mjb/altos/src/lpc/ao_spi_lpc.c, branch v1.6.3.1

altos/lpc: Give up on interrupt-driven SPI driver

2015-02-07T09:05:57+00:00

There are just too many limitations in when interrupts are delivered to make them useful. Instead, just drive the SPI directly with the CPU. At higher spi speeds (6Mhz or more), it's probably faster to do it this way anyways. Signed-off-by: Keith Packard

altos/lpc: Switch LPC SPI driver to interrupt-driven

2014-12-23T01:27:09+00:00

This improves performance for SPI transfers, while allowing other tasks to get work done during longer SPI transfers. Signed-off-by: Keith Packard

altos/lpc: Declare SPI send parameters as const

2014-11-07T00:04:14+00:00

This matches STM Signed-off-by: Keith Packard

altos: Clean up warnings for LPC products

2013-12-21T06:59:35+00:00

Unused varibles, functions and parameters. Signed-off-by: Keith Packard

altos/lpc: Remove spurious semicolon

2013-06-17T05:31:58+00:00

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