111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
|
|
* https://github.com/ffedoroff/nodemcu-firmware contributed by Roman Fedorov
|
|
*
|
|
* Module for operate 433/315Mhz devices like power outlet sockets, relays, etc.
|
|
* This will most likely work with all popular low cost power outlet sockets
|
|
* with a SC5262 / SC5272, HX2262 / HX2272, PT2262 / PT2272, EV1527,
|
|
* RT1527, FP1527 or HS1527 chipset.
|
|
*
|
|
* This module using some code from original rc-switch arduino lib
|
|
* https://github.com/sui77/rc-switch/ but unfortunatelly NodeMCU and Arduino
|
|
* are not fully compatable, and it cause for full rewrite rc-switch lib into new rfswitch lib.
|
|
*/
|
|
|
|
#include "module.h"
|
|
#include "lauxlib.h"
|
|
#include "platform.h"
|
|
#include "user_interface.h"
|
|
|
|
typedef struct HighLow {
|
|
uint8_t high;
|
|
uint8_t low;
|
|
} HighLow;
|
|
|
|
typedef struct Protocol {
|
|
int pulseLength;
|
|
HighLow syncFactor;
|
|
HighLow zero;
|
|
HighLow one;
|
|
/** @brief if true inverts the high and low logic levels in the HighLow structs */
|
|
bool invertedSignal;
|
|
} Protocol;
|
|
|
|
|
|
/* Format for protocol definitions:
|
|
* {pulselength, Sync bit, "0" bit, "1" bit}
|
|
*
|
|
* pulselength: pulse length in microseconds, e.g. 350
|
|
* Sync bit: {1, 31} means 1 high pulse and 31 low pulses
|
|
* (perceived as a 31*pulselength long pulse, total length of sync bit is
|
|
* 32*pulselength microseconds), i.e:
|
|
* _
|
|
* | |_______________________________ (don't count the vertical bars)
|
|
* "0" bit: waveform for a data bit of value "0", {1, 3} means 1 high pulse
|
|
* and 3 low pulses, total length (1+3)*pulselength, i.e:
|
|
* _
|
|
* | |___
|
|
* "1" bit: waveform for a data bit of value "1", e.g. {3,1}:
|
|
* ___
|
|
* | |_
|
|
*
|
|
* These are combined to form Tri-State bits when sending or receiving codes.
|
|
*/
|
|
static const Protocol proto[] = {
|
|
{ 350, { 1, 31 }, { 1, 3 }, { 3, 1 }, false }, // protocol 1
|
|
{ 650, { 1, 10 }, { 1, 2 }, { 2, 1 }, false }, // protocol 2
|
|
{ 100, { 30, 71 }, { 4, 11 }, { 9, 6 }, false }, // protocol 3
|
|
{ 380, { 1, 6 }, { 1, 3 }, { 3, 1 }, false }, // protocol 4
|
|
{ 500, { 6, 14 }, { 1, 2 }, { 2, 1 }, false }, // protocol 5
|
|
{ 450, { 23, 1 }, { 1, 2 }, { 2, 1 }, true } // protocol 6 (HT6P20B)
|
|
};
|
|
|
|
/**
|
|
* Transmit a single high-low pulse.
|
|
*/
|
|
void transmit(HighLow pulses, bool invertedSignal, int pulseLength, int pin) {
|
|
platform_gpio_write(pin, !invertedSignal);
|
|
os_delay_us(pulseLength * pulses.high);
|
|
platform_gpio_write(pin, invertedSignal);
|
|
os_delay_us(pulseLength * pulses.low);
|
|
}
|
|
|
|
/**
|
|
* Transmit the first 'length' bits of the integer 'code'. The
|
|
* bits are sent from MSB to LSB, i.e., first the bit at position length-1,
|
|
* then the bit at position length-2, and so on, till finally the bit at position 0.
|
|
*/
|
|
void send(unsigned long protocol_id, unsigned long pulse_length, unsigned long repeat, unsigned long pin, unsigned long value, unsigned int length) {
|
|
platform_gpio_mode(pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT);
|
|
Protocol p = proto[protocol_id-1];
|
|
for (int nRepeat = 0; nRepeat < repeat; nRepeat++) {
|
|
for (int i = length-1; i >= 0; i--) {
|
|
if (value & (1L << i))
|
|
transmit(p.one, p.invertedSignal, pulse_length, pin);
|
|
else
|
|
transmit(p.zero, p.invertedSignal, pulse_length, pin);
|
|
}
|
|
transmit(p.syncFactor, p.invertedSignal, pulse_length, pin);
|
|
}
|
|
}
|
|
|
|
|
|
static int rfswitch_send( lua_State *L )
|
|
{
|
|
unsigned int protocol_id = luaL_checkinteger( L, 1 );
|
|
unsigned int pulse_length = luaL_checkinteger( L, 2 );
|
|
unsigned int repeat = luaL_checkinteger( L, 3 );
|
|
unsigned int pin = luaL_checkinteger( L, 4 );
|
|
unsigned long value = luaL_checkinteger( L, 5 );
|
|
unsigned long length = luaL_checkinteger( L, 6 );
|
|
send(protocol_id, pulse_length, repeat, pin, value, length);
|
|
return 0;
|
|
}
|
|
|
|
// Module function map
|
|
LROT_BEGIN(rfswitch, NULL, 0)
|
|
LROT_FUNCENTRY( send, rfswitch_send )
|
|
LROT_END(rfswitch, NULL, 0)
|
|
|
|
|
|
NODEMCU_MODULE(RFSWITCH, "rfswitch", rfswitch, NULL);
|