Driver to control leds one at a time or in group
Dependents: handling_leds leds toggle writing ... more
Hotboards_leds.cpp@0:ea0715867677, 2016-02-27 (annotated)
- Committer:
- Hotboards
- Date:
- Sat Feb 27 23:35:58 2016 +0000
- Revision:
- 0:ea0715867677
first release , library complete, but is not tested
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Hotboards | 0:ea0715867677 | 1 | /* |
Hotboards | 0:ea0715867677 | 2 | Hotboards_leds.cpp - Driver to control leds one at a time or in group |
Hotboards | 0:ea0715867677 | 3 | Hotboards leds board (http://hotboards.org) |
Hotboards | 0:ea0715867677 | 4 | Created by Diego Perez, January 16, 2016. |
Hotboards | 0:ea0715867677 | 5 | Released into the public domain. |
Hotboards | 0:ea0715867677 | 6 | */ |
Hotboards | 0:ea0715867677 | 7 | |
Hotboards | 0:ea0715867677 | 8 | #include "Hotboards_leds.h" |
Hotboards | 0:ea0715867677 | 9 | |
Hotboards | 0:ea0715867677 | 10 | #define bitRead( var, bit ) (((var) >> (bit)) & 0x01) |
Hotboards | 0:ea0715867677 | 11 | #define bitWrite( var, bit, val ) (val) ? (var) |= (1<<(bit)) : (var) &= ~(1<<(bit)) |
Hotboards | 0:ea0715867677 | 12 | |
Hotboards | 0:ea0715867677 | 13 | Hotboards_leds::Hotboards_leds( PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 14 | { |
Hotboards | 0:ea0715867677 | 15 | _leds = 1; |
Hotboards | 0:ea0715867677 | 16 | _state = 0; |
Hotboards | 0:ea0715867677 | 17 | _on = on; |
Hotboards | 0:ea0715867677 | 18 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 19 | } |
Hotboards | 0:ea0715867677 | 20 | |
Hotboards | 0:ea0715867677 | 21 | Hotboards_leds::Hotboards_leds( PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 22 | { |
Hotboards | 0:ea0715867677 | 23 | _leds = 2; |
Hotboards | 0:ea0715867677 | 24 | _state = 0; |
Hotboards | 0:ea0715867677 | 25 | _on = on; |
Hotboards | 0:ea0715867677 | 26 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 27 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 28 | } |
Hotboards | 0:ea0715867677 | 29 | |
Hotboards | 0:ea0715867677 | 30 | Hotboards_leds::Hotboards_leds( PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 31 | { |
Hotboards | 0:ea0715867677 | 32 | _leds = 3; |
Hotboards | 0:ea0715867677 | 33 | _state = 0; |
Hotboards | 0:ea0715867677 | 34 | _on = on; |
Hotboards | 0:ea0715867677 | 35 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 36 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 37 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 38 | } |
Hotboards | 0:ea0715867677 | 39 | |
Hotboards | 0:ea0715867677 | 40 | Hotboards_leds::Hotboards_leds( PinName led3, PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 41 | { |
Hotboards | 0:ea0715867677 | 42 | _leds = 4; |
Hotboards | 0:ea0715867677 | 43 | _state = 0; |
Hotboards | 0:ea0715867677 | 44 | _on = on; |
Hotboards | 0:ea0715867677 | 45 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 46 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 47 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 48 | begin( 3, led3 ); |
Hotboards | 0:ea0715867677 | 49 | } |
Hotboards | 0:ea0715867677 | 50 | |
Hotboards | 0:ea0715867677 | 51 | Hotboards_leds::Hotboards_leds( PinName led4, PinName led3, PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 52 | { |
Hotboards | 0:ea0715867677 | 53 | _leds = 5; |
Hotboards | 0:ea0715867677 | 54 | _state = 0; |
Hotboards | 0:ea0715867677 | 55 | _on = on; |
Hotboards | 0:ea0715867677 | 56 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 57 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 58 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 59 | begin( 3, led3 ); |
Hotboards | 0:ea0715867677 | 60 | begin( 4, led4 ); |
Hotboards | 0:ea0715867677 | 61 | } |
Hotboards | 0:ea0715867677 | 62 | |
Hotboards | 0:ea0715867677 | 63 | Hotboards_leds::Hotboards_leds( PinName led5, PinName led4, PinName led3, PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 64 | { |
Hotboards | 0:ea0715867677 | 65 | _leds = 6; |
Hotboards | 0:ea0715867677 | 66 | _state = 0; |
Hotboards | 0:ea0715867677 | 67 | _on = on; |
Hotboards | 0:ea0715867677 | 68 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 69 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 70 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 71 | begin( 3, led3 ); |
Hotboards | 0:ea0715867677 | 72 | begin( 4, led4 ); |
Hotboards | 0:ea0715867677 | 73 | begin( 5, led5 ); |
Hotboards | 0:ea0715867677 | 74 | } |
Hotboards | 0:ea0715867677 | 75 | |
Hotboards | 0:ea0715867677 | 76 | Hotboards_leds::Hotboards_leds( PinName led6, PinName led5, PinName led4, PinName led3, PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 77 | { |
Hotboards | 0:ea0715867677 | 78 | _leds = 7; |
Hotboards | 0:ea0715867677 | 79 | _state = 0; |
Hotboards | 0:ea0715867677 | 80 | _on = on; |
Hotboards | 0:ea0715867677 | 81 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 82 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 83 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 84 | begin( 3, led3 ); |
Hotboards | 0:ea0715867677 | 85 | begin( 4, led4 ); |
Hotboards | 0:ea0715867677 | 86 | begin( 5, led5 ); |
Hotboards | 0:ea0715867677 | 87 | begin( 6, led6 ); |
Hotboards | 0:ea0715867677 | 88 | } |
Hotboards | 0:ea0715867677 | 89 | |
Hotboards | 0:ea0715867677 | 90 | Hotboards_leds::Hotboards_leds( PinName led7, PinName led6, PinName led5, PinName led4, PinName led3, PinName led2, PinName led1, PinName led0, bool on ) |
Hotboards | 0:ea0715867677 | 91 | { |
Hotboards | 0:ea0715867677 | 92 | _leds = 8; |
Hotboards | 0:ea0715867677 | 93 | _state = 0; |
Hotboards | 0:ea0715867677 | 94 | _on = on; |
Hotboards | 0:ea0715867677 | 95 | begin( 0, led0 ); |
Hotboards | 0:ea0715867677 | 96 | begin( 1, led1 ); |
Hotboards | 0:ea0715867677 | 97 | begin( 2, led2 ); |
Hotboards | 0:ea0715867677 | 98 | begin( 3, led3 ); |
Hotboards | 0:ea0715867677 | 99 | begin( 4, led4 ); |
Hotboards | 0:ea0715867677 | 100 | begin( 5, led5 ); |
Hotboards | 0:ea0715867677 | 101 | begin( 6, led6 ); |
Hotboards | 0:ea0715867677 | 102 | begin( 7, led7 ); |
Hotboards | 0:ea0715867677 | 103 | } |
Hotboards | 0:ea0715867677 | 104 | |
Hotboards | 0:ea0715867677 | 105 | void Hotboards_leds::turnOn( uint8_t led ) |
Hotboards | 0:ea0715867677 | 106 | { |
Hotboards | 0:ea0715867677 | 107 | bitWrite( _state, led, _on ); |
Hotboards | 0:ea0715867677 | 108 | _pin[ led ]->write( bitRead( _state, led ) ); |
Hotboards | 0:ea0715867677 | 109 | //_pin[ led ]->write( 1 ); |
Hotboards | 0:ea0715867677 | 110 | } |
Hotboards | 0:ea0715867677 | 111 | void Hotboards_leds::turnOff( uint8_t led ) |
Hotboards | 0:ea0715867677 | 112 | { |
Hotboards | 0:ea0715867677 | 113 | bitWrite( _state, led, !_on ); |
Hotboards | 0:ea0715867677 | 114 | _pin[ led ]->write( bitRead( _state, led ) ); |
Hotboards | 0:ea0715867677 | 115 | //_pin[ led ]->write( 0 ); |
Hotboards | 0:ea0715867677 | 116 | } |
Hotboards | 0:ea0715867677 | 117 | |
Hotboards | 0:ea0715867677 | 118 | void Hotboards_leds::toggle( uint8_t led ) |
Hotboards | 0:ea0715867677 | 119 | { |
Hotboards | 0:ea0715867677 | 120 | if( bitRead( _state, led ) == _on ) |
Hotboards | 0:ea0715867677 | 121 | { |
Hotboards | 0:ea0715867677 | 122 | turnOff( led ); |
Hotboards | 0:ea0715867677 | 123 | } |
Hotboards | 0:ea0715867677 | 124 | else |
Hotboards | 0:ea0715867677 | 125 | { |
Hotboards | 0:ea0715867677 | 126 | turnOn( led ); |
Hotboards | 0:ea0715867677 | 127 | } |
Hotboards | 0:ea0715867677 | 128 | } |
Hotboards | 0:ea0715867677 | 129 | |
Hotboards | 0:ea0715867677 | 130 | uint8_t Hotboards_leds::read( uint8_t led ) |
Hotboards | 0:ea0715867677 | 131 | { |
Hotboards | 0:ea0715867677 | 132 | uint8_t i; |
Hotboards | 0:ea0715867677 | 133 | uint8_t val = 0; |
Hotboards | 0:ea0715867677 | 134 | |
Hotboards | 0:ea0715867677 | 135 | if( led == 0xff ) |
Hotboards | 0:ea0715867677 | 136 | { |
Hotboards | 0:ea0715867677 | 137 | for( i=0 ; i<_leds ; i++ ) |
Hotboards | 0:ea0715867677 | 138 | { |
Hotboards | 0:ea0715867677 | 139 | bitWrite( val, i, bitRead( _state, i ) ); |
Hotboards | 0:ea0715867677 | 140 | } |
Hotboards | 0:ea0715867677 | 141 | } |
Hotboards | 0:ea0715867677 | 142 | else |
Hotboards | 0:ea0715867677 | 143 | { |
Hotboards | 0:ea0715867677 | 144 | val = bitRead( _state, led ); |
Hotboards | 0:ea0715867677 | 145 | } |
Hotboards | 0:ea0715867677 | 146 | return val; |
Hotboards | 0:ea0715867677 | 147 | } |
Hotboards | 0:ea0715867677 | 148 | |
Hotboards | 0:ea0715867677 | 149 | void Hotboards_leds::write( uint8_t val ) |
Hotboards | 0:ea0715867677 | 150 | { |
Hotboards | 0:ea0715867677 | 151 | uint8_t i; |
Hotboards | 0:ea0715867677 | 152 | for( i=0 ; i<_leds ; i++ ) |
Hotboards | 0:ea0715867677 | 153 | { |
Hotboards | 0:ea0715867677 | 154 | if( bitRead( val, i ) ) |
Hotboards | 0:ea0715867677 | 155 | { |
Hotboards | 0:ea0715867677 | 156 | turnOn( i ); |
Hotboards | 0:ea0715867677 | 157 | } |
Hotboards | 0:ea0715867677 | 158 | else |
Hotboards | 0:ea0715867677 | 159 | { |
Hotboards | 0:ea0715867677 | 160 | turnOff( i ); |
Hotboards | 0:ea0715867677 | 161 | } |
Hotboards | 0:ea0715867677 | 162 | } |
Hotboards | 0:ea0715867677 | 163 | } |
Hotboards | 0:ea0715867677 | 164 | |
Hotboards | 0:ea0715867677 | 165 | void Hotboards_leds::begin( uint8_t led, PinName pin ) |
Hotboards | 0:ea0715867677 | 166 | { |
Hotboards | 0:ea0715867677 | 167 | // set the digital outpout that holds the led |
Hotboards | 0:ea0715867677 | 168 | _pin[ led ] = new DigitalOut( pin ); |
Hotboards | 0:ea0715867677 | 169 | // turn off led (as initial state) |
Hotboards | 0:ea0715867677 | 170 | bitWrite( _state, led, !_on ); |
Hotboards | 0:ea0715867677 | 171 | _pin[ led ]->write( !_on ); |
Hotboards | 0:ea0715867677 | 172 | } |