Add firmware for the ATUSB IEEE 802.15.4 USB Adapter

[linux-libre-firmware.git] / atusb / spi.h

diff --git a/atusb/spi.h b/atusb/spi.h
new file mode 100644 (file)
index 0000000..6e04f4e
--- /dev/null
+++ b/atusb/spi.h
@@ -0,0 +1,30 @@
+/*
+ * fw/spi.h - ATmega8 family SPI I/O
+ *
+ * Written 2011, 2013 by Werner Almesberger
+ * Copyright 2011, 2013 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef SPI_H
+#define        SPI_H
+
+#include <stdint.h>
+
+
+void spi_begin(void);
+uint8_t spi_io(uint8_t v);
+void spi_end(void);
+void spi_off(void);
+void spi_init(void);
+
+#define        spi_send(v)     (void) spi_io(v)
+#define        spi_recv(v)     spi_io(0)
+
+void spi_recv_block(uint8_t *buf, uint8_t n);
+
+#endif /* !SPI_H */