Sending hex data by sim900

[nta_xyz]

Hi, I am trying to send and receive data by sim900 from GPRS.

every thing is fine but I can only send and receive 00 to 7f.
I think, I should set a setting like AT+CSCS but for GPRS connection.

could you please help me how I should send and receive data form 00 to FF ?

 

[Batang]

Do you want to send data via SMS or TCP/UDP?

If it is SMS then you need to use PDU encoding if via TCP/UDP then you need to use "Fixed Length Sending" as follows:

Use the AT+CIPSEND=<Length> command, the data is automatically sent when the number of bytes to send is equal to the length value.

There will be no > prompt and no need to send Control Z.

Cheers.