Programme de démonstration DHT11

Dependencies:   DHT

Files at this revision

API Documentation at this revision

Comitter:
bastienvincke
Date:
Tue Aug 13 08:09:44 2019 +0000
Parent:
0:97c2d4128ff3
Commit message:
V1 BV

Changed in this revision

MMA7455.cpp Show diff for this revision Revisions of this file
MMA7455.h Show diff for this revision Revisions of this file
SDFileSystem.lib Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
diff -r 97c2d4128ff3 -r 61d800d62542 MMA7455.cpp
--- a/MMA7455.cpp	Thu Jul 20 09:05:08 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,295 +0,0 @@
-/******************************************************************************
- * Includes
- *****************************************************************************/
-
-#include "mbed.h"
-#include "mbed_debug.h"
-
-#include "MMA7455.h"
-
-/******************************************************************************
- * Defines and typedefs
- *****************************************************************************/
-
-#define MMA7455_I2C_ADDR (0x1D << 1)
-
-#define MMA7455_ADDR_XOUTL  0x00
-#define MMA7455_ADDR_XOUTH  0x01
-#define MMA7455_ADDR_YOUTL  0x02
-#define MMA7455_ADDR_YOUTH  0x03
-#define MMA7455_ADDR_ZOUTL  0x04
-#define MMA7455_ADDR_ZOUTH  0x05
-#define MMA7455_ADDR_XOUT8  0x06
-#define MMA7455_ADDR_YOUT8  0x07
-#define MMA7455_ADDR_ZOUT8  0x08
-#define MMA7455_ADDR_STATUS 0x09
-#define MMA7455_ADDR_DETSRC 0x0A
-#define MMA7455_ADDR_TOUT   0x0B
-#define MMA7455_ADDR_I2CAD  0x0D
-#define MMA7455_ADDR_USRINF 0x0E
-#define MMA7455_ADDR_WHOAMI 0x0F
-#define MMA7455_ADDR_XOFFL  0x10
-#define MMA7455_ADDR_XOFFH  0x11
-#define MMA7455_ADDR_YOFFL  0x12
-#define MMA7455_ADDR_YOFFH  0x13
-#define MMA7455_ADDR_ZOFFL  0x14
-#define MMA7455_ADDR_ZOFFH  0x15
-#define MMA7455_ADDR_MCTL   0x16
-#define MMA7455_ADDR_INTRST 0x17
-#define MMA7455_ADDR_CTL1   0x18
-#define MMA7455_ADDR_CTL2   0x19
-#define MMA7455_ADDR_LDTH   0x1A
-#define MMA7455_ADDR_PDTH   0x1B
-#define MMA7455_ADDR_PW     0x1C
-#define MMA7455_ADDR_LT     0x1D
-#define MMA7455_ADDR_TW     0x1E
-
-#define MMA7455_MCTL_MODE(m) ((m) << 0)
-#define MMA7455_MCTL_GLVL(g) ((g) << 2)
-
-#define MMA7455_STATUS_DRDY (1 << 0)
-#define MMA7455_STATUS_DOVR (1 << 1)
-#define MMA7455_STATUS_PERR (1 << 2)
-
-
-MMA7455::MMA7455(PinName sda, PinName scl) : _i2c(sda, scl)
-{
-    _mode = ModeStandby;
-    _range = Range_8g;
-
-    _xOff = 0;
-    _yOff = 0;
-    _zOff = 0;
-}
-
-bool MMA7455::setMode(Mode mode) {
-    bool result = false;
-    int mCtrl = 0;
-
-    do {
-        mCtrl = getModeControl();
-        if (mCtrl < 0) break;
-
-        mCtrl &= ~(0x03 << 0);
-        mCtrl |= MMA7455_MCTL_MODE(mode);
-
-        if (setModeControl((uint8_t)mCtrl) < 0) {
-            break;
-        }
-
-        _mode = mode;
-        result = true;
-    } while(0);
-
-
-
-    return result;
-}
-
-bool MMA7455::setRange(Range range) {
-    bool result = false;
-    int mCtrl = 0;
-
-    do {
-        mCtrl = getModeControl();
-        if (mCtrl < 0) break;
-
-        mCtrl &= ~(0x03 << 2);
-        mCtrl |= MMA7455_MCTL_GLVL(range);
-
-        if (setModeControl((uint8_t)mCtrl) < 0) {
-            break;
-        }
-
-        _range = range;
-        result = true;
-    } while(0);
-
-
-
-    return result;
-
-}
-
-bool MMA7455::read(int32_t& x, int32_t& y, int32_t& z) {
-    bool result = false;
-
-
-    // nothing to read in standby mode
-    if (_mode == ModeStandby) return false;
-
-    // wait for ready flag
-    int status = 0;
-    do {
-      status = getStatus();
-    } while (status >= 0 && (status & MMA7455_STATUS_DRDY) == 0);
-
-
-    do {
-        if (status < 0) break;
-
-
-        char buf[6];
-        buf[0] = MMA7455_ADDR_XOUTL;
-        if (_i2c.write(MMA7455_I2C_ADDR, buf, 1) != 0) break;
-        if (_i2c.read(MMA7455_I2C_ADDR, buf, 6) != 0) break;
-
-        // check if second bit is set in high byte -> negative value
-        // expand negative value to full byte
-        if (buf[1] & 0x02) buf[1] |= 0xFC;
-        if (buf[3] & 0x02) buf[3] |= 0xFC;
-        if (buf[5] & 0x02) buf[5] |= 0xFC;
-
-        x = (int16_t)((buf[1] << 8) | buf[0]) + _xOff;
-        y = (int16_t)((buf[3] << 8) | buf[2]) + _yOff;
-        z = (int16_t)((buf[5] << 8) | buf[4]) + _zOff;
-
-
-        result = true;
-
-    } while(0);
-
-
-    return result;
-}
-
-bool MMA7455::calibrate() {
-    bool result = false;
-    bool failed = false;
-
-    int32_t x = 0;
-    int32_t y = 0;
-    int32_t z = 0;
-
-    int32_t xr = 0;
-    int32_t yr = 0;
-    int32_t zr = 0;
-
-    int xOff = 0;
-    int yOff = 0;
-    int zOff = 16;
-    if (_range == Range_2g) {
-        zOff = 64;
-    }
-    if (_range == Range_4g) {
-        zOff = 32;
-    }
-
-    do {
-
-        // get an average of 6 values
-        for (int i = 0; i < 6; i++) {
-            if (!read(xr, yr, zr)) {
-                failed = true;
-                break;
-            }
