ST Americas mbed Team / Mbed 2 deprecated SeeedStudio_Grove_Sensors_Demo

Seeed Studio Grove Sensors Example

Dependencies:   mbed DHT DigitDisplay

Fork of STM32_Read_Sensors_Example by AT&T Developer Summit Hackathon 2016

main.cpp@4:de41ec16d765, 2014-08-27 (annotated)

Committer:
joe_tijerina
Date:
Wed Aug 27 17:35:24 2014 +0000
Revision:
4:de41ec16d765
Parent:
3:6d8574d8c9c1
Child:
5:41a15c0653e8
Added descriptions for each sensor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:005629fe3609 1 #include "mbed.h"
joe_tijerina 3:6d8574d8c9c1 2 #include "ADXL345_I2C.h"
joe_tijerina 3:6d8574d8c9c1 3
screamer 0:005629fe3609 4
joe_tijerina 4:de41ec16d765 5 //#define LED // Grove LED
joe_tijerina 4:de41ec16d765 6 //#define ACCEL // SEN04051P Grove - 3-Axis Digital Accelerometer(±16g)
joe_tijerina 4:de41ec16d765 7 //#define LIGHT_SENSOR // Grove Light Sensor using GL5528 photoresistor
joe_tijerina 4:de41ec16d765 8 //#define WATER_SENSOR // Grove Water Sensor
joe_tijerina 4:de41ec16d765 9 //#define GAS_SENSOR // SEN90512P Grove - Gas Sensor(MQ2)
joe_tijerina 4:de41ec16d765 10 #define TEMP_SENSOR // Grove Temperature Sensor using TTC03 Thermistor
screamer 0:005629fe3609 11
joe_tijerina 3:6d8574d8c9c1 12
joe_tijerina 3:6d8574d8c9c1 13 AnalogIn temp_sensor(A0);
joe_tijerina 3:6d8574d8c9c1 14 AnalogIn analog_light_sensor_read(A1);
joe_tijerina 3:6d8574d8c9c1 15 DigitalIn water_sensor(A2);
joe_tijerina 3:6d8574d8c9c1 16 AnalogIn gas_sensor(A3);
joe_tijerina 3:6d8574d8c9c1 17 DigitalOut my_led(D7);
joe_tijerina 3:6d8574d8c9c1 18 ADXL345_I2C accelerometer(D14, D15);
joe_tijerina 3:6d8574d8c9c1 19
joe_tijerina 3:6d8574d8c9c1 20
screamer 0:005629fe3609 21 int main() {
joe_tijerina 3:6d8574d8c9c1 22
joe_tijerina 3:6d8574d8c9c1 23 float vol;
joe_tijerina 3:6d8574d8c9c1 24 float Rsensor;
joe_tijerina 3:6d8574d8c9c1 25 int gas_sensor_value;
joe_tijerina 3:6d8574d8c9c1 26 int sound_sensor_value;
joe_tijerina 3:6d8574d8c9c1 27 int adc_scale = 4096;
joe_tijerina 3:6d8574d8c9c1 28 int readings[3] = {0, 0, 0};
joe_tijerina 3:6d8574d8c9c1 29 int sensorValue;
joe_tijerina 3:6d8574d8c9c1 30 int B = 3975;
joe_tijerina 3:6d8574d8c9c1 31 float resistance;
joe_tijerina 3:6d8574d8c9c1 32 float temperature;
joe_tijerina 3:6d8574d8c9c1 33 float temperature_f;
joe_tijerina 3:6d8574d8c9c1 34 char amb_temp[6];
joe_tijerina 3:6d8574d8c9c1 35 int a;
joe_tijerina 3:6d8574d8c9c1 36
joe_tijerina 3:6d8574d8c9c1 37 #ifdef ACCEL
joe_tijerina 3:6d8574d8c9c1 38 printf("Starting ADXL345 test...\n\r");
