When sending serial data to Touch-Base for analysis please either send a screenshot of the captured HEX data or select Capture to text fileįor Linux install instructions are included in the download package, 'Linux System Requirements.txt'. This old serial device outputs a 'heartbeat' packet 'FF 80 00 00' and a 3 byte data packet when touched - D5 58 30 (touching packet), 95 58 2F (lift off packet) in the example data captured below: The most common Baudrate is 9600, followed by 240: Setting the wrong Baudrate will result in strange garbled data being captured/displayed.
When capturing data it is important to match the Baudrate to that expected by the device. In this Windows example CoolTerm is connected to Com3 (a keyspan serial to USB adapter) with a serial touch screen connected. Comprehensive testingįor all Operating Systems there is also a simple serial port terminal application program called CoolTerm that may also be of use. To view the actual data use a software datascope as described below. This does not show the actual data received just that data is being received.
In the following example a Keyspan serial adaptor is listed and tested by touching an attached touch screen: To test if a com port is working and receiving data type 'cat < /dev/' in a Terminal program (Finder, Go, Utilities, Terminal) and use the serial device. The best way to test this is the case is to use an external process to prove the above is true before specifying the port name in the UPDD driver.įor a quick test of a RS232 port open up a terminal / command window, type the command shown and touch the screen: OSĬat < /dev/ttySN' (or ttyUSBn if using a serial to usb adaptor) Successful support of a serial device is dependent on the RS232 communications settings being correct, the com port being available (if it exists and is not in use by another driver) and that the data is being seen on the port in the correct data format.
0 kommentar(er)
