Miguel Castañeda / Mbed 2 deprecated spimatriz

matriz 8X8 SPI

Dependencies:   MAX7219 mbed

Fork of Nucleo_blink_led by Miguel Castañeda

Funcionamiento matriz 8X8 SPI con integrado MAX7219 utilizando tarjeta NUCLEO-FR446RE

Materiales:

  • Tarjeta NUCLEO-FR446RE
  • Módulo Matriz 8X8 con integrado MAX7219
  • Jumpers
  • Cable de conexión usb/miniusb

/media/uploads/miguelmstein/20170316_101022.jpg

Pines utilizados:

  • VCC - 5V
  • GND - GND
  • DIN - SPI3_MOSI / PC_12
  • CS - SPI1_SSEL / PA_15
  • CLK - SPI3_SCLK

/media/uploads/miguelmstein/20170316_100825.jpg

Procedimiento

  • Se conectaron los pines del módulo de la matriz al pinout de la tarjeta utilizando los jumpers hembra/hembra.
  • Se conecto el cable de alimentación y de trasnferencia de datos.
  • Luego con el código siguiente se compiló y se extrajo el archivo .bin que se copio a la carpeta de la tarjeta.

Video del montaje con el programa

/media/uploads/miguelmstein/20170316_091054.mp4

  • Nota: El código base se extrajo de un foro de mbed sobre como utilizar una matriz 8x8 con SPI y MAX7219.

Link del foro: https://developer.mbed.org/forum/mbed/topic/129/

  • Nota: El código fue modificado para funcionar con una sola matriz. El código se tradujo y cada funcion se explica en español. Con este código se puede mostrar dentro de lo posible lo que se quiera en una matriz de LEDs de 8x8 ya sea dígitos, letras, figuras, entre otros. Para modificar lo que se quiere mostrar basta con modificar el ultimo digito de cada columna en el código especificada.

main.cpp@1:1f5dc3c1d540, 2017-03-15 (annotated)

