In message 3F002ED5.4050803@peak.uklinux.net you wrote:
Some investigation has shown that I need to set I2C_SDA and I2C_SCL to the name of the correct functions. What are the possibilities for these? The same seems to be true of I2C_READ.
These are macros that define code (think of inline functions) to set the SDA resp. SCL port pin to high (bit=1) or low (bit-0). I2C_READ will read the state of the SDA port pin.
Isn't this obvious from the sources?
What are the units for I2C_DELAY? I'm assuming seconds. Why is there
Again, see the source code. A definition like this should be self-explainatory:
#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */
both I2C_DELAY and CFG_I2C_SPEED to configure? These seem to configure the same thing - the speed of the I2C clock line.
Hysterical reasons. I2C_DELAY => soft_i2c, CFG_I2C_SPEED => hard-i2c
Best regards,
Wolfgang Denk