Roman Valencia / Mbed 2 deprecated inputs

reading a group of switches or one only

Dependencies:   Hotboards_switches mbed

main.cpp@2:57ea023c5aec, 2016-03-15 (annotated)

Committer:
RomanValenciaP
Date:
Tue Mar 15 18:47:30 2016 +0000
Revision:
2:57ea023c5aec
Parent:
1:5a47f2b970eb 
added original author and contact info

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RomanValenciaP 0:03e6fa9721e8 1
RomanValenciaP 2:57ea023c5aec 2 /* Library: Hotboards_switches.h
RomanValenciaP 2:57ea023c5aec 3 * Project: inputs
RomanValenciaP 2:57ea023c5aec 4 * File: main.cpp
RomanValenciaP 2:57ea023c5aec 5 * Author: Diego Perez
RomanValenciaP 2:57ea023c5aec 6 * Modified by: Roman Valencia
RomanValenciaP 2:57ea023c5aec 7 * Contact: http://www.hotboards.org/
RomanValenciaP 1:5a47f2b970eb 8 *
RomanValenciaP 0:03e6fa9721e8 9 * Read the value from 4 sw's (dip switch) and also read the value from a single sw.
RomanValenciaP 0:03e6fa9721e8 10 */
RomanValenciaP 0:03e6fa9721e8 11
RomanValenciaP 0:03e6fa9721e8 12 #include "mbed.h"
RomanValenciaP 0:03e6fa9721e8 13 #include "Hotboards_switches.h"
RomanValenciaP 0:03e6fa9721e8 14
RomanValenciaP 0:03e6fa9721e8 15 // Creates two sw objects, this interrupt will give us a LOW(0) value when close
RomanValenciaP 0:03e6fa9721e8 16 // because our dip switch works with pull-ups.
RomanValenciaP 0:03e6fa9721e8 17 Hotboards_switches dip1( PA_9 , PA_8 , PB_10 , PB_4 );
RomanValenciaP 0:03e6fa9721e8 18 Hotboards_switches sw1( PA_6 );
RomanValenciaP 0:03e6fa9721e8 19 // If your dip switch will gave you a HIGH(1) value when close, then we need to create
RomanValenciaP 0:03e6fa9721e8 20 // the sw object with an extra parameter:
RomanValenciaP 0:03e6fa9721e8 21 // Hotboards_switches dip1( PA_9 , PA_8 , PB_10 , PB_4 , 1 );
RomanValenciaP 0:03e6fa9721e8 22 // Hotboards_swtiches sw1( PA_6 , 1 );
RomanValenciaP 0:03e6fa9721e8 23 // In any case the function will return a HIGH(1) value any time the sw is closed
RomanValenciaP 0:03e6fa9721e8 24
RomanValenciaP 0:03e6fa9721e8 25 //For this example we will use the USB serial port, here we initialize it
RomanValenciaP 0:03e6fa9721e8 26 Serial pc(USBTX,USBRX);
RomanValenciaP 0:03e6fa9721e8 27
RomanValenciaP 0:03e6fa9721e8 28 int i, j;
RomanValenciaP 0:03e6fa9721e8 29 uint8_t binary, decimal;
RomanValenciaP 0:03e6fa9721e8 30
RomanValenciaP 0:03e6fa9721e8 31 int main()
RomanValenciaP 0:03e6fa9721e8 32 {
RomanValenciaP 0:03e6fa9721e8 33 while(1)
RomanValenciaP 0:03e6fa9721e8 34 {
RomanValenciaP 0:03e6fa9721e8 35 //Asks for the state of the sw1
RomanValenciaP 0:03e6fa9721e8 36 if( sw1.read( ) )
RomanValenciaP 0:03e6fa9721e8 37 {
RomanValenciaP 0:03e6fa9721e8 38 pc.printf( "sw1 = close (on)\r" );
RomanValenciaP 0:03e6fa9721e8 39 }
RomanValenciaP 0:03e6fa9721e8 40 else
RomanValenciaP 0:03e6fa9721e8 41 {
RomanValenciaP 0:03e6fa9721e8 42 pc.printf( "sw1 = open (off)\r" );
RomanValenciaP 0:03e6fa9721e8 43 }
RomanValenciaP 0:03e6fa9721e8 44 //Asks for the state of an specific sw from the dip switch dip1
RomanValenciaP 0:03e6fa9721e8 45 if( dip1.read( 2 ) )
RomanValenciaP 0:03e6fa9721e8 46 {
RomanValenciaP 0:03e6fa9721e8 47 pc.printf( "dip sw2 = close (on)\r" );
RomanValenciaP 0:03e6fa9721e8 48 }
RomanValenciaP 0:03e6fa9721e8 49 else
RomanValenciaP 0:03e6fa9721e8 50 {
RomanValenciaP 0:03e6fa9721e8 51 pc.printf( "dip sw2 = open (off)\r" );
RomanValenciaP 0:03e6fa9721e8 52 }
RomanValenciaP 0:03e6fa9721e8 53
RomanValenciaP 0:03e6fa9721e8 54 // Reads the dip switch value and puts it in binary
RomanValenciaP 0:03e6fa9721e8 55 binary = dip1.read();
RomanValenciaP 0:03e6fa9721e8 56 // Inverts the read value to make it coincide with the state of each
RomanValenciaP 0:03e6fa9721e8 57 // switch in binary
RomanValenciaP 0:03e6fa9721e8 58 binary = ~binary;
RomanValenciaP 0:03e6fa9721e8 59 // Applies a mask(00001111) to extract the value of the dip switch
RomanValenciaP 0:03e6fa9721e8 60 decimal = binary&0x0F;
RomanValenciaP 0:03e6fa9721e8 61 // Sends throught USB serial the value in decimal
RomanValenciaP 0:03e6fa9721e8 62 pc.printf( "dec = " );
RomanValenciaP 0:03e6fa9721e8 63 pc.printf( "%d\r" , decimal );
RomanValenciaP 0:03e6fa9721e8 64 // Sends through USB serial the value in binary
RomanValenciaP 0:03e6fa9721e8 65 pc.printf( "bin = " );
RomanValenciaP 0:03e6fa9721e8 66 for(i=0;i<4;i++) //Extracts and shows the binary value of each sw
RomanValenciaP 0:03e6fa9721e8 67 {
RomanValenciaP 0:03e6fa9721e8 68 j = binary&0x08; //Applies a mask(00001000) to extract the value of the bit in turn
RomanValenciaP 0:03e6fa9721e8 69 j>>=3; //Moves this bit 3 positions to the right
RomanValenciaP 0:03e6fa9721e8 70 pc.printf("%d",j); //Sends through USB serial the value of the extracted bit
RomanValenciaP 0:03e6fa9721e8 71 binary <<=1; //Moves the position 1 bit to the left to extract the next bit
RomanValenciaP 0:03e6fa9721e8 72 }
RomanValenciaP 0:03e6fa9721e8 73 pc.printf( "\n\r" );
RomanValenciaP 0:03e6fa9721e8 74 wait( 2 );
RomanValenciaP 0:03e6fa9721e8 75 }
RomanValenciaP 0:03e6fa9721e8 76 }