void light_configure_interrupt(uint16_t light_level, uint16_t hysteresis, void (*cb)(uint8_t level)) {
light_reading_t lr;
light_level_cb = cb;
// read current light value
light_wake();
_delay_ms(105);
lr = light_read();
int_current_level = (lr.ch0 > light_level);
}
void light_set_interrupt_params(uint16_t level, uint16_t hysteresis) {
int_level_setting = level;
int_hysteresis_setting = hysteresis;
light_reading_t lr;
// read current light value
light_wake();
_delay_ms(105);
lr = light_read();
int_current_level = (lr.ch0 > level);
light_sleep();
}
void _light_interrupt_finish() {
light_reading_t lr;
lr = light_read();
//printf_P(PSTR("\tlr.ch0=%04X lvl=%04X hyst=%04X curlvl=%d\n"),lr.ch0,int_level_setting,int_hysteresis_setting,int_current_level);
if (( int_current_level && (lr.ch0 < int_level_setting - int_hysteresis_setting)) ||
(!int_current_level && (lr.ch0 > int_level_setting + int_hysteresis_setting)) ) {
int_current_level = (lr.ch0 > int_level_setting);
report_current()->fields |= REPORT_TYPE_LIGHT_CHANGED;
report_current()->light_level_state = int_current_level;
}
light_sleep();
}
void init_Interrupts(void){
// Setup Interrupt for Light Sensor
light_setRange(LIGHT_RANGE_4000); // sensing up to 3892 lux
light_setIrqInCycles(LIGHT_CYCLE_1);
light_clearIrqStatus();
light_enable();
// Determine initial light conditions
uint32_t initial_light_value = light_read();
if (initial_light_value > LIGHTNING_THRESHOLD) {
// Initialize interrupt to trigger on falling below threshold
aboveThreshold = 1;
light_setLoThreshold(LIGHTNING_THRESHOLD);
light_setHiThreshold(RANGE_K2-1); // disable high threshold
} else {
// Initialize interrupt to trigger on exceeding threshold
aboveThreshold = 0;
light_setHiThreshold(LIGHTNING_THRESHOLD);
light_setLoThreshold(0); // disable low threshold
}
// clear interrupts before enabling
LPC_GPIOINT->IO2IntClr = 1 << 5;
LPC_GPIOINT->IO2IntClr = 1 << 10;
LPC_GPIOINT->IO0IntClr = 1 << 24;
LPC_GPIOINT->IO0IntClr = 1 << 25;
LPC_GPIOINT->IO0IntClr = 1 << 17;
LPC_GPIOINT->IO0IntClr = 1 << 15;
LPC_GPIOINT->IO0IntClr = 1 << 16;
LPC_GPIOINT->IO2IntClr = 1 << 3;
LPC_GPIOINT->IO2IntClr = 1 << 4;
LPC_GPIOINT->IO2IntEnF |= 1 << 5; // light sensor 3000 lux interrupt (P2.5)
LPC_GPIOINT->IO2IntEnF |= 1 << 10; // SW3 (P2.10)
LPC_GPIOINT->IO0IntEnF |= 1 << 24; // rotary switch right
LPC_GPIOINT->IO0IntEnF |= 1 << 25; // rotary switch left
// joystick
LPC_GPIOINT->IO0IntEnF |= 1 << 17; // center
LPC_GPIOINT->IO0IntEnF |= 1 << 15; // down
LPC_GPIOINT->IO0IntEnF |= 1 << 16; // right
LPC_GPIOINT->IO2IntEnF |= 1 << 3; // up
LPC_GPIOINT->IO2IntEnF |= 1 << 4; // left
enableTimer(RGB, 1000); // RGB will blink throughout operation at 1000ms interval
enableTimer(SAMPLING, 2000);
enableTimer(PCA9532, 250);
}
void _light_reporting_finish(void) {
report_current()->light = light_read();
report_current()->fields |= REPORT_TYPE_LIGHT;
light_sleep();
}
