Yu-Lun Tsai / Mbed 2 deprecated KetDiary_revision

nRF51822 serves as the bridge between BLE central and MCU, which makes cental able to fetch photos from serial camera.

Dependencies:   BLE_API mbed nRF51822

Fork of nRF51822_blinky by RedBearLab

src/application.cpp@11:b3929de96933, 2016-02-19 (annotated)

Committer:
stormysun513
Date:
Fri Feb 19 10:27:54 2016 +0000
Revision:
11:b3929de96933
I2C LEDs workable

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stormysun513 11:b3929de96933 1 #include "application.h"
stormysun513 11:b3929de96933 2 #include "mbed.h"
stormysun513 11:b3929de96933 3
stormysun513 11:b3929de96933 4 extern Serial pc;
stormysun513 11:b3929de96933 5
stormysun513 11:b3929de96933 6 float readTMP102Temperature(I2C& i2c, char* reg) {
stormysun513 11:b3929de96933 7 const char regAddr = TMP102_TEMP_REG_ADDR;
stormysun513 11:b3929de96933 8 i2c.write(TMP102_ADDR, &regAddr, 1);
stormysun513 11:b3929de96933 9 int result = i2c.read(TMP102_ADDR, reg, 2);
stormysun513 11:b3929de96933 10 if (result != 0)
stormysun513 11:b3929de96933 11 return -1;
stormysun513 11:b3929de96933 12
stormysun513 11:b3929de96933 13 int TemperatureSum = (reg[0] << 8 | reg[1]) >> 4;
stormysun513 11:b3929de96933 14 return (float)TemperatureSum*0.0625;
stormysun513 11:b3929de96933 15 }
stormysun513 11:b3929de96933 16
stormysun513 11:b3929de96933 17 /* AT24C64D */
stormysun513 11:b3929de96933 18 bool writeAT24EEPROMBuffer(I2C& i2c, uint8_t dataAddr, char* buf, uint16_t length){
stormysun513 11:b3929de96933 19 uint8_t tmpBuf[10] = {0,};
stormysun513 11:b3929de96933 20 tmpBuf[0] = dataAddr;
stormysun513 11:b3929de96933 21 if(length > 9)
stormysun513 11:b3929de96933 22 length = 9;
stormysun513 11:b3929de96933 23
stormysun513 11:b3929de96933 24 for(int i = 1; i < (length+1); i++)
stormysun513 11:b3929de96933 25 tmpBuf[i] = buf[i-1];
stormysun513 11:b3929de96933 26
stormysun513 11:b3929de96933 27 int result = i2c.write(EEPROM_ADDR, (char*)tmpBuf, length+1);
stormysun513 11:b3929de96933 28 if (result != 0)
stormysun513 11:b3929de96933 29 return false;
stormysun513 11:b3929de96933 30 else
stormysun513 11:b3929de96933 31 return true;
stormysun513 11:b3929de96933 32 }
stormysun513 11:b3929de96933 33
stormysun513 11:b3929de96933 34 bool readAT24EEPROMBuffer(I2C& i2c, uint8_t dataAddr, char* buf, uint16_t length){
stormysun513 11:b3929de96933 35 int result = i2c.write(EEPROM_ADDR, (char*)&dataAddr, 1);
stormysun513 11:b3929de96933 36 if (result != 0)
stormysun513 11:b3929de96933 37 return false;
stormysun513 11:b3929de96933 38
stormysun513 11:b3929de96933 39 result = i2c.read(EEPROM_ADDR, buf, length);
stormysun513 11:b3929de96933 40 if (result != 0)
stormysun513 11:b3929de96933 41 return false;
stormysun513 11:b3929de96933 42
stormysun513 11:b3929de96933 43 return true;
stormysun513 11:b3929de96933 44 }