UART.rar_disPIC33 UART

cregister unsigned int IE,IF,ST,IOF; interrupt void uart0(void); interrupt void uart1(void); #define UART_RESET *((int *)0x60010) #define UART_B_BASE_ADDR 0x060000 #define UART_A_BASE_ADDR 0x060008 /*for 5 dip port*/ #define RBR_B *((int *)(UART_B_BASE_ADDR+0)) #define THR_B *((int *)(UART_B_BASE_ADDR+0)) #define IER_B *((int *)(UART_B_BASE_ADDR+1)) #define IIR_B *((int *)(UART_B_BASE_ADDR+2)) #define FCR_B *((int *)(UART_B_BASE_ADDR+2)) #define LCR_B *((int *)(UART_B_BASE_ADDR+3)) #define MCR_B *((int *)(UART_B_BASE_ADDR+4)) #define LSR_B *((int *)(UART_B_BASE_ADDR+5)) #define MSR_B *((int *)(UART_B_BASE_ADDR+6)) #define SCR_B *((int *)(UART_B_BASE_ADDR+7)) #define DLL_B *((int *)(UART_B_BASE_ADDR+0)) #define DLM_B *((int *)(UART_B_BASE_ADDR+1)) #define AFR_B *((int *)(UART_B_BASE_ADDR+2)) /*for db9 port*/ #define RBR_A *((int *)(UART_A_BASE_ADDR+0)) #define THR_A *((int *)(UART_A_BASE_ADDR+0)) #define IER_A *((int *)(UART_A_BASE_ADDR+1)) #define IIR_A *((int *)(UART_A_BASE_ADDR+2)) #define FCR_A *((int *)(UART_A_BASE_ADDR+2)) #define LCR_A *((int *)(UART_A_BASE_ADDR+3)) #define MCR_A *((int *)(UART_A_BASE_ADDR+4)) #define LSR_A *((int *)(UART_A_BASE_ADDR+5)) #define MSR_A *((int *)(UART_A_BASE_ADDR+6)) #define SCR_A *((int *)(UART_A_BASE_ADDR+7)) #define DLL_A *((int *)(UART_A_BASE_ADDR+0)) #define DLM_A *((int *)(UART_A_BASE_ADDR+1)) #define AFR_A *((int *)(UART_A_BASE_ADDR+2)) #define IE_RX 1 #define LOOPBACK 0x10 #define LC_8_BITS 3 #define LC_0_STOP 0 #define LC_NONE_PARITY 0 #define LC_0_DLAB 0 #define LC_1_DLAB 8 unsigned char inp_buffer[0x100]; int flag,index; main() { int i; unsigned int *VECS=(unsigned int *)0x809fc0; IE=4; /*IE == 8 FOR A ;IE == 4 FOR B*/ IF=0; IOF = 0x66; /* UART_RESET=0; reset uart*/ *(VECS+4)=0x60000000|(unsigned int)uart0; *(VECS+3)=0x60000000|(unsigned int)uart1; /*initialization interrupt vectors*/ flag=0; index=0; /*1= receive 2 = translate*/ /* LCR_A=0x80; DLL_A=0x18; DLM_A=0; LCR_A=3; MCR_A=8; IER_A=1; FCR_A=0x0f; FCR_A=0x4f; */ LCR_B=0x80; DLL_B=0x18; DLM_B=0; LCR_B=3; MCR_B=8; IER_B=1; FCR_B=0x0f; FCR_B=0x4f; ST=0x2000; IOF = 0x22; THR_B=0x12; for(;;) { /*THR_A=0x12; for(flag=LSR_A&0x1;flag==1;); inp_buffer[index]=RBR_A; index++; if( index == 0x100 ) index =0; */ /*for(flag=LSR_B&0x40;flag==1;); THR_B=0xaa;*/ } } interrupt void uart0(void) { inp_buffer[index]=RBR_A; index++; index =index%0x100; /* THR_A=0x21; */ } interrupt void uart1(void) { inp_buffer[index]=RBR_B; index++; index =index%0x100; /* THR_B=0x55;*/ }