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[/] [minsoc/] [trunk/] [sw/] [uart/] [uart.c] - Rev 23
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#include "../support/support.h" #include "../support/board.h" #include "../support/uart.h" #include "../support/spr_defs.h" void uart_print_str(char *); void uart_print_long(unsigned long); // Dummy or32 except vectors void buserr_except(){} void dpf_except(){} void ipf_except(){} void lpint_except(){} void align_except(){} void illegal_except(){} /*void hpint_except(){ }*/ void dtlbmiss_except(){} void itlbmiss_except(){} void range_except(){} void syscall_except(){} void res1_except(){} void trap_except(){} void res2_except(){} void uart_interrupt() { char lala; unsigned char interrupt_id; interrupt_id = REG8(UART_BASE + UART_IIR); if ( interrupt_id & UART_IIR_RDI ) { lala = uart_getc(); uart_putc(lala+1); } } void uart_print_str(char *p) { while(*p != 0) { uart_putc(*p); p++; } } void uart_print_long(unsigned long ul) { int i; char c; uart_print_str("0x"); for(i=0; i<8; i++) { c = (char) (ul>>((7-i)*4)) & 0xf; if(c >= 0x0 && c<=0x9) c += '0'; else c += 'a' - 10; uart_putc(c); } } void uart_print_short(unsigned long ul) { int i; char c; char flag=0; uart_print_str("0x"); for(i=0; i<8; i++) { c = (char) (ul>>((7-i)*4)) & 0xf; if(c >= 0x0 && c<=0x9) c += '0'; else c += 'a' - 10; if ((c != '0') || (i==7)) flag=1; if(flag) uart_putc(c); } } int main() { uart_init(); int_init(); int_add(2,&uart_interrupt); /* We can't use printf because in this simple example we don't link C library. */ uart_print_str("Hello World.\n\r"); report(0xdeaddead); or32_exit(0); }
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