SPI refactor.

Still a polling driver, but the libmaple proper interface exposes
enough that users enable the various interrupts and define their own
IRQ handlers if they feel like it.

Wirish HardwareSPI interface was largely redone; it's more like the
Arduino implementation now, although there are some differences when I
didn't like their API.  The old methods are still there, but are
deprecated and slated for deletion in 0.1.0.

New board-specific values: BOARD_NR_SPI, BOARD_SPIx_NSS_PIN,
BOARD_SPIx_MOSI_PIN, BOARD_SPIx_MISO_PIN, and BOARD_SPIx_SCK_PIN, for
x from 1 to BOARD_NR_SPI.

Documentation was updated appropriately.

1 files changed, 13 insertions, 0 deletions

diff --git a/wirish/boards/maple.h b/wirish/boards/maple.h
index 4a4465c..4b55f7a 100644
--- a/wirish/boards/maple.h
+++ b/wirish/boards/maple.h
@@ -52,6 +52,19 @@
 #define BOARD_USART3_TX_PIN     29
 #define BOARD_USART3_RX_PIN     30
 
+/* Number of SPI ports */
+#define BOARD_NR_SPI            2
+
+/* Default SPI pin numbers (not considering AFIO remap) */
+#define BOARD_SPI1_NSS_PIN      10
+#define BOARD_SPI1_MOSI_PIN     11
+#define BOARD_SPI1_MISO_PIN     12
+#define BOARD_SPI1_SCK_PIN      13
+#define BOARD_SPI2_NSS_PIN      31
+#define BOARD_SPI2_MOSI_PIN     34
+#define BOARD_SPI2_MISO_PIN     33
+#define BOARD_SPI2_SCK_PIN      32
+
 /* Total number of GPIO pins that are broken out to headers and
  * intended for general use. */
 #define BOARD_NR_GPIO_PINS      44