Revision 37:b7acef59086c, committed 2021-02-23

Comitter:

saileshtimilsena

Date:

Tue Feb 23 20:03:58 2021 +0000

Parent:

36:2d0820b53217

Commit message:

Updated Version for the Research Work...; Change the Wi-Fi ssid and password and program STM32L475 board and see the result in GUI with graph

Changed in this revision

--- a/main.cpp	Fri Feb 19 16:16:56 2021 +0000
+++ b/main.cpp	Tue Feb 23 20:03:58 2021 +0000
@@ -20,24 +20,7 @@
 #include "mbed.h"
 #include "simple-mbed-cloud-client.h"
 #include "LittleFileSystem.h"
-
-#include "stdbool.h" //for stepper motor function
-
-#define STEPPER_PIN_1 PA_15  //ARD.D9-PWM PA15
-#define STEPPER_PIN_2 PA_2 //ARD.D10-PWM PA2
-#define STEPPER_PIN_3 PA_7 //ARD.D11-PWM PA7
-#define STEPPER_PIN_4 PA_6 //ARD.D12-PWM PA6
- 
-DigitalOut steeperOne(STEPPER_PIN_1);
-DigitalOut steeperTwo(STEPPER_PIN_2);
-DigitalOut steeperThree(STEPPER_PIN_3);
-DigitalOut steeperFour(STEPPER_PIN_4);
- 
-DigitalOut myIOs(PB_14); // review the results on PB_14
-DigitalOut myIOs2(PA_5); // review the results on PA_5
-int step_number=0;
-int open_flag=0;
-int close_flag=0;
+#include<math.h>
 
 // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi.
 NetworkInterface *net;
@@ -72,8 +55,9 @@
 static DevI2C devI2c(PB_11,PB_10);
 static HTS221Sensor sen_hum_temp(&devI2c);
 static LPS22HBSensor sen_press_temp(&devI2c);
+//static LSM6DSLSensor sen_acc_gyro(&devI2c,LSM6DSL_ACC_GYRO_I2C_ADDRESS_LOW,PD_11);
+
 static DigitalOut shutdown_pin(PC_6);
-//static VL53L0X sen_distance(&devI2c, &shutdown_pin, PC_7);
 
 // Temperature reading from microcontroller
 AnalogIn adc_temp(ADC_TEMP);
@@ -88,7 +72,9 @@
 #ifdef SEND_ALL_SENSORS
 MbedCloudClientResource *res_humidity;
 MbedCloudClientResource *res_pressure;
-MbedCloudClientResource *res_adc_temp;
+MbedCloudClientResource *res_temperature;
+
+
 #endif /* SEND_ALL_SENSORS */
 
 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
@@ -122,87 +108,21 @@
     }
     printf("\n");
 }
-//Serial port define for uart1 usb
-//pb7 rx
-//pb6 tx
-//Serial device(USBTX, USBRX);
-Serial device(PB_6, PB_7);  // tx, rx
-
 