-            x += xr;
-            y += yr;
-            z += zr;
-
-            wait_ms(100);
-        }
-
-        if (failed) break;
-        x /= 6;
-        y /= 6;
-        z /= 6;
-
-        xOff -= x;
-        yOff -= y;
-        zOff -= z;
-
-        /*
-         * For some reason we have not got correct/reliable calibration
-         * by using the offset drift registers. Instead we are
-         * calculating the offsets and store them in member variables.
-         *
-         * These member variables are then used in the read() method
-         */
-
-        _xOff = xOff;
-        _yOff = yOff;
-        _zOff = zOff;
-
-
-        result = true;
-
-    } while (0);
-
-
-
-    return result;
-}
-
-bool MMA7455::setCalibrationOffsets(int32_t xOff, int32_t yOff, int32_t zOff) {
-    _xOff = xOff;
-    _yOff = yOff;
-    _zOff = zOff;
-
-    return true;
-}
-
-bool MMA7455::getCalibrationOffsets(int32_t& xOff, int32_t& yOff, int32_t& zOff) {
-    xOff = _xOff;
-    yOff = _yOff;
-    zOff = _zOff;
-
-    return true;
-}
-
-int MMA7455::getStatus() {
-    int result = -1;
-    char data[1];
-
-    do {
-        data[0] = MMA7455_ADDR_STATUS;
-        if (_i2c.write(MMA7455_I2C_ADDR, data, 1) != 0) break;
-
-        if (_i2c.read(MMA7455_I2C_ADDR, data, 1) != 0) break;
-
-        result = data[0];
-
-    } while (0);
-
-
-
-    return result;
-}
-
-int MMA7455::getModeControl() {
-
-    int result = -1;
-    char data[1];
-
-    do {
-        data[0] = MMA7455_ADDR_MCTL;
-        if (_i2c.write(MMA7455_I2C_ADDR, data, 1) != 0) break;
-
-        if (_i2c.read(MMA7455_I2C_ADDR, data, 1) != 0) break;
-
-        result = data[0];
-
-    } while (0);
-
-
-
-    return result;
-}
-
-int MMA7455::setModeControl(uint8_t mctl) {
-    int result = -1;
-    char data[2];
-
-    do {
-        data[0] = MMA7455_ADDR_MCTL;
-        data[1] = (char)mctl;
-        if (_i2c.write(MMA7455_I2C_ADDR, data, 2) != 0) break;
-
-        result = 0;
-
-    } while (0);
-
-
-
-    return result;
-}
diff -r 97c2d4128ff3 -r 61d800d62542 MMA7455.h
--- a/MMA7455.h	Thu Jul 20 09:05:08 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,93 +0,0 @@
-#ifndef MMA7455_H
-#define MMA7455_H
-
-
-/**
- * Freescale Accelerometer MMA7455.
- */
-class MMA7455 {
-public:
-
-    enum Mode {
-        ModeStandby = 0,
-        ModeMeasurement = 1,
-    };
-
-    /** Acceleration range */
-    enum Range {
-        Range_8g = 0,
-        Range_2g = 1,
-        Range_4g = 2
-    };
-
-    /**
-     * Create an interface to the MMA7455 accelerometer
-     *
-     * @param sda I2C data line pin
-     * @param scl I2C clock line pin
-     */
-    MMA7455(PinName sda, PinName scl);
-
-    bool setMode(Mode mode);
-    bool setRange(Range range);
-
-    bool read(int32_t& x, int32_t& y, int32_t& z);
-
-    /**
-     * Calibrate for 0g, that is, calculate offset to achieve
-     * 0g values when accelerometer is placed on flat surface.
-     *
-     * Please make sure the accelerometer is placed on a flat surface before
-     * calling this function.
-     *
-     * @return true if request was successful; otherwise false
-     */
-    bool calibrate();
-
-    /**
-     * Get calculated offset values. Offsets will be calculated by the
-     * calibrate() method.
-     *
-     * Use these values and put them in persistent storage to avoid
-     * having to calibrate the accelerometer after a reset/power cycle.
-     *
-     * @param xOff x offset is written to this argument
-     * @param yOff y offset is written to this argument
-     * @param zOff z offset is written to this argument
-     *
-     * @return true if request was successful; otherwise false
-     */
-    bool getCalibrationOffsets(int32_t& xOff, int32_t& yOff, int32_t& zOff);
-
-    /**
-     * Set calibration offset values. These values should normally
-     * at one point in time have been retrieved by calling the
-     * getCalibrationOffsets method.
-     *
-     *
-     * @param xOff x offset
-     * @param yOff y offset
-     * @param zOff z offset
-     *
-     * @return true if request was successful; otherwise false
-     */
-    bool setCalibrationOffsets(int32_t xOff, int32_t yOff, int32_t zOff);
-
-
-
-private:
-
-    I2C _i2c;
-    Mode _mode;
-    Range _range;
-    int32_t _xOff;
-    int32_t _yOff;
-    int32_t _zOff;
-
-    int getStatus();
-    int getModeControl();
-    int setModeControl(uint8_t mctl);
-
-};
-
-#endif
diff -r 97c2d4128ff3 -r 61d800d62542 SDFileSystem.lib
--- a/SDFileSystem.lib	Thu Jul 20 09:05:08 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://developer.mbed.org/users/mbed_official/code/SDFileSystem/#8db0d3b02cec
diff -r 97c2d4128ff3 -r 61d800d62542 main.cpp
--- a/main.cpp	Thu Jul 20 09:05:08 2017 +0000
+++ b/main.cpp	Tue Aug 13 08:09:44 2019 +0000
@@ -1,33 +1,32 @@
 #include "mbed.h"
-#include "DHT.h"
+#include "DHT.h"                                                                // on inclue la librairie
 
