Diff: main.cpp

Revision:

0:34bad5aca893

Child:

1:2efeed26d93a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 20 02:50:57 2014 +0000
@@ -0,0 +1,131 @@
+//Hat Board Test by James Cooke 3/18/2014
+//Goal of  program: read and output data from LIS3DH accelerometer
+//Started with Si_4088_PC working program: able to get data from Si1142 on new hat board
+
+// Check PS_ADC_COUNTER.  It's probably wrong.
+
+#include "mbed.h"
+#include "SI_LIS.h"
+#include <time.h>
+
+DigitalOut  myled3(LED3);
+DigitalOut  myled4(LED4);
+Serial      pc(USBTX,USBRX);
+DigitalIn   int_pin(p8);
+Timer       t;
+
+int         reading_IR,reading_660,LSB,MSB;
+char        rx_data[4];
+char        accel_2_data[2];
+char        temp_val;
+char        accel_data;   // for getting 8-bit value from accelerometer
+short int   temp_dataX;     // short int: 16 bits.  This allows easy negative results
+short int   temp_dataY;     // short int: 16 bits.  This allows easy negative results
+short int   temp_dataZ;     // short int: 16 bits.  This allows easy negative results
+
+/* From AccelWaveForms
+In Loop:
+            Get_Accel_Register(0x2A, LIS_Addr);  //Y Data Low
+            LSB = Accel_Data;
+            Get_Accel_Register(0x2B, LIS_Addr);  //Y Data High
+            MSB = Accel_Data;
+            temp_dataY = (MSB * 256) + LSB;
+
+            Get_Accel_Register(0x2C, LIS_Addr);  //Z Data Low
+            LSB = Accel_Data;
+            Get_Accel_Register(0x2D, LIS_Addr);  //Z Data High
+            MSB = Accel_Data;
+            temp_dataZ = (MSB * 256) + LSB;
+*/
+
+int main()
+{
+    unsigned char LowB_IR,HighB_IR,LowB_660,HighB_660;
+    char    Reg_Val = 0x00;
+    char    Reg_Num;
+
+    myled4 = 0;  // ODD: if this line not included, there is a compiler "internal error"
+    pc.baud(230400);
+    i2c_start();        //sets i2c bus at 400,000.  Also set by photodiode setup/reset
+
+    Reg_Num = 0x20; // CTRL_REG1
+    Reg_Val = 0x57; // Nib 1 of 0101: Normal mode, 100 Hz;  Nib 2 of 0111: Normal mode, XYZ enabled
+    Init_Accel (Reg_Num, Reg_Val);
+
+    wait(0.050);    // Delay needed, or 2nd write doesn't work
+
+    Reg_Num = 0x21; // CTRL_REG2
+    Reg_Val = 0xA0; // 7-6 10: Normal filter mode;  5-4 10: Cut off freq; 3-0 0000: bypass interrupts
+    // High-pass filter bits 5-4: @ 100 Hz:  00 - 2Hz   01 - 1Hz   10- 0.5Hz   11- 0.2Hz
+    Init_Accel (Reg_Num, Reg_Val);
+    wait(0.050);    // Delay needed?
+
+    pc.printf ("Hello\n");
+
+    Get_Accel_Register (0x0F);
+    pc.printf ("I am: %x",accel_data);  //in hex
+
+    while (1) {
+        Get_Accel_Register(0x28);  //X Data Low
+        LSB = accel_data;
+        Get_Accel_Register(0x29);  //X Data High
+        MSB = accel_data;
+        temp_dataX = (MSB * 256) + LSB;
+        pc.printf ("%d ",temp_dataX);  
+        
+        Get_Accel_Register_2 (0x28);
+        LSB = accel_2_data[0];
+        MSB = accel_2_data[1];
+        temp_dataX = (MSB * 256) + LSB;
+        pc.printf ("%d\n",temp_dataX);  
+
+/*
+void Get_Accel_Register_2 (char Reg_Num) // Read 2 registers
+{
+    char  reg;
+    reg = Reg_Num;
+    i2c.write((LIS_Addr << 1) & 0xFE, &reg, 1);
+    i2c.read((LIS_Addr << 1) | 0x01, accel_2_data, 2);
+}
+*/        
+        wait(0.02);
+    }
+    /*
+        restart();
+        wait_ms(30);
+        command (PS_AUTO);   //start measuring
+        wait (0.5);
+
+        while(1) {
+            if(!int_pin) {
+
+                myled3 = !myled3;      // LED on mbed, to follow along
+
+    //        t.reset();
+    //        t.start();
+                write_reg(IRQ_STATUS,0x04);  // clear the interrupt.
+
+                read_reg2(PS1_DATA0);
+                LowB_IR = rx_data[0];
+                HighB_IR = rx_data[1];
+
+                LowB_660 = rx_data[2];
+                HighB_660 = rx_data[3];
+
+                reading_IR = (HighB_IR * 256) + LowB_IR;
+                reading_660 = (HighB_660 * 256) + LowB_660;
+
+                pc.printf ("%d,%d\n", reading_IR,reading_660);
+            }
+        }
+    */
+
+}
+/*
+Notes on RJ-45: Pin 1: Vcc  Pin 2: GND  Pin 3: SDA > 9 on 4088
+                Pin 4: SCL >> 10 on 4088  Pin 6: INT > 8 on 4088
+
+Bluetooth:  Tx on 4088: Pin 37 >> RX   Rx on 4088: Pin 31 >> TX
+PC COMM port on Square board: 12
+
+*/
\ No newline at end of file