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Events

expr:functions:func-serial_addlistener

serial_addlistener()

Reads data from from serial port and saves it in array. Each time port sends new data, array data is refreshed and callback function is executed.

Syntax

serial_addlistner(port, callback, hnd, size);

Parameters

port COM port name. Use string type ; e.g. “COM10”
function Callback function name
.arg1 - port
.arg2 - array handle
.arg3 - length
hnd Array handle
size Number of bytes to read. Special values are:
-1 - all data in packet is read
baudrate Baudrate value. Available values are: (optional)
4800 - 4800bd
9600 - 9600bd
192200 - 192200bd
115200 - 115200bd
bits Data bits value. Available values are: (optional)
5 - 5 data bits
6 - 6 data bits
7 - 7 data bits
8 - 8 data bits
9 - 9 data bits
parity Parity value. Available values are: (optional)
0 - no parity
1 - odd parity
2 - even parity
stopbits Stop bit value. Available values are: (optional)
0 - no stop bit
1 - one stop bit
2 - two stop bits
stopbits Flowcontrol. Available values are: (optional)
0 - no flow control
1 - flow control enabled
Return Value Number of listeners or zero, if adding failed.

Examples

hnd = array_new();
serial_addlistener("COM10", "#On_Serial_Event", hnd, 8); 
 
#On_Serial_Event
result = array_getdata(.arg2,8);

result:

255

See also

expr/functions/func-serial_addlistener.txt · Last modified: 2024/06/13 10:31 by andrej

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