Rob Meades / C027_Support_N

Support for LISA-N101

Fork of C027_Support by u-blox

This is a variant of the C027 driver code for the C027N version, i.e. the one with the Neul/Huawei/u-blox Cellular Internet of Things module on board. The AT command interface for this module is entirely different to the AT interface for the other u-blox modules, hence this fork of the driver. Work is underway to rearchitect the original C027 driver so that a merge can be done.

Diff: GPS.cpp

Revision:
46:8ce9169e0747
Parent:
45:ebc2fd8dcf21
Child:
74:208e3e32d263
--- a/GPS.cpp	Mon May 05 15:42:49 2014 +0000
+++ b/GPS.cpp	Tue May 06 06:54:12 2014 +0000
@@ -323,20 +323,25 @@
 int GPSI2C::_get(char* buf, int len)
 {
     int read = 0;
-    unsigned char sz[2];
+    unsigned char sz[2] = {0,0};
     if (!I2C::write(_i2cAdr,&REGLEN,sizeof(REGLEN),true) && 
-        !I2C::read(_i2cAdr,(char*)sz,sizeof(sz),true))
+        !I2C::read(_i2cAdr,(char*)sz,sizeof(sz)))
     {
         int size = 256 * (int)sz[0] + sz[1];
         if (size > len)
             size = len;
-        if (size > 0)
-            read = !I2C::read(_i2cAdr,buf,size, true) ? size : 0;
-        found = (read == size);
+        if (size > 0) 
+        {
+            if (!I2C::write(_i2cAdr,&REGSTREAM,sizeof(REGSTREAM),true) &&
+                !I2C::read(_i2cAdr,buf,size)) {
+                read = size;
+            }
+            else 
+                found = false;
+        }
     }
     else 
         found = false;
-    I2C::stop();
     return read;
 }