Roman Valencia / Mbed 2 deprecated inputs

reading a group of switches or one only

Dependencies:   Hotboards_switches mbed

main.cpp@1:5a47f2b970eb, 2016-03-15 (annotated)

Committer:
RomanValenciaP
Date:
Tue Mar 15 18:41:06 2016 +0000
Revision:
1:5a47f2b970eb
Parent:
0:03e6fa9721e8
Child:
2:57ea023c5aec
added header info

Who changed what in which revision?

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