diff options
| author | Keith Packard <keithp@keithp.com> | 2013-05-19 20:25:13 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-05-19 20:39:19 -0700 |
| commit | b9bb088a36fd351809f4c378356327ffa663c974 (patch) | |
| tree | 1b7897ab1650cde3b195406a3d9bbed91986dec0 | |
| parent | 397109139fb9ff27ec7cfb0cafa65d1dbea053bd (diff) | |
altos/lpc: Allow for alternate SPI SCLK0 pin usage
SPI SCLK0 can appear on three different pins; let the application
configure which one it wants.
Signed-off-by: Keith Packard <keithp@keithp.com>
| -rw-r--r-- | src/easymini-v0.1/ao_pins.h | 1 | ||||
| -rw-r--r-- | src/lpc/ao_spi_lpc.c | 16 | ||||
| -rw-r--r-- | src/lpc/lpc.h | 4 |
3 files changed, 18 insertions, 3 deletions
diff --git a/src/easymini-v0.1/ao_pins.h b/src/easymini-v0.1/ao_pins.h index 5bcd4673..2307d7d2 100644 --- a/src/easymini-v0.1/ao_pins.h +++ b/src/easymini-v0.1/ao_pins.h @@ -53,6 +53,7 @@ /* SPI */ #define HAS_SPI_0 1 +#define SPI_SCK0_P0_6 1 #define HAS_SPI_1 1 #define SPI_SCK1_P1_15 1 #define SPI_MISO1_P0_22 1 diff --git a/src/lpc/ao_spi_lpc.c b/src/lpc/ao_spi_lpc.c index 7c830053..12d44872 100644 --- a/src/lpc/ao_spi_lpc.c +++ b/src/lpc/ao_spi_lpc.c @@ -125,7 +125,21 @@ ao_spi_init(void) { #if HAS_SPI_0 /* Configure pins */ - lpc_ioconf.pio0_6 = ao_lpc_alternate(LPC_IOCONF_FUNC_SCK0); +#if SPI_SCK0_P0_6 + lpc_ioconf.pio0_6 = ao_lpc_alternate(LPC_IOCONF_FUNC_PIO0_6_SCK0); +#define HAS_SCK0 +#endif +#if SPI_SCK0_P0_10 + lpc_ioconf.pio0_10 = ao_lpc_alternate(LPC_IOCONF_FUNC_PIO0_10_SCK0); +#define HAS_SCK0 +#endif +#if SPI_SCK0_P1_29 + lpc_ioconf.pio1_29 = ao_lpc_alternate(LPC_IOCONF_FUNC_PIO1_29_SCK0); +#define HAS_SCK0 +#endif +#ifndef HAS_SCK0 +#error "No pin specified for SCK0" +#endif lpc_ioconf.pio0_8 = ao_lpc_alternate(LPC_IOCONF_FUNC_MISO0); lpc_ioconf.pio0_9 = ao_lpc_alternate(LPC_IOCONF_FUNC_MOSI0); diff --git a/src/lpc/lpc.h b/src/lpc/lpc.h index 1b48fcc9..49034c1c 100644 --- a/src/lpc/lpc.h +++ b/src/lpc/lpc.h @@ -131,7 +131,7 @@ extern struct lpc_ioconf lpc_ioconf; /* PIO0_6 */ #define LPC_IOCONF_FUNC_PIO0_6 0 #define LPC_IOCONF_FUNC_USB_CONNECT 1 -#define LPC_IOCONF_FUNC_SCK0 2 +#define LPC_IOCONF_FUNC_PIO0_6_SCK0 2 /* PIO0_7 */ #define LPC_IOCONF_FUNC_PIO0_7 0 @@ -150,7 +150,7 @@ extern struct lpc_ioconf lpc_ioconf; /* PIO0_10 */ #define LPC_IOCONF_FUNC_SWCLK 0 #define LPC_IOCONF_FUNC_PIO0_10 1 -#define LPC_IOCONF_FUNC_SCK0 2 +#define LPC_IOCONF_FUNC_PIO0_10_SCK0 2 #define LPC_IOCONF_FUNC_CT16B0_MAT2 3 /* PIO0_11 */ |