//====================================================================
// File Name : Uart1.c
// Function  : S3C2410 UART Test Program
// Program   : Shin, JS
// Date      : 
// Version   : 0.0
// History
//   0.0 : Programming start 
//         12/22/2003: SOP
//====================================================================
#include <string.h>
#include <stdlib.h>
#include "2410addr.h"
#include "2410lib.h"
#include "def.h"
#include "uart0.h"
#include "uart1.h"

void __irq Uart1_TxInt(void);
void __irq Uart1_RxIntOrErr(void);
void __irq Uart1_TxDmaDone(void);
void __irq Uart1_RxDmaDone(void);
void __irq Uart1_RxDmaOrErr(void);
void __irq Uart1_TxFifo(void);
void __irq Uart1_RxFifoOrErr(void);
void __irq Uart1_AfcTx(void);
void __irq Uart1_AfcRxOrErr(void);

void __sub_Uart1_RxInt(void);
void __sub_Uart1_RxFifo(void);
void __sub_Uart1_RxAfc(void);
void __sub_Uart1_RxErrInt(void);

volatile static char *uart1TxStr;
volatile static char *uart1RxStr;

//---------------------------------------UART1 test function-------------------------------------
void __irq Uart1_TxInt(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);	// Just for the safety
    if(*uart1TxStr != '\0')
    {
    	WrUTXH1(*uart1TxStr++);
        ClearPending(BIT_UART1);	// Clear master pending
        rSUBSRCPND=(BIT_SUB_TXD1);
        rINTSUBMSK&=~(BIT_SUB_TXD1);	// Unmask sub int
    }
    else
    {
    	isTxInt=0;
        ClearPending(BIT_UART1);	// Clear master pending
        rSUBSRCPND=(BIT_SUB_TXD1);
        rINTMSK|=(BIT_UART1);		// Unmask sub int
    }
}

void __irq Uart1_RxIntOrErr(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);
    if(rSUBSRCPND&BIT_SUB_RXD1) __sub_Uart1_RxInt();
    else __sub_Uart1_RxErrInt();

    ClearPending(BIT_UART1);
    rSUBSRCPND=(BIT_SUB_RXD1|BIT_SUB_ERR1);	// Clear Sub int pending    
    rINTSUBMSK&=~(BIT_SUB_RXD1|BIT_SUB_ERR1);    
}

void __irq Uart1_TxDmaDone(void)
{
    rDMASKTRIG1=0x0;	// Stop Dma1
    isDone=0;
    rINTMSK |= BIT_DMA1;
    ClearPending(BIT_DMA1);
}

void __irq Uart1_RxDmaDone(void)
{
    rDMASKTRIG1=0x0;	//DMA1 Channel Off
    isDone=0;
    *(uart1RxStr+5)='\0';
    rINTMSK|=(BIT_DMA1);
    ClearPending(BIT_DMA1);
}

void __irq Uart1_RxDmaOrErr(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);
    if(rSUBSRCPND&BIT_SUB_RXD1) Uart_Printf("Error : UART1 Rx Interrupt is occured!!!\n");
    else __sub_Uart1_RxErrInt();

    ClearPending(BIT_UART1);
    rSUBSRCPND=(BIT_SUB_ERR1);	// Clear Sub int pending    
    rINTSUBMSK&=~(BIT_SUB_ERR1);    
}

void __irq Uart1_TxFifo(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);	// Just for the safety
    while (!(rUFSTAT1 & 0x200) && (*uart1TxStr != '\0')) 	//until tx fifo full or end of string
    	WrUTXH1(*uart1TxStr++);	

    if(*uart1TxStr == '\0') 
    {
    	rINTMSK|=BIT_UART1;
        rSUBSRCPND=BIT_SUB_TXD1;	// Clear Sub int pending
        ClearPending(BIT_UART1);	// Clear master pending
    }
    else 
    {
        ClearPending(BIT_UART1);	// Clear master pending
        rSUBSRCPND=BIT_SUB_TXD1;	// Clear Sub int pending
        rINTSUBMSK&=~(BIT_SUB_TXD1);	// Unmask sub int
    }
}

