Nicholas Herriot / Mbed 2 deprecated MMA8452_test

A test utility for mma8452

Dependencies:   MMA8452 mbed

main.cpp@4:489573e65d47, 2013-10-16 (annotated)

Committer:
nherriot
Date:
Wed Oct 16 14:12:28 2013 +0000
Revision:
4:489573e65d47
Parent:
3:6d888ac31d2c
Child:
5:34fa5db89a3a
A test utility for the mma8452 accelerometer.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
matsu 0:904e837fccc5 1 #include "mbed.h"
nherriot 2:0587772b03b0 2 //#include <bitset>
nherriot 2:0587772b03b0 3 #include "MMA8452.h"
nherriot 4:489573e65d47 4 #include "helperFunctions.h"
nherriot 2:0587772b03b0 5
nherriot 2:0587772b03b0 6 // I2C i2c(p28,p27);
nherriot 3:6d888ac31d2c 7 Accelerometer_MMA8452 accelerometer(p28, p27, 40000);
nherriot 3:6d888ac31d2c 8 //Accelerometer_MMA8452 acclerometer(p28, p29);
nherriot 2:0587772b03b0 9
matsu 0:904e837fccc5 10 Serial pc(USBTX, USBRX);
matsu 0:904e837fccc5 11 DigitalOut led1(LED1);
matsu 0:904e837fccc5 12 DigitalOut led2(LED2);
matsu 0:904e837fccc5 13 DigitalOut led3(LED3);
matsu 0:904e837fccc5 14
nherriot 4:489573e65d47 15
nherriot 4:489573e65d47 16
nherriot 4:489573e65d47 17
nherriot 4:489573e65d47 18
nherriot 4:489573e65d47 19
nherriot 4:489573e65d47 20
nherriot 4:489573e65d47 21
nherriot 4:489573e65d47 22
matsu 0:904e837fccc5 23 int main() {
matsu 0:904e837fccc5 24 led1 = 0;
matsu 0:904e837fccc5 25 led2 = 0;
matsu 0:904e837fccc5 26 led3 = 0;
matsu 0:904e837fccc5 27 char cmd[6];
matsu 0:904e837fccc5 28 char add[1];
matsu 0:904e837fccc5 29 char init[2];
nherriot 4:489573e65d47 30 add[0] = OUT_X_MSB; // x-axis register
nherriot 4:489573e65d47 31 init[0] = CTRL_REG_1; // control register 1
nherriot 4:489573e65d47 32 init[1] = 0x01; // sets the accelerometer to active
matsu 0:904e837fccc5 33 int number=0;
nherriot 4:489573e65d47 34 char x_buffer[2]; // used to store a bit array from the x axis acclerometer
nherriot 4:489573e65d47 35 char y_buffer[2]; // this represents the raw data value from the acclerometer
nherriot 4:489573e65d47 36 char z_buffer[2]; // which is converted from 12bit to 16bit value 2s compliment.
matsu 0:904e837fccc5 37
nherriot 2:0587772b03b0 38 // just playing with address values
nherriot 2:0587772b03b0 39 char mcu_address = 0x00;
nherriot 2:0587772b03b0 40 pc.printf("\nmcu_address is: 0x%x ", mcu_address);
nherriot 2:0587772b03b0 41 mcu_address = MMA8452_ADDRESS;
nherriot 2:0587772b03b0 42 pc.printf("\nmcu_address is: 0x%x ", mcu_address);
nherriot 3:6d888ac31d2c 43 mcu_address = (MMA8452_ADDRESS<< 1); // shifting address by 1 bit as i2c is a 7 bit encoding, and this is 8bit encoded
nherriot 2:0587772b03b0 44 pc.printf("\nmcu_address is now : 0x%x ", mcu_address);
nherriot 2:0587772b03b0 45
matsu 0:904e837fccc5 46 wait(0.5);
matsu 0:904e837fccc5 47 //init
nherriot 2:0587772b03b0 48 //set active mode
nherriot 3:6d888ac31d2c 49 pc.printf("\nWriting to master register\n");
nherriot 4:489573e65d47 50 for (int i=0;i<=50;i++)
nherriot 4:489573e65d47 51 {
nherriot 4:489573e65d47 52 int deviceSystemMode= 0;
nherriot 4:489573e65d47 53 if (accelerometer.get_SystemMode(deviceSystemMode)==0)
