Diff: main.cpp

Revision:

0:b4b35a558b4d

Child:

3:ec7bc6955531

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Feb 21 02:07:19 2021 +0000
@@ -0,0 +1,106 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2019 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "mbed.h"
+
+#include <stdio.h>
+#include "BMP180.h"
+
+I2C i2c(I2C_SDA, I2C_SCL);
+BMP180 bmp180(&i2c);
+
+// Blinking rate in milliseconds
+#define BLINKING_RATE_MS                                                    2000
+
+DigitalOut  my_led(LED1);
+DigitalOut  pin_out(D8);
+InterruptIn my_button(USER_BUTTON);
+PwmOut      my_pwm(D9);
+AnalogIn adc_temp(ADC_TEMP);
+
+
+void pressed()
+{
+    printf("SDA %d\r\n", I2C_SDA);
+    printf("SDA %d\r\n", I2C_SCL);
+    if (my_pwm.read() < 1.0) {
+        my_pwm.write(my_pwm.read() + 0.1);
+        if (my_pwm.read() > 1.0) {
+            my_pwm.write(1.0);
+            printf("pwm set to 100 %\n");
+        } else {
+            printf("pwm set to %.2f %%\n", my_pwm.read() * 100);
+        }
+    } else {
+        my_pwm.write(0);
+        printf("pwm set to 0 %\n");
+    }
+    wait(0.1);
+    return;
+}
+
+void BMP180_GetAll (int oss)
+{
+    bmp180.startTemperature();
+    wait_ms(5);     // Wait for conversion to complete
+    float temp;
+    if(bmp180.getTemperature(&temp) != 0) {
+        printf("Error getting temperature\n");
+        return;
+    }
+
+//    bmp180.startPressure(BMP180::ULTRA_LOW_POWER);
+    bmp180.startPressure(BMP180::STANDARD);
+    wait_ms(10);    // Wait for conversion to complete
+    int pressure;
+    if(bmp180.getPressure(&pressure) != 0) {
+        printf("Error getting pressure\n");
+        return;
+    }
+
+    float altitude;
+    altitude = 44330*(1-(pow(((float)pressure/101325.0), 0.19029495718)));
+
+    printf("Pressure = %d Pa | Temperature = %.2f C | Altitude = %f\n", pressure, temp, altitude);
+}
+
+int main()
+{
+     while(1) {
+        bmp180.reset();
+        if (bmp180.init() != 0) {
+            printf("Error communicating with BMP180\n");
+        } else {
+            printf("Initialized BMP180\n");
+            break;
+        }
+        wait(1);
+    }
+    
+    // Initialise the digital pin LED1 as an output
+    printf("Blinking rate %d\r\n", BLINKING_RATE_MS);
+    my_pwm.period_ms(10);                                       
+    my_pwm.write(1.0);                                          
+    float fPower = my_pwm.read() * 100L;
+    printf("pwm set to %.2f\r\n", fPower);
+    
+    float f_Temperature;
+
+    // Set button
+    my_button.rise(&pressed);    
+    
+    while (true) {
+        BMP180_GetAll(0);
+
+        f_Temperature = (adc_temp.read()*100);
+        printf("ADC Temp = %f \r\n", f_Temperature);
+
+
+        my_led = !my_led;
+        pin_out = !pin_out;
+        printf("Blinking rate %d\r\n", my_led);
+        wait(BLINKING_RATE_MS / 1000);
+    }
+}