This example establishes a transparent link between the mbed serial port and the modem (LISA or SARA) on the C027. You can use it to use the standard u-blox tools such as m-center or any terminal program. These tools can then connect to the serial port and talk directly to the modem. Baudrate should be set to 115200 baud and is fixed. m-center can be downloaded from u-blox website following this link: http://www.u-blox.com/en/evaluation-tools-a-software/u-center/m-center.html

Dependencies:   C027-REVB mbed

Fork of C027_ModemTransparentSerial by u-blox

Revision:
0:53fc79c7af10
Child:
1:7334dcb895d0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 22 21:22:05 2013 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+#include "C027_PinNames.h"
+
+int main() 
+{
+    // open the mdm serial port
+    Serial mdm(MDMTXD, MDMRXD);
+    mdm.baud(MDMBAUD);
+    // tell the modem that we can always receive data
+    DigitalOut mdmRts(MDMTRTS);
+    mdmRts = 0; // (not using flow control)
+    
+    // open the PC serial port and (use the same baudrate)
+    Serial pc(USBTX, USBRX);
+    pc.baud(MDMBAUD);
+    
+    while (1)
+    {
+        // transfer data from pc to modem
+        if (pc.readable() && mdm.writeable())
+            mdm.putc(pc.getc());
+        // transfer data from modem to pc
+        if (mdm.readable() && pc.writeable())
+            pc.putc(mdm.getc());
+    }
+}