void c_entry(void)
{
int i = 0;
task_count = 0;
currentTask = 0;
/* VIC Configuration */
VIC_INT_SELECT = 0;
VIC_ENABLE_INT = 0x00000210; /* Enable Timer01 Interrupt and UART0 */
unsigned int user_stacks[TASK_LIMIT][STACK_SIZE];
/* Task initialization */
init_task(&task[0], user_stacks[0], &task1_func);
task_count = task_count + 1;
init_task(&task[1], user_stacks[1], &task2_func);
task_count = task_count + 1;
init_task(&task[2], user_stacks[2], &task3_func);
task_count = task_count + 1;
print_uart0("OS: Starting...\n");
print_uart0("OS: Scheduler implementation : round-robin\n");
/* Timer1 Configuration */
TIMER01_disable();
TIMER01_LOAD_VALUE = 65535;
TIMER01_enable();
activate(task[currentTask].sp);
while (i < 5) {
TIMER01_disable();
print_uart0("Kernel gets back control ! \n");
print_uart0("Kernel can do some stuff...\n");
print_uart0("Load the next task ! \n");
/* Scheduler */
currentTask = currentTask + 1;
if (currentTask >= 2)
currentTask = 0; /* We only start the first and second task */
TIMER01_LOAD_VALUE = 65535;
TIMER01_enable();
activate(task[currentTask].sp);
TIMER01_disable();
i++;
}
print_uart0("Kernel is going to activate Task #3 "
"which will call a syscall() to return back "
"to kernel mode \n");
activate(task[2].sp);
print_uart0("Kernel gets back control ! \n");
print_uart0("Now, the OS is about to shutdown.");
while (1)
/* wait */ ;
}
void c_entry() {
char timerValue[32];
int i =0;
print_uart0("Hello world!\n");
// VIC Configuration
*VIC_INT_SELECT = 0; // All interrupts are IRQ
*VIC_ENABLE_INT = 0x00000010; // Enable Timer01 Interrupt
// Timer1 Configuration
TIMER01_disable();
TIMER01_LOAD_VALUE = 65520;
TIMER01_enable();
while(1){
//~ //for(i=0; i<31;i++){
//~ timerValue[0] = '0'+ (*TIMER01_CURRENT_VALUE);
//~ print_uart0(&timerValue[0]);
//~ //}
//~ print_uart0("\r\n");
}
}
