (diff)
altos: Report battery, apogee and main voltages over APRS
This makes APRS more usable when you mute the RF audio on the HT. Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/telemetrum-v2.0')
-rw-r--r--src/telemetrum-v2.0/Makefile1
-rw-r--r--src/telemetrum-v2.0/ao_pins.h17
2 files changed, 18 insertions, 0 deletions
diff --git a/src/telemetrum-v2.0/Makefile b/src/telemetrum-v2.0/Makefile
index 0b9e6914..83a364dc 100644
--- a/src/telemetrum-v2.0/Makefile
+++ b/src/telemetrum-v2.0/Makefile
@@ -76,6 +76,7 @@ ALTOS_SRC = \
ao_eeprom_stm.c \
ao_report.c \
ao_convert_pa.c \
+ ao_convert_volt.c \
ao_log.c \
ao_log_metrum.c \
ao_sample.c \
diff --git a/src/telemetrum-v2.0/ao_pins.h b/src/telemetrum-v2.0/ao_pins.h
index 02f0f5e3..1b5cedc7 100644
--- a/src/telemetrum-v2.0/ao_pins.h
+++ b/src/telemetrum-v2.0/ao_pins.h
@@ -190,6 +190,23 @@ struct ao_adc {
#define AO_ADC_SQ4 AO_ADC_TEMP
/*
+ * Voltage divider on ADC battery sampler
+ */
+#define AO_BATTERY_DIV_PLUS 56 /* 5.6k */
+#define AO_BATTERY_DIV_MINUS 100 /* 10k */
+
+/*
+ * Voltage divider on ADC igniter samplers
+ */
+#define AO_IGNITE_DIV_PLUS 100 /* 100k */
+#define AO_IGNITE_DIV_MINUS 27 /* 27k */
+
+/*
+ * ADC reference in decivolts
+ */
+#define AO_ADC_REFERENCE_DV 33
+
+/*
* GPS
*/