stac 3eceef43d3 spi: Connect device specific DMA IRQ handlers ...

Mark the device specific DMA IRQ handlers as strongly linked
aliases for the genericly named interrupt vector symbol.

Here's how this works...
 * The address of the symbol DMA1_Channel2_IRQHandler is written
   into the DMA1/Channel2 interrupt vector by the linker script.
 * The startup_*.S file specifies Default_Handler() as a weakly
   linked alias for DMA1_Channel2_IRQHandler.
 * We now override the weakly linked alias with the strongly linked
   PIOS_SPI_sdcard_irq_handler().
 * This results in the address of PIOS_SPI_sdcard_irq_handler() being
   written to the vector table for the DMA1/Channel2 interrupt.
 * The PIOS_SPI_sdcard_irq_handler() function is now called whenever
   the DMA1/Channel2 interrupt fires.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1003 ebee16cc-31ac-478f-84a7-5cbb03baadba

2010-07-04 02:21:13 +00:00

..

inc

lowered I2C timoout whne using RTOS

2010-06-21 09:19:02 +00:00

ahrs.c

com/usart: generalize com driver API

2010-06-13 04:24:26 +00:00

Makefile

ahrs: Turn on -Werror for AHRS build

2010-07-04 02:20:54 +00:00

pios_board.c

spi: Connect device specific DMA IRQ handlers

2010-07-04 02:21:13 +00:00