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Broadcom port: Add 'fake' RTC support #7474

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Jan 25, 2023
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58 changes: 58 additions & 0 deletions ports/broadcom/common-hal/rtc/RTC.c
Original file line number Diff line number Diff line change
@@ -0,0 +1,58 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Nick Moore for Adafruit Industries
* Copyright (c) 2019 Artur Pacholec
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#include <stdlib.h>

#include "py/obj.h"
#include "py/runtime.h"
#include "shared/timeutils/timeutils.h"
#include "supervisor/port.h"

// This is the time in seconds since 2000 that the RTC was started.
// TODO: Change the offset to ticks so that it can be a subsecond adjustment.
static uint32_t rtc_offset = 0;

void common_hal_rtc_get_time(timeutils_struct_time_t *tm) {
uint64_t ticks_s = port_get_raw_ticks(NULL) / 1024;
timeutils_seconds_since_2000_to_struct_time(rtc_offset + ticks_s, tm);
}

void common_hal_rtc_set_time(timeutils_struct_time_t *tm) {
uint64_t ticks_s = port_get_raw_ticks(NULL) / 1024;
uint32_t epoch_s = timeutils_seconds_since_2000(
tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec
);
rtc_offset = epoch_s - ticks_s;
}

int common_hal_rtc_get_calibration(void) {
return 0;
}

void common_hal_rtc_set_calibration(int calibration) {
mp_raise_NotImplementedError_varg(translate("%q"), MP_QSTR_calibration);
}
33 changes: 33 additions & 0 deletions ports/broadcom/common-hal/rtc/RTC.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Noralf Trønnes
* Copyright (c) 2019 Artur Pacholec
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#ifndef MICROPY_INCLUDED_BROADCOM_COMMON_HAL_RTC_RTC_H
#define MICROPY_INCLUDED_BROADCOM_COMMON_HAL_RTC_RTC_H

extern void rtc_reset(void);

#endif // MICROPY_INCLUDED_BROADCOM_COMMON_HAL_RTC_RTC_H
Empty file.
1 change: 0 additions & 1 deletion ports/broadcom/mpconfigport.mk
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,6 @@ CIRCUITPY_PARALLELDISPLAY = 0
CIRCUITPY_PULSEIO = 0
CIRCUITPY_PWMIO = 0
CIRCUITPY_ROTARYIO = 0
CIRCUITPY_RTC = 0

CIRCUITPY_SDIOIO = 1
CIRCUITPY_VIDEOCORE = 1
Expand Down
2 changes: 1 addition & 1 deletion ports/broadcom/supervisor/port.c
Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@

#include "genhdr/mpversion.h"

// #include "common-hal/rtc/RTC.h"
#include "common-hal/rtc/RTC.h"
#include "common-hal/busio/I2C.h"
#include "common-hal/busio/SPI.h"
#include "common-hal/busio/UART.h"
Expand Down