void __irq Uart1_RxFifoOrErr(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);
    if(rSUBSRCPND&BIT_SUB_RXD1) __sub_Uart1_RxFifo();
    else __sub_Uart1_RxErrInt();
    ClearPending(BIT_UART1);
    rSUBSRCPND=(BIT_SUB_RXD1|BIT_SUB_ERR1);
    rINTSUBMSK&=~(BIT_SUB_RXD1|BIT_SUB_ERR1);
}

void __sub_Uart1_RxInt(void)
{
    if(RdURXH1()!='\r') 
    {
    	Uart_Printf("%c",RdURXH1());
        *uart1RxStr++ =(char) RdURXH1();
    }
    else
    {
    	isRxInt=0;
    	*uart1RxStr='\0';
    	Uart_Printf("\n");
    }
}

void __sub_Uart1_RxFifo(void)
{
    while((rUFSTAT1&0x100)||(rUFSTAT1&0xf))	//During the Rx FIFO is not empty
    {
	rx_point++;
	if(rx_point<5)
		 rx_filesize |= (RdURXH1()<<(8*(rx_point-1))); // First 4-bytes mean file size
	else if(rx_point>(rx_filesize-2))	
	{
		rx_dncs |= (RdURXH1()<<(8*(1-(rx_filesize-rx_point)))); //Last 2-bytes mean checksum.
		if(rx_point==rx_filesize) rx_isdone=0;
	}
	else
		rx_checksum+=RdURXH1();
    }
}

  
void __sub_Uart1_RxErrInt(void)
{
    switch(rUERSTAT1)//to clear and check the status of register bits
    {
	case '1':
	    Uart_Printf("Overrun error\n");
	    break;
	case '2':
	    Uart_Printf("Parity error\n");
	    break;
	case '4':
	    Uart_Printf("Frame error\n");
	    break;
	case '8':
	    Uart_Printf("Breake detect\n");
	    break;
	default :
	    break;
    }
}


void Test_Uart1_Int(void)
{
    Uart_Port_Set(); 
    Uart_Select(0);    
    /*********** UART1 Tx test with interrupt ***********/  
    isTxInt=1;
    uart1TxStr="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890->UART1 Tx interrupt test is good!!!!\r\n";
    Uart_Printf("[Uart channel 1 Tx Interrupt Test]\n");

    //-------------------------------------------------------------------------------------------->
    Uart_Printf("\nConnect PC[COM1 or COM2] and UART1 of SMDK2410 with a serial cable!!! \n");
    Uart_Printf("Then, press any key........\n");
    Uart_Select(1);	// Change the uart port    
    Uart_Getch();
    //----------------------------------------->

    pISR_UART1=(unsigned)Uart1_TxInt;

    rULCON1=(0<<6)|(0<<3)|(0<<2)|(3);	// Normal,No parity,One stop bit, 8bit
    rUCON1 &= 0x400;	// For the PCLK <-> UCLK fuction
    rUCON1 |= (TX_INTTYPE<<9)|(RX_INTTYPE<<8)|(0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1);
    //Clock,Tx:Def,Rx:Def,Rx timeout:x,Rx error int:x,Loop-back:x,Send break:x,Tx:int,Rx:int
    Uart_TxEmpty(0); //wait until tx buffer is empty.
    rINTMSK=~(BIT_UART1);
    rINTSUBMSK=~(BIT_SUB_TXD1);

    while(isTxInt);

    /*********** UART1 Rx test with interrupt ***********/
    isRxInt=1;
    uart1RxStr=(volatile char *)UARTBUFFER;
    Uart_Printf("\n[Uart channel 1 Rx Interrupt Test]:\n");
    Uart_Printf("After typing ENTER key, you will see the characters which was typed by you.");
    Uart_Printf("\nTo quit, press ENTER key.!!!\n");
    
    pISR_UART1 =(unsigned)Uart1_RxIntOrErr;

    rULCON1=(0<<6)|(0<<3)|(0<<2)|(3);	// Normal,No parity,One stop bit, 8bit
    rUCON1 &= 0x400;	// For the PCLK <-> UCLK fuction
    rUCON1 |= (TX_INTTYPE<<9)|(RX_INTTYPE<<8)|(0<<7)|(1<<6)|(0<<5)|(0<<4)|(1<<2)|(1);
    //Clock,Tx:pulse,Rx:pulse,Rx timeout:x,Rx error int:o,Loop-back:x,Send break:x,Tx:int,Rx:int

