evmaker:
Most all of my simple sketches seem to run on my due. However I have not found out how to go into a register and modify a single bit yet, I would dearly love to go to 0x40094000 and change bit# 19 to a zero.
I have been trying with word, bitWrite, and bitClear with no success. Bit read seems to work and the write protect register seems to be off for this byte. All I want to do is change one bit. Getting a little frustrated. Might have to box the due until there is more docks and stuff. The mega 2560 has no problem with simple stuff like this.
From the Techpaper you http://www.atmel.com/Images/doc11057.pdf Page 1020
This register can only be written if the bits WPSWS0 and WPHWS0 are cleared
Forward to Page 1053...
If I understud it right the Register 0x400940E8 (PWM_WPSR) needs only be read to set bits on Register 0x40094000