4 years, 8 months ago.

Ublox C027 Exported project, No Reply from Modem

When i try online editor and write bin file to MBED drive work like a charm. But when I export the code for Lpcxpresso IDE or IAR and compile the code... and write to device.

Writing method I try to write the bin MBED drive as usual also I tried to write binary [Program Flash button] in Lpcxpresso

I got this error.

Modem::wakeup  0.276 AT send 4 "AT\r\n" 1.580 AT send 4 "AT\r\n" 2.883 AT send 4 "AT\r\n" 4.186 AT send 4 "AT\r\n" 5.489 AT send 4 "AT\r\n" 6.792 AT send 4 "AT\r\n" 8.095 AT send 4 "AT\r\n" 9.398 AT send 4 "AT\r\n" 10.701 AT send 4 "AT\r\n" 12.005 AT send 4 "AT\r\n" No Reply from Modem

I checked the LISA-U module <->MCU RX TX pins. there is no data outcoming. when the code compiled in Mbed online I can see AT commands on those pins.

do you have an Idea how to make it work? --------------------

Version LPCXpresso v7.9.0 [Build 455] [2015-07-23] IAR 6.3

Question relating to:

support library for C027 helper functions for Buffer Pipes, Buffered Serial Port (rtos capable) and GPS parsing. It includes modem APIs for USSD, SMS and Sockets. C027, u-blox

4 Answers

4 years, 1 month ago.

i also have the same problem. The other example, TransparentModem, doesn't work too, either in lpcexpresso or keil.

4 years, 7 months ago.

I have the same problem. Did you already found a solution?

4 years, 7 months ago.

Hi Greenteam,

it might be a good idea to check your flow control settings on AP.

Regards, Jaka

3 years, 7 months ago.

I also have the same problem.

Problem still continues for LpcXpresso