i have written a code to interface an additional display with a weighing scale. Interface is RS232 and it works on company's proprietary protocol. The scale sends out the value which is displayed on its own display. The pproblem here is that if i turn on this additional display(AD) first and then the scale, the AD remains blank. However, the other way it works fine.
The code is structured in the following manner: 1. Copy data into array(during the execution of this function, the display function is also executed as the baud rate set is 9600bps, and if we just keep waiting for the data the display digits go on-off i.e. illumination of the display varies). P.S. Display is 6 digit, 7-segment display Data bytes are being received on UART0 of MSC1210
2. Transfer data into display array.
Please let me know if more inputs from my side is required.
Sounds like the scale is corrupting a signal when it powers up. For example, it may be sending junk down the RS-232 or it may be violating the RS-232 signal voltage specs.
Hope this is helpful.
Jon