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| /*******************************************/
/* */
/* Prise de Controle du Bus Pirate */
/* */
/*-----------------------------------------*/
/* */
/* MAX7219 - Deux Bargraphes */
/* */
/*******************************************/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <libcom.h>
unsigned char cTab1[28][5] =
{
{1, 0x01,0x00,0x00,0x00}, {1, 0x01,0x04,0x00,0x00}, {1, 0x01,0x06,0x00,0x00}, {1, 0x01,0x07,0x00,0x00},
{2, 0x01,0x0B,0x02,0x00}, {2, 0x01,0x09,0x02,0x04}, {2, 0x01,0x08,0x02,0x06}, {2, 0x01,0x00,0x02,0x17},
{2, 0x02,0x9B,0x03,0x00}, {2, 0x02,0x99,0x03,0x44}, {2, 0x02,0x88,0x03,0x66}, {2, 0x02,0x00,0x03,0x76},
{2, 0x03,0xB2,0x04,0x00}, {2, 0x03,0x90,0x04,0x40}, {2, 0x03,0x80,0x04,0x60}, {2, 0x03,0x00,0x04,0x71},
{2, 0x04,0xB9,0x05,0x00}, {2, 0x04,0x99,0x05,0x44}, {2, 0x04,0x88,0x05,0x66}, {2, 0x04,0x00,0x05,0x67},
{2, 0x05,0x2B,0x06,0x00}, {2, 0x05,0x09,0x06,0x04}, {2, 0x05,0x08,0x06,0x06}, {2, 0x05,0x00,0x06,0x07},
{1, 0x06,0x0B,0x00,0x00}, {1, 0x06,0x09,0x00,0x00}, {1, 0x06,0x08,0x00,0x00}, {1, 0x06,0x00,0x00,0x00}};
unsigned char cTab2[14] = {0x00,0x04,0x44,0x40,0x02,0x22,0x20,0x01,0x11,0x10,0x08,0x88,0x80,0x00};
unsigned char cTab3[24] = {0x04,0x06,0x07,0x0F,0x04,0x06,0x07,0x0F,0x04,0x06,0x07,0x0F,0x44,0x66,0x77,0xFF,0x44,0x66,0x77,0xFF,0x40,0x60,0x70,0xF0};
/*==============================*/
/* */
/* Procédure Principale */
/* */
/*==============================*/
int main(void)
{
int i, j, k, l;
char sBuffer[256];
if (!COM_Open(5))
exit(-1);
COM_Send("\n");
COM_Send("#\n"); /* Reset */
COM_Send("b\n");
COM_Send("9\n"); /* Baudrate */
COM_Send(" ");
COM_Send("m\n");
COM_Send("5\n"); /* SPI */
/*---------------------------------*/
/* Initialisation Mode SPI */
/*---------------------------------*/
COM_Send("4\n"); /* Set speed: */
COM_Send("1\n"); /* Clock polarity: */
COM_Send("2\n"); /* Output clock edge: */
COM_Send("1\n"); /* Input sample phase: */
COM_Send("2\n"); /* CS: */
COM_Send("2\n"); /* Select output type: */
COM_Send("v\n"); /* Show volts/states */
/*-----------------------------------*/
/* Initialisation du MAX7219 */
/*-----------------------------------*/
COM_Send("[0x0C,0x00]\n"); /* Shutdown : Shutdown Mode */
COM_Send("[0x0F,0x00]\n"); /* Display Test : Normal operation */
COM_Send("[0x09,0x00]\n"); /* Dcode mode : No decode */
COM_Send("[0x0A,0xFF]\n"); /* Intensity : max=0x0F */
COM_Send("[0x0B,0x05]\n"); /* Scan Limit : digits 0-5 */
for (i=1; i<7; i++)
{
sprintf(sBuffer,"[0x%02X,0x00]\n", i);
COM_Send(sBuffer);
}
COM_Send("[0x0C,0x01]\n"); /* Shutdown : Normal operation */
/*-----------------------*/
/* Affichage N°1 */
/*-----------------------*/
i=0; j=0; k=0;
while (i < 4)
{
if (j == 0) { k++; if (k>27) { k=26; j=1; i++; } }
else { k--; if (k< 0) { k= 0; j=0; i++; } }
if (cTab1[k][0] == 1) sprintf(sBuffer, "[0x%02X,0x%02X]\n", cTab1[k][1], cTab1[k][2]);
else sprintf(sBuffer, "[0x%02X,0x%02X][0x%02X,0x%02X]\n", cTab1[k][1], cTab1[k][2], cTab1[k][3], cTab1[k][4]);
COM_Send(sBuffer);
}
/*-----------------------*/
/* Affichage N°2 */
/*-----------------------*/
i=0; j=0; k=1; l=0;
while (i < 4)
{
if (j == 0) { l++; if (l>13) { l= 1; k++; if (k> 6) { l=12; k=6; j= 1; i++; } } }
else { l--; if (l< 0) { l=12; k--; if (k< 1) { l= 1; k=1; j= 0; i++; } } }
sprintf(sBuffer, "[0x%02X,0x%02X]\n", k, cTab2[l]);
COM_Send(sBuffer);
}
/*-----------------------*/
/* Affichage N°3 */
/*-----------------------*/
for (i=1; i<7; i++)
for (j=0; j<4; j++)
{
sprintf(sBuffer, "[0x%02X,0x%02X]\n", i, cTab3[(i-1)*4+j]);
COM_Send(sBuffer);
}
COM_Delay(1000);
/*----------------------------*/
/* Fin de l'affichage */
/*----------------------------*/
COM_Send("[0x0C,0x00]\n"); /* Shutdown : Shutdown mode */
COM_Pause(5);
COM_Send("#\n"); /* Reset */
COM_Close();
exit(0);
} |
MAX7219 avec deux bargraphes mais aussi avec quatre digits
de mon aide, vous pouvez cliquer sur 
.
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Envoyé par Jackk
), un tableau qui fixe le courant par segment en fonction d'une résistance et de la tension de seuil du type de LED utilisé par l'afficheur ne saurait être un générateur de courant, lequel par définition fournit un courant sans se soucier des tensions en jeu (dans certaines limites quand même).
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