projects
/
fw
/
altos
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
e0ad8b5
)
altos/lpc: Reset SPI device at startup time
author
Keith Packard
<keithp@keithp.com>
Mon, 20 May 2013 03:27:05 +0000
(20:27 -0700)
committer
Keith Packard
<keithp@keithp.com>
Mon, 20 May 2013 03:39:19 +0000
(20:39 -0700)
Wasn't doing the reset sequence correctly (write 0, then write 1).
Signed-off-by: Keith Packard <keithp@keithp.com>
src/lpc/ao_spi_lpc.c
patch
|
blob
|
history
diff --git
a/src/lpc/ao_spi_lpc.c
b/src/lpc/ao_spi_lpc.c
index ff107e40dd0339fb01eed124f30c282116e1bf7a..c3587698e1d26f55ac1b7b583b2ab76f7707b6ed 100644
(file)
--- a/
src/lpc/ao_spi_lpc.c
+++ b/
src/lpc/ao_spi_lpc.c
@@
-199,7
+199,8
@@
ao_spi_init(void)
/* Turn on the clock */
lpc_scb.ssp1clkdiv = 1;
- /* De-assert reset */
+ /* Reset the device */
+ lpc_scb.presetctrl &= ~(1 << LPC_SCB_PRESETCTRL_SSP1_RST_N);
lpc_scb.presetctrl |= (1 << LPC_SCB_PRESETCTRL_SSP1_RST_N);
ao_spi_channel_init(1);
#endif /* HAS_SPI_1 */