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new sketch to demonstrate the RTC mode change
New application to demonstrate that changing the RTC mode from BIN to BCD does not affect the calendar nor Alarm. Signed-off-by: F. Ramu <[email protected]>
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| /* | ||
| change RTC mode from BCD --> MIX --> BIN | ||
| This sketch shows that changing the RTC mode does not affect the calendar | ||
| Configure the RTC, set an alarm, on alarm match change the RTC mode. | ||
| Creation 01 march 2024 | ||
| by Francois Ramu for STMicroelectronics | ||
| This example code is in the public domain. | ||
| https://github.com/stm32duino/STM32RTC | ||
| */ | ||
|
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| #include <STM32RTC.h> | ||
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| /* Get the rtc object */ | ||
| STM32RTC& rtc = STM32RTC::getInstance(); | ||
| bool rtc_mode_changed; | ||
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| void setup() | ||
| { | ||
| Serial.begin(115200); | ||
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| // Select RTC clock source: LSI_CLOCK, LSE_CLOCK or HSE_CLOCK. | ||
| rtc.setClockSource(STM32RTC::LSE_CLOCK); | ||
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| /* Configure the RTC mode */ | ||
| rtc.setBinaryMode(STM32RTC::MODE_BCD); | ||
| rtc_mode_changed = true; | ||
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| /* RTC mode is in BCD mode by default */ | ||
| rtc.begin(true, STM32RTC::HOUR_24); | ||
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| /* wait for a while */ | ||
| delay(500); | ||
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| // Set the calendar | ||
| rtc.setDate(01, 03, 24); | ||
| rtc.setTime(14, 02, 58); | ||
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| // Program ALARM A to change the RTC mode (set then enable) | ||
| rtc.attachInterrupt(alarmMatch); | ||
| rtc.setAlarmSeconds(5, STM32RTC::ALARM_A); | ||
| rtc.enableAlarm(rtc.MATCH_SS, STM32RTC::ALARM_A); | ||
| } | ||
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| void loop() | ||
| { | ||
| /* Reports the RTC mode when it has been changed */ | ||
| if (rtc_mode_changed) { | ||
| if (rtc.getBinaryMode() == STM32RTC::MODE_BCD) { | ||
| Serial.printf("RTC mode is MODE_BCD at "); | ||
| } else if (rtc.getBinaryMode() == STM32RTC::MODE_MIX) { | ||
| Serial.printf("RTC mode is MODE_MIX at "); | ||
| } else { | ||
| Serial.printf("RTC mode is MODE_BIN at "); | ||
| } | ||
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| Serial.printf("%02d/%02d/%02d - ", rtc.getDay(), rtc.getMonth(), rtc.getYear()); | ||
| Serial.printf("%02d:%02d:%02d \n", rtc.getHours(), rtc.getMinutes(), rtc.getSeconds()); | ||
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| rtc_mode_changed = false; | ||
| } | ||
| } | ||
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| void alarmMatch(void *data) | ||
| { | ||
| UNUSED(data); | ||
| Serial.printf("Alarm A Match! : change RTC mode at "); | ||
| Serial.printf("%02d:%02d:%02d \n", rtc.getHours(), rtc.getMinutes(), rtc.getSeconds()); | ||
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| /* Configure the new RTC mode */ | ||
| if (rtc.getBinaryMode() == STM32RTC::MODE_BCD) { | ||
| rtc.setBinaryMode(STM32RTC::MODE_MIX); | ||
| } else if (rtc.getBinaryMode() == STM32RTC::MODE_MIX) { | ||
| rtc.setBinaryMode(STM32RTC::MODE_BIN); | ||
| } else { | ||
| rtc.setBinaryMode(STM32RTC::MODE_BCD); | ||
| } | ||
| rtc_mode_changed = true; | ||
| } |