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hello_rtc
for Raspberry Pi Pico™ W, submitted by flashmypico

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/** * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. * * SPDX-License-Identifier: BSD-3-Clause */ #include <stdio.h> #include "hardware/rtc.h" #include "pico/stdlib.h" #include "pico/util/datetime.h" /// \tag::hello_rtc_main[] int main() { stdio_init_all(); printf("Hello RTC!\n"); char datetime_buf[256]; char *datetime_str = &datetime_buf[0]; // Start on Friday 5th of June 2020 15:45:00 datetime_t t = { .year = 2020, .month = 06, .day = 05, .dotw = 5, // 0 is Sunday, so 5 is Friday .hour = 15, .min = 45, .sec = 00 }; // Start the RTC rtc_init(); rtc_set_datetime(&t); // clk_sys is >2000x faster than clk_rtc, so datetime is not updated immediately when rtc_get_datetime() is called. // The delay is up to 3 RTC clock cycles (which is 64us with the default clock settings) sleep_us(64); // Print the time while (true) { rtc_get_datetime(&t); datetime_to_str(datetime_str, sizeof(datetime_buf), &t); printf("\r%s ", datetime_str); sleep_ms(100); } } /// \end::hello_rtc_main[]

This firmware image was imported from the pico-examples repository.

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Homepage: https://github.com/raspberrypi/pico-examples

Repository: https://github.com/raspberrypi/pico-examples/tree/master/rtc/hello_rtc

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