Created
October 4, 2024 01:39
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NEC Protocol example.py
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| from machine import Pin,PWM | |
| from time import ticks_diff, ticks_us | |
| import time | |
| LED_Sig = Pin(2, Pin.OUT) | |
| LED_Neg = Pin(0, Pin.OUT) | |
| LED_Pos = Pin(3, Pin.OUT) | |
| LED_Neg.off() | |
| LED_Pos.on() | |
| pwm = PWM(LED_Sig, freq=38000) | |
| pwm.duty_u16(1310) | |
| REC_Sig = Pin(20, Pin.IN, Pin.PULL_UP) | |
| Last_Interrupt_t = time.ticks_us() | |
| def rec_interrupt(pin): | |
| global Last_Interrupt_t | |
| print(time.ticks_us()-Last_Interrupt_t) | |
| Last_Interrupt_t = time.ticks_us() | |
| def send(bit): | |
| pwm.duty_u16(1310) | |
| time.sleep_us(560) | |
| pwm.duty_u16(0) | |
| if bit == 0: | |
| time.sleep_us(565) | |
| else: | |
| time.sleep_us(1685) | |
| def send_frame(): | |
| pwm.duty_u16(1310) | |
| time.sleep_us(9000) | |
| pwm.duty_u16(0) | |
| time.sleep_us(4500) | |
| def end_frame(): | |
| pwm.duty_u16(1310) | |
| time.sleep_us(560) | |
| pwm.duty_u16(0) | |
| REC_Sig.irq(trigger=Pin.IRQ_FALLING, handler=rec_interrupt) | |
| send_frame() | |
| for bit in [0,1,1,1,0,0,1,1]: | |
| send(bit) |
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