📄 target.c
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/*********************************************************************************************************
** Function name: Timer0Init
**
** Descriptions: Initialize the Time0
**
** input parameters: None
** Returned value: None
**
** Used global variables: None
** Calling modules: None
**
** Created by: Chenmingji
** Created Date: 2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:wangbiao
** Modified date:2007/11/22
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void Timer0Init(void)
{
uint32 pclk_freq;
uint32 rld_cnts;
T0IR = 0xffffffff; /* VIC timer #0 Initialization */
pclk_freq = BSP_CPU_PclkFreq(PCLK_TIMER0); /* Get the peripheral clock frequency */
rld_cnts = pclk_freq / OS_TICKS_PER_SEC; /* Calculate the # of counts necessary for the OS ticker */
T0TCR = (1 << 1); /* Disable and reset counter 0 and the prescale counter 0 */
T0TCR = 0; /* Clear the reset bit */
T0PC = 0; /* Prescaler is set to no division */
T0MR0 = rld_cnts;
T0MCR = 3; /* Interrupt on MR0 (reset TC), stop TC */
T0CCR = 0; /* Capture is disabled. */
T0EMR = 0; /* No external match output. */
T0TCR = 1;
}
/****************************************************************************************************
*名称：RTCIni()
*功能：初始化实时时钟
*****************************************************************************************************/
void RTCIni(void)
{
//uint32 pclk_freq;
RTC_ILR =0X03;
//pclk_freq = BSP_CPU_PclkFreq(PCLK_RTC);
//RTC_PREINT = pclk_freq/32768-1; //设置基准时钟分频器
//RTC_PREFRAC = pclk_freq - (pclk_freq/32768)*32768;
RTC_YEAR = 2007; //初始化年，月，日
RTC_MONTH= 12;
RTC_DOM = 29;
RTC_HOUR=10;
RTC_MIN=0;
RTC_SEC=0;
//RTC_CIIR = 0x01; //是指秒值得增量产生一次中断?
RTC_AMR = 0XFE;
RTC_CCR = 0x11; //启动RTC
}
/*********************************************************************************************************
** Function name: VICInit
**
** Descriptions: Initialize the Interrupt Vevtor Controller
**
** input parameters: None
** Returned value: None
**
** Used global variables: None
** Calling modules: None
**
** Created by: Chenmingji
** Created Date: 2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by: wangbiao
** Modified date: 2007/09/07
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
/*****************************************************************************************
中断优先级排序: 脉冲中EINT1(1) TIME0中断(系统时钟) (0) UART0，1，2，3中断(2\3\4\5) CAN中断()
键盘中断EINT0 (8) I2C中断(9) USB中断EINT2(10) RTC中断(11) 按键唤醒中断EINT3（12）
******************************************************************************************/
void VICInit(void)
{
//在下面添加相关中断声明
extern void Timer0_Handler(void);
extern void EINT1_Handler(void);
extern void RTC_Handler(void);
VICIntEnClr = 0xffffffff;
VICIntSelect &= ~(1 << VIC_TIMER0); /* Configure the timer interrupt as an IRQ source */
VICVectAddr4 = (uint32)Timer0_Handler; /* Set the vector address */
VICIntEnable = (1 << VIC_TIMER0); /* Enable the timer interrupt source */
//在下面添加相关中断配置代码
//PULSE中断
//UART INT
//CAN INT
//键盘中断EINT1 (8)
VICIntSelect &= ~(1 << VIC_EINT1);
VICVectAddr15 = (uint32)EINT1_Handler;
INTWAKE = 1<<1; // 允许外部中断1唤醒掉电的CPU
EXTINT = 1<<1; // 清除EINT1中断标志
VICIntEnable = (1 << 15 );
//键盘中断EINT0 (8)
//VICIntSelect &= ~(1 << VIC_EINT0);
//VICVectAddr0 = (uint32)EINT0_Handler;
// VICVectCntl0 = (0x20 |(1 << 14));
// VICIntEnable = (1 << 14 );
//I2C中断
//USB INT
//RTC INT
VICIntSelect &= ~(1 << VIC_RTC); /* Configure the timer interrupt as an IRQ source */
VICVectAddr13 = (uint32)RTC_Handler; // Set the vector address
INTWAKE = 1<<15; // 允许RTC唤醒掉电的CPU */
VICIntEnable = (1 << VIC_RTC);
//EINT3 INT (按键唤醒中断)
}
/*********************************************************************************************************
** Function name: TargetInit
**
** Descriptions: Initialize the target board; it is called in a necessary place, change it as
** needed
**
** input parameters: None
** Returned value: None
**
** Used global variables: None
** Calling modules: None
**
** Created by: Chenmingji
** Created Date: 2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void TargetInit(void)
{
OS_ENTER_CRITICAL();
srand((uint32) TargetInit);
VICInit();
Timer0Init();
OS_EXIT_CRITICAL();
}
/*********************************************************************************************************
** Function name: InitialiseUART0
**
** Descriptions: Initialize the Uart0
**
** input parameters: None
** Returned value: None
**
** Used global variables: None
** Calling modules: None
**
** Created by: Chenmingji
** Created Date: 2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void InitialiseUART0(uint32 bps)
{
