Roman Valencia / Mbed 2 deprecated inputs

reading a group of switches or one only

Dependencies:   Hotboards_switches mbed

main.cpp@0:03e6fa9721e8, 2016-03-02 (annotated)

Committer:
RomanValenciaP
Date:
Wed Mar 02 20:33:31 2016 +0000
Revision:
0:03e6fa9721e8
Child:
1:5a47f2b970eb
first release - recquires approval

Who changed what in which revision?

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