//
// Calculate Echo Pulse width (
// return: centimeter (CM)
//
uint32_t HCSR04::distance(uint32_t timeout) {
CTick tick;
CTimeout to;
to.reset();
// trigger
m_trig = HIGH;
tick.delay(10); // 10us
m_trig = LOW;
// wait echo LOW->HIGH
while (m_echo != HIGH) {
if (to.isExpired(timeout))
return 0;
}
// wait echo HIGH->LOW
tick.reset();
while (m_echo == HIGH) {
if (to.isExpired(timeout))
return 0;
}
return (tick.elapsed() * 3432 / 20000); // unit (millimeter)
}
uint32_t pulseIn(int pin, PIN_LEVEL_T value, uint32_t timeout) {
CPin p(unoPIN[pin]);
p.input();
CTick tick;
CTimeout to;
to.reset();
while( p!=value ) {
if ( timeout && to.isExpired(timeout) ) return 0;
}
tick.reset();
while( p==value ) {
if ( timeout && to.isExpired(timeout) ) return 0;
}
return tick.elapsed();
}
//
// Main Routine
//
int main(void) {
#ifdef DEBUG
CSerial ser; // declare a UART object
ser.enable();
CDebug dbg(ser); // Debug stream use the UART object
dbg.start();
#endif
//
// PWM (Using Timer1)
//
hwPWM pwm1(TIMER_1, 5, 6, 7); // set pwm1 pins on P0.5 (CH1), P0.6 (CH2) and P0.7 (CH3)
pwm1.period(0.0002); // period time = 200us
pwm1.enable(); // enable PWM module
// update pwm2 channels duty-cycle (can be updated in any-time)
pwm1.dutycycle(PWM_CH_1, 0.8f); // CH1 duty-cycle = 80%
pwm1.dutycycle(PWM_CH_2, 0.6f); // CH2 duty-cycle = 60%
pwm1.dutycycle(PWM_CH_3, 0.2f); // CH3 duty-cycle = 20%
//
// PWM (Using Timer2)
//
hwPWM pwm2(TIMER_2, LED_PIN_1, LED_PIN_2); // set pwm2 pins on LED1 (CH1) and LED2
pwm2.period(0.0005); // period time = 500us
pwm2.enable(); // enable PWM module
// update pwm2 channels duty-cycle (can be updated in any-time)
pwm2.dutycycle(PWM_CH_1, 0.8f); // CH1 duty-cycle = 80%
pwm2.dutycycle(PWM_CH_2, 0.1f); // CH2 duty-cycle = 10%
//
// LED
//
CPin led(LED_PIN_0);
led.output();
CTimeout tmLED;
//
// Enter main loop.
//
while(1) {
//
// FireFly loop
//
if ( tmLED.isExpired(500) ) {
tmLED.reset();
led.toggle();
}
}
}
//
// Main Routine
//
int main(void) {
#ifdef DEBUG
CSerial ser; // declare a UART object
ser.enable();
CDebug dbg(ser); // Debug stream use the UART object
dbg.start();
#endif
//
// Optional: Enable tickless technology
//
#ifndef DEBUG
CPowerSave::tickless(true);
#endif
//
// Your setup code here
//
CButton btn(BUTTON_PIN_0);
CBuzzer buz(15); // buzzer on P0.15
buz.enable();
CPin led(LED_PIN_0);
led.output();
CTimeout tmLED;
//
// Enter main loop.
//
while(1) {
//
// Your loop code here
//
switch(btn.isPressed()) {
case BTN_PRESSED:
buz.post(3); // turn on buzzer x 3
break;
case BTN_RELEASED:
break;
case BTN_NOTHING:
break;
}
if ( tmLED.isExpired(500) ) {
tmLED.reset();
led.toggle();
}
}
}
void CButton::run() {
CTimeout bounce;
while(1) {
if ( bit_chk(m_flag, KEY_FLAG_DOWN) ) {
if ( m_pin==HIGH ){
if ( bounce.isExpired(10) ) {
bit_clr(m_flag, KEY_FLAG_DOWN);
onKeyUp(); // call virtual function "onKeyUp()"
}
} else {
bounce.reset();
}
} else {
if ( m_pin==LOW ){
if ( bounce.isExpired(5) ) {
bit_set(m_flag, KEY_FLAG_DOWN);
onKeyDown(); // call virtual function "onKeyDown()"
}
} else {
bounce.reset();
}
}
}
}
void CButtons::run() {
CTimeout tm;
uint32_t newval;
while(1) {
newval = m_pins;
if ( newval != m_flag ) {
if ( tm.isExpired(10) ) { // wait for bounce time
m_down = newval;
for (int i=0; i<m_pins.count(); i++) {
if ( bit_chk((m_flag ^ newval), i) ) { // is different? Key Even caused...
if ( bit_chk(newval, i) ) { // HIGH is key up
onKeyUp(i);
} else { // LOW is key down
onKeyDown(i);
}
}
}
m_flag = newval;
}
} else {
tm.reset();
}
}
}
