1 files changed, 55 insertions, 0 deletions
diff --git a/firmware/usrp3/include/wb_spi.h b/firmware/usrp3/include/wb_spi.h
new file mode 100644
index 000000000..ebbb20b16
--- /dev/null
+++ b/firmware/usrp3/include/wb_spi.h
@@ -0,0 +1,55 @@
+
+// Copyright 2012 Ettus Research LLC
+
+#ifndef INCLUDED_WB_SPI_H
+#define INCLUDED_WB_SPI_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef enum {
+    WRITE, WRITE_READ
+} wb_spi_rw_mode_t;
+
+typedef enum {
+    RISING, FALLING
+} wb_spi_edge_t;
+
+typedef struct {
+    void*           base;
+    uint32_t        slave_sel;
+    uint32_t        clk_div;
+    wb_spi_edge_t   mosi_edge;
+    wb_spi_edge_t   miso_edge;
+    bool            lsb_first;
+} wb_spi_slave_t;
+
+/*!
+ * \brief Initialize SPI slave device
+ */
+void wb_spi_init(const wb_spi_slave_t* slave);
+
+/*!
+ * \brief Perform a SPI transaction in auto chip-select mode.
+ */
+inline void wb_spi_transact(const wb_spi_slave_t* slave,
+    wb_spi_rw_mode_t rw_mode, const void* mosi_buf, void* miso_buf, uint32_t length);
+
+/*!
+ * \brief Perform a SPI transaction in manual chip-select mode.
+ */
+inline void wb_spi_transact_man_ss(const wb_spi_slave_t* slave,
+    wb_spi_rw_mode_t rw_mode, const void* mosi_buf, void* miso_buf, uint32_t length);
+
+/*!
+ * \brief Select SPI slave
+ */
+void wb_spi_slave_select(const wb_spi_slave_t* slave);
+
+/*!
+ * \brief Deselect SPI slave
+ */
+void wb_spi_slave_deselect(const wb_spi_slave_t* slave);
+
+#endif /* INCLUDED_WB_SPI_H */