![]() ![]() I'll try to chenge C code, but this sequence was correctly working when using Gambas instead C. Constant used when the serial port has 5 data bits. Constant used when the serial port has two stop bits. Constant used when the serial port has one stop bit. >I have also used Gambas to communicate with PLC's >using Modbus RTU and crc16 at 9600 baud with high volume short >interval requests over >RS485 networks and up to 20 nodes. >This is not a very >high speed system as changes may be seconds or >minutes. Now Arduino waits until RTS is high again, in this case transmission is completed, new data is processed, then restarts sequence. SerialPort (gb.net) Stream class, so you can use standard streams methods to send and receive data, and to close the port. Using an input from the >terminal the Gambas software sends an ASCII message via the uart to >the Uno and it >will execute the request (change points or >signals) and send back an ASCII message the request was executed. Checking code and using oscilloscope, Arduino pulls CTS low to say 'data ready', than waits for RTS low (ready to receive), then data is sent.ĪLL data sent continously, then there is a timer for 100ms delay to keep led on after last sent byte, then CTS signal returns in idle state. Arduino is not sending the data 'continously'. 'This is a tested and fully operational example for how to use GAMBAS for serial. Watch this space! © 2023 by Going Places. Just click “Edit Text” or double click me to add your own content and make changes to the font. Click here to add your own text and edit me. A thread documanting my trials and tribulations using a serial port in Linux. I have an old fashioned model railway - H0 scale - which baseboard plus track stands lonely in my hall. Is there anybody who works with serial ports under ubuntu (with gambas) A little help would be highly appreciated. But when I send more data from my program they seems not arriving correctly. >From the gtkterm they seems working with short commands so I was optimistic. Gambas Serial Port Send 4,5/5 8949reviews I have some serial port cards we added later for having enough interface. ![]()
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