diff options
| author | Keith Packard <keithp@keithp.com> | 2018-05-28 16:10:51 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2018-05-28 16:10:51 -0700 |
| commit | 42a261a56606be69b5fb90fd6017c70a1e5d72dd (patch) | |
| tree | 3972d6fa826d8c74527e0a0d194aff4e2d908d5a /src/telelco-v2.0/ao_pins.h | |
| parent | 3fb27f0ab7163c96945a60fd406e5423552206a2 (diff) | |
altos/telelco-v2.0: Display local batt voltage at startup
Show the battery voltage for a second at startup.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/telelco-v2.0/ao_pins.h')
| -rw-r--r-- | src/telelco-v2.0/ao_pins.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/telelco-v2.0/ao_pins.h b/src/telelco-v2.0/ao_pins.h index 73ce9d6c..4311bac8 100644 --- a/src/telelco-v2.0/ao_pins.h +++ b/src/telelco-v2.0/ao_pins.h @@ -357,4 +357,40 @@ #define AO_BUTTON_8_PORT &stm_gpioe #define AO_BUTTON_8 13 +/* ADC */ + +struct ao_adc { + int16_t v_batt; +}; + +#define AO_ADC_DUMP(p) \ + printf("batt: %5d\n", p.v_batt) + +#define HAS_ADC_TEMP 0 +#define HAS_BATTERY_REPORT 1 + +#define AO_ADC_V_BATT 0 +#define AO_ADC_V_BATT_PORT (&stm_gpioa) +#define AO_ADC_V_BATT_PIN 0 + +#define AO_ADC_RCC_AHBENR (1 << STM_RCC_AHBENR_GPIOAEN) + +#define AO_ADC_PIN0_PORT AO_ADC_V_BATT_PORT +#define AO_ADC_PIN0_PIN AO_ADC_V_BATT_PIN + +#define AO_ADC_SQ1 AO_ADC_V_BATT + +#define AO_NUM_ADC 1 + +/* + * Voltage divider on ADC battery sampler + */ +#define AO_BATTERY_DIV_PLUS 15 /* 15k */ +#define AO_BATTERY_DIV_MINUS 27 /* 27k */ + +/* + * ADC reference in decivolts + */ +#define AO_ADC_REFERENCE_DV 33 + #endif /* _AO_PINS_H_ */ |