Committer:
miguelmstein
Date:
Wed Mar 15 23:48:50 2017 +0000
Revision:
1:1f5dc3c1d540
Parent:
0:97b0a853130e
Child:
2:163373cf2b79
p1; ; ;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
miguelmstein 0:97b0a853130e 1 #include "mbed.h"
miguelmstein 1:1f5dc3c1d540 2 #include "max7219.h"
miguelmstein 1:1f5dc3c1d540 3
miguelmstein 1:1f5dc3c1d540 4 // PC_12: DIN, PC_10: CLK, PA_15: LOAD/CS
miguelmstein 1:1f5dc3c1d540 5 SPI max72_spi(PC_12, NC, PC_10);
miguelmstein 1:1f5dc3c1d540 6 DigitalOut load(PA_15);
miguelmstein 1:1f5dc3c1d540 7
miguelmstein 1:1f5dc3c1d540 8 // define registros de matriz MAX7219
miguelmstein 1:1f5dc3c1d540 9 #define max7219_reg_noop 0x00
miguelmstein 1:1f5dc3c1d540 10 #define max7219_reg_digit0 0x01
miguelmstein 1:1f5dc3c1d540 11 #define max7219_reg_digit1 0x02
miguelmstein 1:1f5dc3c1d540 12 #define max7219_reg_digit2 0x03
miguelmstein 1:1f5dc3c1d540 13 #define max7219_reg_digit3 0x04
miguelmstein 1:1f5dc3c1d540 14 #define max7219_reg_digit4 0x05
miguelmstein 1:1f5dc3c1d540 15 #define max7219_reg_digit5 0x06
miguelmstein 1:1f5dc3c1d540 16 #define max7219_reg_digit6 0x07
miguelmstein 1:1f5dc3c1d540 17 #define max7219_reg_digit7 0x08
miguelmstein 1:1f5dc3c1d540 18 #define max7219_reg_decodeMode 0x09
miguelmstein 1:1f5dc3c1d540 19 #define max7219_reg_intensity 0x0a
miguelmstein 1:1f5dc3c1d540 20 #define max7219_reg_scanLimit 0x0b
miguelmstein 1:1f5dc3c1d540 21 #define max7219_reg_shutdown 0x0c
miguelmstein 1:1f5dc3c1d540 22 #define max7219_reg_displayTest 0x0f
miguelmstein 1:1f5dc3c1d540 23
miguelmstein 1:1f5dc3c1d540 24 #define LOW 0
miguelmstein 1:1f5dc3c1d540 25 #define HIGH 1
miguelmstein 1:1f5dc3c1d540 26 #define MHZ 1000000
miguelmstein 1:1f5dc3c1d540 27
miguelmstein 1:1f5dc3c1d540 28 void maxSingle( int reg, int col) {
miguelmstein 1:1f5dc3c1d540 29 //maxSingle es la funcion facil para usar una sola matriz max7219
miguelmstein 1:1f5dc3c1d540 30 load = LOW; // comienza
miguelmstein 1:1f5dc3c1d540 31 max72_spi.write(reg); // especifica registro
miguelmstein 1:1f5dc3c1d540 32 max72_spi.write(col); // coloca datos
miguelmstein 1:1f5dc3c1d540 33 load = HIGH; // acegura que los datos estan cargados(en el cambio en alto de LOAD/CS)
miguelmstein 1:1f5dc3c1d540 34 }
miguelmstein 1:1f5dc3c1d540 35
miguelmstein 1:1f5dc3c1d540 36 void setup () {
miguelmstein 1:1f5dc3c1d540 37 // iniciacion de la matriz MAX7219
miguelmstein 1:1f5dc3c1d540 38 // configuracion SPI : 8 bits, modo 0
miguelmstein 1:1f5dc3c1d540 39 max72_spi.format(8, 0);
miguelmstein 1:1f5dc3c1d540 40
miguelmstein 1:1f5dc3c1d540 41 // frecuencia MAX7219(10 MHZ)
miguelmstein 1:1f5dc3c1d540 42
miguelmstein 1:1f5dc3c1d540 43 maxSingle(max7219_reg_scanLimit, 0x07);
miguelmstein 1:1f5dc3c1d540 44 maxSingle(max7219_reg_decodeMode, 0x00); // usando una matriz led (sin digitos)
miguelmstein 1:1f5dc3c1d540 45 maxSingle(max7219_reg_shutdown, 0x01); // no para modo apagado
miguelmstein 1:1f5dc3c1d540 46 maxSingle(max7219_reg_displayTest, 0x00); // no test de display
miguelmstein 1:1f5dc3c1d540 47 for (int e=1; e<=8; e++) { // registros vacios, apaga todos los LEDs
miguelmstein 1:1f5dc3c1d540 48 maxSingle(e,0);
miguelmstein 1:1f5dc3c1d540 49 }
miguelmstein 1:1f5dc3c1d540 50 maxSingle(max7219_reg_intensity, 0x00 & 0x0f); // con el primer registro se cambia intensidad luminica de la matriz. rango: 0x00 a 0x0f
miguelmstein 1:1f5dc3c1d540 51 }
miguelmstein 1:1f5dc3c1d540 52 int t;
miguelmstein 0:97b0a853130e 53 int main() {
miguelmstein 1:1f5dc3c1d540 54 setup ();
miguelmstein 1:1f5dc3c1d540 55 while (1){
miguelmstein 1:1f5dc3c1d540 56 if(t<=2000)
miguelmstein 1:1f5dc3c1d540 57 {
miguelmstein 1:1f5dc3c1d540 58 maxSingle(1,0); //columna 1
miguelmstein 1:1f5dc3c1d540 59 maxSingle(2,0); //columna 2
miguelmstein 1:1f5dc3c1d540 60 maxSingle(3,0); //columna 3
miguelmstein 1:1f5dc3c1d540 61 maxSingle(4,0); //columna 4
miguelmstein 1:1f5dc3c1d540 62 maxSingle(5,0); //columna 5
miguelmstein 1:1f5dc3c1d540 63 maxSingle(6,0); //columna 6
miguelmstein 1:1f5dc3c1d540 64 maxSingle(7,0); //columna 7
miguelmstein 1:1f5dc3c1d540 65 maxSingle(8,0); //columna 8
miguelmstein 1:1f5dc3c1d540 66
miguelmstein 1:1f5dc3c1d540 67 }
