I have a number of programming cables at my disposal. I've got a USBtinyISP, a Mini USB/Serial adapter (with FTDI232 chip) and a Parallax PropPlug (also an FTDI232 chip). With the USBtinyISP, I am able to burn a new bootloader (I loaded Optiboot 4.4 using avrdude in a command line). I can also use the usbtiny to upload a sketch directly to the Arduino using the "Upload using Programmer" function in the Arduino IDE. I've loaded the standard blink program and confirmed that it works.
The trouble is with the two FTDI cables. I'm fine with programming with the usbtiny, but I really need to talk to the arduino over the serial connection to see what's going on. But, neither seems to be able to communicate with the arduino. I confirmed both are working by jumpering the TX and RX lines to see the echo. But I can't upload with them, or view serial messages coming from the arduino. All I get is the standard (and dreaded) response when uploading:
Code: Select all
Using Port : \\.\COM2
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Recv:
avrdude: stk500_getsync(): not in sync: resp=0x00
Please help!