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SakuraIO

Fork of SakuraIO by SAKURA Internet

SakuraIO_I2C.cpp@0:8d34375d954c, 2016-11-19 (annotated)

Committer:
spiralray
Date:
Sat Nov 19 03:20:17 2016 +0000
Revision:
0:8d34375d954c
Child:
1:20e1dfe45dab
First commit(This only works with SPI)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
spiralray 0:8d34375d954c 1 #include "mbed.h"
spiralray 0:8d34375d954c 2 #include "SakuraIO.h"
spiralray 0:8d34375d954c 3 #include "SakuraIO/debug.h"
spiralray 0:8d34375d954c 4
spiralray 0:8d34375d954c 5 #define SAKURAIO_SLAVE_ADDR 0x4F
spiralray 0:8d34375d954c 6
spiralray 0:8d34375d954c 7 #define MODE_IDLE 0x00
spiralray 0:8d34375d954c 8 #define MODE_WRITE 0x01
spiralray 0:8d34375d954c 9 #define MODE_READ 0x02
spiralray 0:8d34375d954c 10
spiralray 0:8d34375d954c 11 void SakuraIO_I2C::begin(){
spiralray 0:8d34375d954c 12 mode = MODE_IDLE;
spiralray 0:8d34375d954c 13 }
spiralray 0:8d34375d954c 14
spiralray 0:8d34375d954c 15 void SakuraIO_I2C::end(){
spiralray 0:8d34375d954c 16 switch(mode){
spiralray 0:8d34375d954c 17 case MODE_WRITE:
spiralray 0:8d34375d954c 18 i2c.stop();
spiralray 0:8d34375d954c 19 break;
spiralray 0:8d34375d954c 20 case MODE_READ:
spiralray 0:8d34375d954c 21 i2c.read(true);
spiralray 0:8d34375d954c 22 break;
spiralray 0:8d34375d954c 23 }
spiralray 0:8d34375d954c 24
spiralray 0:8d34375d954c 25 mode = MODE_IDLE;
spiralray 0:8d34375d954c 26 }
spiralray 0:8d34375d954c 27
spiralray 0:8d34375d954c 28 void SakuraIO_I2C::sendByte(uint8_t data){
spiralray 0:8d34375d954c 29 if(mode != MODE_WRITE){
spiralray 0:8d34375d954c 30 dbgln("beginTr");
spiralray 0:8d34375d954c 31 i2c.start();
spiralray 0:8d34375d954c 32 i2c.write(SAKURAIO_SLAVE_ADDR<<1);
spiralray 0:8d34375d954c 33 mode = MODE_WRITE;
spiralray 0:8d34375d954c 34 }
spiralray 0:8d34375d954c 35 dbg("Write=");
spiralray 0:8d34375d954c 36 dbgln(data);
spiralray 0:8d34375d954c 37 i2c.write(data);
spiralray 0:8d34375d954c 38 }
spiralray 0:8d34375d954c 39
spiralray 0:8d34375d954c 40
spiralray 0:8d34375d954c 41 uint8_t SakuraIO_I2C::startReceive(uint8_t length){
spiralray 0:8d34375d954c 42 dbgln("endTransmission");
spiralray 0:8d34375d954c 43 i2c.stop();
spiralray 0:8d34375d954c 44 dbg("requestForm=");
spiralray 0:8d34375d954c 45 dbgln(length);
spiralray 0:8d34375d954c 46 i2c.start();
spiralray 0:8d34375d954c 47 i2c.write(SAKURAIO_SLAVE_ADDR<<1 | 1);
spiralray 0:8d34375d954c 48 mode = MODE_READ;
spiralray 0:8d34375d954c 49 }
spiralray 0:8d34375d954c 50
spiralray 0:8d34375d954c 51 uint8_t SakuraIO_I2C::receiveByte(){
spiralray 0:8d34375d954c 52 return i2c.read(true);
spiralray 0:8d34375d954c 53 }
spiralray 0:8d34375d954c 54
spiralray 0:8d34375d954c 55 uint8_t SakuraIO_I2C::receiveByte(bool stop){
spiralray 0:8d34375d954c 56 uint8_t ret = 0;
spiralray 0:8d34375d954c 57 ret = i2c.read(!stop);
spiralray 0:8d34375d954c 58 dbg("Read=");
spiralray 0:8d34375d954c 59 dbgln(ret);
spiralray 0:8d34375d954c 60 return ret;
spiralray 0:8d34375d954c 61 }
spiralray 0:8d34375d954c 62
spiralray 0:8d34375d954c 63 SakuraIO_I2C::SakuraIO_I2C(I2C &_i2c): i2c(_i2c){
spiralray 0:8d34375d954c 64 mode = MODE_IDLE;
spiralray 0:8d34375d954c 65 }