Mosaic
Well-Known Member
Two questions:
1) If a PIC circuit has it's own 5V pwr then it is possible that there is a small voltage difference between the 5V supplied by the PL2303 usb connector and the built in PIC supply. Is it advisable to include a small resistance (2-10 ohms) in the 5V connection between the PIC supply and the incoming PL2303 5V line to limit current flows due to the voltage difference?
2) I am running 9600 baud using a 16F886 USART., uploading ascii data. I am getting 'lost' characters, perhaps 3% average loss.Quite random lost chars. I can resend from the PIC over and over and keep losing different chars. Should I drop the speed to 4800bps? Or can I implement some kind of protocol?
Thx
Ancel
1) If a PIC circuit has it's own 5V pwr then it is possible that there is a small voltage difference between the 5V supplied by the PL2303 usb connector and the built in PIC supply. Is it advisable to include a small resistance (2-10 ohms) in the 5V connection between the PIC supply and the incoming PL2303 5V line to limit current flows due to the voltage difference?
2) I am running 9600 baud using a 16F886 USART., uploading ascii data. I am getting 'lost' characters, perhaps 3% average loss.Quite random lost chars. I can resend from the PIC over and over and keep losing different chars. Should I drop the speed to 4800bps? Or can I implement some kind of protocol?
Thx
Ancel