    // Clear Int Pending and Unmask
    ClearPending(BIT_UART1);
    rINTMSK=~(BIT_UART1);
    rSUBSRCPND=(BIT_SUB_RXD1|BIT_SUB_ERR1);
    rINTSUBMSK=~(BIT_SUB_RXD1|BIT_SUB_ERR1);
    
    while(isRxInt);

    rINTSUBMSK|=(BIT_SUB_RXD1|BIT_SUB_TXD1|BIT_SUB_ERR1);
    rINTMSK|=(BIT_UART1);

    Uart_Printf("%s\n",(char *)UARTBUFFER);


    //----------------------------------------------------------------------------------------->    
    Uart_Printf("\nConnect PC[COM1 or COM2] and UART0 of SMDK2410 with a serial cable!!! \n");
    Uart_Printf("Then, press any key........\n");
    Uart_Select(0);
    Uart_Getch();
    //--------------------------->


    Uart_Port_Return();
}

void Test_Uart1_Dma(void)
{
    Uart_Port_Set(); 
    Uart_Select(0);    
    /*********** UART1 Tx test with DMA1 ***********/ 
    isDone=1;
    uart1TxStr="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890->UART1 Tx Test by DMA1 is good!!!!\r\n";
    Uart_Printf("\n[Uart channel 1 DMA1 Tx Test]\n");
    Uart_TxEmpty(0);
    
    //-------------------------------------------------------------------------------------------->
    Uart_Printf("\nConnect PC[COM1 or COM2] and UART1 of SMDK2410 with a serial cable!!! \n");
    Uart_Printf("Then, press any key........\n");
    Uart_Select(1);	// Change the uart port    
    Uart_Getch();
    //----------------------------------------->
    
    
    pISR_DMA1  =(unsigned)Uart1_TxDmaDone;

    rULCON1=(0<<6)|(0<<3)|(0<<2)|(3);	// Normal,No parity,One stop bit, 8bit
    rUCON1 &= 0x400;	// For the PCLK <-> UCLK fuction    
    rUCON1 |= (TX_INTTYPE<<9)|(RX_INTTYPE<<8)|(0<<7)|(0<<6)|(0<<5)|(0<<4)|(3<<2)|(1);
    //Clock,Tx:Def,Rx:Def,Rx timeout:x,Rx error int:x,Loop-back:x,Send break:x,Tx:dma1,Rx:int

    /***DMA1 init***/
    rDISRC1=(U32)uart1TxStr;	// Start address
    rDISRCC1=(0<<1)|(0);		// AHB,Increment
    rDIDST1=(U32)UTXH1;			// Memory buffer Address
    rDIDSTC1=(1<<1)|(1);		// APB,Fixed
    rDCON1=(1<<31)|(0<<30)|(1<<29)|(0<<28)|(0<<27)|(1<<24)|(1<<23)|(1<<22)|(0<<20)|strlen((char*)uart1TxStr);
    //handshake, sync PCLK, TC int, single tx, single service, Uart1, H/W request,auto-reload off, Byte size Tx, Tx count value
    rINTMSK=~(BIT_DMA1);
    rDMASKTRIG1=(0<<2)|(1<<1)|(0);    //no-stop, DMA1 channel on, no-SW trigger 

    while(isDone);

    /*********** UART1 Rx test with DMA1 ***********/ 
    isDone=1;
    uart1RxStr=(char *)UARTBUFFER;
    Uart_Printf("\n[Uart channel 1 DMA1 Rx Test]\n");
    Uart_Printf("Type any five keys!!!\n");    
    Uart_Printf("Then you will see what you typed.\n");