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Bug fix: put device in standby mode at startup in case it has previously been put in deep power-down mode; patch by Martin Bor

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nifi 2010-10-12 22:55:11 +00:00
parent a292ff9fe6
commit 9a4d17fe7c
1 changed files with 9 additions and 1 deletions
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10
platform/sky/dev/xmem.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* @(#)$Id: xmem.c,v 1.11 2010/06/23 10:18:05 joxe Exp $ * @(#)$Id: xmem.c,v 1.12 2010/10/12 22:55:11 nifi Exp $
*/ */
/** /**
@ -147,12 +147,20 @@ erase_sector(unsigned long offset)
void void
xmem_init(void) xmem_init(void)
{ {
int s;
spi_init(); spi_init();
P4DIR |= BV(FLASH_CS) | BV(FLASH_HOLD) | BV(FLASH_PWR); P4DIR |= BV(FLASH_CS) | BV(FLASH_HOLD) | BV(FLASH_PWR);
P4OUT |= BV(FLASH_PWR); /* P4.3 Output, turn on power! */ P4OUT |= BV(FLASH_PWR); /* P4.3 Output, turn on power! */
/* Release from Deep Power-down */
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE_FAST(SPI_FLASH_INS_RES);
SPI_WAITFORTx_ENDED();
SPI_FLASH_DISABLE(); /* Unselect flash. */ SPI_FLASH_DISABLE(); /* Unselect flash. */
splx(s);
SPI_FLASH_UNHOLD(); SPI_FLASH_UNHOLD();
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/