xplain-bc: board/xplain-bc/include/board/spi.h Source File

00001 
00038 #ifndef BOARD_SPI_H_INCLUDED
00039 #define BOARD_SPI_H_INCLUDED
00040 
00041 #include <gpio.h>
00042 
00044 enum board_spi_select_id {
00045         BOARD_DATAFLASH_SS = 13, // PORTB pin 5
00046         BOARD_XMEGA_SS = 8,      // PORTB pin 0
00047 };
00048 
00050 typedef enum board_spi_select_id board_spi_select_id_t;
00051 
00053 struct board_spi_select {
00055         gpio_pin_t      pin;
00056 };
00057 
00064 static inline void board_spi_select_device(struct spi_master *master,
00065                 struct board_spi_select *sel)
00066 {
00067         gpio_set_value(sel->pin, false);
00068 }
00069 
00076 static inline void board_spi_deselect_device(struct spi_master *master,
00077                 struct board_spi_select *sel)
00078 {
00079         gpio_set_value(sel->pin, true);
00080 }
00081 
00088 static inline void board_spi_init_select(struct board_spi_select *sel,
00089                 board_spi_select_id_t sel_id)
00090 {
00091         sel->pin = sel_id;
00092         port_select_gpio_pin(sel_id, GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
00093 }
00094 
00095 #endif /* BOARD_SPI_H_INCLUDED */