unleashed-firmware/applications/irda/irda_nec.c

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[FL-140] Core api dynamic records (#296) * SYSTEM: tickless mode with deep sleep. * Move FreeRTOS ticks to lptim2 * API: move all sumbodules init routines to one place. Timebase: working lptim2 at tick source. * API Timebase: lp-timer routines, timer access safe zones prediction and synchronization. FreeRTOS: adjust configuration for tickless mode. * NFC: support for tickless mode. * API Timebase: improve tick error handling in IRQ. Apploader: use insomnia mode to run applications. * BLE: prevent sleep while core2 starting * HAL: nap while in insomnia mode * init records work * try to implement record delete * tests and flapp * flapp subsystem * new core functions to get app stat, simplify core code * fix thread termination * add strdup to core * fix tests * Refactoring: remove all unusued parts, update API usage, aggreagate API sources and headers, new record storage * Refactoring: update furi record api usage, cleanup code * Fix broken merge for freertos apps * Core, Target: fix compilation warnings * Drop firmware target local * HAL Timebase, Power, Clock: semaphore guarded access to clock and power modes, better sleep mode. * SD-Filesystem: wait for all deps to arrive before adding widget. Core, BLE: disable debug dump to serial. * delete old app example-ipc * delete old app fatfs list * fix strobe app, add input header * delete old display driver * comment old app qr-code * fix sd-card test, add forced widget update * remove unused new core test * increase heap to 128k * comment and assert old core tests * fix syntax Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2021-01-20 16:09:26 +00:00
#include <furi.h>
#include "irda_nec.h"
#include "irda_protocols.h"
void ir_nec_preambula(void) {
// 9ms carrier + 4.5ms pause
irda_pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY);
delay_us(9000);
irda_pwm_stop();
delay_us(4500);
}
void ir_nec_send_bit(bool bit) {
// 0 is 562.5us carrier + 1687.5us pause
// 1 is 562.5us carrier + 562.5us pause
irda_pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY);
delay_us(562.5);
irda_pwm_stop();
if(bit) {
delay_us(562.5);
} else {
delay_us(1687.5);
}
}
void ir_nec_send_byte(uint8_t data) {
for(uint8_t i = 0; i < 8; i++) {
ir_nec_send_bit((data & (1 << (i))) != 0);
}
}
void ir_nec_send(uint16_t addr, uint8_t data) {
// nec protocol is:
// preambula + addr + inverse addr + command + inverse command + bit pulse
//
// oddly enough, my analyzer (https://github.com/ukw100/IRMP) displays the reverse command
// and I dont know if this is my fault or a feature of the analyzer
// TODO: check the dictionary and check with a known remote
uint8_t nec_packet[4] = {~(uint8_t)addr, ~(uint8_t)(addr >> 8), ~(uint8_t)data, data};
ir_nec_preambula();
ir_nec_send_byte(nec_packet[0]);
ir_nec_send_byte(nec_packet[1]);
ir_nec_send_byte(nec_packet[2]);
ir_nec_send_byte(nec_packet[3]);
ir_nec_send_bit(1);
}