joe_tijerina 3:6d8574d8c9c1 39 wait(.001);
joe_tijerina 3:6d8574d8c9c1 40 printf("Device ID is: 0x%02x\n\r", accelerometer.getDeviceID());
joe_tijerina 3:6d8574d8c9c1 41 wait(.001);
joe_tijerina 3:6d8574d8c9c1 42
joe_tijerina 3:6d8574d8c9c1 43 // These are here to test whether any of the initialization fails. It will print the failure
joe_tijerina 3:6d8574d8c9c1 44 if (accelerometer.setPowerControl(0x00))
joe_tijerina 3:6d8574d8c9c1 45 {
joe_tijerina 3:6d8574d8c9c1 46 printf("didn't intitialize power control\n");
joe_tijerina 3:6d8574d8c9c1 47 return 0;
joe_tijerina 3:6d8574d8c9c1 48 }
joe_tijerina 3:6d8574d8c9c1 49
joe_tijerina 3:6d8574d8c9c1 50 //Full resolution, +/-16g, 4mg/LSB.
joe_tijerina 3:6d8574d8c9c1 51 wait(.001);
joe_tijerina 3:6d8574d8c9c1 52
joe_tijerina 3:6d8574d8c9c1 53 if(accelerometer.setDataFormatControl(0x0B))
joe_tijerina 3:6d8574d8c9c1 54 {
joe_tijerina 3:6d8574d8c9c1 55 printf("didn't set data format\n");
joe_tijerina 3:6d8574d8c9c1 56 return 0;
joe_tijerina 3:6d8574d8c9c1 57 }
joe_tijerina 3:6d8574d8c9c1 58 wait(.001);
joe_tijerina 3:6d8574d8c9c1 59
joe_tijerina 3:6d8574d8c9c1 60 //3.2kHz data rate.
joe_tijerina 3:6d8574d8c9c1 61 if(accelerometer.setDataRate(ADXL345_3200HZ))
joe_tijerina 3:6d8574d8c9c1 62 {
joe_tijerina 3:6d8574d8c9c1 63 printf("didn't set data rate\n");
joe_tijerina 3:6d8574d8c9c1 64 return 0;
joe_tijerina 3:6d8574d8c9c1 65 }
joe_tijerina 3:6d8574d8c9c1 66 wait(.001);
joe_tijerina 3:6d8574d8c9c1 67
joe_tijerina 3:6d8574d8c9c1 68 //Measurement mode.
joe_tijerina 3:6d8574d8c9c1 69 if(accelerometer.setPowerControl(MeasurementMode))
joe_tijerina 3:6d8574d8c9c1 70 {
joe_tijerina 3:6d8574d8c9c1 71 printf("didn't set the power control to measurement\n");
joe_tijerina 3:6d8574d8c9c1 72 return 0;
joe_tijerina 3:6d8574d8c9c1 73 }
joe_tijerina 3:6d8574d8c9c1 74 #endif
joe_tijerina 3:6d8574d8c9c1 75
joe_tijerina 3:6d8574d8c9c1 76 while(1)
joe_tijerina 3:6d8574d8c9c1 77 {
joe_tijerina 3:6d8574d8c9c1 78 #ifdef LED
joe_tijerina 3:6d8574d8c9c1 79 my_led = 1; // LED is ON
bcostm 2:b60cb847489c 80 wait(0.2); // 200 ms
joe_tijerina 3:6d8574d8c9c1 81 my_led = 0; // LED is OFF
bcostm 2:b60cb847489c 82 wait(1.0); // 1 sec
joe_tijerina 3:6d8574d8c9c1 83 #endif
joe_tijerina 3:6d8574d8c9c1 84
joe_tijerina 3:6d8574d8c9c1 85 #ifdef WATER_SENSOR
joe_tijerina 3:6d8574d8c9c1 86 printf("water_sensor: %d \n\r", water_sensor.read());
joe_tijerina 3:6d8574d8c9c1 87 wait(0.5);
