WIZnet / Mbed 2 deprecated AnalogIn-HelloWorld_WIZwiki-W7500

AnalogIn-HelloWorld in WIZwiki-W7500

Dependencies:   mbed

Fork of AnalogIn-HelloWorld_WIZwiki-W7500 by WIZnet

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.

  • WIZwiki-W7500 from WIZnet (Platform board)

Hardware Configuration

WIZwiki-W7500 Pin map

pin map

Initialize an analog pin
Initialize an A0 pin of WIZwiki-W7100 platform as an analog pin.

Read analog data from analog pin
Connect an analog device, such as a variable resistor, to a0 pin. And read analog data.

Software

ADC Pin initialization

main.cpp

AnalogIn   ain(A0);

Read analog data and print to serial port

main.cpp

printf("percentage: %3.3f%%\n", ain.read()*100.0f);

main.cpp@3:c1650d8d13b4, 2015-06-22 (annotated)

Committer:
justinkim
Date:
Mon Jun 22 04:12:45 2015 +0000
Revision:
3:c1650d8d13b4
Parent:
2:da2772e498bf 
in WIZwiki-W7500

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sam_grove 0:101a12a915c6 1 /* mbed Example Program
sam_grove 0:101a12a915c6 2 * Copyright (c) 2006-2014 ARM Limited
sam_grove 0:101a12a915c6 3 *
sam_grove 0:101a12a915c6 4 * Licensed under the Apache License, Version 2.0 (the "License");
sam_grove 0:101a12a915c6 5 * you may not use this file except in compliance with the License.
sam_grove 0:101a12a915c6 6 * You may obtain a copy of the License at
sam_grove 0:101a12a915c6 7 *
sam_grove 0:101a12a915c6 8 * http://www.apache.org/licenses/LICENSE-2.0
sam_grove 0:101a12a915c6 9 *
sam_grove 0:101a12a915c6 10 * Unless required by applicable law or agreed to in writing, software
sam_grove 0:101a12a915c6 11 * distributed under the License is distributed on an "AS IS" BASIS,
sam_grove 0:101a12a915c6 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sam_grove 0:101a12a915c6 13 * See the License for the specific language governing permissions and
sam_grove 0:101a12a915c6 14 * limitations under the License.
sam_grove 0:101a12a915c6 15 */
sam_grove 0:101a12a915c6 16
sam_grove 0:101a12a915c6 17 #include "mbed.h"
sam_grove 0:101a12a915c6 18
sam_grove 0:101a12a915c6 19 // Initialize a pins to perform analog input and digital output fucntions
sam_grove 0:101a12a915c6 20 AnalogIn ain(A0);
sam_grove 0:101a12a915c6 21 DigitalOut dout(LED1);
sam_grove 0:101a12a915c6 22
sam_grove 0:101a12a915c6 23 int main(void)
sam_grove 0:101a12a915c6 24 {
justinkim 2:da2772e498bf 25 Serial pc(USBTX,USBRX);
justinkim 2:da2772e498bf 26 pc.baud(115200);
sam_grove 0:101a12a915c6 27 while (1) {
sam_grove 0:101a12a915c6 28 // test the voltage on the initialized analog pin
sam_grove 0:101a12a915c6 29 // and if greater than 0.3 * VCC set the digital pin
sam_grove 0:101a12a915c6 30 // to a logic 1 otherwise a logic 0
sam_grove 0:101a12a915c6 31 if(ain > 0.3f) {
sam_grove 0:101a12a915c6 32 dout = 1;
sam_grove 0:101a12a915c6 33 } else {
sam_grove 0:101a12a915c6 34 dout = 0;
sam_grove 0:101a12a915c6 35 }
sam_grove 0:101a12a915c6 36
sam_grove 0:101a12a915c6 37 // print the percentage and 16 bit normalized values
sam_grove 0:101a12a915c6 38 printf("percentage: %3.3f%%\n", ain.read()*100.0f);
sam_grove 0:101a12a915c6 39 printf("normalized: 0x%04X \n", ain.read_u16());
sam_grove 0:101a12a915c6 40 wait(0.2f);
sam_grove 0:101a12a915c6 41 }
sam_grove 0:101a12a915c6 42 }