Revision 1:c6ab8afd3e63, committed 2017-07-20

Comitter:

xuaner

Date:

Thu Jul 20 14:25:58 2017 +0000

Parent:

0:2514f1c72462

Commit message:

An I2C library for simulate Arduino's Wire library. ;

Changed in this revision

diff -r 2514f1c72462 -r c6ab8afd3e63 I2C_Driver.cpp
--- a/I2C_Driver.cpp	Tue Aug 23 16:23:15 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,85 +0,0 @@
-/*
-* Driver I2C para Proyecto - Pulsera Saturometrica.
-* Util para implementar rapidamente comunicacion simple I2C.
-* Basado en el driver I2C desarrollado por RedBearLab
-
-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 "I2C_Driver.h"
-#include "mbed.h"
-#include "wire.h"
-
-
-TwoWire Wire = TwoWire(NRF_TWI0);
-
-void ini_i2c( int scl, int sda){
-    Wire.begin(scl, sda, TWI_FREQUENCY_100K);
-}
-
-/*
-WriteByte( addr, *pbuf, length, dev_addr) : escritura i2c en la dirección i2c definida al inicio del programa.
-
-addr:  dirección del registro a ser escrito.
-*pbuf:    dirección (puntero) del array de datos a ser escritos. Dirección 0: LSB
-length:   cantidad de bytes a ser transmitidos.
-dev_addr: Direección física del dispositivo esclavo i2c
-
-*/
-
-int write_i2c(uint8_t addr, uint8_t *pbuf, uint16_t length, uint8_t dev_addr){ //Parámetros: addr: dirección de memoria; *pbuf: puntero de byte 0 del buffer; length: cantidad de bytes a enviar; dev_addr: Direección física del dispositivo esclavo i2c
-    int aux=0;
-    uint8_t aux2[length];
-    uint8_t *aux3;
-    for ( aux = 0; aux < length; aux++ ){
-        aux3 = pbuf+length-(aux+1);
-        aux2[aux]= *aux3;
-    }
-
-    Wire.beginTransmission(dev_addr);
-    Wire.write( (uint8_t)addr );
-    Wire.write(aux2, length);
-    return (Wire.endTransmission());
-}
-
-/*
-ReadByte( addr, *pbuf, length, dev_addr) : lectura i2c en la dirección i2c definida al inicio del programa.
-
-addr:  dirección del registro a ser escrito.
-*pbuf:    dirección (puntero) del array de datos a ser escritos. Dirección 0: LSB
-length:   cantidad de bytes a ser transmitidos.
-dev_addr: Direección física del dispositivo esclavo i2c
-
-*/
-
-int read_i2c(uint8_t addr, uint8_t *pbuf, uint16_t length, uint8_t dev_addr){ //Parámetros: addr: dirección de memoria; *pbuf: puntero de byte 0 del buffer; length: cantidad de bytes a enviar; dev_addr: Direección física del dispositivo esclavo i2c
-    int error=0;
-    
-    Wire.beginTransmission(dev_addr);
-    Wire.write( (uint8_t)addr );    
-    error = Wire.endTransmission();
-    
-    Wire.requestFrom(dev_addr+1, length);
-    
-    pbuf=pbuf+length-1;
-    while( Wire.available() > 0 )
-    {
-        *pbuf = Wire.read();
-        pbuf--;
-    }
-    return(error);
-}
\ No newline at end of file

diff -r 2514f1c72462 -r c6ab8afd3e63 I2C_Driver.h
--- a/I2C_Driver.h	Tue Aug 23 16:23:15 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,14 +0,0 @@
-
-
-#ifndef MBED_I2C_DRIVER_H
-#define MBED_I2C_DRIVER_H
-
-#include "mbed.h"
-#include "wire.h"
-
-void ini_i2c( int scl, int sda);
-int write_i2c(uint8_t addr, uint8_t *pbuf, uint16_t length, uint8_t dev_addr); //Definicion de rutina de escritura.
-int read_i2c(uint8_t addr, uint8_t *pbuf, uint16_t length, uint8_t dev_addr); //Definicion de rutina de lectura.
-
-#endif
-

diff -r 2514f1c72462 -r c6ab8afd3e63 wire.h
--- a/wire.h	Tue Aug 23 16:23:15 2016 +0000
+++ b/wire.h	Thu Jul 20 14:25:58 2017 +0000
@@ -42,8 +42,8 @@
 #define TWI_FREQUENCY_250K              1 
 #define TWI_FREQUENCY_400K              2 
 
-#define TWI_SCL                         28
-#define TWI_SDA                         29
+#define TWI_SCL                         7
+#define TWI_SDA                         30
 
 
 class TwoWire