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esp-idf-rc-switch

315/433MHz ASK RF driver for esp-idf.
There are several repositories available for esp-idf, but I couldn't find a submittable library.
This repository can send and receive.

I ported from here.

Software requirements

ESP-IDF V4.4/V5.x.
ESP-IDF V5.0 is required when using ESP32-C2.
ESP-IDF V5.1 is required when using ESP32-C6.

Hardware requirements

315MHz/433MHz ASK Wireless transmitter/receiver like this.

  • Transmitter
    H34A-433/H34A-315
    SYN115
    STX882

  • Receiver
    H3V3/H3V4/H5V3/H5V4
    SYN480R
    LR43B/LR33B
    SRX882/SRX887

I used this:

H3V4F-2 H3V4F-3

Note
As far as I know, there are 5V module and 3.3V module in the receiving module.
Only 3.3V modules can be used with the ESP32.

Installation

git clone https://github.com/nopnop2002/esp-idf-rc-switch
cd esp-idf-rc-switch
idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3/esp32c6}
idf.py menuconfig
idf.py flash

Configuration

config-main config-app config-direction

On the transmitting side, you can choose the protocol and the number of data bits. config-transmit

The available protocols are:

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)
  { 150, {  2, 62 }, {  1,  6 }, {  6,  1 }, false },    // protocol 7 (HS2303-PT, i. e. used in AUKEY Remote)
  { 200, {  3, 130}, {  7, 16 }, {  3,  16}, false},     // protocol 8 Conrad RS-200 RX
  { 200, { 130, 7 }, {  16, 7 }, { 16,  3 }, true},      // protocol 9 Conrad RS-200 TX
  { 365, { 18,  1 }, {  3,  1 }, {  1,  3 }, true },     // protocol 10 (1ByOne Doorbell)
  { 270, { 36,  1 }, {  1,  2 }, {  2,  1 }, true },     // protocol 11 (HT12E)
  { 320, { 36,  1 }, {  1,  2 }, {  2,  1 }, true }      // protocol 12 (SM5212)
};

//{pulseLength, {syncFactor.high, syncFactor.low}, {zero.high, zero.low}, {one.high, one.low}, invertedSignal}

Wirering

Radio Module ESP32
DATA -- GPIO4
GND -- GND
VCC -- 3.3V

You can change data pin to any pin using menuconfig.

Communicat with Arduino Environment

I used this library on Arduino environment.
The sample code for the Arduino environment can be found in the ArduinoCode folder.

From ESP32 to UNO

RCSwitch_Send

From UNO to ESP32

RCSwitch_Receive

Using garage door 315/433MHz Remote

You can control ESP32 using garage door 315/433Mhz remote.
You can buy it on AliExpress or eBay for about $3.
433MHz

Build the firmware as Receiver.
Fire the RF using the RF remote control.
GarageDoor