mjb/altos/src/lpc, branch lpc

altos/lpc: Force idle mode if USB gets an address during boot time

2013-05-20T03:39:19+00:00

This lets EasyMini be booted to idle mode by simply plugging it into USB. Signed-off-by: Keith Packard

altos/lpc: Reset SPI device at startup time

2013-05-20T03:39:19+00:00

Wasn't doing the reset sequence correctly (write 0, then write 1). Signed-off-by: Keith Packard

altos/lpc: Configuring wrong pin for SPI1 MOSI

2013-05-20T03:39:19+00:00

Was setting configuration for PIO1_21 instead of PIO0_21. Signed-off-by: Keith Packard

altos/lpc: Allow for alternate SPI SCLK0 pin usage

2013-05-20T03:39:19+00:00

SPI SCLK0 can appear on three different pins; let the application configure which one it wants. Signed-off-by: Keith Packard

altos/lpc: Leave SPI enabled all the time

2013-05-20T03:39:19+00:00

Might be able to turn it off with some care; more experimentation required. Signed-off-by: Keith Packard

altos/lpc: Create TX/RX busy macros for SPI driver

2013-05-20T03:39:19+00:00

Check for both fifo status *and* device busy to make sure the device is idle before we touch any registers. Signed-off-by: Keith Packard

altos/lpc: Fix beeper driver

2013-05-20T03:39:19+00:00

Set prescale limit, not current prescale value (pr instead of pc). Flip output 1 on PWM match (set emc toggle for channel 1). Don't hold counter in reset (turn off CRST bit). Signed-off-by: Keith Packard

altos/lpc: Missing parens around ao_gpio_set macro

2013-05-20T03:39:19+00:00

Signed-off-by: Keith Packard

altos/lpc: SPI runs off main clock (48MHz), not sysclk (24MHz)

2013-05-20T03:39:18+00:00

Update SPI speed definitions to match Signed-off-by: Keith Packard

altos/lpc: Pull ADC data from the correct registers

2013-05-20T03:39:18+00:00

Was just stepping through register space arbitrarily, which would have worked for EasyMini, but might have failed later if the ADC pin usage wasn't consecutive. Signed-off-by: Keith Packard