mech / Mbed OS AnalogIn_HelloWorld

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Fork of AnalogIn_HelloWorld by mbed_example

main.cpp@4:e29502420eef, 2018-11-01 (annotated)

Committer:
isshikiyuya
Date:
Thu Nov 01 18:32:19 2018 +0000
Revision:
4:e29502420eef
Parent:
0:101a12a915c6
Child:
5:c22a0111045b
a

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
isshikiyuya 4:e29502420eef 20 AnalogIn ain1(A1);
isshikiyuya 4:e29502420eef 21 AnalogIn ain2(A2);
isshikiyuya 4:e29502420eef 22 AnalogIn ain3(A3);
isshikiyuya 4:e29502420eef 23 DigitalOut dout(D1);
sam_grove 0:101a12a915c6 24
sam_grove 0:101a12a915c6 25 int main(void)
sam_grove 0:101a12a915c6 26 {
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
isshikiyuya 4:e29502420eef 31 dout = 1;
sam_grove 0:101a12a915c6 32
sam_grove 0:101a12a915c6 33 // print the percentage and 16 bit normalized values
isshikiyuya 4:e29502420eef 34 // printf("percentage: %3.3f%%\n", ain.read()*100.0f);
isshikiyuya 4:e29502420eef 35 // printf("normalized: 0x%04X \n", ain.read_u16());
isshikiyuya 4:e29502420eef 36 printf("voltage ain1: %f V\n", ain1.read()*3.3f);
isshikiyuya 4:e29502420eef 37 printf("voltage ain2: %f V\n", ain2.read()*3.3f);
isshikiyuya 4:e29502420eef 38 printf("voltage ain3: %f V\n\n", ain3.read()*3.3f);
isshikiyuya 4:e29502420eef 39 wait(2);
sam_grove 0:101a12a915c6 40 }
sam_grove 0:101a12a915c6 41 }