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Altera_Forum's avatar
Altera_Forum
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15 years ago

UART wierdness

I'm trying to interface with a cell phone to the DE2 board over serial. I've been able to successfully talk to the phone using my computer and an FTDI cable. I know the baud and all of the other se...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Thanks for your reply. I realized the problem with trying to connect all 3 things, and stopped doing that. I tried connecting the phone directly to the serial port on the DE2. I was able to get the Tx LED on the DE2 to light up for a second when my code sent stuff, so I think it is at least transmitting. I tried connecting the serial port on the DE2 to my computer via the FTDI cable and didn't receive anything. I know the DE2 is at least executing my code to send data, and based on the Tx LED, it is making it to the serial port, but after that I don't know what happens. Tonight I'm going to hook up a logic analyzer to the Tx coming from the DE2 to see what the data actually looks like and if it is really transmitting. I'll post my findings and hopefully it'll be helpful.