Fork of the espurna firmware for `mhsw` switches
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/*
UTILS MODULE
Copyright (C) 2017-2018 by Xose Pérez <xose dot perez at gmail dot com>
*/
#include <Ticker.h>
Ticker _defer_reset;
String getIdentifier() {
char buffer[20];
snprintf_P(buffer, sizeof(buffer), PSTR("%s_%06X"), APP_NAME, ESP.getChipId());
return String(buffer);
}
void setBoardName() {
#ifndef ESPURNA_CORE
setSetting("boardName", DEVICE_NAME);
#endif
}
String getBoardName() {
return getSetting("boardName", DEVICE_NAME);
}
String getCoreVersion() {
String version = ESP.getCoreVersion();
#ifdef ARDUINO_ESP8266_RELEASE
if (version.equals("00000000")) {
version = String(ARDUINO_ESP8266_RELEASE);
}
#endif
return version;
}
String getCoreRevision() {
#ifdef ARDUINO_ESP8266_GIT_VER
return String(ARDUINO_ESP8266_GIT_VER);
#else
return String("");
#endif
}
// WTF
// Calling ESP.getFreeHeap() is making the system crash on a specific
// AiLight bulb, but anywhere else...
unsigned int getFreeHeap() {
if (getSetting("wtfHeap", 0).toInt() == 1) return 9999;
return ESP.getFreeHeap();
}
String buildTime() {
const char time_now[] = __TIME__; // hh:mm:ss
unsigned int hour = atoi(&time_now[0]);
unsigned int minute = atoi(&time_now[3]);
unsigned int second = atoi(&time_now[6]);
const char date_now[] = __DATE__; // Mmm dd yyyy
const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
unsigned int month = 0;
for ( int i = 0; i < 12; i++ ) {
if (strncmp(date_now, months[i], 3) == 0 ) {
month = i + 1;
break;
}
}
unsigned int day = atoi(&date_now[3]);
unsigned int year = atoi(&date_now[7]);
char buffer[20];
snprintf_P(
buffer, sizeof(buffer), PSTR("%04d-%02d-%02d %02d:%02d:%02d"),
year, month, day, hour, minute, second
);
return String(buffer);
}
unsigned long getUptime() {
static unsigned long last_uptime = 0;
static unsigned char uptime_overflows = 0;
if (millis() < last_uptime) ++uptime_overflows;
last_uptime = millis();
unsigned long uptime_seconds = uptime_overflows * (UPTIME_OVERFLOW / 1000) + (last_uptime / 1000);
return uptime_seconds;
}
void heartbeat() {
unsigned long uptime_seconds = getUptime();
unsigned int free_heap = getFreeHeap();
// -------------------------------------------------------------------------
// MQTT
// -------------------------------------------------------------------------
#if MQTT_SUPPORT
#if (HEARTBEAT_REPORT_INTERVAL)
mqttSend(MQTT_TOPIC_INTERVAL, HEARTBEAT_INTERVAL / 1000);
#endif
#if (HEARTBEAT_REPORT_APP)
mqttSend(MQTT_TOPIC_APP, APP_NAME);
#endif
#if (HEARTBEAT_REPORT_VERSION)
mqttSend(MQTT_TOPIC_VERSION, APP_VERSION);
#endif
#if (HEARTBEAT_REPORT_HOSTNAME)
mqttSend(MQTT_TOPIC_HOSTNAME, getSetting("hostname").c_str());
#endif
#if (HEARTBEAT_REPORT_IP)
mqttSend(MQTT_TOPIC_IP, getIP().c_str());
#endif
#if (HEARTBEAT_REPORT_MAC)
mqttSend(MQTT_TOPIC_MAC, WiFi.macAddress().c_str());
#endif
#if (HEARTBEAT_REPORT_RSSI)
mqttSend(MQTT_TOPIC_RSSI, String(WiFi.RSSI()).c_str());
#endif
#if (HEARTBEAT_REPORT_UPTIME)
mqttSend(MQTT_TOPIC_UPTIME, String(uptime_seconds).c_str());
#endif
#if (HEARTBEAT_REPORT_DATETIME) & (NTP_SUPPORT)
mqttSend(MQTT_TOPIC_DATETIME, String(ntpDateTime()).c_str());
#endif
#if (HEARTBEAT_REPORT_FREEHEAP)
mqttSend(MQTT_TOPIC_FREEHEAP, String(free_heap).c_str());
#endif
#if (HEARTBEAT_REPORT_RELAY)
relayMQTT();
#endif
#if (LIGHT_PROVIDER != LIGHT_PROVIDER_NONE) & (HEARTBEAT_REPORT_LIGHT)
lightMQTT();
#endif
#if (HEARTBEAT_REPORT_VCC)
#if ADC_VCC_ENABLED
mqttSend(MQTT_TOPIC_VCC, String(ESP.getVcc()).c_str());
#endif
#endif
#if (HEARTBEAT_REPORT_STATUS)
mqttSend(MQTT_TOPIC_STATUS, MQTT_STATUS_ONLINE, true);
#endif
