v1.0.0

* Initial release for SX1302 CoreCell Reference Design.

libloragw/inc/loragw_i2c.h

@@ -0,0 +1,75 @@
+/*
+ / _____)             _              | |
+( (____  _____ ____ _| |_ _____  ____| |__
+ \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+  (C)2019 Semtech
+
+Description:
+    Host specific functions to address the LoRa concentrator I2C peripherals.
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+*/
+
+
+#ifndef _LORAGW_I2C_H
+#define _LORAGW_I2C_H
+
+/* -------------------------------------------------------------------------- */
+/* --- DEPENDANCIES --------------------------------------------------------- */
+
+#include <stdint.h>        /* C99 types*/
+
+#include "config.h"    /* library configuration options (dynamically generated) */
+
+/* -------------------------------------------------------------------------- */
+/* --- PUBLIC CONSTANTS ----------------------------------------------------- */
+
+#define LGW_I2C_SUCCESS     0
+#define LGW_I2C_ERROR       -1
+
+#define I2C_DEVICE          "/dev/i2c-1"
+
+/* -------------------------------------------------------------------------- */
+/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */
+
+/**
+@brief Open I2C port
+@param path         Path to the I2C device driver (absolute or relative)
+@param device_addr  Address of the device
+@param i2c_fd      Pointer to receive I2C port file descriptor index
+@return 0 if I2C port was open successfully, -1 else
+*/
+int i2c_linuxdev_open(const char *path, uint8_t device_addr, int *i2c_fd);
+
+/**
+@brief Close I2C port
+@param i2c_fd      I2C port file descriptor index
+@return 0 if I2C port was closed successfully, -1 else
+*/
+int i2c_linuxdev_close(int i2c_fd);
+
+/**
+@brief Read data from an I2C port
+@param i2c_fd      I2C port file descriptor index
+@param device_addr  I2C device address
+@param reg_addr     Address of the register to be read
+@param data         Pointer to a buffer to store read data
+@return 0 if I2C data read is successful, -1 else
+*/
+int i2c_linuxdev_read(int i2c_fd, uint8_t device_addr, uint8_t reg_addr, uint8_t *data);
+
+/**
+@brief Write data to an I2C port
+@param i2c_fd      I2C port file descriptor index
+@param device_addr  I2C device address
+@param reg_addr     Address of the register to write to
+@param data         byte to write in the register
+@return 0 if I2C data write is successful, -1 else
+*/
+int i2c_linuxdev_write(int i2c_fd, uint8_t device_addr, uint8_t reg_addr, uint8_t data);
+
+#endif
+
+/* --- EOF ------------------------------------------------------------------ */