MicroTouch Micro Touch Capacitive Controller MT3000, Справочное руководство, Страница: 53 / 64

Chapter 2 Communicating with the MT3000 Controller 53
Parameter Set
Syntax:
<SOH> Ppds [ b ]<CR>
where:
p = Parity type.
N = No parity
O = Odd parity
E = Even parity
d = Number of data bits (
7 or 8 ).
s = Number of stop bits (
1 or 2 ).
b = Communication rate.
1 = 19200 baud 4 = 2400 baud
2 = 9600 baud 5 = 1200 baud
3 = 4800 baud
Description:
Lets you adjust the communication parameters (parity, data bits, and stop
bits) of the controller. Optionally, you can change the communication rate
by appending an additional character to the command string. Upon
execution of the Parameter Set command, the controller automatically stores
the new settings, the current operating mode, and the current data format in
NovRAM.
The communication parameters of the host system must match the present
settings of the controller when the command is given for it to be accepted
and the changes implemented.
The process of changing the parameters takes three steps:
•
The host system must first communicate with the controller using a
matched set of parameters.
•
The Parameter Set command is issued with the new parameters to the
controller. The new settings take effect immediately.
•
The host system must be changed to the new parameters in order to
communicate with the controller again.