void SenseMeLEDMatrixClass::begin(void) {
i2c_addr = 0x70;
Wire.begin();
Wire.beginTransmission(i2c_addr);
Wire.write(0x21); // turn on oscillator
Wire.endTransmission();
blinkRate(HT16K33_BLINK_OFF);
setBrightness(15); // max brightness
}
/**
* run through each of the four color phases
* (red, off, green off) for all of the LEDs,
* based on the color state for each sensor.
*
* Assertion:
* at entry, all LED output shift states are zero
* because that is how we initialize them,
* and that is how we leave them from here.
*/
void SensorManager::update() {
long now = millis(); // time for blink management
// turn on any red LEDs that need to be turned on
int set = 0;
for( int i = 0; i < cfg->sensors->num_sensors; i++ ) {
// if the sensor isn't configured ignore it
// see if we are blinked off
int b = blinkRate(i);
if (b > 0 && ((now/b) & 1))
continue;
// see if we should turn this red LED on
if (hasRed(i)) {
outshifter->set(cfg->sensors->red(i), true);
set++;
}
}
outshifter->write(); // and latch those values
delayMicroseconds(cfg->leds->usRed());
// turn off all the red LEDs
if (set > 0) {
for( int i = 0; i < cfg->sensors->num_sensors; i++ ) {
outshifter->set(cfg->sensors->red(i), 0);
}
outshifter->write(); // and latch those values
}
if (cfg->leds->usOff() > 1)
delayMicroseconds(cfg->leds->usOff()/2);
// turn on any green LEDs that need to be turned on
set = 0;
for( int i = 0; i < cfg->sensors->num_sensors; i++ ) {
// see if we are blinked off
int b = blinkRate(i);
if (b > 0 && ((now/b) & 1))
continue;
// see if we should turn this green LED on
if (hasGreen(i)) {
outshifter->set(cfg->sensors->green(i), true);
set++;
}
}
outshifter->write(); // and latch those values
delayMicroseconds(cfg->leds->usGreen());
// turn off all the greens
if (set > 0) {
for( int i = 0; i < cfg->sensors->num_sensors; i++ ) {
outshifter->set(cfg->sensors->green(i), 0);
}
outshifter->write(); // and latch those values
}
if (cfg->leds->usOff() > 0)
delayMicroseconds((1+cfg->leds->usOff())/2);
#ifdef DEFIB
unsigned s = now/1000; // current (second) time
if (nextUpdate > s + cfg->controls->minInterval())
nextUpdate = s; // correct for time wrap
#endif
// zone updates
for( int i = 1; i <= cfg->sensors->numZones(); i++ ) {
// flush out the state of each trigger relay
int p = cfg->sensors->zonePin(i);
if (p > 0) {
int t = zoneState & (1 << i);
digitalWrite(p, t ? HIGH : LOW);
}
#ifdef DEFIB
// decrement defib counters at max allowable rate
if (s >= nextUpdate) {
if (defib[i] > 0)
defib[i]--;
}
#endif
}
#ifdef DEFIB
// schedule the next counter update
if (s >= nextUpdate)
nextUpdate = s + cfg->controls->minInterval();
#endif
}