Hi. I have my Raspberry Pi 1 B (minibian, OF 0.9.2) connected with 2nd device using UART ports with MAX3232 (TTL to RS232). ttyAMA0 login is disabled, tested the serial communication with minicom and works great. Each time I press button on the 2nd device I receive the message on my RPi.
Problem starts when I want to do the same thing with ofSerial. No communication, log says that all is OK:
[notice ] ofSerial: opening /dev/ttyAMA0 @ 9600 bps
[notice ] ofSerial: opened /dev/ttyAMA0 sucessfully @ 9600 bps
The only way to force OF to receive messages is to run minicom and quit it without reseting the connection (Ctrl+A, Z, Q). Then OF works as it should.
Is there something that I’m missing?
Also when running minicom or OF for the first time after reboot I get uart-pl011 20201000.uart: no DMA platform data.
.h file:
#pragma once
#include "ofMain.h"
class ofApp : public ofBaseApp{
public:
void setup();
void update();
void draw();
void keyPressed(int key);
void keyReleased(int key);
void windowResized(int w, int h);
void dragEvent(ofDragInfo dragInfo);
void gotMessage(ofMessage msg);
ofSerial mySerialConnection;
ofTrueTypeFont myfont;
};
.cpp file:
#include "ofApp.h"
//--------------------------------------------------------------
void ofApp::setup(){
ofSetVerticalSync(true);
myfont.loadFont("arial.ttf", 32);
mySerialConnection.setup("/dev/ttyAMA0", 9600);
}
//--------------------------------------------------------------
void ofApp::update(){
}
//--------------------------------------------------------------
void ofApp::draw(){
string diagnostics;
diagnostics += "Bytes wainting in buffer: " + ofToString(mySerialConnection.available()) + "\n";
myfont.drawString(diagnostics, 100,100);
}