bool serial = !mqttConnected();
#else
bool serial = true;
#endif
// -------------------------------------------------------------------------
// Serial
// -------------------------------------------------------------------------
if (serial) {
DEBUG_MSG_P(PSTR("[MAIN] Uptime: %ld seconds\n"), uptime_seconds);
DEBUG_MSG_P(PSTR("[MAIN] Free heap: %d bytes\n"), free_heap);
#if ADC_VCC_ENABLED
DEBUG_MSG_P(PSTR("[MAIN] Power: %d mV\n"), ESP.getVcc());
#endif
}
#if NTP_SUPPORT
DEBUG_MSG_P(PSTR("[MAIN] Time: %s\n"), (char *) ntpDateTime().c_str());
#endif
// -------------------------------------------------------------------------
// InfluxDB
// -------------------------------------------------------------------------
#if INFLUXDB_SUPPORT
#if (HEARTBEAT_REPORT_UPTIME)
idbSend(MQTT_TOPIC_UPTIME, String(uptime_seconds).c_str());
#endif
#if (HEARTBEAT_REPORT_FREEHEAP)
idbSend(MQTT_TOPIC_FREEHEAP, String(free_heap).c_str());
#endif
#endif
// -------------------------------------------------------------------------
// WebSockets
// -------------------------------------------------------------------------
#if WEB_SUPPORT
#if NTP_SUPPORT
{
char buffer[200];
snprintf_P(
buffer,
sizeof(buffer) - 1,
PSTR("{\"time\": \"%s\", \"uptime\": %lu, \"heap\": %lu}"),
ntpDateTime().c_str(), uptime_seconds, free_heap
);
wsSend(buffer);
}
#endif
#endif
}
// -----------------------------------------------------------------------------
// SSL
// -----------------------------------------------------------------------------
#if ASYNC_TCP_SSL_ENABLED
bool sslCheckFingerPrint(const char * fingerprint) {
return (strlen(fingerprint) == 59);
}
bool sslFingerPrintArray(const char * fingerprint, unsigned char * bytearray) {
// check length (20 2-character digits ':' or ' ' separated => 20*2+19 = 59)
if (!sslCheckFingerPrint(fingerprint)) return false;
// walk the fingerprint
for (unsigned int i=0; i<20; i++) {
bytearray[i] = strtol(fingerprint + 3*i, NULL, 16);
}
return true;
}
bool sslFingerPrintChar(const char * fingerprint, char * destination) {
// check length (20 2-character digits ':' or ' ' separated => 20*2+19 = 59)
if (!sslCheckFingerPrint(fingerprint)) return false;
// copy it
strncpy(destination, fingerprint, 59);
// walk the fingerprint replacing ':' for ' '
for (unsigned char i = 0; i<59; i++) {
if (destination[i] == ':') destination[i] = ' ';
}
return true;
}
#endif
// -----------------------------------------------------------------------------
// Reset
// -----------------------------------------------------------------------------
unsigned char resetReason() {
static unsigned char status = 255;
if (status == 255) {
status = EEPROM.read(EEPROM_CUSTOM_RESET);
if (status > 0) resetReason(0);
if (status > CUSTOM_RESET_MAX) status = 0;
}
return status;
}
void resetReason(unsigned char reason) {
EEPROM.write(EEPROM_CUSTOM_RESET, reason);
EEPROM.commit();
}
void reset(unsigned char reason) {
resetReason(reason);
ESP.restart();
}
void deferredReset(unsigned long delay, unsigned char reason) {
_defer_reset.once_ms(delay, reset, reason);
}
// -----------------------------------------------------------------------------
#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
// -----------------------------------------------------------------------------
char * ltrim(char * s) {
char *p = s;
while ((unsigned char) *p == ' ') ++p;
return p;
}
double roundTo(double num, unsigned char positions) {
double multiplier = 1;
while (positions-- > 0) multiplier *= 10;
return round(num * multiplier) / multiplier;
}
void nice_delay(unsigned long ms) {
unsigned long start = millis();
while (millis() - start < ms) delay(1);
}