uint32 Fdiv;
uint32 pclk_freq;
pclk_freq = BSP_CPU_PclkFreq(PCLK_UART0); /* Get the peripheral clock frequency */
PINSEL0 = (PINSEL0 & 0xfffffff0) | 0x05; /* Select the pins for Uart 选择管脚为UART0 */
U0LCR = 0x80; /* Enable to access the frequenc regecter 允许访问分频因子寄存器 */
Fdiv = (pclk_freq / 16) / bps; /* Set the baudrate设置波特率 */
U0DLM = Fdiv / 256;
U0DLL = Fdiv % 256;
U0LCR = 0x03; /* Disable to access the frequenc regecter 禁止访问分频因子寄存器 */
/* set to 8,1,n 且设置为8,1,n */
U0IER = 0x00; /* Disable interrupt禁止中断 */
U0FCR = 0x00; /* initial FIFO 初始化FIFO */
}
/*********************************************************************************************************
** Function name: TargetResetInit
**
** Descriptions: Initialize the target
**
** input parameters: None
** Returned value: None
**
** Used global variables: None
** Calling modules: None
**
** Created by: Chenmingji
** Created Date: 2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by: wangbiao
** Modified date: 2007/11/20
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void TargetResetInit(void)
{
uint32 Fcclk;
#ifdef __DEBUG
MEMMAP = 0x3; //remap
#endif
#ifdef __OUT_CHIP
MEMMAP = 0x3; //remap
#endif
#ifdef __IN_CHIP
MEMMAP = 0x1; //remap
#endif
// PINSEL0 = (PINSEL0 & 0xFFFF0000) | 0x05 | 0x50;
/* 设置系统各部分时钟 */
/* Set system timers for each component */
//PLL INIT
PLL_Init();
Fcclk = BSP_CPU_ClkFreq ();
/* 设置存储器加速模块 */
/* Set memory accelerater module*/
MAMCR = 0; /* Disable MAM functionality */
if (Fcclk < 20000000) { /* Compare current clock frequency with MAM modes */
MAMTIM = 1; /* Set MAM fetch cycles to 1 processor clock in duration */
}
if (Fcclk < 40000000) {
MAMTIM = 2; /* Set MAM fetch cycles to 2 processor clock in duration */
}
if (Fcclk >= 40000000) {
MAMTIM = 3; /* Set MAM fetch cycles to 3 processor clock in duration */
}
MAMCR = 2; /* Enable full MAM functionality */
/* 设置串行口 */
/* initialize UART*/
InitialiseUART0(115200);
/* 设置实时时钟 */
/* initialize RTC*/
#if 0
CCR = 1;
PREINT = Fpclk / 32768 - 1;
PREFRAC = Fpclk - (Fpclk / 32768) * 32768;
YEAR = 2003;
MONTH = 6;
DOM = 2;
#endif
/*EXTINT的中断触发方式采取默认方式，如果需要修改请在下面添加EXTMODE、EXTPOLAR初始化程序*/
PINSEL4 = 0x01<<22;
EXTMODE= EXTMODE & 0x0d;
EXTPOLAR= EXTPOLAR & 0x0d;
/* initialize VIC*/
VICIntEnClr = 0xffffffff;
VICVectAddr = 0;
VICIntSelect = 0;
T0IR = 0xffffffff;
T0TCR = 0X02;
}
/*********************************************************************************************************
** 以下为一些与系统相关的库函数的实现
** 具体作用请ads的参考编译器与库函数手册
** 用户可以根据自己的要求修改
********************************************************************************************************/
/*********************************************************************************************************
** The implementations for some library functions
** For more details, please refer to the ADS compiler handbook and The library
** function manual
** User could change it as needed
********************************************************************************************************/
#include "rt_sys.h"
#include "stdio.h"
#pragma import(__use_no_semihosting_swi)
#pragma import(__use_two_region_memory)
int __rt_div0(int a)
{
a = a;
return 0;
}
int fputc(int ch,FILE *f)
{
ch = ch;
f = f;
return 0;
}
int fgetc(FILE *f)
{
f = f;
return 0;
}
int _sys_close(FILEHANDLE fh)
{
fh = fh;
return 0;
}
int _sys_write(FILEHANDLE fh, const unsigned char * buf,
unsigned len, int mode)
{
fh = fh;
buf = buf;
len =len;
mode = mode;
return 0;
}
int _sys_read(FILEHANDLE fh, unsigned char * buf,
unsigned len, int mode)
{
fh = fh;
buf = buf;
len =len;
mode = mode;
return 0;
}
void _ttywrch(int ch)
{
ch = ch;
}
int _sys_istty(FILEHANDLE fh)
{
fh = fh;
return 0;
}
int _sys_seek(FILEHANDLE fh, long pos)
{
fh = fh;
return 0;
}
int _sys_ensure(FILEHANDLE fh)
{
fh = fh;
return 0;
}
long _sys_flen(FILEHANDLE fh)
{
fh = fh;
return 0;
}
int _sys_tmpnam(char * name, int sig, unsigned maxlen)
{
name = name;
sig = sig;
maxlen = maxlen;
return 0;
}
void _sys_exit(int returncode)
{
returncode = returncode;
}
char *_sys_command_string(char * cmd, int len)
{
cmd = cmd;
len = len;
return 0;
}
/*********************************************************************************************************
** End Of File
********************************************************************************************************/
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