Hi, I have an Arduino Duemilanove ATMega328 with a Grove luminance sensor connect to A1 on a Grove Base shield running the demo sketch. I had this program working on an UNO but I'm having problems with the DUE.
From the IDE the Verify/Compile is OK.
Upload is OK.
The program is supposed to print sensor output to the serial monitor at 9600 baud but I get an 'Serial port COM 1 (port busy) error when I run the Serial monitor to view the sensor output.
I've heard that a PC restart solves this program. If I reboot the PC (cold or warm) and go back into the IDE the serial monitor starts OK but theres no output from the previously programmed DUE.
Note there are two lit LEDs on the DUE board, one lit green and the other flashing continuously yellow.
I vaugley recall when I ran this same configuration with the UNO board I had to send something to the board via the serial monitors 'send' box but I can't recall what exactly that was.
IDE shows in Tools/Programmer AVRISP mkII
Base shield is set to 3.3v, which this sensor operates at.
In the IDE Tools/get board information there is no entry, which is odd.
Hopefully these notes above will allow someone to give me a hint at what I'm doing wrong here, as the programs supposed to print sensor readings to the serial monitor and that's not happening. Any ideas appreciated.