原创 MSP430上的CH372V的初始化程序

 2007-7-27 23:07  4656 6 6 分类: MCU/ 嵌入式

今天下午才弄好CH372V的小模块初始化一下才能被计算机识别的所以赶忙写了一个初始化程序赫赫放上来大家可以修改或者继续完善

#include <msp430x14x.h>

#define CH372V_DIR  P1DIR
#define CH372V_IN  P1IN
#define CH372V_OUT  P1OUT

#define CH372V_WR  BIT0
#define CH372V_WR_DIR  P2DIR
#define CH372V_WR_OUT  P2OUT
#define CH372V_WR_LO  CH372V_WR_OUT &= ~CH372V_WR
#define CH372V_WR_HI  CH372V_WR_OUT |= CH372V_WR

#define CH372V_RD  BIT1
#define CH372V_RD_DIR  P2DIR
#define CH372V_RD_OUT  P2OUT
#define CH372V_RD_LO  CH372V_RD_OUT &= ~CH372V_RD
#define CH372V_RD_HI  CH372V_RD_OUT |= CH372V_RD

#define CH372V_A0  BIT2
#define CH372V_A0_DIR  P2DIR
#define CH372V_A0_OUT  P2OUT
#define CH372V_A0_LO  CH372V_A0_OUT &= ~CH372V_A0
#define CH372V_A0_HI  CH372V_A0_OUT |= CH372V_A0

#define CH372V_CS  BIT3
#define CH372V_CS_DIR  P2DIR
#define CH372V_CS_OUT  P2OUT
#define CH372V_CS_LO  CH372V_CS_OUT &= ~CH372V_CS
#define CH372V_CS_HI  CH372V_CS_OUT |= CH372V_CS

#define CH372V_INT  BIT5
#define CH372V_INT_DIR  P2DIR
#define CH372V_INT_IN  P2IN

// CH372V 命令定义
#define CH372V_RESET_ALL  0x05 //执行硬件复位
#define CH372V_CHECK_EXIST  0x06 //测试工作状态
#define CH372V_SET_SUB_ID  0x12 //设置VID和PID
#define CH372V_SET_USB_MODE  0x15 //设置USB工作模式
#define CH372V_GET_STATUS  0x22 //获取中断状态
#define CH372V_UNLOCK_USB  0x23 //释放USB缓冲区
#define CH372V_RD_USB_DATA  0x28 //从USB端点中断读取数据并释放缓冲区
#define CH372V_WR_USB_DATA5  0x2A //向USB端点1缓冲区写数据
#define CH372V_WR_USB_DATA7  0x2B //向USB端点2缓冲区写数据
#define CH372V_GET_IC_VER  0x01 //获取芯片和固件版本
#define CH372V_ENTER_SLEEP  0x03 //进入低功耗睡眠挂起状态
#define CH372V_CHK_SUSPEND  0x0B //检查USB总线挂起方式状态
#define CH372V_RD_USB_DATA0  0x27 //USB端点中断读取数据

// CH372V 状态定义
#define CH372V_CMD_RET_SUCCESS 0x51 //操作成功
#define CH372V_CMD_RET_ABORT 0x5F //操作失败

// CH372V 中断状态
#define CH372V_USB_INT_BUS_RESET1 0x03 //检测到USB总线复位
#define CH372V_USB_INT_BUS_RESET2 0x07 //检测到USB总线复位
#define CH372V_USB_INT_BUS_RESET3 0x0B //检测到USB总线复位
#define CH372V_USB_INT_BUS_RESET4 0x0F //检测到USB总线复位
#define CH372V_USB_INT_EP0_SETUP 0x0C //端点0的接收器接收到数据，SETUP 成功
#define CH372V_USB_INT_EP0_OUT  0x00 //检端点0的接收器接收到数据，OUT功
#define CH372V_USB_INT_EP0_IN  0x08 //端点0的发送器发送完数据，IN成功
#define CH372V_USB_INT_EP1_OUT  0x01 //辅助端点/端点1接收到数据，OUT成功
#define CH372V_USB_INT_EP1_IN  0x09 //中断端点/端点1发送完数据，IN成功
#define CH372V_USB_INT_EP2_OUT  0x02 //批量端点/端点2接收到数据，OUT成功
#define CH372V_USB_INT_EP2_IN  0x0A //批量端点/端点2发送完数据，IN成功
#define CH372V_USB_INT_USB_SUSPEND 0x05 //USB总线挂起事件（如果已CHK_SUSPEND）
#define CH372V_USB_INT_WAKE_UP  0x06 //从睡眠中被唤醒事件（如果已ENTER_SLEEP）

