Differences

This shows you the differences between two versions of the page.

--- arduino:sim900 [2017/04/23 17:30] – created aistis
+++ arduino:sim900 [2017/05/08 16:25] (current) – aistis
@@ Line 1: / Line 1: @@
 GPS and GPRS board
+http://wiki.seeed.cc/GPRS_Shield_v1.0/
+https://raw.githubusercontent.com/SeeedDocument/GPRS_Shield_v1.0/master/img/GPRS_Shield_interface.png
 <code>
@@ Line 9: / Line 13: @@
 #include <SoftwareSerial.h>
 SoftwareSerial GPRS(7, 8);
-unsigned char buffer[64]; // buffer array for data recieve over serial port
-int count=0;     // counter for buffer array
 void setup()
 {
     GPRS.begin(19200);               // the GPRS baud rate
     Serial.begin(19200);             // the Serial port of Arduino baud rate.
 }
 void loop()
 {
-    if (GPRS.available())              // if date is comming from softwareserial port ==> data is comming from gprs shield
+    if (GPRS.available())
-    {
+    Serial.write(GPRS.read());
-        while(GPRS.available())          // reading data into char array
-        {
-            buffer[count++]=GPRS.read();     // writing data into array
-            if(count == 64)break;
-        }
-        Serial.write(buffer,count);            // if no data transmission ends, write buffer to hardware serial port
-        clearBufferArray();              // call clearBufferArray function to clear the storaged data from the array
-        count = 0;                       // set counter of while loop to zero
-    }
     if (Serial.available())            // if data is available on hardwareserial port ==> data is comming from PC or notebook
     GPRS.write(Serial.read());       // write it to the GPRS shield
 }
-void clearBufferArray()              // function to clear buffer array
-{
-    for (int i=0; i<count;i++)
-    { buffer[i]=NULL;}                  // clear all index of array with command NULL
-}
 </code>