first commit

project/realtek_ameba1_va0_example/example_sources/i2c/readme.txt

@@ -0,0 +1,14 @@
+Example Description
+
+This example describes how to use i2c by using mbed api
+
+1.Connect LOG-UART connector to PC
+  
+2.Connect 
+  - I2C3 SDA (PB_3) to I2C1 SDA (PC_4) pin,
+  - I2C3 SCL (PB_2) to I2C1 SCL (PC_5) pin.
+  
+3.Run the main function.
+
+4.Get the Master and Slave Data.
+

project/realtek_ameba1_va0_example/example_sources/i2c/src/main.c

@@ -0,0 +1,80 @@
+/*
+ *  Routines to access hardware
+ *
+ *  Copyright (c) 2013 Realtek Semiconductor Corp.
+ *
+ *  This module is a confidential and proprietary property of RealTek and
+ *  possession or use of this module requires written permission of RealTek.
+ */
+
+#include "PinNames.h"
+#include "basic_types.h"
+#include "diag.h"
+#include <osdep_api.h>
+
+#include "i2c_api.h"
+#include "pinmap.h"
+
+#if 1
+#define MBED_I2C_MTR_SDA    PB_3
+#define MBED_I2C_MTR_SCL    PB_2
+
+#define MBED_I2C_SLV_SDA    PC_4
+#define MBED_I2C_SLV_SCL    PC_5
+#endif
+
+#define MBED_I2C_SLAVE_ADDR0    0xAA
+#define MBED_I2C_BUS_CLK        100000  //hz
+
+#define I2C_DATA_LENGTH         8
+const char i2cdatasrc[I2C_DATA_LENGTH] = { 0x55, 0xAA, 0x5A, 0xA5, 
+                                           0xFF, 0x11, 0x00, 0xF1  };
+char       i2cdatadst[I2C_DATA_LENGTH];
+
+#if defined (__ICCARM__)
+i2c_t   i2cmaster;
+i2c_t   i2cslave;
+#else
+volatile i2c_t   i2cmaster;
+volatile i2c_t   i2cslave;
+#endif
+
+void main(void)
+{
+    int     i2clocalcnt;
+
+    int     result = 0;
+
+    i2c_init(&i2cmaster, MBED_I2C_MTR_SDA ,MBED_I2C_MTR_SCL);
+    i2c_frequency(&i2cmaster,MBED_I2C_BUS_CLK);
+
+    i2c_init(&i2cslave, MBED_I2C_SLV_SDA ,MBED_I2C_SLV_SCL);
+    i2c_frequency(&i2cslave,MBED_I2C_BUS_CLK);
+    i2c_slave_address(&i2cslave, 0, MBED_I2C_SLAVE_ADDR0, 0xFF);
+    i2c_slave_mode(&i2cslave, 1);
+
+    i2c_write(&i2cmaster, MBED_I2C_SLAVE_ADDR0, &i2cdatasrc[0], I2C_DATA_LENGTH, 1);
+
+    DBG_8195A("master write...\n");
+
+    if (i2c_slave_receive(&i2cslave) == 3) {
+        i2c_slave_read(&i2cslave, &i2cdatadst[0], I2C_DATA_LENGTH);
+    }
+
+    DBG_8195A("show slave received data\n");
+    for (i2clocalcnt = 0; i2clocalcnt < I2C_DATA_LENGTH; i2clocalcnt+=2) {
+        DBG_8195A("i2c data: %02x \t %02x\n",i2cdatadst[i2clocalcnt],i2cdatadst[i2clocalcnt+1]);
+    }
+
+    // verify result
+    result = 1;
+    for (i2clocalcnt = 0; i2clocalcnt < I2C_DATA_LENGTH; i2clocalcnt++) {
+        if (i2cdatasrc[i2clocalcnt] != i2cdatadst[i2clocalcnt]) {
+            result = 0;
+            break;
+        }
+    }
+    printf("\r\nResult is %s\r\n", (result) ? "success" : "fail");
+
+    while(1){;}
+}