miguelmstein 1:1f5dc3c1d540 68 else if(t>=2001&&t<=4000)
miguelmstein 1:1f5dc3c1d540 69 {
miguelmstein 1:1f5dc3c1d540 70 maxSingle(1,8); //columna 1
miguelmstein 1:1f5dc3c1d540 71 maxSingle(2,16); //columna 2
miguelmstein 1:1f5dc3c1d540 72 maxSingle(3,36); //columna 3
miguelmstein 1:1f5dc3c1d540 73 maxSingle(4,154); //columna 4
miguelmstein 1:1f5dc3c1d540 74 maxSingle(5,89); //columna 5
miguelmstein 1:1f5dc3c1d540 75 maxSingle(6,36); //columna 6
miguelmstein 1:1f5dc3c1d540 76 maxSingle(7,8); //columna 7
miguelmstein 1:1f5dc3c1d540 77 maxSingle(8,16); //columna 8
miguelmstein 1:1f5dc3c1d540 78
miguelmstein 1:1f5dc3c1d540 79 }
miguelmstein 1:1f5dc3c1d540 80 else if(t>=4001&&t<=6000)
miguelmstein 1:1f5dc3c1d540 81 {
miguelmstein 1:1f5dc3c1d540 82 maxSingle(1,0); //columna 1
miguelmstein 1:1f5dc3c1d540 83 maxSingle(2,0); //columna 2
miguelmstein 1:1f5dc3c1d540 84 maxSingle(3,0); //columna 3
miguelmstein 1:1f5dc3c1d540 85 maxSingle(4,0); //columna 4
miguelmstein 1:1f5dc3c1d540 86 maxSingle(5,0); //columna 5
miguelmstein 1:1f5dc3c1d540 87 maxSingle(6,0); //columna 6
miguelmstein 1:1f5dc3c1d540 88 maxSingle(7,0); //columna 7
miguelmstein 1:1f5dc3c1d540 89 maxSingle(8,0); //columna 8
miguelmstein 1:1f5dc3c1d540 90
miguelmstein 1:1f5dc3c1d540 91 }
miguelmstein 1:1f5dc3c1d540 92 else if(t>=6001&&t<=8000)
miguelmstein 1:1f5dc3c1d540 93 {
miguelmstein 1:1f5dc3c1d540 94 maxSingle(1,8); //columna 1
miguelmstein 1:1f5dc3c1d540 95 maxSingle(2,16); //columna 2
miguelmstein 1:1f5dc3c1d540 96 maxSingle(3,36); //columna 3
miguelmstein 1:1f5dc3c1d540 97 maxSingle(4,154); //columna 4
miguelmstein 1:1f5dc3c1d540 98 maxSingle(5,89); //columna 5
miguelmstein 1:1f5dc3c1d540 99 maxSingle(6,36); //columna 6
miguelmstein 1:1f5dc3c1d540 100 maxSingle(7,8); //columna 7
miguelmstein 1:1f5dc3c1d540 101 maxSingle(8,16); //columna 8
miguelmstein 1:1f5dc3c1d540 102
miguelmstein 1:1f5dc3c1d540 103 }
miguelmstein 1:1f5dc3c1d540 104 else if(t>=8001&&t<=10000)
miguelmstein 1:1f5dc3c1d540 105 {
miguelmstein 1:1f5dc3c1d540 106 maxSingle(1,0); //columna 1
miguelmstein 1:1f5dc3c1d540 107 maxSingle(2,0); //columna 2
miguelmstein 1:1f5dc3c1d540 108 maxSingle(3,0); //columna 3
miguelmstein 1:1f5dc3c1d540 109 maxSingle(4,0); //columna 4
miguelmstein 1:1f5dc3c1d540 110 maxSingle(5,0); //columna 5
miguelmstein 1:1f5dc3c1d540 111 maxSingle(6,0); //columna 6
miguelmstein 1:1f5dc3c1d540 112 maxSingle(7,0); //columna 7
miguelmstein 1:1f5dc3c1d540 113 maxSingle(8,0); //columna 8
miguelmstein 1:1f5dc3c1d540 114
miguelmstein 1:1f5dc3c1d540 115 }
miguelmstein 1:1f5dc3c1d540 116 else if(t>=10001&&t<=12000)
miguelmstein 1:1f5dc3c1d540 117 {
miguelmstein 1:1f5dc3c1d540 118 maxSingle(1,8); //columna 1
miguelmstein 1:1f5dc3c1d540 119 maxSingle(2,16); //columna 2
miguelmstein 1:1f5dc3c1d540 120 maxSingle(3,36); //columna 3
miguelmstein 1:1f5dc3c1d540 121 maxSingle(4,154); //columna 4
miguelmstein 1:1f5dc3c1d540 122 maxSingle(5,89); //columna 5
miguelmstein 1:1f5dc3c1d540 123 maxSingle(6,36); //columna 6
miguelmstein 1:1f5dc3c1d540 124 maxSingle(7,8); //columna 7
miguelmstein 1:1f5dc3c1d540 125 maxSingle(8,16); //columna 8
miguelmstein 1:1f5dc3c1d540 126
miguelmstein 1:1f5dc3c1d540 127 }
miguelmstein 1:1f5dc3c1d540 128 else if(t>=12001&&t<=16000)
miguelmstein 1:1f5dc3c1d540 129 {
miguelmstein 1:1f5dc3c1d540 130 maxSingle(1,255); //columna 1
miguelmstein 1:1f5dc3c1d540 131 maxSingle(2,255); //columna 2
miguelmstein 1:1f5dc3c1d540 132 maxSingle(3,255); //columna 3
miguelmstein 1:1f5dc3c1d540 133 maxSingle(4,255); //columna 4
miguelmstein 1:1f5dc3c1d540 134 maxSingle(5,255); //columna 5
miguelmstein 1:1f5dc3c1d540 135 maxSingle(6,255); //columna 6
miguelmstein 1:1f5dc3c1d540 136 maxSingle(7,255); //columna 7
miguelmstein 1:1f5dc3c1d540 137 maxSingle(8,255); //columna 8
miguelmstein 1:1f5dc3c1d540 138 }
miguelmstein 1:1f5dc3c1d540 139
miguelmstein 1:1f5dc3c1d540 140 else
miguelmstein 1:1f5dc3c1d540 141 {
miguelmstein 1:1f5dc3c1d540 142 }
miguelmstein 1:1f5dc3c1d540 143 t=t+1;
miguelmstein 1:1f5dc3c1d540 144 if(t>=16000)
miguelmstein 1:1f5dc3c1d540 145 t=0;
miguelmstein 1:1f5dc3c1d540 146 else{}
miguelmstein 1:1f5dc3c1d540 147 }
miguelmstein 1:1f5dc3c1d540 148 }