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| author | Selene ToyKeeper | 2020-03-16 04:13:55 -0600 |
|---|---|---|
| committer | Selene ToyKeeper | 2020-03-16 04:13:55 -0600 |
| commit | 227b54b1095e47ae9d0ab4b4c2a49862fd708559 (patch) | |
| tree | 721f7bfce0a0c310ea0cff79b73e720aee692368 /spaghetti-monster/fsm-adc.c | |
| parent | merged fsm branch (to get adc-rework branch with new thermal regulation) (diff) | |
| download | anduril-227b54b1095e47ae9d0ab4b4c2a49862fd708559.tar.gz anduril-227b54b1095e47ae9d0ab4b4c2a49862fd708559.tar.bz2 anduril-227b54b1095e47ae9d0ab4b4c2a49862fd708559.zip | |
fixed calc_voltage_divider() (use 10-bit calibration values, not 8-bit)
Diffstat (limited to '')
| -rw-r--r-- | spaghetti-monster/fsm-adc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/spaghetti-monster/fsm-adc.c b/spaghetti-monster/fsm-adc.c index 7880238..e7b7feb 100644 --- a/spaghetti-monster/fsm-adc.c +++ b/spaghetti-monster/fsm-adc.c @@ -112,7 +112,7 @@ inline void ADC_off() { #ifdef USE_VOLTAGE_DIVIDER static inline uint8_t calc_voltage_divider(uint16_t value) { // use 9.7 fixed-point to get sufficient precision - uint16_t adc_per_volt = ((ADC_44<<7) - (ADC_22<<7)) / (44-22); + uint16_t adc_per_volt = ((ADC_44<<5) - (ADC_22<<5)) / (44-22); // shift incoming value into a matching position uint8_t result = ((value>>1) / adc_per_volt) + VOLTAGE_FUDGE_FACTOR; return result; |