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/*
* Copyright (C) 2016 by Daniel Friesel
*
* License: You may use, redistribute and/or modify this file under the terms
* of either:
* * The GNU LGPL v3 (see COPYING and COPYING.LESSER), or
* * The 3-clause BSD License (see COPYING.BSD)
*
*/
#include <stdlib.h>
#define SHUTDOWN_THRESHOLD 2048
/**
* Contains the system idle loop. Checks for button presses, handles
* standby/resume, reads data from the Modem and updates the Display.
*/
class System {
private:
uint16_t want_shutdown;
uint8_t btn_debounce;
uint8_t current_anim_no;
void shutdown(void);
void receive(void);
void loadPattern(uint8_t pattern_no);
void loadPattern_buf(uint8_t *pattern);
void loadPattern_P(const uint8_t *pattern_ptr);
enum TransmissionControl : uint8_t {
BYTE_END = 0x84,
BYTE_START = 0x99,
BYTE_PATTERN = 0xa9,
};
enum ButtonMask : uint8_t {
BUTTON_NONE = 0,
BUTTON_LEFT = 1,
BUTTON_RIGHT = 2,
BUTTON_BOTH = 3
};
enum RxExpect : uint8_t {
START1,
START2,
NEXT_BLOCK,
PATTERN1,
PATTERN2,
HEADER1,
HEADER2,
META1,
META2,
DATA_FIRSTBLOCK,
DATA,
};
RxExpect rxExpect;
ButtonMask btnMask;
public:
System() { want_shutdown = 0; rxExpect = START1; current_anim_no = 0; btnMask = BUTTON_NONE; btn_debounce = 0;};
/**
* Initial MCU setup. Turns off unused peripherals to save power
* and configures the button pins. Also configures all other pins
* and peripherals using the enable function of their respective
* classes. Turns on interrupts once that's done.
*/
void initialize(void);
/**
* System idle loop. Checks for button presses, handles
* standby/resume, reads data from the Modem and updates the Display.
*
* It is recommended to run this function before going back to sleep
* whenever the system is woken up by an interrupt.
*/
void loop(void);
/**
* Resets the modem receive state machine and loads the
* "Transmission error" message. Called by the Watchdog Timeout
* ISR when a transmission was started (2x START received) but not
* properly finished (that is, four seconds passed since the last
* received byte and END byte was receveid).
*/
void handleTimeout(void);
};
extern System rocket;
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