Révision 344
Ajouté par mamorales il y a presque 4 ans
| SP4b1.c | ||
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void init_keyboard(void);
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void tpo_50ms(void) ;
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unsigned char touche = 0;
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char t;
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void main(void)
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{
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init_keyboard()
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pd10 = 0x0F;pu31=1;
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p10=0x00;
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while(1)
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{
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if ( (p10 & 0xf0)!= 0xf0 )
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p10=0x07;
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t=p10;
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if(t&0xf0!=0xf0) //test les bits de poids forts. Si le bit de poid for de t est != de f, alors t&0xF0 sera != de 0xF0
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{
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touche = p10 ;
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tpo_50ms() ;
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touche=p10;
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}
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}
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}
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p10=0x0B;
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t=p10;
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if(t&0xf0!=0xf0)
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{
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touche=p10;
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}
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p10=0x0D;
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t=p10;
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if(t&0xf0!=0xf0)
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{
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touche=p10;
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}
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p10=0x0E;
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t=p10;
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if(t&0xf0!=0xf0)
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{
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touche=p10;
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}
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}
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void init_keyboard(void)
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{
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pd10 = 0x0F;p10=0 ;pu31 = 1;
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}
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void tpo_50ms(void)
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{
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tcspr = 0x8A;
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ta0mr = 0x82;
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ta0 = 50000;
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ta0s = 1;ta0os = 1;
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ta0ic = 0x00;
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while(ir_ta0ic != 1);
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ta0s = 0;
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}
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Formats disponibles : Unified diff
avancement TP SPb1 jusqu'à la détection des différentes touches (lignes + colonnes).