Revision 0:aa70f7963d9f, committed 2015-07-13

Comitter:

Jamess

Date:

Mon Jul 13 17:40:42 2015 +0000

Commit message:

Leitura do sensor de fluxo analogico e dos aceler?metros utilizando I2C

Changed in this revision

diff -r 000000000000 -r aa70f7963d9f main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jul 13 17:40:42 2015 +0000
@@ -0,0 +1,184 @@
+// Juntando a programação do sensor de fluxo com o acelerômetro
+// por Thiago
+
+// Criado dia 02/03/2015
+//
+
+#include "mbed.h"
+
+/*-------ADXL345-------*/
+
+// When SDO grounded
+#define ADXL1_ADDR_WRITE 0xA6
+#define ADXL1_ADDR_READ 0xA7
+#define ADXL1_ADDR 0X53
+
+//When SDO high
+#define ADXL2_ADDR_WRITE 0x3A
+#define ADXL2_ADDR_READ 0x3B
+#define ADXL2_ADDR 0x53
+
+//Registers
+
+#define POWER_CTL 0x2D
+#define DATA_FORMAT 0x31
+#define DATAX0 0x32
+#define DATAX1 0x33
+#define DATAY0 0x34
+#define DATAY1 0x35
+#define DATAZ0 0x36
+#define DATAZ1 0x37
+#define OFSX 0x1D
+#define OFSY 0x1F
+#define OFSZ 0x20
+#define BW_RATE 0x2C
+
+/*----Transmicao----*/
+
+I2C i2c(PTC2,PTC1);    
+Serial pc(USBTX,USBRX);
+
+/*-----Funcoes------*/
+
+// Acelerômetro:
+int RegisterWrite(char,char,char);
+int RegisterRead(char,char);
+inline void MultByteRead(char,char,char*,int);
+void GetOutput(char,int*);
+
+// Sensor de Fluxo:
+AnalogIn ain(PTB3);
+DigitalOut led2(LED2);  // Led red
+void HandlerT1(void);
+void rx_Handler(void);
+
+Ticker t1;              // Timer to send data
+
+volatile bool STATUS = true;
+char test = 0;
+
+int main()
+{
+
+/*-----------------INICIALIZA SENSOR DE FLUXO-----------*/
+    pc.baud(9600);
+    pc.attach(&rx_Handler, pc.RxIrq);
+    led2=0;
+
+
+/*------------------INICIALIZA ACELEROMETRO-------------*/
+int readings[3] = {0,0,0};
+    printf("Entrou no main");   //Debug.
+    
+    i2c.frequency(100000);  //100kHz
+
+// Testa Envio:
+    pc.printf("Sending POWER CONTROL\t");
+    STATUS = RegisterWrite(ADXL1_ADDR,POWER_CTL,0x00);
+
+     if (STATUS != 0){
+      pc.printf("WRITE NO SUCCESS\t");
+     }
+    else{
+      pc.printf("ACKNOLEDGE RECEIVED");
+     }
+
+    wait(0.1);
+      pc.printf("Sending Data Format\t");
+
+    RegisterWrite(ADXL1_ADDR,DATA_FORMAT,0x09); // 
+
+    RegisterWrite(ADXL1_ADDR,BW_RATE,0x0A);     // Default Value... 100kHZ
+
+    RegisterWrite(ADXL1_ADDR,POWER_CTL,0x08);   // MeasurementMode
+    
+
+/*-------------Setting the Offset Value---------------*/
+
+    RegisterWrite(ADXL1_ADDR,OFSX,0xFD);
+    RegisterWrite(ADXL1_ADDR,OFSY,0x03);
+    RegisterWrite(ADXL1_ADDR,OFSZ,0xFE);
+
+/*----------------------------------------------------*/
+
+    wait(0.1);
+    printf("Now, trying to read data\t");
+    printf("%i", RegisterRead(ADXL1_ADDR,0x00));
+    
+    if (STATUS == 0){
+      printf("READ SUCCESSFULL\t");
+    }
+    else {
+      printf("READ NOT SUCCESSFUL\n");
+    }    
+        
+    pc.printf("Press 2 to Start");
+
+    while(1) {
+
+        wait(0.5);                                  // Debug
+        led2 = 0;
+        pc.putc(test);                             // Debug
+
+        if (test == '2') {
+            t1.attach(&HandlerT1, 0.01);
+        }
+
+        while(test == '2') {
+
+            if (STATUS == true) {
+
+                STATUS = false;
+                led2 = 1;
+                pc.printf("0x%04X",ain.read_u16());
+            GetOutput(ADXL1_ADDR,readings);
+            pc.printf("%i,%i,%i\n",(int16_t)readings[0],(int16_t)readings[1],(int16_t)readings[2]);
+         }
+
+
+        } //end of while(test=='2'){}
+
+        t1.detach();    // Detaches timer interruption when not needed
+    }//end of while(1)
+}//end of main
+
+void HandlerT1(void)
+{
+    STATUS = true;
+}
+
+void rx_Handler(void)
+{
+    test = pc.getc();
+    pc.putc(test);
+}
+
+int RegisterWrite(char SLAVE, char RegAddress, char Data){
+    char cmd[2];
+    cmd[0]= RegAddress;
+    cmd[1]= Data;
+    int ack = i2c.write((SLAVE<<1),cmd,2);
+    return ack;
+    }
+    
+int RegisterRead(char SLAVE, char address){
+    char output;
+    char tx = address; 
+    i2c.write((SLAVE<<1),&tx,1);
+    STATUS = i2c.read((SLAVE<<1), &output,1);
+    return output;
+    } 
+    
+inline void MultRegisterRead(char SLAVE, char address,char*output,int size){
+    i2c.write((SLAVE<<1),&address,1);
+    i2c.read((SLAVE<<1),output,size);
+    return;    
+    }
+
+void GetOutput(char SLAVE, int* readings){
+    char buffer[6];
+    MultRegisterRead(SLAVE,DATAX0,buffer, 6);
+    readings[0] = (int)buffer[1] << 8 | (int)buffer[0];
+    readings[1] = (int)buffer[3] << 8 | (int)buffer[2];
+    readings[2] = (int)buffer[5] << 8 | (int)buffer[4];        
+    }
\ No newline at end of file

diff -r 000000000000 -r aa70f7963d9f mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Jul 13 17:40:42 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/9ad691361fac
\ No newline at end of file