void or1k_uart_set_read_cb(void (*cb)(char c))
{
_or1k_uart_read_cb = cb;
// Enable interrupt
REG8(IER) = 1 << IER_RDAI;
or1k_interrupt_handler_add(_or1k_board_uart_IRQ,
_or1k_uart_interrupt_handler, 0);
or1k_interrupt_enable(_or1k_board_uart_IRQ);
}
void or1k_uart_set_read_cb(void (*cb)(char c))
{
// Set callback function
_or1k_uart_read_cb = cb;
// Enable interrupt
REG8(IER) = 1 << IER_RDAI;
// Add the interrupt handler that calls the callback function
or1k_interrupt_handler_add(_or1k_board_uart_IRQ,
_or1k_uart_interrupt_handler, 0);
// Enable UART interrupt
or1k_interrupt_enable(_or1k_board_uart_IRQ);
}
int main(int arcg,char * argv[]){
int i = or1k_mfspr(17);
char * newline = "\n";
//_cust_print_int((int)newline);
*(volatile char*)0x80000000 = 'm';
*(volatile char*)0x80000000 = 'a';
*(volatile char*)0x80000000 = 'i';
*(volatile char*)0x80000000 = 'n';
*(volatile char*)0x80000000 = ' ';
*(volatile char*)0x80000000 = 'c';
*(volatile char*)0x80000000 = 'a';
*(volatile char*)0x80000000 = 'l';
*(volatile char*)0x80000000 = 'l';
*(volatile char*)0x80000000 = 'e';
*(volatile char*)0x80000000 = 'd';
*(volatile char*)0x80000000 = '\n';
for (int i = 0;i<32;i++)
global_irqhandler[i] = 0;
global_irqhandler[2] = irq2;
or1k_exception_handler_add (0x8, &interrupt_handler);
or1k_interrupt_enable(2);
/*__asm__(
".byte 0x7C,0x00,0x00,0x00"
);*/
// Timer interrupt
int or1k_timer_period = 40000;
or1k_exception_handler_add(0x5, &timer_isr); // Install handler for Timer interrupt
or1k_mtspr(10<<11, 0x00<<24 | or1k_timer_period); // Set Timer Mode Register
or1k_mtspr(17, or1k_mfspr(17) | 2 ); // Set Special Purpose Register: Enable Timer interrupt
or1k_mtspr((10<<11) + 1, 0); // reset counter register (qemu bug: automatic counter reset does not work)
for (int i = 1;i<10000; i = i * 2){
_cust_print_int(i);
_cust_print(newline);
}
//or1k_exception_handler_add (0x8, &or1k_interrupt_handler);
//or1k_interrupt_handler_add(11, &irq2);
//or1k_interrupt_enable(10);
/*
float x = 0;
for (int j = 0;j<(1<<16);j++){
for (int i = 0;i<(100);i++){
x += 0.1;
}
*((int*)0x0000A000) = (int) x;
}
*((int*)0x10000000) = 0;
*/
float p = 2 * F(1);
_cust_print("pi 1: ");
_cust_print_float(p);
_cust_print("\n");
_cust_print("pi 2: ");
_cust_print_float(pi());
_cust_print("\n");
//if (pi > 0.0)
//_cust_print("\n\n3-pi > 0\n\n\n");
//float c = 0;
//for (int i = 0;i < 10000000;i++){
// c+=0.1;
//}
//return (int)c;
return 0;
}