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| author | Selene ToyKeeper | 2024-03-27 07:13:26 -0600 |
|---|---|---|
| committer | Selene ToyKeeper | 2024-03-27 07:13:26 -0600 |
| commit | 7b49797be1da97f54e9df3a1b0342ab20d7f02d5 (patch) | |
| tree | 1aab20b6979c781419fc61c8be73facf332ad8e2 /hw/thefreeman/avr32dd20-devkit/hwdef.c | |
| parent | fixed inaccurate comment (thanks to xikteny for spotting it) (diff) | |
| download | anduril-7b49797be1da97f54e9df3a1b0342ab20d7f02d5.tar.gz anduril-7b49797be1da97f54e9df3a1b0342ab20d7f02d5.tar.bz2 anduril-7b49797be1da97f54e9df3a1b0342ab20d7f02d5.zip | |
increased voltage precision from 0.025V to 0.02V
(so 0 to 255 now goes from 0.00V to 5.10V)
Diffstat (limited to 'hw/thefreeman/avr32dd20-devkit/hwdef.c')
| -rw-r--r-- | hw/thefreeman/avr32dd20-devkit/hwdef.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/hw/thefreeman/avr32dd20-devkit/hwdef.c b/hw/thefreeman/avr32dd20-devkit/hwdef.c index 460082f..5b534d2 100644 --- a/hw/thefreeman/avr32dd20-devkit/hwdef.c +++ b/hw/thefreeman/avr32dd20-devkit/hwdef.c @@ -119,13 +119,13 @@ bool gradual_tick_main(uint8_t gt) { uint8_t voltage_raw2cooked(uint16_t measurement) { // In : 65535 * BATTLVL / 1.024V - // Out: uint8_t: Vbat * 40 + // Out: uint8_t: Vbat * 50 // BATTLVL = Vbat * (100.0/(330+100)) = Vbat / 4.3 - // So, Out = In * 4.3 / 1600 + // So, Out = In * 4.3 / 1280 // (plus a bit of fudging to fix the slope and offset, // based on measuring actual hardware) uint8_t result = (uint32_t)(measurement + (65535 * 4 / 1024)) - * 43 / 16128; + * 43 / 12880; return result; } |