I've searched the extranet and MQX sample code and I can't identify any I2C code that use the actual registers identified in MVF50GS10MK50.h. Does any exist? I want to make sure before I start writing new code to the raw I2C regs. Polling or interrupt driven is fine. Thanks, Chris
Solved! Go to Solution.
Nice simple driver. I like it. The usage of I2C_Type * could be a bit tricky in terms of how I map the hardware address of the I2C peripheral to the structure. Do you know where the example calling code is?
The LCD I2C code that Anthony was good enough to share was a great starting point for my I2C master driver. It was VERY helpful to have a working example. I think I added some value and took the code to the next level. New features:
- Replace the "byte shifting complete" timing loop with a loop waiting on the hardware indication (the user no longer needs to adjust the timing loop for local CPU clock speed, except for the IBFD value which I haven't had time to figure out, math-wise, it works, I kept going)
- Same with stop condition asserted (don't start another transfer until last one is really stopped, now transfers are closely spaced without timing risk)
- Multi-byte write allowed to a reg number (allows efficient filter table loading into a codec for example)
i2c.h and i2c_vybrid.c form the core package. vybrid_i2c.h are the I2C peripheral register defines. adc3101.c is an example using this new code.
Just trying to give back to the community. Maybe I can save someone else some code development time. I've done a good amount of testing and have verified the low-level operation on a logic analyzer.