techage/manuals/ta_iom.md

Techage/Beduino I/O Module

I/O modules support the following functions:

event

Every signal that is sent to an I/O module triggers an event on the controller. Events can be queried using the event() function. If the function returns the value 1, one or more signals have been received. Calling event() resets the event flag.

event()

read

Read a value from a remote techage block.

• port is the I/O module port number
• cmnd is the command, like IO_STATE (see example code "ta_cmnd.c")

read(port, cmnd)

send_cmnd

Send a command to a techage block (see commands).

• port is the I/O module port number
• topic is a number from the list of Beduino commands
• payload is an array or a string with additional information, depending on the command. If no additional commands are required, "" can be used.

send_cmnd(port, topic, payload)

request_data

Request information from a techage block (see commands).

• port is the I/O module port number
• topic is a number from the list of Beduino commands
• payload is an array or a string with additional information, depending on the command. If no additional commands are required, "" can be used.
• resp is an array for the response data. The array must be defined large enough to hold the response data.

request_data(port, topic, payload, resp)

Functions for TA4 Display and TA4 Display XL

clear_screen

Clear the display.

• port is the I/O module port number

clear_screen(port)

append_line

Add a new line to the display.

• port is the I/O module port number
• text is the text for one line

append_line(port, text)

write_line

Overwrite a text line with the given string.

• port is the I/O module port number
• row ist the display line/row (1-5)
• text is the text for one line

write_line(port, row, text)