![](/media/cache/group/Mbed-100-mk2_WXmQNC1.png.50x50_q85.png)
Hello world program for mbed SDK AnalogIn API
Dependencies: mbed
main.cpp@1:0a8f602aeec9, 2014-12-10 (annotated)
- Committer:
- sam_grove
- Date:
- Wed Dec 10 16:19:08 2014 -0600
- Revision:
- 1:0a8f602aeec9
- Parent:
- 0:101a12a915c6
Update mbed.bld to always use the latest version
Who changed what in which revision?
User | Revision | Line number | New 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 | { |
sam_grove | 0:101a12a915c6 | 25 | while (1) { |
sam_grove | 0:101a12a915c6 | 26 | // test the voltage on the initialized analog pin |
sam_grove | 0:101a12a915c6 | 27 | // and if greater than 0.3 * VCC set the digital pin |
sam_grove | 0:101a12a915c6 | 28 | // to a logic 1 otherwise a logic 0 |
sam_grove | 0:101a12a915c6 | 29 | if(ain > 0.3f) { |
sam_grove | 0:101a12a915c6 | 30 | dout = 1; |
sam_grove | 0:101a12a915c6 | 31 | } else { |
sam_grove | 0:101a12a915c6 | 32 | dout = 0; |
sam_grove | 0:101a12a915c6 | 33 | } |
sam_grove | 0:101a12a915c6 | 34 | |
sam_grove | 0:101a12a915c6 | 35 | // print the percentage and 16 bit normalized values |
sam_grove | 0:101a12a915c6 | 36 | printf("percentage: %3.3f%%\n", ain.read()*100.0f); |
sam_grove | 0:101a12a915c6 | 37 | printf("normalized: 0x%04X \n", ain.read_u16()); |
sam_grove | 0:101a12a915c6 | 38 | wait(0.2f); |
sam_grove | 0:101a12a915c6 | 39 | } |
sam_grove | 0:101a12a915c6 | 40 | } |