Fork of the espurna firmware for `mhsw` switches
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/*
SYSTEM MODULE
Copyright (C) 2018 by Xose Pérez <xose dot perez at gmail dot com>
*/
#include <EEPROM.h>
// -----------------------------------------------------------------------------
unsigned long _loop_delay = 0;
bool _system_send_heartbeat = false;
// Calculated load average 0 to 100;
unsigned short int _load_average = 100;
// -----------------------------------------------------------------------------
#if SYSTEM_CHECK_ENABLED
// Call this method on boot with start=true to increase the crash counter
// Call it again once the system is stable to decrease the counter
// If the counter reaches SYSTEM_CHECK_MAX then the system is flagged as unstable
// setting _systemOK = false;
//
// An unstable system will only have serial access, WiFi in AP mode and OTA
bool _systemStable = true;
void systemCheck(bool stable) {
unsigned char value = EEPROM.read(EEPROM_CRASH_COUNTER);
if (stable) {
value = 0;
DEBUG_MSG_P(PSTR("[MAIN] System OK\n"));
} else {
if (++value > SYSTEM_CHECK_MAX) {
_systemStable = false;
value = 0;
DEBUG_MSG_P(PSTR("[MAIN] System UNSTABLE\n"));
}
}
EEPROM.write(EEPROM_CRASH_COUNTER, value);
EEPROM.commit();
}
bool systemCheck() {
return _systemStable;
}
void systemCheckLoop() {
static bool checked = false;
if (!checked && (millis() > SYSTEM_CHECK_TIME)) {
// Check system as stable
systemCheck(true);
checked = true;
}
}
#endif
// -----------------------------------------------------------------------------
void systemSendHeartbeat() {
_system_send_heartbeat = true;
}
unsigned long systemLoopDelay() {
return _loop_delay;
}
unsigned long systemLoadAverage() {
return _load_average;
}
void systemLoop() {
// -------------------------------------------------------------------------
// Check system stability
// -------------------------------------------------------------------------
#if SYSTEM_CHECK_ENABLED
systemCheckLoop();
#endif
// -------------------------------------------------------------------------
// Heartbeat
// -------------------------------------------------------------------------
#if HEARTBEAT_ENABLED
// Heartbeat
static unsigned long last_hbeat = 0;
if (_system_send_heartbeat || (last_hbeat == 0) || (millis() - last_hbeat > HEARTBEAT_INTERVAL)) {
_system_send_heartbeat = false;
last_hbeat = millis();
heartbeat();
}
#endif // HEARTBEAT_ENABLED
// -------------------------------------------------------------------------
// Load Average calculation
// -------------------------------------------------------------------------
static unsigned long last_loadcheck = 0;
static unsigned long load_counter_temp = 0;
load_counter_temp++;
if (millis() - last_loadcheck > LOADAVG_INTERVAL) {
static unsigned long load_counter = 0;
static unsigned long load_counter_max = 1;
load_counter = load_counter_temp;
load_counter_temp = 0;
if (load_counter > load_counter_max) {
load_counter_max = load_counter;
}
_load_average = 100 - (100 * load_counter / load_counter_max);
last_loadcheck = millis();
}
// -------------------------------------------------------------------------
// Power saving delay
// -------------------------------------------------------------------------
delay(_loop_delay);
}
void _systemSetupSpecificHardware() {
//The ESPLive has an ADC MUX which needs to be configured.
#if defined(MANCAVEMADE_ESPLIVE)
pinMode(16, OUTPUT);
digitalWrite(16, HIGH); //Defualt CT input (pin B, solder jumper B)
#endif
// These devices use the hardware UART
// to communicate to secondary microcontrollers
#if defined(ITEAD_SONOFF_RFBRIDGE) || defined(ITEAD_SONOFF_DUAL) || defined(STM_RELAY)
Serial.begin(SERIAL_BAUDRATE);
#endif
}
void systemSetup() {
EEPROM.begin(EEPROM_SIZE);
#if SPIFFS_SUPPORT
SPIFFS.begin();
#endif
// Question system stability
#if SYSTEM_CHECK_ENABLED
systemCheck(false);
#endif
// Init device-specific hardware
_systemSetupSpecificHardware();
// Cache loop delay value to speed things (recommended max 250ms)
_loop_delay = atol(getSetting("loopDelay", LOOP_DELAY_TIME).c_str());
_loop_delay = constrain(_loop_delay, 0, 300);
// Register Loop
espurnaRegisterLoop(systemLoop);
}