u-blox
This example establishes a transparent link between the mbed USB CDC port and the modem (LISA) 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 UbloxUSBModem mbed
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C027_ModemTransparentSerial
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u-blox
Install mbed Windows Drivers
Make sure you installed the drivers on your windows PC to get the virtual serial port. A installation guideline and the drivers can be found in the following wiki page. /handbook/Windows-serial-configuration
Revision 2:20ff91824a26, committed 2013-10-25
- Comitter:
- mazgch
- Date:
- Fri Oct 25 20:16:46 2013 +0000
- Parent:
- 1:7334dcb895d0
- Child:
- 3:8d37a7a064f1
- Commit message:
- version for USB CDC
Changed in this revision
| UbloxUSBModem.lib | Show annotated file Show diff for this revision Revisions of this file |
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/UbloxUSBModem.lib Fri Oct 25 20:16:46 2013 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/UbloxUSBModem/#6e9d98f8c237
--- a/main.cpp Wed Oct 23 06:12:48 2013 +0000
+++ b/main.cpp Fri Oct 25 20:16:46 2013 +0000
@@ -1,26 +1,57 @@
#include "mbed.h"
#include "C027_PinNames.h"
+#include "WANDongle.h"
+#include "USBSerialStream.h"
+#include "UbloxCDMAModemInitializer.h"
+#include "UbloxGSMModemInitializer.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(MDMRTS);
- mdmRts = 0; // (not using flow control)
-
+ WANDongle mdmDongle;
+ USBSerialStream mdmStream(mdmDongle.getSerial(0/* the CDC usually 0 or 1*/ ));
+ USBHost* host = USBHost::getHostInst();
+ mdmDongle.addInitializer(new UbloxCDMAModemInitializer(host));
+ mdmDongle.addInitializer(new UbloxGSMModemInitializer(host));
+
// 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());
+ uint8_t buf[64];
+ size_t len;
+ int i;
+ if (!mdmDongle.connected())
+ {
+ mdmDongle.tryConnect();
+ }
+ else
+ {
+ // transfer data from pc to modem
+ len = mdmStream.space();
+ if (len>0)
+ {
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+ for (i = 0; (i < len) && pc.readable(); )
+ buf[i++] = pc.getc();
+ if (OK == mdmStream.write(buf, i))
+ /* what to do here ?*/;
+ }
+ // transfer data from modem to pc
+ len = mdmStream.available();
+ if ((len>0) && pc.writeable())
+ {
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+ if (OK == mdmStream.read(buf, &len, len))
+ {
+ for (i = 0; (i < len); )
+ pc.putc(buf[i++]);
+ }
+ }
+ }
}
}