pcf8523: RTC driver

2026-08-16 21:03:23 +00:00 · 2023-09-18 22:38:00 +02:00
parent 5888bb2ded
commit cfa50fd3c2
5 changed files with 254 additions and 0 deletions
@@ -0,0 +1,39 @@
+package pcf8523
+
+const DefaultAddress = 0x68
+
+// datasheet 8.5 Power management functions, table 11
+type PowerManagement byte
+
+const (
+	PowerManagement_SwitchOver_ModeStandard_LowDetection PowerManagement = 0b000
+	PowerManagement_SwitchOver_ModeDirect_LowDetection   PowerManagement = 0b001
+	PowerManagement_VddOnly_LowDetection                 PowerManagement = 0b010
+	PowerManagement_SwitchOver_ModeStandard              PowerManagement = 0b100
+	PowerManagement_SwitchOver_ModeDirect                PowerManagement = 0b101
+	PowerManagement_VddOnly                              PowerManagement = 0b101
+)
+
+// constants for all internal registers
+const (
+	rControl1               = 0x00 // Control_1
+	rControl2               = 0x01 // Control_2
+	rControl3               = 0x02 // Control_3
+	rSeconds                = 0x03 // Seconds
+	rMinutes                = 0x04 // Minutes
+	rHours                  = 0x05 // Hours
+	rDays                   = 0x06 // Days
+	rWeekdays               = 0x07 // Weekdays
+	rMonths                 = 0x08 // Months
+	rYears                  = 0x09 // Years
+	rMinuteAlarm            = 0x0A // Minute_alarm
+	rHourAlarm              = 0x0B // Hour_alarm
+	rDayAlarm               = 0x0C // Day_alarm
+	rWeekdayAlarm           = 0x0D // Weekday_alarm
+	rOffset                 = 0x0E // Offset
+	rTimerClkoutControl     = 0x0F // Tmr_CLKOUT_ctrl
+	rTimerAFrequencyControl = 0x10 // Tmr_A_freq_ctrl
+	rTimerARegister         = 0x11 // Tmr_A_reg
+	rTimerBFrequencyControl = 0x12 // Tmr_B_freq_ctrl
+	rTimerBRegister         = 0x13 // Tmr_B_reg
+)