first release
Dependencies: mbed
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-W7500ECO Pin map
Initialize an analog pin
Initialize an P30 pin of WIZwiki-W7100ECO platform as an analog pin.
Read analog data from analog pin
Connect an analog device, such as a vriable resistor, to a0 pin. And read analog data.
Software
ADC Pin initialization
main.cpp
AnalogIn ain(P30);
Read analog data and print to serial port
main.cpp
printf("percentage: %3.3f%%\n", ain.read()*100.0f);
main.cpp
- Committer:
- bangbh
- Date:
- 2017-04-03
- Revision:
- 0:800b74bff4d2
File content as of revision 0:800b74bff4d2:
/* mbed Example Program * Copyright (c) 2006-2014 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" // Initialize a pins to perform analog input and digital output fucntions AnalogIn ain(P30); DigitalOut dout(LED1); int main(void) { Serial pc(USBTX,USBRX); pc.baud(115200); while (1) { // test the voltage on the initialized analog pin // and if greater than 0.3 * VCC set the digital pin // to a logic 1 otherwise a logic 0 if(ain > 0.3f) { dout = 1; } else { dout = 0; } // print the percentage and 16 bit normalized values printf("percentage: %3.3f%%\n", ain.read()*100.0f); printf("normalized: 0x%04X \n", ain.read_u16()); wait(0.2f); } }