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HACK: Cut power on release of power button

This commit is contained in:
Stefan Richter 2011-06-22 23:50:44 +02:00
parent cb406b286c
commit 0a9fab9abe
1 changed files with 30 additions and 0 deletions
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30
nuttx/arch/arm/src/calypso/calypso_keypad.c
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@ -50,6 +50,33 @@
#include <arch/calypso/timer.h>
/****************************************************************************
* Power control
****************************************************************************/
#include <stdio.h>
#include <nuttx/spi.h>
int poweroff(void)
{
uint16_t tx;
struct spi_dev_s *spi = up_spiinitialize(0);
printf("cutting power...\n\n");
usleep(10000);
SPI_SETBITS(spi, 16);
tx = (1 << 6) | (1 << 1);
SPI_SNDBLOCK(spi, &tx, 1);
tx = (1 << 6) | (30 << 1);
SPI_SNDBLOCK(spi, &tx, 1);
return 0;
}
/****************************************************************************
* HW access
****************************************************************************/
@ -135,6 +162,9 @@ static int pwr_btn_dec(uint32_t *state, uint8_t reg, char *buf, size_t *len)
} else {
/* Check for released power button. */
if(*state & 0x80000000) {
/* XXX: just cut power, pending better solution */
poweroff();
buf[0] = 'Z';
*len = 1;