?? mcbsp.c
字號:
/*********************************************************************************
* MCPSB.C v1.00 測試MCBSP同步串口測試的主程序 *
* 版權(c) 2003- 北京合眾達電子技術有限責任公司 *
* 設計者： 段立鋒 *
**********************************************************************************/
#include "type.h"
#include "uart.h"
#include "sysreg.h"
#include "mcbsp54.h"
#include "comm.h"
#define mcbsp1 1
/*幀長度的設定*/
#define FRAMLONGTH 0x104
#define DataLongth 0x100
typedef struct _UartForDec5416{
unsigned int Length;
unsigned int Type;
unsigned int Mutul;
unsigned int Data[DataLongth];
unsigned int Check;
}UartForDec5416, *PuartForDec5416;
HANDLE uart_a =0;
unsigned int audiodata =0;
PuartForDec5416 precieve =0;
unsigned int i= 0;
unsigned int k= 0;
int uart_s=0,uart_err=0,fifostatus=0;
PuartForDec5416 psend=0;
PAdConfig padset = 0;
unsigned int datasendlong = 0;
unsigned int errorsend = 0;
unsigned int uart[0x104] ={0};
unsigned int uarts[0x104] = {0};
char s_uart_r[20],s_uart_t[20];
unsigned int uartcount = 0;
main()
{
/*設置系統時鐘*/
sys_clk(CLK160);
/*初始化DEC5416板卡*/
dec5416_init();
for(i= 0; i<0x104;i++)
{
uart[i] = 0x5555;
uarts[i] = 0x5555;
}
/*同步串口選擇*/
sys_set(0x10);
/*同步串口初始化*/
/****************************************************************/
/* Place port in reset - setting XRST & RRST to 0 */
/****************************************************************/
/*進行發送復位*/
MCBSP_SUBREG_BITWRITE(mcbsp1, SPCR1_SUBADDR, RRST, RRST_SZ, 0);
/*進行接收復位*/
MCBSP_SUBREG_BITWRITE(mcbsp1, SPCR2_SUBADDR, XRST, XRST_SZ, 0);
/****************************************************************/
/* Set values of all control registers */
/****************************************************************/
/*設置SPCR1寄存器,禁止SPI模式*/
MCBSP_SUBREG_WRITE(mcbsp1, SPCR1_SUBADDR, 0);
/*設置XCR1寄存器，單數據相，發送數據長度為16位,每相1個數據*/
MCBSP_SUBREG_WRITE(mcbsp1, XCR1_SUBADDR, 0x40);
/*設置XCR2寄存器，發送數據延時一個位*/
MCBSP_SUBREG_WRITE(mcbsp1, XCR2_SUBADDR, 0x1);
/*設置RCR1寄存器，單數據相，接受數據長度為16位,每相1個數據*/
MCBSP_SUBREG_WRITE(mcbsp1, RCR1_SUBADDR, 0x040);
/*設置RCR2寄存器，單數據相,接收延時一個位*/
MCBSP_SUBREG_WRITE(mcbsp1, RCR2_SUBADDR, 0x01);
/*設置PCR寄存器，設置BLCKR為輸入，下降沿接收數據
設置BFSR為輸入，并且其極性為高有效
設置BCLKX由內部時鐘產生，并且上沿發送數據*/
MCBSP_SUBREG_WRITE(mcbsp1, PCR_SUBADDR, 0xA00);
/*使能波特率寄存器*/
MCBSP_SUBREG_BITWRITE(mcbsp1, SPCR2_SUBADDR, GRST, GRST_SZ, 1);
/*等待兩個CLKG時鐘周期*/
asm(" nop ");
asm(" nop ");
/*設置SRGR1，確定分頻數為0x0FF，MCBSP2的波待率為625k
，幀脈沖寬度為1個數據位，0x0FF*/
MCBSP_SUBREG_WRITE(mcbsp1, SRGR1_SUBADDR, 0xFFFF);
/*設置SRGR2，確定時鐘來源為內部的CPU
，確定幀同步為低有效。*/
MCBSP_SUBREG_WRITE(mcbsp1, SRGR2_SUBADDR, 0x2000);
/*使能MCBSP2發送與接收*/
MCBSP_SUBREG_BITWRITE(mcbsp1, SPCR1_SUBADDR, RRST, RRST_SZ, 1);
MCBSP_SUBREG_BITWRITE(mcbsp1, SPCR2_SUBADDR, XRST, XRST_SZ, 1);
/*等待兩個CLKG時鐘周期*/
asm(" nop ");
asm(" nop ");
/**********************************************************************/
/* 同步串口初始化結束 */
/**********************************************************************/
