1 files changed, 50 insertions, 0 deletions
diff --git a/firmware/usrp2/lib/i2c_async.h b/firmware/usrp2/lib/i2c_async.h
new file mode 100644
index 000000000..e6095fca6
--- /dev/null
+++ b/firmware/usrp2/lib/i2c_async.h
@@ -0,0 +1,50 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+/*
+ * Copyright 2007,2008 Free Software Foundation, Inc.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INCLUDED_I2C_ASYNC_H
+#define INCLUDED_I2C_ASYNC_H
+
+#include <stdbool.h>
+#include "stdint.h"
+
+typedef enum { I2C_STATE_IDLE, 
+               I2C_STATE_CONTROL_BYTE_SENT, 
+               I2C_STATE_DATA, 
+               I2C_STATE_LAST_BYTE, 
+               I2C_STATE_DATA_READY, 
+               I2C_STATE_ERROR 
+             } i2c_state_t;
+
+typedef enum { I2C_DIR_WRITE=0, I2C_DIR_READ=1 } i2c_dir_t;
+
+bool i2c_async_read(uint8_t addr, unsigned int len);
+bool i2c_async_write(uint8_t addr, const uint8_t *buf, unsigned int len);
+bool i2c_async_data_ready(void *);
+//static void i2c_irq_handler(unsigned irq);
+void i2c_register_callback(void (*callback)(void));
+void i2c_register_handler(void);
+
+// Write 24LC024 / 24LC025 EEPROM on motherboard or daughterboard.
+// Which EEPROM is determined by i2c_addr.  See i2c_addr.h
+
+bool eeprom_write_async (int i2c_addr, int eeprom_offset, const void *buf, int len, void (*callback)(void));
+bool eeprom_read_async(int i2c_addr, int eeprom_offset, void *buf, int len, void (*callback)(void));
+
+#endif /* INCLUDED_I2C_ASYNC_H */