WIZnet / Mbed 2 deprecated Seeed_Alcohol_Sensor_Example_with_WIZwiki-W7500

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Dependencies:   mbed

Fork of Seeed_Grove_Alcohol_Sensor_Example by Seeed

Prerequisite

This Program is an example of how to get analog data with WIZwiki-W7500 board A0 Pin.

To implement this function, you need a Platform board only.

Hardware Configuration

WIZwiki-W7500 Pin map

pin map

Initialize an analog pin
Initialize an A0 pin of WIZwiki-W7500 platform as an analog pin.

Read analog data from analog pin
Connect an analog device, such as an Alcohol sensor, to A0 pin. And read analog data.

Software

main.cpp

#include "mbed.h"

DigitalOut heater(A1);
AnalogIn sensor(A0);
DigitalOut led_r(LEDR);
DigitalOut led_g(LEDG);
DigitalOut led_b(LEDB);


int main(void)
{
    float value = 0.0f;
    
    led_g = 0;
    led_r = 0;
    led_b = 0;
    
    heater = 0;
    
    wait(0.1f);
    
    
    // Waiting for the sensor to warm-up
    while(value > 0.001f) {
        wait(1.0f);
        value = 1.0f - sensor;
        printf("Sensor is warming up : %2.2f\r\n", value);
    }
    led_g = 1;
    led_r = 1;
    led_b = 1;
    
    while(1)
    {
        value = 1- sensor;
        printf("%2.1f\r\n", value);
        if(value < 0.3)
        {
            led_g = 0;
            led_r = 1;
            led_b = 1;
        }
        else if(value < 0.7)
        {
            led_g = 1;
            led_r = 1;
            led_b = 0;
        }
        else
        {
            led_g = 1;
            led_r = 0;
            led_b = 1;
        }
        wait(1);
        
    }
}

Images

/media/uploads/bingdo/seeed_alcohol_sensor_example_with_wizwiki-w7500_3.jpg

Before alcohol test
/media/uploads/bingdo/seeed_alcohol_sensor_example_with_wizwiki-w7500.png

During alcohol test
/media/uploads/bingdo/seeed_alcohol_sensor_example_with_wizwiki-w7500_2.png

Files at this revision

API Documentation at this revision

Revision 1:2757e070a3c2, committed 2015-10-30

Comitter:
hjjeon
Date:
Fri Oct 30 01:00:33 2015 +0000
Parent:
0:ac502eed91bf
Commit message:
Alcohol sensor example with WIZwiki-W7500

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Fri Aug 15 21:25:14 2014 +0000
+++ b/main.cpp	Fri Oct 30 01:00:33 2015 +0000
@@ -3,17 +3,57 @@
 
 DigitalOut heater(A1);
 AnalogIn sensor(A0);
+DigitalOut led_r(LEDR);
+DigitalOut led_g(LEDG);
+DigitalOut led_b(LEDB);
+
 
 int main(void)
 {
     float value = 0.0f;
-    heater = 1;
+    
+    led_g = 0;
+    led_r = 0;
+    led_b = 0;
+    
+    heater = 0;
+    
     wait(0.1f);
     
-    while(1) {
-        heater = 0;
-        value = sensor;
-        printf("Sensor is: %2.2f\n", value);
+    
+    // Waiting for the sensor to warm-up
+    while(value > 0.001f) {
         wait(1.0f);
+        value = 1.0f - sensor;
+        printf("Sensor is warming up : %2.2f\r\n", value);
+    }
+    led_g = 1;
+    led_r = 1;
+    led_b = 1;
+    
+    while(1)
+    {
+        value = 1- sensor;
+        printf("%2.1f\r\n", value);
+        if(value < 0.3)
+        {
+            led_g = 0;
+            led_r = 1;
+            led_b = 1;
+        }
+        else if(value < 0.7)
+        {
+            led_g = 1;
+            led_r = 1;
+            led_b = 0;
+        }
+        else
+        {
+            led_g = 1;
+            led_r = 0;
+            led_b = 1;
+        }
+        wait(1);
+        
     }
 }

--- a/mbed.bld	Fri Aug 15 21:25:14 2014 +0000
+++ b/mbed.bld	Fri Oct 30 01:00:33 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/9327015d4013
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed/builds/34e6b704fe68
\ No newline at end of file