test1
Dependencies: BLE_API mbed nRF51822
Fork of I2C_Demo by
main.cpp
00001 /* 00002 00003 Copyright (c) 2012-2014 RedBearLab 00004 00005 Permission is hereby granted, free of charge, to any person obtaining a copy of this software 00006 and associated documentation files (the "Software"), to deal in the Software without restriction, 00007 including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 00008 and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 00009 subject to the following conditions: 00010 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 00011 00012 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 00013 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 00014 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 00015 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 00016 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00017 00018 */ 00019 00020 #include "mbed.h" 00021 #include "wire.h" 00022 00023 #define BLE_Nano 00024 //#define nRF_51822 00025 00026 00027 #ifdef nRF_51822 00028 #define SCL 28 00029 #define SDA 29 00030 #endif 00031 00032 #ifdef BLE_Nano 00033 #define SCL 7 00034 #define SDA 6 00035 #endif 00036 00037 #define DEV_ADDR 0xA0 00038 00039 Serial pc(USBTX, USBRX); 00040 TwoWire Wire = TwoWire(NRF_TWI0); 00041 00042 void AT24C512_WriteBytes(uint16_t addr, uint8_t *pbuf, uint16_t length) 00043 { 00044 Wire.beginTransmission(DEV_ADDR); 00045 Wire.write( (uint8_t)addr>>8 ); 00046 Wire.write( (uint8_t)addr ); 00047 Wire.write(pbuf, length); 00048 Wire.endTransmission(); 00049 } 00050 00051 void AT24C512_ReadBytes(uint16_t addr, uint8_t *pbuf, uint16_t length) 00052 { 00053 Wire.beginTransmission(DEV_ADDR); 00054 Wire.write( (uint8_t)addr>>8 ); 00055 Wire.write( (uint8_t)addr ); 00056 Wire.endTransmission(); 00057 00058 Wire.requestFrom(DEV_ADDR+1, length); 00059 while( Wire.available() > 0 ) 00060 { 00061 *pbuf = Wire.read(); 00062 pbuf++; 00063 } 00064 } 00065 00066 00067 static uint8_t wt_data[10] = {'H', 'e', 'l', 'l', 'o', 'W', 'o', 'r', 'l', 'd'}; 00068 static uint8_t rd_data[10]; 00069 00070 static uint16_t index; 00071 00072 int main(void) 00073 { 00074 pc.baud(9600); 00075 wait(5); 00076 //Wire.begin(); 00077 Wire.begin(SCL, SDA, TWI_FREQUENCY_100K); 00078 pc.printf("IIC Demo Start \r\n"); 00079 00080 AT24C512_WriteBytes(0, wt_data, 10); 00081 wait(0.1); 00082 00083 while(1) 00084 { 00085 AT24C512_ReadBytes(0, rd_data, 10); 00086 pc.printf("Read data from AT24C512 \r\n"); 00087 for(index=0; index<10; index++) 00088 { 00089 pc.putc(rd_data[index]); 00090 rd_data[index] = 0x00; 00091 } 00092 pc.printf("\r\n"); 00093 wait(1); 00094 } 00095 } 00096 00097 00098 00099 00100 00101 00102 00103 00104 00105 00106 00107 00108 00109 00110 00111 00112 00113 00114 00115
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