Hi,

I am working on a project that use 8051 MCU. The project required to print ADC reading collected by the MCU to a portable thermal printer for user to keep as record.

As a result, I have bought CMP-10 thermal printer and interface with the MCU via RS232.

There are a list of commands that the MCU needs to send to the printer:

http://www.goodson.com.au/support/D...itizen.htm

(please look for CMP-10)

To be sure that I send correct commands to the printer, I connected it to my PC via serial port then set all setting required (e.g. BAUD rate, parity, etc...) in HyperTerminal. In the terminal, I sent commands like "BEL", or "ESC RS" or "LF" to test to see if the printer execute those. But nothing happened.

With the little time left for the project, any advice from you guys will be very much appreciated.

Thank you,