nherriot 4:489573e65d47 54 {
nherriot 4:489573e65d47 55 pc.printf("\nGot the device System Mode - device system mode which is: 0x%x \n", deviceSystemMode);
nherriot 4:489573e65d47 56 }
nherriot 4:489573e65d47 57 else
nherriot 3:6d888ac31d2c 58 {
nherriot 4:489573e65d47 59 pc.printf("\nFailed to get the device system mode. The id is set as: 0x%x ", deviceSystemMode);
nherriot 4:489573e65d47 60
nherriot 4:489573e65d47 61 }
nherriot 4:489573e65d47 62
nherriot 4:489573e65d47 63 int deviceStatus = 0;
nherriot 4:489573e65d47 64 if (accelerometer.get_Status(deviceStatus)==0)
nherriot 4:489573e65d47 65 {
nherriot 4:489573e65d47 66 pc.printf("\nGot the device Status - device status which is: 0x%x \n", deviceStatus);
nherriot 4:489573e65d47 67 }
nherriot 4:489573e65d47 68 else
nherriot 4:489573e65d47 69 {
nherriot 4:489573e65d47 70 pc.printf("\nFailed to get the device status. The id is set as: 0x%x ", deviceStatus);
nherriot 4:489573e65d47 71
nherriot 4:489573e65d47 72 }
nherriot 4:489573e65d47 73
nherriot 4:489573e65d47 74
nherriot 4:489573e65d47 75
nherriot 3:6d888ac31d2c 76 if (accelerometer.activate()==0)
nherriot 3:6d888ac31d2c 77 {
nherriot 3:6d888ac31d2c 78 led1 = 1;
nherriot 3:6d888ac31d2c 79 led2 = 1;
nherriot 3:6d888ac31d2c 80 led3 = 1;
nherriot 3:6d888ac31d2c 81 pc.printf("\nActivated chip\n");
nherriot 3:6d888ac31d2c 82 wait(0.5);
nherriot 4:489573e65d47 83
nherriot 4:489573e65d47 84 //int x=0;//int y=0;int z=0;
nherriot 4:489573e65d47 85 for(int i=0; i<5;i++)
nherriot 3:6d888ac31d2c 86 {
nherriot 4:489573e65d47 87
nherriot 4:489573e65d47 88
nherriot 4:489573e65d47 89 if (accelerometer.read_x_raw(x_buffer)==0)
nherriot 4:489573e65d47 90 {
nherriot 4:489573e65d47 91 //pc.printf("\nThe x-axis LSB is: 0x%x", x);
nherriot 4:489573e65d47 92 pc.printf("The value of my x_buffer[0] in digit form is: %d in hex: 0x%x \n",x_buffer[0],x_buffer[0]);
nherriot 4:489573e65d47 93 pc.printf("The value of my x_buffer[1] in digit form is: %d in hex: 0x%x \n",x_buffer[1],x_buffer[1]);
nherriot 4:489573e65d47 94 print2bytebinchar(x_buffer);
nherriot 4:489573e65d47 95
nherriot 4:489573e65d47 96 }
nherriot 4:489573e65d47 97 else
nherriot 4:489573e65d47 98 {
nherriot 4:489573e65d47 99 pc.printf("\nError - could not get xaxis LSB! ....\n");
nherriot 4:489573e65d47 100 }
nherriot 4:489573e65d47 101
nherriot 4:489573e65d47 102
nherriot 3:6d888ac31d2c 103
nherriot 4:489573e65d47 104 if (accelerometer.read_y_raw(y_buffer)==0)
nherriot 4:489573e65d47 105 {
nherriot 4:489573e65d47 106 //pc.printf("\nThe x-axis LSB is: 0x%x", x);
nherriot 4:489573e65d47 107 pc.printf("The value of my y_buffer[0] in digit form is: %d in hex: 0x%x \n",y_buffer[0],y_buffer[0]);
nherriot 4:489573e65d47 108 pc.printf("The value of my y_buffer[1] in digit form is: %d in hex: 0x%x \n",y_buffer[1],y_buffer[1]);
nherriot 4:489573e65d47 109 print2bytebinchar(y_buffer);
nherriot 4:489573e65d47 110
nherriot 4:489573e65d47 111 }
nherriot 4:489573e65d47 112 else
nherriot 4:489573e65d47 113 {
nherriot 4:489573e65d47 114 pc.printf("\nError - could not get yaxis LSB! ....\n");
nherriot 4:489573e65d47 115 }
