After considerable googling I've come to query the masters (looking at you maniacbug,crossroads & westfw). I am having trouble getting SoftwareSerial working with my Sanguino1284p.
I am using maniacbug's latest firmware, the optiboot 16mhz flavor, with Arduino 1.01.
I had previously been using Arduino0023 & NewSoftSerial with this exact same hardware setup and an older firmware without any problems.
I am using both the hardware ports already.
I am using pins 19,20. RX,TX respectively.
I am using the TimedAction lib to poll every 500 millis.
I am using the TX pin for the sparkfun serial LCD using the serLCD library. This is working fine. I am not writing to it very frequently.
I am using the RX pin for a barcode scanner from sparkfun.
All of this was hunky dory under 0023 and older firmware. I am at the point now where I guess I am going to flash back unless you guys have some wisdom for me...
I saw http://arduino.cc/forum/index.php/topic,80483.msg725186.html#msg725186
and it sounds like Madhu was also getting TX to work but not RX.
RX is interrupt driven in SoftwareSerial. I noticed that maniacbug said he derived his bootloader from westfw's optiboot. Looking at the optiboot 4.5 github I see that it says there was an experimental change from using USART0 to USART1 for sketch uploading and that this is considered a beta change. I am wondering if this has something to do with it...
I tried disabling the Serial.begin()'s for my two hardware ports.
I am calling .listen() before I check if there is data available.