feurig/libmaplemidi-cma/libmaple/i2c_private.h, branch master

i2c_dev: deprecate .gpio_port.

2012-06-22T18:06:10+00:00

This won't work on F2, which at times has SDA and SCL on different ports (e.g. I2C3 SDA on PC9, SCL on PA8). Add .sda_port and .scl_port replacements, which are used when the now-deprecated .gpio_port is null. Use them correctly everywhere, with some new i2c_private.h helper functionality. Sigh. The F1 I2C code tries too hard to guess what you wanted; it's not porting well at all. Signed-off-by: Marti Bolivar

I2C: Move nonportable CCR/TRISE configuration.

2012-06-22T18:06:10+00:00

Do this via new private _i2c_set_ccr_trise(). Signed-off-by: Marti Bolivar

I2C: Restore on F1, refactoring prep for F2.

2012-06-22T18:06:09+00:00

Bring back support on STM32F1 with a view towards how it'll be implemented on STM32F2. There are still many F1-isms in libmaple/i2c.c and , to be dealt with subsequently. Move device declarations and base pointer definitions to a new F1 . The register maps and bit definitions themselves are identical on both series, so leave them in the libmaple header. Add i2c_private.h, which contains: - I2C_DEV(), a convenience macro for defining an i2c_dev, and - declarations for the event and error IRQ handlers. The IRQ handlers are large, and I2C is slow anyway, so I see no reason to make them inline in the private header (as we do for some other peripherals). We just expose the existing ones that were formerly static in libmaple/i2c.c, but prefix the names with underscore. Move the device declarations and IRQ handlers into new stm32f1/i2c.c. These use the i2c_private.h API. Signed-off-by: Marti Bolivar