nherriot 4:489573e65d47 116
nherriot 4:489573e65d47 117
nherriot 4:489573e65d47 118
nherriot 4:489573e65d47 119 if (accelerometer.read_z_raw(z_buffer)==0)
nherriot 4:489573e65d47 120 {
nherriot 4:489573e65d47 121 //pc.printf("\nThe x-axis LSB is: 0x%x", x);
nherriot 4:489573e65d47 122 pc.printf("The value of my z_buffer[0] in digit form is: %d in hex: 0x%x \n",z_buffer[0],z_buffer[0]);
nherriot 4:489573e65d47 123 pc.printf("The value of my z_buffer[1] in digit form is: %d in hex: 0x%x \n",z_buffer[1],z_buffer[1]);
nherriot 4:489573e65d47 124 print2bytebinchar(y_buffer);
nherriot 4:489573e65d47 125
nherriot 4:489573e65d47 126 }
nherriot 4:489573e65d47 127 else
nherriot 4:489573e65d47 128 {
nherriot 4:489573e65d47 129 pc.printf("\nError - could not get zaxis LSB! ....\n");
nherriot 4:489573e65d47 130 }
nherriot 4:489573e65d47 131
nherriot 4:489573e65d47 132
nherriot 4:489573e65d47 133
nherriot 4:489573e65d47 134 //y = accelerometer.read_y();
nherriot 4:489573e65d47 135
nherriot 4:489573e65d47 136 //pc.printf("\nAxis acceleration in x is: %i , y is: %i, z is %z \n", x,y,z);
nherriot 4:489573e65d47 137 wait(1);
nherriot 4:489573e65d47 138 }
nherriot 3:6d888ac31d2c 139 }
nherriot 3:6d888ac31d2c 140 else
nherriot 3:6d888ac31d2c 141 {
nherriot 3:6d888ac31d2c 142 pc.printf("Could not activate the chip\n");
nherriot 3:6d888ac31d2c 143 }
nherriot 4:489573e65d47 144
nherriot 4:489573e65d47 145
nherriot 4:489573e65d47 146 int deviceID= 0;
nherriot 4:489573e65d47 147 if (accelerometer.get_DeviceID(deviceID)==0)
nherriot 4:489573e65d47 148 {
nherriot 4:489573e65d47 149 pc.printf("\nGot the who am I - device id which is: 0x%x \n", deviceID);
nherriot 4:489573e65d47 150 }
nherriot 4:489573e65d47 151 else
nherriot 4:489573e65d47 152 {
nherriot 4:489573e65d47 153 pc.printf("\nFailed to get the device id. The id is set as: 0x%x ", deviceID);
nherriot 4:489573e65d47 154
nherriot 4:489573e65d47 155 }
nherriot 4:489573e65d47 156
nherriot 4:489573e65d47 157 if (accelerometer.get_Status(deviceStatus)==0)
nherriot 4:489573e65d47 158 {
nherriot 4:489573e65d47 159 pc.printf("\nGot the device Status - device system mode which is: 0x%x \n", deviceSystemMode);
nherriot 4:489573e65d47 160 }
nherriot 4:489573e65d47 161 else
nherriot 4:489573e65d47 162 {
nherriot 4:489573e65d47 163 pc.printf("\nFailed to get the device system mode. The id is set as: 0x%x ", deviceSystemMode);
nherriot 4:489573e65d47 164
nherriot 4:489573e65d47 165 }
nherriot 4:489573e65d47 166
nherriot 4:489573e65d47 167 wait(3);
nherriot 4:489573e65d47 168
nherriot 4:489573e65d47 169 pc.printf("In loop %d, of repeated initialisation.\n",i);
nherriot 4:489573e65d47 170 i++;
nherriot 3:6d888ac31d2c 171 }
matsu 0:904e837fccc5 172
matsu 0:904e837fccc5 173 //get analog data
nherriot 4:489573e65d47 174 pc.printf("Set system into standby mode.........");
nherriot 4:489573e65d47 175
nherriot 4:489573e65d47 176 if(accelerometer.standby()==0)
nherriot 4:489573e65d47 177 {
nherriot 4:489573e65d47 178 pc.printf("Device set into standby...\n");
nherriot 4:489573e65d47 179 }
nherriot 4:489573e65d47 180 else