/*獲取有效的串口句柄*/
uart_a = uart_open(UART_A);
/*初始化串口*/
uart_setup(uart_a, /*串口A*/
buad_19k2, /*串口的波特率設置*/
data_w8, /*數據長度為8*/
data_s1, /*數據停止位為1*/
//uart_parity, /*設置奇較驗位*/
0,
(fifo_enable+fifo_txdip16+fifo_rxdip16),/*FIFO設置*/
0); /*設置自閉環方式*/
/*串口A中斷設置*/
uart_interrupt_control( uart_a, uartint_rhr, uart_enable);
/*設置接收長度*/
uart_reclong_set(uart_a,FRAMLONGTH);
/*打開系統的串口中斷*/
sysint_enable(0x2);
/*配置系統存儲器*/
memory_set(0x80);
/*實驗主控程序*/
psend = (PuartForDec5416)(&uarts[0]);
/*通知主機，系統準備好*/
psend->Length = FRAMLONGTH;
psend->Type = UARTCOMMAND;
psend->Data[0] = INITOVER;
psend->Mutul = UARTCONT;
uart_send(uart_a,FRAMLONGTH, (unsigned int *)psend);
for(;;)
{
uart_recive(uart_a,&uart[0]);
/*判斷串口的狀態*/
uart_s =uart_status(uart_a);
if( uart_s == 2)
{
/*讀RHR清 RHR interrupt*/
uart_read_reg(uart_a,rhr);
/*復位FIFO指針*/
fifostatus = uart_read_reg(uart_a,fcr);
uart_write_reg(uart_a,fcr,fifo_rreset);
uart_write_reg(uart_a,fcr,fifostatus);
continue;
}
/*串口出錯*/
if(uart_s == ERROR)
{
/*讀狀態寄存器*/
uart_err = uart_read_reg(uart_a,lsr);
/*復位FIFO指針*/
fifostatus = uart_read_reg(uart_a,fcr);
uart_write_reg(uart_a,fcr,fifo_rreset);
uart_write_reg(uart_a,fcr,fifostatus);
/*通知主機程序通訊出錯,準備重發*/
psend->Length = FRAMLONGTH;
psend->Type = UARTCOMMAND;
psend->Data[0] = RECIEVEERROR;
psend->Mutul = UARTCONT;
uart_send(uart_a,FRAMLONGTH, (unsigned int *)psend);
continue;
}
/*數據較驗出錯*/
if(uart_s == 3)
{
/*復位FIFO指針*/
fifostatus = uart_read_reg(uart_a,fcr);
uart_write_reg(uart_a,fcr,fifo_rreset);
uart_write_reg(uart_a,fcr,fifostatus);
/*通知主機程序通訊出錯,準備重發*/
psend->Length = FRAMLONGTH;
psend->Type = UARTCOMMAND;
psend->Data[0] = RECIEVEERROR;
psend->Mutul = UARTCONT;
uart_send(uart_a,FRAMLONGTH, (unsigned int *)psend);
continue;
}
/*數據未準備好*/
if(uart_s == 0)
{
precieve = (PuartForDec5416)(&uart[0]);
/*不是命令幀*/
if(precieve->Type != UARTCOMMAND)
{
/*無效命令*/
psend->Length = FRAMLONGTH;
psend->Type = UARTCOMMAND;
psend->Data[0] = COMMANDNODO;
psend->Mutul = UARTCONT;
uart_send(uart_a,FRAMLONGTH, (unsigned int *)psend);
precieve->Data[0] = 0;
}
continue;
}
/*接收從主機的數據*/
precieve = (PuartForDec5416)(&uart[0]);
switch(precieve->Data[0])
{
/*打開同步串口*/
case MCBSPOPEN:
/* Wait for sample from handset */
/* while (!MCBSP_RRDY(mcbsp1)) {};*/
if(MCBSP_RRDY(mcbsp1))
{
/* Read sample from and write back to handset codec */
s_uart_r[uartcount] = *(volatile u16*)DRR1_ADDR(mcbsp1);
*(volatile u16*)DXR1_ADDR(mcbsp1) = s_uart_r[uartcount];
s_uart_t[uartcount] = s_uart_r[uartcount];
uartcount = uartcount+1;
if(uartcount == 20)
{
uartcount= 0;
}
}
/* if(MCBSP_XRDY(mcbsp1))
{
*(volatile u16*)DXR1_ADDR(mcbsp1) = s_uart_t[i];
k = k+1;
if(i == 20)
{
k= 0;
}
}*/
break;
case MCBSPCLOSE:
precieve->Data[0] = 0;
break;
/*系統復位*/
case SYSRESET:
sys_set(0x4);
precieve->Data[0] = 0;
break;
default:
break;
}
}
}
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