0xF9 is generally some unexpected error condition

I assume you do have pull ups on both i2c pins (generally 5K or less)

We published this Visual BASIC app that exercises both serial and UDP packets that can be used with the ARMweb.

QEI and timers are separate and should not interact, maybe what you are seeing is not the cause but an effect. How is the motor grounded (how are the MOSFET signal connections made)? The MOSFET GND (where all that motor current it going should NOT go through the same GND as the controller. If the MO...

The Quadrature decoder is separate hardware from the Timers, so I'm not sure how they would interact

I need some more details on how you have them connected up, and what your program is doing.

I2CSPEED is in cor_bitbang.c

Have you ever used grep? There is a version installed with the MakeItC directory.

I allows you to search for text strings in files, and is used by the search in MakeItC, which is another way to find it.

Hey Chris Thanks for the update, if you want to get some PRO format boards, I can get you a couple with the new LPC1114 and LPC812 too. A board for the LPC4357 is in the works too. We can also save you some time on the ISP download code, which has of course changed again, but I do have it running on...

some notes -- Sends and receives UDP Connects to a local server to do POST or GET Connects to a remote server to do POST or GET Shows an example GET from www.time.gov to get the current time Serves a web page that displays that current time and hit count Users must fill in their own IP addresses but...

And this is an example of the code written in C

Here is some sample code that will use a WiFly (Roving Networks aka MicroChip) shield to do an HTTP GET or POST to a webserver.

This is a good way to use WiFi and gather data on an ARM

We often get asked about communicating between a PC and the ARM in BASIC. The USB connection emulates a serial port and can be used to transfer data/control between the PC and the ARM processor. Attached here is a simple example in Visual BASIC that sets up a communication link between a PC and the ...