 /**
  * Button function triggered by the physical button press.
  */
- 
- 
- 
- 
- void Tx_interrupt();
-void Rx_interrupt();
-void send_line();
-void read_line();
- 
- 
-// Circular buffers for serial TX and RX data - used by interrupt routines
-const int buffer_size = 255;
-// might need to increase buffer size for high baud rates
-char tx_buffer[buffer_size+1];
-char rx_buffer[buffer_size+1];
-// Circular buffer pointers
-// volatile makes read-modify-write atomic 
-volatile int tx_in=0;
-volatile int tx_out=0;
-volatile int rx_in=0;
-volatile int rx_out=0;
-// Line buffers for sprintf and sscanf
-char tx_line[80];
-char rx_line[80];
-
-     int i=0;
-    int rx_i=0;
-    device.baud(115200);
- 
-// Setup a serial interrupt function to receive data
-    device.attach(&Rx_interrupt, Serial::RxIrq);
-// Setup a serial interrupt function to transmit data
-    device.attach(&Tx_interrupt, Serial::TxIrq);
- 
- 
 void button_press() {
     int v = res_button->get_value_int() + 1;
     res_button->set_value(v);
     printf("*** Button clicked %d times                                 \n", v);
 }
- 
 // Called everytime a new character goes into
 // the RX buffer. Test that character for \n
 // Note, rxGetLastChar() gets the last char that
 // we received but it does NOT remove it from
 // the RX buffer.
-void read_line() {
-    int i;
-    i = 0;
-// Start Critical Section - don't interrupt while changing global buffer variables
-    NVIC_DisableIRQ(UART1_IRQn);
-// Loop reading rx buffer characters until end of line character
-    while ((i==0) || (rx_line[i-1] != '\r')) {
-// Wait if buffer empty
-        if (rx_in == rx_out) {
-// End Critical Section - need to allow rx interrupt to get new characters for buffer
-            NVIC_EnableIRQ(UART1_IRQn);
-            while (rx_in == rx_out) {
-            }
-// Start Critical Section - don't interrupt while changing global buffer variables
-            NVIC_DisableIRQ(UART1_IRQn);
-        }
-        rx_line[i] = rx_buffer[rx_out];
-        i++;
-        rx_out = (rx_out + 1) % buffer_size;
-    }
-// End Critical Section
-    NVIC_EnableIRQ(UART1_IRQn);
-    rx_line[i-1] = 0;
-    return;
-}
+
 /**
  * Notification callback handler
  * @param resource The resource that triggered the callback
@@ -221,82 +141,11 @@
     endpointInfo = endpoint;
 }
 
-/*
-    for one rotation when passed true or false in function OneStep(bool)
-*/
-void OneStep(bool dir){
-if(dir)
-{
-    switch(step_number){
-      case 0:
-          steeperOne =1;
-          steeperTwo =0;
-          steeperThree =0;
-          steeperFour =0;
-        break;
-      case 1:
-          steeperOne =0;
-          steeperTwo =1;
-          steeperThree =0;
-          steeperFour =0;
-        break;
-      case 2:
-          steeperOne =0;
-          steeperTwo =0;
-          steeperThree =1;
-          steeperFour =0;
-        break;
-      case 3:
-          steeperOne =0;
-          steeperTwo =0;
-          steeperThree =0;
-          steeperFour =1;
-         break;
-        }// end of switch 
-}// end of if
-  
-else
-{
-    switch(step_number){
-      case 0:
-          steeperOne =0;
-          steeperTwo =0;
-          steeperThree =0;
-          steeperFour =1;
-        break;
-      case 1:
-          steeperOne =0;
-          steeperTwo =0;
-          steeperThree =1;
-          steeperFour =0;
-        break;
-      case 2:
-          steeperOne =0;
-          steeperTwo =1;
-          steeperThree =0;
-          steeperFour =0;
-        break;
-      case 3:
-          steeperOne =1;
-          steeperTwo =0;
-          steeperThree =0;
-          steeperFour =0;
-        break;
- 
-  
-    }// end of switch
-  }// end of else
-step_number++;
-  if(step_number > 3){
-    step_number = 0;
-  }
-} // end of OneStep() function
 /**
  * Initialize sensors
  */
 void sensors_init() {
     uint8_t id1, id2;
-
     printf ("\nSensors configuration:\n");
     // Initialize sensors
     sen_hum_temp.init(NULL);
@@ -305,13 +154,12 @@
     /// Call sensors enable routines
     sen_hum_temp.enable();
     sen_press_temp.enable();
-
+    
     sen_hum_temp.read_id(&id1);
     sen_press_temp.read_id(&id2);
 
     printf("HTS221  humidity & temperature    = 0x%X\n", id1);
     printf("LPS22HB pressure & temperature    = 0x%X\n", id2);
-
     printf("\n"); ;
 }
 