joe_tijerina 3:6d8574d8c9c1 88 #endif
joe_tijerina 3:6d8574d8c9c1 89
joe_tijerina 3:6d8574d8c9c1 90 #ifdef GAS_SENSOR
joe_tijerina 3:6d8574d8c9c1 91 gas_sensor_value = gas_sensor.read_u16();
joe_tijerina 3:6d8574d8c9c1 92 printf("gas_sensor_value: 0x%X \n\r", gas_sensor_value);
joe_tijerina 3:6d8574d8c9c1 93
joe_tijerina 3:6d8574d8c9c1 94 vol = (float)gas_sensor_value/adc_scale*5.0;
joe_tijerina 3:6d8574d8c9c1 95 printf("gas vol: %f \n\r", vol);
joe_tijerina 3:6d8574d8c9c1 96 wait(1);
joe_tijerina 3:6d8574d8c9c1 97 #endif
joe_tijerina 3:6d8574d8c9c1 98
joe_tijerina 3:6d8574d8c9c1 99 #ifdef ACCEL
joe_tijerina 3:6d8574d8c9c1 100 accelerometer.getOutput(readings);
joe_tijerina 3:6d8574d8c9c1 101 wait(0.1); // 100 ms
joe_tijerina 3:6d8574d8c9c1 102
joe_tijerina 3:6d8574d8c9c1 103 /* x-axis, y-axis and z-axis */
joe_tijerina 3:6d8574d8c9c1 104 printf("%d, %d, %d\n\r", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]);
joe_tijerina 3:6d8574d8c9c1 105 #endif
joe_tijerina 3:6d8574d8c9c1 106
joe_tijerina 3:6d8574d8c9c1 107 #ifdef LIGHT_SENSOR
joe_tijerina 3:6d8574d8c9c1 108 sensorValue = analog_light_sensor_read.read_u16();
joe_tijerina 3:6d8574d8c9c1 109 Rsensor=(float)(adc_scale-sensorValue)*10/sensorValue;
joe_tijerina 3:6d8574d8c9c1 110 printf("Light Sensor Analog Reading is 0x%X = %d ", sensorValue, sensorValue);
joe_tijerina 3:6d8574d8c9c1 111 printf("The sensor resistance is %f \n\n\r", Rsensor);
joe_tijerina 3:6d8574d8c9c1 112 wait(1); // 1s
joe_tijerina 3:6d8574d8c9c1 113 #endif
joe_tijerina 3:6d8574d8c9c1 114
joe_tijerina 3:6d8574d8c9c1 115 #ifdef TEMP_SENSOR
joe_tijerina 3:6d8574d8c9c1 116 a = temp_sensor.read_u16();
joe_tijerina 3:6d8574d8c9c1 117
joe_tijerina 3:6d8574d8c9c1 118 resistance = (float)(adc_scale-a)*10000/a; //get the resistance of the sensor;
joe_tijerina 3:6d8574d8c9c1 119 temperature = 1/(log(resistance/10000)/B+1/298.15)-273.15; //convert to temperature via datasheet ;
joe_tijerina 3:6d8574d8c9c1 120 temperature_f = (1.8 * temperature) + 32.0;
joe_tijerina 3:6d8574d8c9c1 121 sprintf(amb_temp, "%0.2f", temperature_f);
joe_tijerina 3:6d8574d8c9c1 122
joe_tijerina 3:6d8574d8c9c1 123 printf("Temp Sensor Analog Reading is 0x%X = %d ", a, a);
joe_tijerina 3:6d8574d8c9c1 124 printf("Current Temperature: %f C %f F \n\r", temperature, temperature_f);
joe_tijerina 3:6d8574d8c9c1 125 wait(1); // 1s
joe_tijerina 3:6d8574d8c9c1 126 #endif
joe_tijerina 3:6d8574d8c9c1 127
screamer 0:005629fe3609 128 }
screamer 0:005629fe3609 129 }