Max Regan
a7f1ffc1b5
The display currently shows the time, with hours and minutes, and is capable of receiving input with buttons (though does nothing). It sleeps during intervals where nothing is happening. The display task runs once per second, and RTC alarm A is used for periodic alarms to update the system time.
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2019 Max Regan
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "SystemTime.h"
|
|
#include "ReturnCode.h"
|
|
#include "Time.h"
|
|
|
|
#include "stm32l0xx.h"
|
|
|
|
namespace BSP {
|
|
|
|
struct time_bcd {
|
|
uint8_t hour_tens;
|
|
uint8_t hour_ones;
|
|
uint8_t minute_tens;
|
|
uint8_t minute_ones;
|
|
uint8_t second_tens;
|
|
uint8_t second_ones;
|
|
bool pm;
|
|
};
|
|
|
|
class RtcDriver {
|
|
public:
|
|
|
|
RtcDriver() = delete;
|
|
~RtcDriver() = delete;
|
|
|
|
static SystemTimerImpl& get_system_timer() {
|
|
return m_sys_timer;
|
|
};
|
|
static Common::ReturnCode init();
|
|
static void increment_seconds();
|
|
static Common::ReturnCode get_time(time_bcd &tm_bcd);
|
|
static Common::ReturnCode set_wakeup_in(Common::time_t wakeup_delay);
|
|
|
|
private:
|
|
|
|
static Common::ReturnCode init_hw();
|
|
static void enable_rtc_write();
|
|
static void disable_rtc_write();
|
|
static void enable_rtc_wakeup_interrupt();
|
|
static void enable_periodic_alarm();
|
|
|
|
static constexpr uint32_t LSE_CLOCK_FREQ = 32768;
|
|
|
|
static RTC_TypeDef *m_rtc;
|
|
|
|
class RtcSystemTimer : public BSP::SystemTimerImpl {
|
|
public:
|
|
|
|
RtcSystemTimer()
|
|
: m_seconds(0)
|
|
{}
|
|
|
|
~RtcSystemTimer() {}
|
|
|
|
Common::time_t get_time() override;
|
|
void increment_seconds();
|
|
|
|
private:
|
|
/** I'll be dead before this rolls over */
|
|
/** FIXME FIXME FIXME: XXX This should be an atomic */
|
|
uint32_t m_seconds;
|
|
|
|
static constexpr uint32_t LSE_CLOCK_FREQ = 32768;
|
|
};
|
|
|
|
static RtcSystemTimer m_sys_timer;
|
|
};
|
|
|
|
}
|