diff --git a/examples/AlarmTimedWakeup/AlarmTimedWakeup.ino b/examples/AlarmTimedWakeup/AlarmTimedWakeup.ino index b64b097..59ea702 100644 --- a/examples/AlarmTimedWakeup/AlarmTimedWakeup.ino +++ b/examples/AlarmTimedWakeup/AlarmTimedWakeup.ino @@ -1,9 +1,11 @@ /* - AdvancedTimedWakeup + AlarmTimedWakeup - This sketch demonstrates the usage of Internal Interrupts to wakeup a chip in deep sleep mode. + This sketch demonstrates the usage of Internal Interrupts to wakeup a chip in deep sleep mode, + when the RTC is configured in BCD or MIX mode (BCD and BINARY) In this sketch: + - RTC is configured in BCD (default) or MIX mode (BCD and BINARY) - RTC date and time are configured. - Alarm is set to wake up the processor each 'atime' and called a custom alarm callback which increment a value and reload alarm with 'atime' offset. @@ -19,7 +21,7 @@ STM32RTC& rtc = STM32RTC::getInstance(); /* Change this value to set alarm match offset in millisecond */ /* Note that STM32F1xx does not manage subsecond only second */ -static uint32_t atime = 567; +static uint32_t atime = 600; // Declare it volatile since it's incremented inside an interrupt volatile int alarmMatch_counter = 0; @@ -35,21 +37,32 @@ static byte month = 1; static byte year = 18; void setup() { +#if defined(RTC_BINARY_NONE) + // Select RTC clock source: LSI_CLOCK, LSE_CLOCK or HSE_CLOCK. + // By default the LSI is selected as source. + // rtc.setClockSource(STM32RTC::LSE_CLOCK); + // Select the STM32RTC::MODE_BCD or STM32RTC::MODE_MIX + // By default the STM32RTC::MODE_BCD is selected. + // rtc.setBinaryMode(STM32RTC::MODE_BCD); + rtc.begin(true); /* reset the RTC else the binary mode is not changed */ +#else rtc.begin(); +#endif /* RTC_BINARY_NONE */ rtc.setTime(hours, minutes, seconds); rtc.setDate(weekDay, day, month, year); pinMode(LED_BUILTIN, OUTPUT); - Serial.begin(9600); + Serial.begin(115200); while (!Serial) {} + Serial.println(" Start !"); // Configure low power LowPower.begin(); LowPower.enableWakeupFrom(&rtc, alarmMatch, &atime); // Configure first alarm in 2 second then it will be done in the rtc callback - rtc.setAlarmEpoch( rtc.getEpoch() + 2); + rtc.setAlarmEpoch(rtc.getEpoch() + 2); } void loop() { @@ -63,8 +76,7 @@ void loop() { LowPower.deepSleep(); } -void alarmMatch(void* data) -{ +void alarmMatch(void* data) { // This function will be called once on device wakeup // You can do some little operations here (like changing variables which will be used in the loop) // Remember to avoid calling delay() and long running functions since this functions executes in interrupt context @@ -91,7 +103,7 @@ void alarmMatch(void* data) //Update epoch_ms - might need to add a second to epoch epoc_ms += _millis; if (epoc_ms >= 1000) { - sec ++; + sec++; epoc_ms -= 1000; } #endif diff --git a/examples/binAlarmTimedWakeup/binAlarmTimedWakeup.ino b/examples/binAlarmTimedWakeup/binAlarmTimedWakeup.ino new file mode 100644 index 0000000..bd2b55e --- /dev/null +++ b/examples/binAlarmTimedWakeup/binAlarmTimedWakeup.ino @@ -0,0 +1,76 @@ +/* + binAlarmTimedWakeup + + This sketch demonstrates the usage of Internal Interrupts to wakeup a chip in deep sleep mode. + when the RTC is configured in BINary mode (BIN_ONLY) + + In this sketch: + - RTC in BINARY only for the stm32 that supports this mode + - Alarm is set to wake up the processor each 'atime' and called a custom alarm callback + which increment a value and reload alarm with 'atime' offset. + + This example code is in the public domain. +*/ + +#include "STM32LowPower.h" +#include + +/* Get the rtc object */ +STM32RTC& rtc = STM32RTC::getInstance(); + +/* Change this value to set alarm match offset in millisecond */ +static uint32_t atime = 600; +static uint32_t time_ts; /* value to get the binary time */ + +// Declare it volatile since it's incremented inside an interrupt +volatile int alarmMatch_counter = 0; + +void setup() { + // Select RTC clock source: LSI_CLOCK, LSE_CLOCK or HSE_CLOCK. + // By default the LSI is selected as source. + // rtc.setClockSource(STM32RTC::LSE_CLOCK); + // Select the STM32RTC::MODE_BIN + rtc.setBinaryMode(STM32RTC::MODE_BIN); + rtc.begin(true); /* reset the RTC else the mode is not changed */ + + pinMode(LED_BUILTIN, OUTPUT); + + Serial.begin(115200); + while (!Serial) {} + Serial.println(" Start !"); + + // Configure low power + LowPower.begin(); + LowPower.enableWakeupFrom(&rtc, alarmMatch, &atime); + + rtc.getEpoch(&time_ts); + + // Configure first alarm in 2 seconds then it will be done in the rtc callback + rtc.setAlarmEpoch(0, STM32RTC::MATCH_SUBSEC, (time_ts + 2000), STM32RTC::ALARM_A); +} + +void loop() { + Serial.print("Alarm Match: "); + Serial.print(alarmMatch_counter); + Serial.println(" times."); + Serial.flush(); + digitalWrite(LED_BUILTIN, HIGH); + LowPower.deepSleep(); + digitalWrite(LED_BUILTIN, LOW); + LowPower.deepSleep(); +} + +void alarmMatch(void* data) { + // This function will be called once on device wakeup + // You can do some little operations here (like changing variables which will be used in the loop) + // Remember to avoid calling delay() and long running functions since this functions executes in interrupt context + uint32_t _millis = 1000; + + if (data != NULL) { + _millis = *(uint32_t*)data; + } + + rtc.getEpoch(&time_ts); + alarmMatch_counter++; + rtc.setAlarmEpoch(0, STM32RTC::MATCH_SUBSEC, (time_ts + _millis), STM32RTC::ALARM_A); +}