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Fix incorrect time updating logic

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This commit is contained in:
Allen Hill
2026-05-06 13:57:36 -07:00
parent c904bc2c89
commit 18c5a28410
1 changed files with 11 additions and 13 deletions
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src/avclandrv.c
+11 -13
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@@ -275,26 +275,24 @@ void AVCLAN_init() {
/* Increment packed 2-digit BCD number.
WARNING: Overflow behavior is incorrect (e.g. `incBCD(0x99) != 0x00`) */
uint8_t incBCD(uint8_t data) {
if ((data & 0x9) == 0x9)
return (data + 7);
return (data + 1);
void incBCD(uint8_t *data) {
if ((*data & 0x9) == 0x9)
*data += 7;
else
*data += 1;
}
// Periodic interrupt with a 1 sec period
ISR(RTC_PIT_vect) {
if (CD_Mode == stPlay) {
uint8_t sec = *cd_Time_Sec;
uint8_t min = *cd_Time_Min;
sec = incBCD(sec);
if (sec == 0x60) {
if (*cd_Time_Sec == 0x59) {
*cd_Time_Sec = 0;
min = incBCD(min);
if (min == 0xA0) {
if (*cd_Time_Min == 0x99) {
*cd_Time_Min = 0;
}
}
} else
incBCD(cd_Time_Min);
} else
incBCD(cd_Time_Sec);
answerReq = cm_CDStatus;
}
RTC.PITINTFLAGS |= RTC_PI_bm;