Created
March 3, 2018 09:37
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WiringPi code for sending signals to my 433MHz remote controlled wall sockets labeled with "unitec EIM-209 48111". The protocol is quite different from other remotes, the remote unit sends each code in multiple different ways and also cycles between 4 different codes for each button. I have not spent the time to figure out how/if the address and…
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| #include <wiringPi.h> | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #define PIN 8 | |
| #define PERIOD 1500 | |
| #define SHORT 440 //short pulse == 1 in rtl_433 output | |
| #define LONG 940 | |
| #define LONGLOW 1140 | |
| #define LONGHIGH 2940 | |
| #define PAUSE 7080 | |
| #define CORRECTION -70 | |
| //values received with rtl_433 -p 75 -R0 -X "unitec:OOK_PWM:440:940:1400:2000" | |
| static unsigned int codes[32] = { | |
| 0x1aa373, 0x18ca43, 0x1d8583, 0x156cd3, //A OFF | |
| 0x1bd153, 0x165f93, 0x11b4e3, 0x1ee7a3, //A ON | |
| 0x1f7d6a, 0x19282a, 0x1406ba, 0x139b3a, //B OFF | |
| 0x1c301a, 0x1212fa, 0x1749ca, 0x10fe0a, //B ON | |
| 0x11b4e1, 0x1ee7a1, 0x1bd151, 0x165f91, //C OFF | |
| 0x1d8581, 0x156cd1, 0x1aa371, 0x18ca41, //C ON | |
| 0x1212f8, 0x1749c8, 0x10fe08, 0x1c3018, //D OFF | |
| 0x1f7d68, 0x192828, 0x1406b8, 0x139b38 //D ON | |
| }; | |
| void delayUs(unsigned int us) { | |
| delayMicroseconds(us + CORRECTION); | |
| } | |
| void sendBit(unsigned int bit) { | |
| digitalWrite(PIN, HIGH); | |
| delayUs((bit & 1) ? SHORT : LONG); | |
| digitalWrite(PIN, LOW); | |
| delayUs((bit & 1) ? (PERIOD - SHORT) : (PERIOD - LONG)); | |
| } | |
| //send 24 bits, MSB first | |
| void sendCommand(unsigned int command) { | |
| for (int j = 23; j>=0; j--) { | |
| sendBit(command >> j); | |
| } | |
| } | |
| void sendPacket(unsigned int command) { | |
| sendBit(1); | |
| delayUs(LONGLOW); | |
| sendCommand(command); | |
| sendBit(1); | |
| delayUs(LONGLOW); | |
| sendCommand(command); | |
| sendBit(1); | |
| delayUs(LONGLOW); | |
| sendCommand(command); | |
| sendBit(1); | |
| delayUs(LONGLOW); | |
| sendCommand(command); | |
| digitalWrite(PIN, HIGH); | |
| delayUs(LONGHIGH); | |
| digitalWrite(PIN, LOW); | |
| delayUs(PAUSE); | |
| sendCommand(command); | |
| digitalWrite(PIN, HIGH); | |
| delayUs(LONGHIGH); | |
| digitalWrite(PIN, LOW); | |
| delayUs(PAUSE); | |
| sendCommand(command); | |
| digitalWrite(PIN, HIGH); | |
| delayUs(LONGHIGH); | |
| digitalWrite(PIN, LOW); | |
| delayUs(PAUSE); | |
| sendCommand(command); | |
| digitalWrite(PIN, HIGH); | |
| delayUs(LONGHIGH); | |
| digitalWrite(PIN, LOW); | |
| delayUs(PAUSE); | |
| sendCommand(command); | |
| delay(50); | |
| } | |
| int main (int argc, char *argv[]) { | |
| wiringPiSetup(); | |
| pinMode(PIN, OUTPUT); | |
| if (argc == 3) { | |
| unsigned long channel = strtoul(argv[1], NULL, 10); | |
| unsigned long value = strtoul(argv[2], NULL, 10); | |
| printf("channel %lu %s\n", channel, value == 1 ? "on" : "off"); | |
| sendPacket(codes[(channel * 8) + (4*value)]); | |
| sendPacket(codes[(channel * 8) + 1 + (4*value)]); | |
| sendPacket(codes[(channel * 8) + 2 + (4*value)]); | |
| sendPacket(codes[(channel * 8) + 3 + (4*value)]); | |
| return 0; | |
| } | |
| printf("Usage: %s [0|1|2|3] [0|1] to turn channel 0-3 off or on\n", argv[0]); | |
| return 1; | |
| } |
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