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Dependencies:   mbed

main.cpp

Committer:
Giamarchi
Date:
2019-01-12
Revision:
0:531f33a2550d
Child:
1:95172f59262a

File content as of revision 0:531f33a2550d:

/*************************************/
//  YNCREA ISEN CSI3
//  Electronique Numérique
//
//  Cours : Systèmes à microcontrôleur
//  Prof : Frédéric Giamarchi
//
//  Exo 2.2 : Clignotemment de plusieurs Dels
/*************************************/
#include "mbed.h"

DigitalOut L0(PB_1);
DigitalOut L1(PB_2);
DigitalOut L2(PB_10);
DigitalOut L3(PB_11);
DigitalOut L4(PB_12);
DigitalOut L5(PB_13);
DigitalOut L6(PB_14);
DigitalOut L7(PB_15);

uint8_t L[8] = {L0, L1, L2, L3, L4, L5, L6, L7};

void set_8Dels(uint8_t position)
{
    L0 = position & 0x01;
    L1 = position & 0x02;
    L2 = position & 0x04;
    L3 = position & 0x08;
    L4 = position & 0x10;
    L5 = position & 0x20;
    L6 = position & 0x40;
    L7 = position & 0x80;
    
//    L[!position] = 0;
//    L[position] = 1; 
}

uint8_t compteur = 1;
uint8_t sens = 0;

int main()
{
    while(1)
    {
        wait(0.2);          // 200 ms
        if(!sens)
        {
            compteur<<=1;         // décalage d'un bit vers la gauche
            if(compteur == 0x80)
                sens = 1;
        }
        else
        {
            compteur>>=1;         // décalage d'un bit vers la droite
            if(compteur == 0x01)
                sens = 0;
        }
        set_8Dels(compteur);
    }
}