FullDuplexSerial perplexed

steprog

Hi Guys,
I got an issue with the fullduplexserial object. I set up 3 uarts. One for going to the terminal, one for simulating data being sent to me, and one that communicates to some other equipment.

With 3 uarts and 3 different lines being used, I figured this would work, however my transmission goes out the same uart not three.

Here is the code Ignore the comments, I had to put them in to get my integration to work. Please forgive any sloppyness, really in a hurry.
Any ideas would be appreciated.


debug.start(pcDebugRX,pcDebugTX,Mode,pcDebugBaud) ' start the PC debug object
uart1.start(RX1,TX1,Mode, pcDebugBaud)
uart2.start(RX2,TX2,Mode, pcDebugBaud)
debug.rxflush
uart1.rxflush
uart2.rxflush

' Test Only
Checksum:=$24
ComByte:= $22

uart1.tx(Sync[0])
uart1.tx(Sync[1])
uart1.tx(Checksum)
uart1.tx(ComByte)
waitcnt(clkfreq*3 + cnt) ' wait for PC to reply

comtest:= uart2.rx
comtest2:= uart2.rx
'' debug.tx(13)
' display(string("Received"))
' debug.hex(comtest,2)
' debug.hex(comtest2,2)
' debug.tx(13)



if comtest == $CA and comtest2 == $35
' display(string("Good Sync "))
Checksum:= uart2.rx
ComByte:= uart2.rx
' debug.hex(Checksum,2)
' debug.str (@space)
' debug.hex(ComByte,2)
' debug.tx(13)
DoCheckSum
If DoCheckSum
ParcCommand
else
Error[1]:=$01
ParcCommand
CreateCheckSum
SendStatus
else
uart2.rxflush

PRI SendStatus
debug.tx(Sync[0])
debug.tx(Sync[1])
debug.tx(CheckSum)
debug.tx(ComByte)
debug.tx(Error[0])
debug.tx(Error[1])
debug.tx(Therm1[0])
debug.tx(Therm1[1])
debug.tx(Therm2[0])
debug.tx(Therm2[1])
debug.tx(Therm3[0])
debug.tx(Therm3[1])
debug.tx(Therm4[0])
debug.tx(Therm4[1])
{
display(string("transmit")) 'For USB output
debug.hex(Sync[0],2)
debug.hex(Sync[1],2)
debug.str (@space)
debug.hex(CheckSum,2)
debug.str (@space)
debug.hex(ComByte,2)
debug.str (@space)
debug.hex(Error[0],2)
debug.hex(Error[1],2)
debug.tx(13)
debug.hex(Therm1[0],2)
debug.hex(Therm1[1],2)
debug.str (@space)
debug.hex(Therm2[0],2)
debug.hex(Therm2[1],2)
debug.str (@space)
debug.hex(Therm3[0],2)
debug.hex(Therm3[1],2)
debug.str (@space)
debug.hex(Therm4[0],2)
debug.hex(Therm4[1],2)
debug.tx(13)
}

Mike Green

From the partial piece of code you've shown, there's nothing that would explain what's happening. Debug, Uart1, and Uart2 are different objects, all referring to different I/O pins (I hope). I think Debug uses FullDuplexSerial internally and all 3 instances should be in separate cogs working independently. There must be something you're not showing that would explain what's going on.

steprog

Hi Mike,
I think that is pretty much it. I will look it over, but you apparently see no reason it shouldn't work.
Thats good.
Thanks so far,
Greg

Brian Carpenter

Can you show us your constants? If you havent stated the correct pins, this could be the case. Any chance we can take a look at that part?

What pins do you have assigned to the following

pcDebugRX
pcDebugTX
RX1
TX1
RX2
TX2

steprog

Here you go.
Thanks,
Greg


pcDebugRX = 31
pcDebugTX = 30

RX1 = 2
TX1 = 3
RX2 = 14
TX2 = 15

' RX2 = 29
' TX2 = 28

' serial baud rates
pcDebugBaud = 38400
Mode = 0