mjb/altos/src/stm/ao_i2c_stm.c, branch telemini

name change from MegaMetrum to TeleMega

2013-04-22T19:00:26+00:00

altos: Switch drivers to ao_arch_block/release_interrupts

2012-10-25T18:25:42+00:00

Stop using cli/sei, which are avr-specific Signed-off-by: Keith Packard

altos: Clean up STM I2C clock computations

2012-06-28T00:18:57+00:00

Fix both clock time and rise time. Signed-off-by: Keith Packard

altos: get MPU6000 I2C link working reliably

2012-06-27T21:38:35+00:00

This slows the i2c bus to 100kHz (yuck), sets the rise time to spec (it was way off) and adds more delays during bus setup. I've run this for hours now without trouble. Will try to adjust things back to fast mode and see if I can make that work as 100kHz isn't fast enough to reliably get data at 100 samples/sec. Signed-off-by: Keith Packard

altos: Wait for i2c START condition before setting interrupt bits

2012-06-27T09:46:27+00:00

This seems better than the random loop that it replaces, but I still have no idea why this is required; it doesn't coorespond to the docs at all... Signed-off-by: Keith Packard

altos: stm i2c debug code was calling flush() even when disabled

2012-06-27T08:19:05+00:00

The fancy stm i2c debugging code had calls to flush() that were invoked outside of the conditionals leading to all kinds of fun -- flush() may re-enable interrupts, yield or do all kinds of wacky stuff, none of which is appropriate from the middle of a device driver Signed-off-by: Keith Packard

altos: mpu6000 requires a delay during start

2012-06-27T08:17:51+00:00

I have no idea why this is required, but the mpu6000 will not come up and run if this isn't present. Signed-off-by: Keith Packard

altos: Reset i2c controller at boot time

2012-06-02T23:56:41+00:00

In case it's wedged. Signed-off-by: Keith Packard

altos: Clear stm i2c transfer timeout alarm

2012-05-28T17:47:28+00:00

Signed-off-by: Keith Packard

altos: stm: share i2c_stop code between send and recv

2012-05-08T04:47:17+00:00

This waits for the stop signal to appear on the bus, necessary before starting another transaction. Signed-off-by: Keith Packard