[Questions]stop the matrix for a moment?

sangwoo · April 24, 2020, 11:25am

Hello
I run with the IR Remote library, but the IR data that I send is broken.
I want to stop the matrix for a moment, but I have no idea.

Thank you for watching.

marcmerlin · April 24, 2020, 3:59pm

It’s not trivial to stop the matrix as it needs constant refresh, more than 100 times per second, which actually is sending PWM signals more than a thousand times per second.
To turn it off, the screen would go dark, and you would have to send the IR code at th exact time.
I have found that IR on ESP32 works well enough (sometimes I get another number for the same button, but it’s always the same).
Or you can also try

github.com

lbernstone/IR32/blob/master/examples/Loopback/Loopback.ino

#define TX_PIN 25
#define RX_PIN 26

#include <IRSend.h>
#include <IRRecv.h>
#include <Ticker.h>

IRSend remote1;
IRRecv remote2;
Ticker tkSend;

void sendKey() {
  remote1.send(0xE1419999);
}

void setup() {
  Serial.begin(115200);
  remote1.start(TX_PIN, "LG32");
  remote2.start(RX_PIN);
  tkSend.attach(2, sendKey);

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it uses RMT instead of interrupts on ESP32

sangwoo · April 24, 2020, 5:06pm

Thank you.
There is an LED panel power switching FET, so it is easy to turn off the screen.

About 20% successful transmission.
I am looking for a timing point to transfer, but it is difficult.

I need to be able to copy and use irregular IR protocols.
(Modified RC5, 12.5Byte Data, etc …)
So IR-related code is not easy to modify.
(IR library in use GitHub - crankyoldgit/IRremoteESP8266: Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/)

marcmerlin · April 24, 2020, 5:36pm

use the RMT library I gave you, not the ESP8266 one.
or use the original lib I added ESP32 receive support on, it works well enough for me. GitHub - Arduino-IRremote/Arduino-IRremote: Infrared remote library for Arduino: send and receive infrared signals with multiple protocols

sangwoo · April 24, 2020, 5:47pm

Okay.
Let’s do it
Thank you.