1 files changed, 66 insertions, 0 deletions
diff --git a/common/recipes-utils/bitbang/files/src/bitbang.h b/common/recipes-utils/bitbang/files/src/bitbang.h
new file mode 100644
index 0000000..0f21a49
--- /dev/null
+++ b/common/recipes-utils/bitbang/files/src/bitbang.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2014-present Facebook. All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef BITBANG_H
+#define BITBANG_H
+
+#include <stdint.h>
+
+typedef enum {
+  BITBANG_CLK_PIN,
+  BITBANG_DATA_IN,
+  BITBANG_DATA_OUT,
+} bitbang_pin_type_en;
+
+typedef enum {
+  BITBANG_PIN_LOW = 0,
+  BITBANG_PIN_HIGH = 1,
+} bitbang_pin_value_en;
+
+typedef enum {
+  BITBANG_CLK_EDGE_RISING,
+  BITBANG_CLK_EDGE_FALLING,
+} bitbang_clk_edge_en;
+
+typedef bitbang_pin_value_en  (* bitbang_pin_func)(
+    bitbang_pin_type_en pin, bitbang_pin_value_en value, void *context);
+
+typedef struct {
+  bitbang_pin_value_en bbi_clk_start;
+  bitbang_clk_edge_en bbi_data_out;
+  bitbang_clk_edge_en bbi_data_in;
+  uint32_t bbi_freq;
+  bitbang_pin_func bbi_pin_f;
+  void *bbi_context;
+} bitbang_init_st;
+
+typedef struct bitbang_handle bitbang_handle_st;
+
+void bitbang_init_default(bitbang_init_st *init);
+bitbang_handle_st* bitbang_open(const bitbang_init_st *init);
+void bitbang_close(bitbang_handle_st *hdl);
+
+typedef struct {
+  uint32_t bbio_in_bits;
+  uint32_t bbio_out_bits;
+  uint8_t *bbio_dout;
+  uint8_t *bbio_din;
+} bitbang_io_st;
+
+int bitbang_io(const bitbang_handle_st *hdl, bitbang_io_st *io);
+
+#endif