i2cmaster class without interrupt process
i2cmaster.cpp
- Committer:
- sgrsn
- Date:
- 2017-02-26
- Revision:
- 0:a7ab96dc6a35
File content as of revision 0:a7ab96dc6a35:
#include "i2cmaster.h" i2c::i2c(PinName sda, PinName scl) : I2C(sda, scl) { frequency(400000); } void i2c::sendi2c(char addr, char registar, int data, int size) { if(size > 0) size = size; else if(data > 0xFFFFFF) size = 4; else if(data > 0xFFFF) size = 3; else if(data > 0xFF) size = 2; else size = 1; char DATA[4] = {data & 0xFF, (data>>8) & 0xFF, (data>>16) & 0xFF, (data>>24) & 0xFF}; char i2cData[3] = {size, registar, SendData}; write(addr, i2cData, 3); write(addr, DATA, size); } int i2c::getSlaveData(char addr, char registar, int size) { char i2cData[3] = {size, registar, RequestData}; char getData[12] = {}; write(addr, i2cData, 3); read(addr, getData, size); return getData[0] | (getData[1] << 8) | (getData[2] << 16) | (getData[3] << 24); }