Diff: main.cpp

Revision:

0:34c256ab7309

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Dec 01 02:07:49 2014 +0000
@@ -0,0 +1,115 @@
+/*
+
+Copyright (c) 2012-2014 RedBearLab
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+and associated documentation files (the "Software"), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#include "mbed.h"
+#include "wire.h"
+
+#define BLE_Nano
+//#define nRF_51822
+
+
+#ifdef nRF_51822
+#define SCL         28
+#define SDA         29
+#endif
+
+#ifdef BLE_Nano
+#define SCL         7  
+#define SDA         6
+#endif
+
+#define DEV_ADDR    0xA0
+
+Serial pc(USBTX, USBRX);
+TwoWire Wire = TwoWire(NRF_TWI0);
+
+void AT24C512_WriteBytes(uint16_t addr, uint8_t *pbuf, uint16_t length)
+{
+    Wire.beginTransmission(DEV_ADDR);
+    Wire.write( (uint8_t)addr>>8 );
+    Wire.write( (uint8_t)addr );
+    Wire.write(pbuf, length);
+    Wire.endTransmission();
+}
+
+void AT24C512_ReadBytes(uint16_t addr, uint8_t *pbuf, uint16_t length)
+{
+    Wire.beginTransmission(DEV_ADDR);
+    Wire.write( (uint8_t)addr>>8 );
+    Wire.write( (uint8_t)addr );    
+    Wire.endTransmission();
+       
+    Wire.requestFrom(DEV_ADDR+1, length);
+    while( Wire.available() > 0 )
+    {
+        *pbuf = Wire.read();
+        pbuf++;
+    }
+}
+
+
+static uint8_t wt_data[10] = {'H', 'e', 'l', 'l', 'o', 'W', 'o', 'r', 'l', 'd'};
+static uint8_t rd_data[10];
+
+static uint16_t index;
+
+int main(void)
+{
+    pc.baud(9600);
+    wait(5);
+    //Wire.begin();
+    Wire.begin(SCL, SDA, TWI_FREQUENCY_100K);
+    pc.printf("IIC Demo Start \r\n");
+    
+    AT24C512_WriteBytes(0, wt_data, 10);
+    wait(0.1);
+    
+    while(1)
+    {
+        AT24C512_ReadBytes(0, rd_data, 10);     
+        pc.printf("Read data from AT24C512 \r\n");
+        for(index=0; index<10; index++)
+        {
+            pc.putc(rd_data[index]);
+            rd_data[index] = 0x00;
+        }
+        pc.printf("\r\n");
+        wait(1);
+    }
+}
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