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-rw-r--r--hw/thefreeman/avr32dd20-devkit/hwdef.c6
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;
}