MicroTouch Micro Touch Capacitive Controller MT3000, Справочное руководство, Страница: 27 / 64

Chapter 2 Communicating with the MT3000 Controller 27
enter a carriage return, ending the command sequence, use Enter or the key
combination Ctrl M (^M).
This chapter lists each command as a string of ASCII control characters and
printable characters consisting of a header, the command, and a terminator
as follows:
<SOH> Command <CR>
Receiving Responses from the Controller
After executing a command, the controller returns a response or
acknowledgment to the host system. Each controller response consists of a
header, the command response, and a terminator in the following format:
<Header>Command Response<Terminator>
Note:
The following descriptions of header, response, and terminator, use
MicroTouch’s terminal emulator key sequences. The format of controller
responses varies depending on the terminal emulation mode you are using.
The header is the first character in the response string and is the ASCII
start-of-header control character SOH. The hexadecimal code for the ASCII
SOH control character is 01. If you are working with an IBM PC compatible
system in terminal mode, the SOH control character returns a
!
character to
the screen.
The response , which always follows the header, is a range of ASCII
characters depending on the type of command received. Responses can be
in many forms.
For example, one standard response is 0 (ASCII character ‘zero’ or 30
hexadecimal). This response indicates a successful command completion
for most commands, while it indicates a failed completion for other
commands. See the firmware reference section for a description of what the
response indicates for
each particular command.
Another standard response is 1 (ASCII character ‘one’ or 31 hexadecimal).
In most cases, this response indicates the command failed. The controller
received an invalid command that it could not execute.