@@ -320,55 +168,28 @@
  * This function is called periodically.
  */
 void sensors_update() {
-    float temp3_value, humid_value, pressure_value = 0.0;
-
-    sen_hum_temp.get_humidity(&humid_value);
-    sen_press_temp.get_pressure(&pressure_value);
-    temp3_value = adc_temp.read()*100;
-    
-    printf("%2.0f^%2.0f^%3.0f",temp3_value,humid_value,pressure_value);   
-    printf("\n");
-           
-   // printf ("%02d : %02d : %02d\n", temp3_value, hummitly, pressure);
+    float humid_value, pressure_value = 0.0;
+    float temp1_value = 0.0;
+    //float temp3_value = 0.0;
     
-// added a new code for stepper motor 
-// if temperature reading is higher, open motor
-    if(temp3_value > 30)
-    {
-       open_flag = 0;
-       while(open_flag==0){
-            OneStep(false);
-            wait(0.01);
-            bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
-            if (btn_pressed) {
-                printf("Door Opened...\n");
-                open_flag=1;
-                close_flag=0;
-            }//end of if(btn_pressed)
-     }// end of while
-    }// end of if(temp3_value>20)
-    // now we expect to close
+    sen_hum_temp.get_humidity(&humid_value);
+    sen_hum_temp.get_temperature(&temp1_value);
+    sen_press_temp.get_pressure(&pressure_value);
+    //temp3_value = adc_temp.read()*100;
+    //sen_acc_gyro.get_g_axes(g_axes);
+      
+    printf("%2.2f^%2.1f^%3.2f",temp1_value,humid_value,pressure_value);   
+    printf("\n");
     
-    if(temp3_value < 20)//door has to close
-    {
-        close_flag = 0;
-        while(close_flag==0){
-            OneStep(true);
-            wait(0.01);
-            bool btn_pressed = (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE);
-            if (btn_pressed) {
-                printf("Door Closed...\n");
-                open_flag=0;
-                close_flag=1;
-            }//end of if(btn_pressed)
-     }// end of while     
-    }
-
+    wait_us(4000);//Wait until the loop_timer reaches 4000us (250Hz) before starting the next loop
+    
     if (endpointInfo) {
 #ifdef SEND_ALL_SENSORS
         res_humidity->set_value(humid_value);
+        res_temperature->set_value(temp1_value);
         res_pressure->set_value(pressure_value);
-        res_adc_temp->set_value(temp3_value);
+        //res_adc_temp->set_value(temp3_value);
+        
 #endif /* SEND_ALL_SENSORS */
     }
 }
@@ -444,26 +265,21 @@
 
 #ifdef SEND_ALL_SENSORS
     // Sensor resources
-/*    res_temperature = client.create_resource("3303/0/5700", "Temperature HTS221 (C)");
+    res_temperature = client.create_resource("3303/0/5700", "Temperature HTS221 (C)");
     res_temperature->set_value(0);
     res_temperature->methods(M2MMethod::GET);
-    res_temperature->observable(true);*/
+    res_temperature->observable(true);
 
     res_humidity = client.create_resource("3304/0/5700", "Humidity");
     res_humidity->set_value(0);
     res_humidity->methods(M2MMethod::GET);
     res_humidity->observable(true);
 
-    res_adc_temp = client.create_resource("3303/2/5700", "Temperature ADC (C)");
-    res_adc_temp->set_value(0);
-    res_adc_temp->methods(M2MMethod::GET);
-    res_adc_temp->observable(true);
-
     res_pressure = client.create_resource("3323/0/5700", "Pressure");
     res_pressure->set_value(0);
     res_pressure->methods(M2MMethod::GET);
     res_pressure->observable(true);
-
+    
 #endif /* SEND_ALL_SENSORS */
 
     printf("Initialized Pelion Client. Registering...\n");
@@ -478,7 +294,7 @@
     while (i-- > 0 && !client.is_client_registered()) {
         wait_ms(100);
     }
-
+    
     button.fall(eventQueue.event(&button_press));
 
     // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations