This is a simple demo code for the PCA9622_LED8x8 library. arget hardware : "I2C 8x8 LED matrix board" from Switch Science https://www.switch-science.com/catalog/2071/
Dependencies: PCA9622_LED8x8 mbed
Demo program for LED matrix.
4 patterns of moving image are available.
Since the hello world program is too simple, this program has been made for demo purpose ;)
Very simple hello world program is available here.
Import programPCA9622_LED8x8_Hello
This is a very simple sample code for the PCA9622_LED8x8 library. arget hardware : "I2C 8x8 LED matrix board" from Switch Science https://www.switch-science.com/catalog/2071/
Component page is available
Please refer to the component page for for more information.
main.cpp@1:aede5927109a, 2015-02-26 (annotated)
- Committer:
- nxp_ip
- Date:
- Thu Feb 26 00:08:06 2015 +0000
- Revision:
- 1:aede5927109a
- Parent:
- 0:fa07b945e836
Version with latest library "PCA9622_LED8x8 v1.1.1"
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
nxp_ip | 0:fa07b945e836 | 1 | /** |
nxp_ip | 0:fa07b945e836 | 2 | * A demo code for the PCA9622 LED 8x8 library |
nxp_ip | 0:fa07b945e836 | 3 | * |
nxp_ip | 0:fa07b945e836 | 4 | * @author Tedd OKANO |
nxp_ip | 0:fa07b945e836 | 5 | * @version 1.0 |
nxp_ip | 0:fa07b945e836 | 6 | * @date 03-Dec-2014 |
nxp_ip | 0:fa07b945e836 | 7 | * |
nxp_ip | 0:fa07b945e836 | 8 | * This is a sample demo code for the PCA9622_LED8x8 library. |
nxp_ip | 0:fa07b945e836 | 9 | * Target hardware : "I2C 8x8 LED matrix board" from Switch Science |
nxp_ip | 0:fa07b945e836 | 10 | * https://www.switch-science.com/catalog/2071/ |
nxp_ip | 0:fa07b945e836 | 11 | * |
nxp_ip | 0:fa07b945e836 | 12 | * The I2C LED controller PCA9622 is used on this module |
nxp_ip | 0:fa07b945e836 | 13 | * that ebables to control the LEDs with PWM brightness control. |
nxp_ip | 0:fa07b945e836 | 14 | * |
nxp_ip | 0:fa07b945e836 | 15 | * For more information about the PCA9622: |
nxp_ip | 0:fa07b945e836 | 16 | * http://www.nxp.com/documents/data_sheet/PCA9622.pdf |
nxp_ip | 0:fa07b945e836 | 17 | */ |
nxp_ip | 0:fa07b945e836 | 18 | |
nxp_ip | 0:fa07b945e836 | 19 | #include "mbed.h" |
nxp_ip | 0:fa07b945e836 | 20 | #include "PCA9622_LED8x8.h" |
nxp_ip | 0:fa07b945e836 | 21 | |
nxp_ip | 0:fa07b945e836 | 22 | // Choose a target platform from next list |
nxp_ip | 0:fa07b945e836 | 23 | PCA9622_LED8x8 matrix( p28, p27 ); // for 40pin type mbed |
nxp_ip | 0:fa07b945e836 | 24 | //PCA9622_LED8x8 matrix( D14, D15 ); // for Arduino type mbed |
nxp_ip | 0:fa07b945e836 | 25 | //PCA9622_LED8x8 matrix( dp5, dp27 ); // for mbed LPC1114 |
nxp_ip | 0:fa07b945e836 | 26 | |
nxp_ip | 0:fa07b945e836 | 27 | Ticker _ticker; |
nxp_ip | 0:fa07b945e836 | 28 | int demo_mode = 0; |
nxp_ip | 0:fa07b945e836 | 29 | |
nxp_ip | 0:fa07b945e836 | 30 | void demo_mode_change(); |
nxp_ip | 0:fa07b945e836 | 31 | float func0( int x, int y, int t ); // function to make 8x8 image |
nxp_ip | 0:fa07b945e836 | 32 | float func1( int x, int y, int t ); // function to make 8x8 image |
nxp_ip | 0:fa07b945e836 | 33 | float func2( int x, int y, int t ); // function to make 8x8 image |
nxp_ip | 0:fa07b945e836 | 34 | float func3( int x, int y, int t ); // function to make 8x8 image |
nxp_ip | 0:fa07b945e836 | 35 | |
nxp_ip | 0:fa07b945e836 | 36 | typedef float (*func_ptr)( int x, int y, int t ); |
nxp_ip | 0:fa07b945e836 | 37 | |
nxp_ip | 0:fa07b945e836 | 38 | func_ptr fp[] = { |
nxp_ip | 0:fa07b945e836 | 39 | func0, |
nxp_ip | 0:fa07b945e836 | 40 | func1, |
nxp_ip | 0:fa07b945e836 | 41 | func2, |
nxp_ip | 0:fa07b945e836 | 42 | func3 |
nxp_ip | 0:fa07b945e836 | 43 | }; |
nxp_ip | 0:fa07b945e836 | 44 | |
nxp_ip | 0:fa07b945e836 | 45 | int main() |
nxp_ip | 0:fa07b945e836 | 46 | { |
nxp_ip | 0:fa07b945e836 | 47 | float image[ 8 ][ 8 ]; // |
nxp_ip | 0:fa07b945e836 | 48 | int count = 0; |
nxp_ip | 0:fa07b945e836 | 49 | |
nxp_ip | 0:fa07b945e836 | 50 | _ticker.attach( &demo_mode_change, 10 ); |
nxp_ip | 0:fa07b945e836 | 51 | matrix.start(); |
nxp_ip | 0:fa07b945e836 | 52 | |
nxp_ip | 0:fa07b945e836 | 53 | while(1) { |
nxp_ip | 0:fa07b945e836 | 54 | |
nxp_ip | 0:fa07b945e836 | 55 | // making 8x8 image to "image" array |
nxp_ip | 0:fa07b945e836 | 56 | for ( int i = 0; i < 8; i++ ) |
nxp_ip | 0:fa07b945e836 | 57 | for ( int j = 0; j < 8; j++ ) |
nxp_ip | 0:fa07b945e836 | 58 | image[ i ][ j ] = (*fp[ demo_mode % (sizeof( fp ) / sizeof( func_ptr )) ])( i, j, count ); |
nxp_ip | 0:fa07b945e836 | 59 | |
nxp_ip | 0:fa07b945e836 | 60 | // set the image into library internal bufer |
nxp_ip | 0:fa07b945e836 | 61 | matrix.set_data( image ); |
nxp_ip | 0:fa07b945e836 | 62 | |
nxp_ip | 0:fa07b945e836 | 63 | count++; |
nxp_ip | 0:fa07b945e836 | 64 | wait( 0.05 ); |
nxp_ip | 0:fa07b945e836 | 65 | } |
nxp_ip | 0:fa07b945e836 | 66 | } |
nxp_ip | 0:fa07b945e836 | 67 | |
nxp_ip | 0:fa07b945e836 | 68 | void demo_mode_change() |
nxp_ip | 0:fa07b945e836 | 69 | { |
nxp_ip | 0:fa07b945e836 | 70 | demo_mode++; |
nxp_ip | 0:fa07b945e836 | 71 | } |
nxp_ip | 0:fa07b945e836 | 72 | |
nxp_ip | 0:fa07b945e836 | 73 | float func0( int x, int y, int t ) |
nxp_ip | 0:fa07b945e836 | 74 | { |
nxp_ip | 0:fa07b945e836 | 75 | // NXP logo |
nxp_ip | 0:fa07b945e836 | 76 | |
nxp_ip | 0:fa07b945e836 | 77 | static char bm_nxp[] = { |
nxp_ip | 0:fa07b945e836 | 78 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
nxp_ip | 0:fa07b945e836 | 79 | |
nxp_ip | 0:fa07b945e836 | 80 | 0xFF, 0xFF, 0xFF, 0xF0, 0x78, 0x3C, 0x1E, 0x0F, |
nxp_ip | 0:fa07b945e836 | 81 | 0xFF, 0x7E, 0xBD, 0xDB, 0xE7, 0x7E, 0x3C, 0x18, |
nxp_ip | 0:fa07b945e836 | 82 | 0x3C, 0x7E, 0xE7, 0xDB, 0xBD, 0x7E, 0xFF, 0xCC, |
nxp_ip | 0:fa07b945e836 | 83 | 0xCC, 0xCC, 0xCC, 0xCC, 0xFC, 0x78, 0x78, |
nxp_ip | 0:fa07b945e836 | 84 | |
nxp_ip | 0:fa07b945e836 | 85 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
nxp_ip | 0:fa07b945e836 | 86 | }; |
nxp_ip | 0:fa07b945e836 | 87 | |
nxp_ip | 0:fa07b945e836 | 88 | int index; |
nxp_ip | 0:fa07b945e836 | 89 | int direction = 0; |
nxp_ip | 0:fa07b945e836 | 90 | |
nxp_ip | 0:fa07b945e836 | 91 | direction = (t / (sizeof( bm_nxp ) - 8)) & 0x1; |
nxp_ip | 0:fa07b945e836 | 92 | index = (t % (sizeof( bm_nxp ) - 8)); |
nxp_ip | 0:fa07b945e836 | 93 | index = direction ? (sizeof( bm_nxp ) - 8) - index : index; |
nxp_ip | 0:fa07b945e836 | 94 | index = index + y; |
nxp_ip | 0:fa07b945e836 | 95 | |
nxp_ip | 0:fa07b945e836 | 96 | return (bm_nxp[ index ] >> (7 - x)) & 0x1; |
nxp_ip | 0:fa07b945e836 | 97 | } |
nxp_ip | 0:fa07b945e836 | 98 | |
nxp_ip | 0:fa07b945e836 | 99 | float func1( int x, int y, int t ) |
nxp_ip | 0:fa07b945e836 | 100 | { |
nxp_ip | 0:fa07b945e836 | 101 | // ripple |
nxp_ip | 0:fa07b945e836 | 102 | |
nxp_ip | 0:fa07b945e836 | 103 | const float display_offset = 3.5; |
nxp_ip | 0:fa07b945e836 | 104 | //const float display_offset = 0.0; |
nxp_ip | 0:fa07b945e836 | 105 | const float size = 0.3; |
nxp_ip | 0:fa07b945e836 | 106 | const float eccentricity_cycle = 0.0; |
nxp_ip | 0:fa07b945e836 | 107 | const float eccentricity_amplitude = 0.0; |
nxp_ip | 0:fa07b945e836 | 108 | |
nxp_ip | 0:fa07b945e836 | 109 | float xx; |
nxp_ip | 0:fa07b945e836 | 110 | float yy; |
nxp_ip | 0:fa07b945e836 | 111 | float tt; |
nxp_ip | 0:fa07b945e836 | 112 | |
nxp_ip | 0:fa07b945e836 | 113 | float s; |
nxp_ip | 0:fa07b945e836 | 114 | |
nxp_ip | 0:fa07b945e836 | 115 | xx = ((float)x - display_offset + eccentricity_amplitude * sin( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 116 | yy = ((float)y - display_offset + eccentricity_amplitude * cos( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 117 | tt = sin( (float)t * 0.2 ) + sin( (float)t * 0.1 ); |
nxp_ip | 0:fa07b945e836 | 118 | |
nxp_ip | 0:fa07b945e836 | 119 | s = cos( powf( xx * xx + yy * yy, 0.5 ) - tt ); |
nxp_ip | 0:fa07b945e836 | 120 | return ( powf( s, 4.0 ) ); |
nxp_ip | 0:fa07b945e836 | 121 | } |
nxp_ip | 0:fa07b945e836 | 122 | |
nxp_ip | 0:fa07b945e836 | 123 | float func2( int x, int y, int t ) |
nxp_ip | 0:fa07b945e836 | 124 | { |
nxp_ip | 0:fa07b945e836 | 125 | // moving dot |
nxp_ip | 0:fa07b945e836 | 126 | |
nxp_ip | 0:fa07b945e836 | 127 | const float display_offset = 3.5; |
nxp_ip | 0:fa07b945e836 | 128 | //const float display_offset = 0.0; |
nxp_ip | 0:fa07b945e836 | 129 | const float size = 0.3; |
nxp_ip | 0:fa07b945e836 | 130 | const float eccentricity_cycle = 0.25; |
nxp_ip | 0:fa07b945e836 | 131 | const float eccentricity_amplitude = 2.5; |
nxp_ip | 0:fa07b945e836 | 132 | |
nxp_ip | 0:fa07b945e836 | 133 | float xx; |
nxp_ip | 0:fa07b945e836 | 134 | float yy; |
nxp_ip | 0:fa07b945e836 | 135 | float tt; |
nxp_ip | 0:fa07b945e836 | 136 | float s; |
nxp_ip | 0:fa07b945e836 | 137 | float d; |
nxp_ip | 0:fa07b945e836 | 138 | |
nxp_ip | 0:fa07b945e836 | 139 | |
nxp_ip | 0:fa07b945e836 | 140 | xx = ((float)x - display_offset + eccentricity_amplitude * sin( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 141 | yy = ((float)y - display_offset + eccentricity_amplitude * cos( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 142 | tt = (float)t * 0.2; |
nxp_ip | 0:fa07b945e836 | 143 | d = powf( xx * xx + yy * yy, 0.5 ) - tt * 0.0; |
nxp_ip | 0:fa07b945e836 | 144 | d = d == 0.0 ? 1e-12 : d; |
nxp_ip | 0:fa07b945e836 | 145 | d *= 4.0; |
nxp_ip | 0:fa07b945e836 | 146 | |
nxp_ip | 0:fa07b945e836 | 147 | s = sin( d ) / d; |
nxp_ip | 0:fa07b945e836 | 148 | return ( powf( s, 4.0 ) ); |
nxp_ip | 0:fa07b945e836 | 149 | } |
nxp_ip | 0:fa07b945e836 | 150 | |
nxp_ip | 0:fa07b945e836 | 151 | float func3( int x, int y, int t ) |
nxp_ip | 0:fa07b945e836 | 152 | { |
nxp_ip | 0:fa07b945e836 | 153 | // ripple with offset |
nxp_ip | 0:fa07b945e836 | 154 | |
nxp_ip | 0:fa07b945e836 | 155 | const float display_offset = 3.5; |
nxp_ip | 0:fa07b945e836 | 156 | //const float display_offset = 0.0; |
nxp_ip | 0:fa07b945e836 | 157 | const float size = 0.3; |
nxp_ip | 0:fa07b945e836 | 158 | const float eccentricity_cycle = 0.25; |
nxp_ip | 0:fa07b945e836 | 159 | const float eccentricity_amplitude = 2.5; |
nxp_ip | 0:fa07b945e836 | 160 | |
nxp_ip | 0:fa07b945e836 | 161 | float xx; |
nxp_ip | 0:fa07b945e836 | 162 | float yy; |
nxp_ip | 0:fa07b945e836 | 163 | float tt; |
nxp_ip | 0:fa07b945e836 | 164 | |
nxp_ip | 0:fa07b945e836 | 165 | float s; |
nxp_ip | 0:fa07b945e836 | 166 | |
nxp_ip | 0:fa07b945e836 | 167 | xx = ((float)x - display_offset + eccentricity_amplitude * sin( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 168 | yy = ((float)y - display_offset + eccentricity_amplitude * cos( (float)t * eccentricity_cycle )) * size; |
nxp_ip | 0:fa07b945e836 | 169 | tt = (float)t * 0.2; |
nxp_ip | 0:fa07b945e836 | 170 | |
nxp_ip | 0:fa07b945e836 | 171 | s = cos( powf( xx * xx + yy * yy, 0.5 ) - tt ); |
nxp_ip | 0:fa07b945e836 | 172 | return ( powf( s, 4.0 ) ); |
nxp_ip | 0:fa07b945e836 | 173 | } |
nxp_ip | 0:fa07b945e836 | 174 |