pfrison / projet-crep

Commit d8927986803e847c9916570d9b35c99ed592c681

Authored by pfrison
1 parent 6601d4de

test ordonnanceur concluant

Showing 1 changed file with 70 additions and 20 deletions   Show diff stats
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tests/atmega2560/ordonanceur/ordonanceur.c
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@@ -84,10 +84,49 @@ asm volatile ( \ @@ -84,10 +84,49 @@ asm volatile ( \
84 "pop r0 \n\t" \ 84 "pop r0 \n\t" \
85 ); 85 );
86 86
  87 +/** Configure les ports */
  88 +void init_ports(){
  89 + //TODO DDRXs
  90 +}
  91 +
  92 +/** ----- Liaison serie ----- */
  93 +void init_serial(int speed){
  94 + UBRR0 = CPU_FREQ/(((unsigned long int)speed)<<4)-1; //Set baud rate
  95 + UCSR0B = (1<<TXEN0 | 1<<RXEN0); //Enable transmitter & receiver
  96 + UCSR0C = (1<<UCSZ01 | 1<<UCSZ00); //Set 8 bits character and 1 stop bit
  97 + UCSR0A &= ~(1 << U2X0); //Set off UART baud doubler
  98 +}
  99 +void send_serial(unsigned char c){
  100 + loop_until_bit_is_set(UCSR0A, UDRE0);
  101 + UDR0 = c;
  102 +}
  103 +unsigned char get_serial(void){
  104 + loop_until_bit_is_set(UCSR0A, RXC0);
  105 + return UDR0;
  106 +}
  107 +
  108 +/** ----- Taches ----- */
  109 +void task_print_a(void){
  110 + while(1){
  111 + send_serial('a');
  112 + _delay_ms(1000);
  113 + }
  114 +}
  115 +void task_print_b(void){
  116 + while(1){
  117 + send_serial('b');
  118 + _delay_ms(700);
  119 + }
  120 +}
  121 +
  122 +/** ----- Ordonnancement ----- */
87 struct task{ 123 struct task{
88 uint16_t sp_vise; 124 uint16_t sp_vise;
89 - uint8_t state;  
90 }; 125 };
  126 +uint8_t cpt = 0;
  127 +uint8_t premier_lancement = 0;
  128 +struct task print_a = {0x0300};
  129 +struct task print_b = {0x0500};
91 130
92 /** Démarre le timer pour l'ordonnancement */ 131 /** Démarre le timer pour l'ordonnancement */
93 void init_timer(){ 132 void init_timer(){
@@ -97,32 +136,43 @@ void init_timer(){ @@ -97,32 +136,43 @@ void init_timer(){
97 OCR1A = NB_TICK; 136 OCR1A = NB_TICK;
98 TIMSK1 |= _BV(OCIE1A); 137 TIMSK1 |= _BV(OCIE1A);
99 } 138 }
100 -  
101 -/** Configure les ports */  
102 -void init_ports(){  
103 - //TODO DDRXs  
104 -}  
105 -  
106 -/** Alumme la LED 13 pour témoigné du bon fonctionnement de la carte */  
107 -void temoin_allumage(){  
108 - DDRA = 0x01;  
109 - PORTA = 0x01;  
110 - _delay_ms(500);  
111 - PORTA = 0x00;  
112 -}  
113 -  
114 -/** Reception de l'interruption généré par le timer (changement de contexte) */ 139 +/** Changement de contexte */
115 ISR(TIMER1_COMPA_vect){ 140 ISR(TIMER1_COMPA_vect){
116 - // TODO 141 + if(premier_lancement == 0){
  142 + premier_lancement++;
  143 + sei();
  144 + SP = print_a.sp_vise;
  145 + task_print_a();
  146 + }else if(premier_lancement == 1){
  147 + SAVE_CONTEXT();
  148 + print_a.sp_vise = SP;
  149 + premier_lancement++;
  150 + sei();
  151 + SP = print_b.sp_vise;
  152 + task_print_b();
  153 + }else{
  154 + if(cpt==0){
  155 + SAVE_CONTEXT();
  156 + print_b.sp_vise = SP;
  157 + SP = print_a.sp_vise;
  158 + RESTORE_CONTEXT();
  159 + cpt++;
  160 + }else if(cpt==1){
  161 + SAVE_CONTEXT();
  162 + print_a.sp_vise = SP;
  163 + SP = print_b.sp_vise;
  164 + RESTORE_CONTEXT();
  165 + cpt = 0;
  166 + }
  167 + }
117 sei(); 168 sei();
118 } 169 }
119 170
120 int main(void){ 171 int main(void){
121 - temoin_allumage();  
122 -  
123 // Initialisation 172 // Initialisation
124 init_timer(); 173 init_timer();
125 - init_port(); 174 + init_ports();
  175 + init_serial(9600);
126 sei(); 176 sei();
127 177
128 while(1){} 178 while(1){}