-DHT sensor(D7,DHT22);
-
-void task_DHT();
+DigitalOut myled(LED1);                                                         // on utilisera la led embarqué sur la carte
+DHT dht11(PB_10,DHT11);                                                         // on déclare le capteur (connecté sur le port DIO_D6 de la carte L073RZ)
 
 int main()
-{   
-    
+{
+    int err;
+    float temperature;
+    float humidite;
+    float point_rose;
+
     while(1) {
-         task_DHT();
+        // Utilisation du capteur DHT11
+        err = dht11.readData();                                                 // récupération des données
+        if (err == 0) {
+            temperature = dht11.ReadTemperature(CELCIUS);
+            humidite = dht11.ReadHumidity();
+            point_rose = dht11.CalcdewPoint(dht11.ReadTemperature(CELCIUS), dht11.ReadHumidity());
+            printf("Temperature : %4.2f C \n",temperature);                    // envoie sur le port série des données (par défaut 9600bauds)
+            printf("Humidite : %4.2f % \n",humidite);
+            printf("Point rose : %4.2f C \n",point_rose);
+        } else
+            printf("\r\nErreur %i \n",err);
+
+        // Clignotement de la led
+        myled != myled;
+        
+        wait(2);
     }
 }
-void task_DHT(){
-    int error = 0;
-    int h, c,f;
-    float dp = 0.0f;
- 
-        wait(2.0f);
-        error = sensor.readData();
-        if (0 == error) {
-            c   = sensor.ReadTemperature(CELCIUS);
-            f   = sensor.ReadTemperature(FARENHEIT);
-            h   = sensor.ReadHumidity();
-            dp  = sensor.CalcdewPoint(c, h);
-    
-            printf("Temperature in Celcius: %d, Farenheit %d\r\n", c, f);
-            printf("Humidity is %d, Dewpoint: %4.2f\r\n\n", h, dp);
-        } else {
-            printf("Error: %d\r\n", error);
-        }
-}