nherriot 4:489573e65d47 181 {
nherriot 4:489573e65d47 182 pc.printf("Device failed to set into standby...\n");
nherriot 4:489573e65d47 183 }
nherriot 4:489573e65d47 184 int deviceSystemMode = 0;
nherriot 4:489573e65d47 185 pc.printf("\nGet system mode, it should now be standby! ...\n");
nherriot 4:489573e65d47 186 if (accelerometer.get_SystemMode(deviceSystemMode)==0)
nherriot 4:489573e65d47 187 {
nherriot 4:489573e65d47 188 pc.printf("\nGot the device System Mode - device system mode which is: 0x%x \n", deviceSystemMode);
nherriot 4:489573e65d47 189 }
nherriot 4:489573e65d47 190 else
nherriot 4:489573e65d47 191 {
nherriot 4:489573e65d47 192 pc.printf("\nFailed to get the device system mode. The id is set as: 0x%x ", deviceSystemMode);
nherriot 4:489573e65d47 193
nherriot 4:489573e65d47 194 }
nherriot 4:489573e65d47 195
nherriot 4:489573e65d47 196
nherriot 4:489573e65d47 197
nherriot 4:489573e65d47 198
nherriot 4:489573e65d47 199
nherriot 4:489573e65d47 200
nherriot 4:489573e65d47 201
nherriot 4:489573e65d47 202
nherriot 4:489573e65d47 203
nherriot 4:489573e65d47 204
nherriot 4:489573e65d47 205
nherriot 4:489573e65d47 206
nherriot 4:489573e65d47 207
nherriot 4:489573e65d47 208
nherriot 2:0587772b03b0 209 /*
nherriot 2:0587772b03b0 210 while(1)
nherriot 2:0587772b03b0 211 {
matsu 0:904e837fccc5 212 //send procedure
matsu 0:904e837fccc5 213 wait(0.07);
matsu 0:904e837fccc5 214 switch(number){
matsu 0:904e837fccc5 215 case 0:
nherriot 2:0587772b03b0 216 if(i2c.write(mcu_address,add,1) == 0){
matsu 0:904e837fccc5 217 number++;
nherriot 2:0587772b03b0 218 pc.printf("In case 0 loop. The number is: %d \n", number);
matsu 0:904e837fccc5 219 led1 = 1;
matsu 0:904e837fccc5 220 }else{
matsu 0:904e837fccc5 221 number=0;
nherriot 2:0587772b03b0 222 pc.printf("In case 0 loop. The number is reset to: %d \n", number);
matsu 0:904e837fccc5 223 led1 = 0;
matsu 0:904e837fccc5 224 led2 = 0;
matsu 0:904e837fccc5 225 led3 = 1;
matsu 0:904e837fccc5 226 }
matsu 0:904e837fccc5 227 break;
matsu 0:904e837fccc5 228 case 1:
nherriot 2:0587772b03b0 229 if(i2c.read(mcu_address,cmd,6) == 0){
matsu 0:904e837fccc5 230 number++;
nherriot 2:0587772b03b0 231 pc.printf("In case 1 loop. The number is: %d \n", number);
matsu 0:904e837fccc5 232 led2 = 1;
matsu 0:904e837fccc5 233 }else{
matsu 0:904e837fccc5 234 number=0;
nherriot 2:0587772b03b0 235 pc.printf("In case 1 loop. The number is reset to: %d \n", number);
matsu 0:904e837fccc5 236 led1 = 0;
matsu 0:904e837fccc5 237 led2 = 0;
matsu 0:904e837fccc5 238 led3 = 0;
matsu 0:904e837fccc5 239 }
matsu 0:904e837fccc5 240 break;
matsu 0:904e837fccc5 241 case 2:
matsu 1:0c1dd02be97a 242 //get analog data
nherriot 2:0587772b03b0 243 pc.printf("\r X = %d,Y = %d,Z = %d \n",cmd[1],cmd[3],cmd[5]);
matsu 0:904e837fccc5 244 led3 = 1;
matsu 0:904e837fccc5 245 wait(0.5);
matsu 0:904e837fccc5 246 led1 = 0;
matsu 0:904e837fccc5 247 led2 = 0;
matsu 0:904e837fccc5 248 led3 = 0;
matsu 0:904e837fccc5 249 number=0;
matsu 0:904e837fccc5 250 break;
matsu 0:904e837fccc5 251 }
nherriot 2:0587772b03b0 252 }*/
nherriot 2:0587772b03b0 253
matsu 0:904e837fccc5 254 }