I created a program (based on Telnet client software that has been posted) for interfacing a Rane Halogen audio system with a Monoprice 8x8 video matrix. My test board that I was working on is an Arduino Mega, but I just compiled it for an Arduino Uno (as that is what I built a case for) and I am getting a compiler warning:
Sketch uses 18370 bytes (56%) of program storage space. Maximum is 32256 bytes.
Global variables use 1565 bytes (76%) of dynamic memory, leaving 483 bytes for local variables. Maximum is 2048 bytes.
Low memory available, stability problems may occur.
The purpose of this program is to interface between a RANE Halogen audio system and allow control from its beautiful control interface to other appliances. The device I am controlling (at the moment) is a Monoprice Blackbird 8x8 HDMI Matrix (product #27842). And how it does it, it listens in via telnet to TCP port 4996 on the RANE Halogen sound system, and when it matches commands that are sent, it will then send a command to the HDMI Matrix over TCP port 4001.
I am still quite new to C++ programming but I have been programming for a while now in VB and Javascript, so I was able to grasp a lot of Arduino specific concepts quickly. But the limited memory is proving to be difficult.
I have attached the source code. If you could help that would be wonderful.
The commands that the RANE sends are in this format:
<C&12&1>
The first/last characters is the opening/ending to the command
The & is a dividing character
The second character represents the type of control
The 12 in the above example is control item number
The 1 is the value of the control number.
// This sketch is based on many examples, but is used to access the string from a RANE Halogen system and then feed particular outputs to RS232 commands to other components
#include <SPI.h>
#include <Ethernet.h>
#include <SoftwareSerial.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0x00, 0xDE, 0xAD, 0x12, 0x34, 0x56
};
IPAddress ip(172, 16, 50, 244);
// Enter the IP address of the server you're connecting to:
IPAddress server(172, 16, 50, 254);
//IPAddress server(192, 168, 2, 174); test environment
IPAddress HDMIMatrix(172, 16, 50, 249);
//IPAddress HDMIMatrix(192, 168, 2, 185); test environment
// Initialize the Ethernet client library with the IP address from above
// since we are connecting to RANE Halogen, the port for that is 4996:
EthernetClient client1;
EthernetClient client2;
// Store string and then process when completed
String StringReceived = "";
char character;
int HALloop = 1;
String HALType = "";
String HALControl = "";
String HALValue = "";
void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
//Ethernet.init(10); // Most Arduino shields
//Ethernet.init(5); // MKR ETH shield
//Ethernet.init(0); // Teensy 2.0
//Ethernet.init(20); // Teensy++ 2.0
//Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet
//Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet
// Open serial communications and wait for port to open:
Serial.begin(57600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// start the Ethernet connection:
Serial.println("Attempting to obtain IP from DHCP, stand by...");
Ethernet.begin(mac);
delay(3500);
if (Ethernet.begin(mac) == 0) {
// Failed to configure ethernet using DHCP, reverting to static IP
Serial.println("Failed to obtain DHCP address, reverting to ");
Serial.println(ip);
Ethernet.begin(mac, ip);
} else {
// Obtained DHCP address
Serial.println("Received IP: ");
Serial.println(Ethernet.localIP());
}
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
while (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
delay(500);
}
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting to Halogen Server...");
RestartHalogen:
// if you get a connection to the server, report back via serial:
if (client1.connect(server, 4996)) {
Serial.println("connected to Halogen Server.");
} else {
// if you didn't get a connection to the server:
Serial.println("connection failed to Halogen Server");
delay(500);
goto RestartHalogen;
}
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting to HDMI Matrix...");
RestartHDMIMatrix:
//if you get a connection to the server, report back via serial:
if (client2.connect(HDMIMatrix, 4001)) {
Serial.println("connected to HDMI Matrix.");
} else {
// if you didn't get a connection to the HDMI Matrix:
Serial.println("connection failed to HDMI Matrix");
delay(500);
goto RestartHDMIMatrix;
}
}
void loop() {
// if there are incoming bytes available
// from the server, read them and print them:
if (client1.available()) {
char b = client1.read();
//Serial.print(b);
if (b == '<') {
// Start of new command from HAL, dump old string contents
StringReceived = "";
HALType = "";
HALControl = "";
HALValue = "";
}
if (b != '<' and b != '>') {
// contents of HAL command stored
if (b == '&' and HALloop == 1) {
HALType = StringReceived;
HALloop = 2;
StringReceived = "";
}
if (b == '&' and HALloop == 2) {
HALControl = StringReceived;
StringReceived = "";
} else {
StringReceived.concat(b);
}
}
if (b == '>') {
HALValue = StringReceived;
HALloop = 1;
// End of HAL command reached, now time to process it
switch (HALControl.toInt()) {
case 62: // Window TV - Xfinity 1 Video selection
client2.write("OUT01:01.");
break;
case 67: // Window TV - Xfinity 2 Video selection
client2.write("OUT02:01.");
break;
case 68: // Window TV - Fire Stick Video selection
client2.write("OUT03:01.");
break;
case 69: // Window TV - Chromecast Video selection
client2.write("OUT04:01.");
break;
case 70: // Window TV - HDMI Desk Video selection
client2.write("OUT05:01.");
break;
case 71: // Window TV - HDMI Counter Video selection
client2.write("OUT06:01.");
break;
case 72: // Snack TV - Xfinity 1 Video selection
client2.write("OUT01:02.");
break;
case 73: // Snack TV - Xfinity 2 Video selection
client2.write("OUT02:02.");
break;
case 74: // Snack TV - Fire Stick Video selection
client2.write("OUT03:02.");
break;
case 75: // Snack TV - Chromecast Video selection
client2.write("OUT04:02.");
break;
case 76: // Snack TV - HDMI Desk Video selection
client2.write("OUT05:02.");
break;
case 77: // Snack TV - HDMI Counter Video selection
client2.write("OUT06:02.");
break;
/// ... extra cases removed total of 112
default:
// default case is to do nothing.
}
//Send commands
if (HALType == "C" and HALValue == "0") {
// Do Nothing, commmand buttons trigger twice.
} else if (HALType == "C" and HALValue == "1") {
// Sending command button commands
} else {
// Noting all other type of commands
Serial.println("HALType: " + HALType + " | HALControl: " + HALControl + " | HALValue: " + HALValue);
}
// End of processing
}
}
// as long as there are bytes in the serial queue,
// read them and send them out the socket if it's open:
while (Serial.available() > 0) {
char inChar = Serial.read();
if (client1.connected()) {
client1.print(inChar);
client1.print("received");
}
}
// if the server's disconnected, stop the client:
if (!client1.connected()) {
Serial.println();
Serial.println("disconnecting.");
client1.stop();
// do nothing:
while (true) {
delay(1);
}
}
}
HAL_control code.txt (11.4 KB)
