I have this code but for some reason if i call the runshellcommand() nothing happens in the bridge
but when i copy the shellcommand an paste it directly in the linux terminal this works fine any ideas?
maybe i'm missing something?
the idea is that i get a JSONstring and send it over mqtt to server.
thank you in advance! ;D
#define BAUDRATE 115200
#define MSGSIZEÂ Â Â Â Â Â 240Â Â //Depends on the size of the JSON string
#define RF95_FREQÂ Â Â Â Â 863.2Â //Middle frequency
#include <FileIO.h>
#include <Process.h>
#include <Bridge.h>
#include <Console.h>
#include <SPI.h>
#include <RH_RF95.h>
RH_RF95 rf95;
int led = A2;
void SendMqtt()
{
 Process mqtt;               Â
 mqtt.runShellCommand("mosquitto_pub -h 192.168.1.26 -p 4238 -u r36fEiQJDQKy0O5EWqwR -t v1/devices/me/telemetry -m {\"test12\":\"126\"}");
}
void setup()
{
 pinMode(led, OUTPUT);
 Bridge.begin(BAUDRATE);
 Console.begin();
 while (!Console) ;          // Wait for console port to be available
 Console.println("Start Sketch");
 if (!rf95.init())
  Console.println("init failed");
 rf95.setFrequency(RF95_FREQ);    // Setup ISM frequency
 rf95.setTxPower(13);        // Setup Power,dBm
 rf95.setSpreadingFactor(9);     // Setup Spreading Factor (6 ~ 12)
 rf95.setSignalBandwidth(125000);  // Setup BandWidth, option: 7800,10400,15600,20800,31200,41700,62500,125000,250000,500000
 rf95.setCodingRate4(5);       // Setup Coding Rate:5(4/5),6(4/6),7(4/7),8(4/8)
 Console.print("Listening on frequency: ");
 Console.println(RF95_FREQ);
}
void loop()
{
 if (rf95.available())
 {
  // Should be a message for us now
  uint8_t buf[MSGSIZE];
  uint8_t len = sizeof(buf);
  if (rf95.recv(buf, &len))
  {
   digitalWrite(led, HIGH);
   Console.println((char*)buf);
   Console.print("RSSI: ");
   Console.println(rf95.lastRssi(), DEC);
   SendMqtt();
 Â
   digitalWrite(led, LOW);
  }
  else
  {
   Console.println("recv failed");
  }
 }
}
Not sure but your command looks malformed: You should always use absolute paths and you should be carefull when using quotes in a command line since they are parsed before given to the process as arguments:
I think you need to escape the single quotes ( ' ).. What value does "runShellCommand" return? Have you tried to run a different command and see if it works?
I'm out of ideas then.. The exit code "0" suggests success, maybe you should try to wrap the command into a shell (or python) script and try to debug on from there. Create file "/home/username/testmqqt.sh" with content:
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Danois90:
I'm out of ideas then.. The exit code "0" suggests success, maybe you should try to wrap the command into a shell (or python) script and try to debug on from there. Create file "/home/username/testmqqt.sh" with content:
yeah i tried this but i think the problem lays somewhere deeper in one of the buffers of the runShelCommand() because if i shorten my string to like 3 Json objects this works again
if you watch in the headers you can see they call the begin() and addParameter() functions so i switched back using them code now looks something like this
void runCommand(){
Console.println(messageString);
Process p; // Create a process and call it "p"
p.begin("mosquitto_pub");
p.addParameter("-h");
p.addParameter(mqttServerIP);
p.addParameter("-p");
p.addParameter(mqttPort);
p.addParameter("-u");
p.addParameter(accesToken);
p.addParameter("-t");
p.addParameter(topic);
p.addParameter("-m");
p.addParameter(messageString);
p.run(); // Run the process and wait for its termination
// Print arduino logo over the Serial
// A process output can be read with the stream methods
while (p.available() > 0) {
char c = p.read();
Console.print(c);
}
// Ensure the last bit of data is sent.
Console.flush();
//memset(messageString, 0, sizeof(messageString));
mqttString = "";
accesToken = "";
}
