net-tobi

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• Date class setters

  @net-tobi started

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  @Charly replied
• Pico just uses 3040 JSVars

  @net-tobi started

  • 22 comments
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  @Gordon replied
• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  @Gordon : I have to say thank you for the great support!

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  It is working well without any changes being necessary in the driver I uploaded here a few days ago. So you can use it as module. As well if someone else needs help regarding the SIM900 hardware I will of course help to get it running.

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  The new AT lib did it! Thank you so much Gordon! It works much more stable now. I'll test it tomorrow intensively.

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  Yes this is as well part of the problem. My close handlers are not getting called if the line starts with \r\n or \r or \n. See here:

  var handler = function(d) {
          var s;
          if(d === 'OK') {
            s = sckt;
            at.registerLine(s + ', CONNECT OK', function() {
              at.unregister(s + ', CONNECT OK');
              socks[s] = true;
            });
            at.registerLine(s + ', CLOSED', function() {
              at.unregisterLine(s + ', CLOSED');
              socks[s] = undefined;
            });
          }
        }; 
        at.cmd('AT+CIPSTART='+sckt+',"TCP",'+JSO­N.stringify(host)+','+port+'\r\n', 10000, handler);
  

  This unfortunately happens sometimes, for example a few seconds ago I had the situation:

  ] "\r\n1, CLOSED\r\n" <--- "\r\n1, CLOSED\r\n"
  

  The close handler has not been called here :(

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  maybe by extending the features of the AT lib?

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  Hi Gordon... It is annoying... Again problems with GPRS. When the sim900 is ready for receiving data after AT+CIPSEND it sends:

  ] "\r\n> "
  

  When I use the following code:

  at.register('> ', function() {
    at.unregister('> ');
    at.write(data);
    return "";
  });
  

  It removes the "> " from the AT buffer but leaves "\r\n" in it which can cause problems for subsequent requests (maybe for the +RECEIVE handler as well). I tried as well to register for "\r\n> ". That didn't solve that for me. How would you handle that? There are as well situations like

  ] "\r" <--- "\r"
  ] "\n> " <--- "\n> "
  

  or

  ["AT+CIPSEND=1,26\r\n"
  ] "\r\n>" <--- "\r\n>"
  ] "> " <--- " "
  

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  Please see the post above.

  Okay, If I experience further problems with it, I will add a timeout.

• GPRS or Edge Howto?

  in General • 8 years, 10 months

  

  Okay we have to wait for SEND OK, otherwise data can be lost. My solutions from yesterday works now. I saw that the LOW_MEMORY flag was set during execution. I compressed the code now and it seems to work stable.

  Here you find the current version of the driver.