#define CH372V_VID 4378 //VID厂商标识码
#define CH372V_PID 5537 //PID产品识别码

#define MCLK 4000 //MSP430主时钟用于延时

void Delay10us(unsigned int dtime);
void InitOsc(void);
void CH372V_Init(void);
void CH372V_SendCMD1(unsigned char Command);
void CH372V_SetVIDPID(void);
unsigned char CH372V_SendCMD2(unsigned char Command,unsigned char Parameter);

unsigned char WatchPoint;

void main(void)
{
WDTCTL = WDTPW + WDTHOLD;
InitOsc();
CH372V_Init();
while(1);
}

void CH372V_Init(void)
{
//首先初始化端口
CH372V_DIR |= 0xFF;
CH372V_WR_HI;   //WR无效
CH372V_WR_DIR |= CH372V_WR;
CH372V_RD_HI;   //RD无效
CH372V_RD_DIR |= CH372V_RD;
CH372V_CS_HI;   //CS无效
CH372V_CS_DIR |= CH372V_CS;
CH372V_A0_HI;   //A0=1命令
CH372V_A0_DIR |= CH372V_A0;
//第一部分硬件复位
CH372V_SendCMD1(0x05);
Delay10us(4000);  //延时40ms
//第二部分设置VID和PID
CH372V_SetVIDPID();
//第三部分设置USB工作模式
WatchPoint = CH372V_SendCMD2(0x15,0x02);
_NOP();    //Add BreakPoint here
}

//发送单字节命令
void CH372V_SendCMD1(unsigned char Command)
{
CH372V_DIR = 0xFF;
CH372V_OUT = Command;  //发送数据
CH372V_A0_HI;   //A0=1命令
CH372V_CS_LO;   //CS有效
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
CH372V_CS_HI;   //CS无效
}

//设置VID和PID
void CH372V_SetVIDPID(void)
{
unsigned char itemp;

CH372V_DIR = 0xFF;
CH372V_OUT = 0x12;
CH372V_CS_LO;   //CS有效
CH372V_A0_HI;   //A0=1命令
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
_NOP();_NOP();_NOP();

itemp = (unsigned char)(CH372V_VID&0xff); //VID低字节
CH372V_OUT = 0x48;//itemp;
CH372V_A0_LO;   //A0=0数据
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
_NOP();_NOP();_NOP();

itemp = (unsigned char)((CH372V_VID>>8)&0xff); //VID高字节
CH372V_OUT = 0x43;//itemp;
CH372V_A0_LO;   //A0=0数据
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
_NOP();_NOP();_NOP();

itemp = (unsigned char)(CH372V_PID&0xff); //PID低字节
CH372V_OUT = 0x37;//itemp;
CH372V_A0_LO;   //A0=0数据
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
_NOP();_NOP();_NOP();

itemp = (unsigned char)((CH372V_PID>>8)&0xff); //PID高字节
CH372V_OUT = 0x55;//itemp;
CH372V_A0_LO;   //A0=0数据
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效
CH372V_CS_HI;   //CS无效
_NOP();_NOP();_NOP();
}

//发送带有返回的单字节命令
unsigned char CH372V_SendCMD2(unsigned char Command,unsigned char Parameter)
{
unsigned char result;

CH372V_DIR = 0xFF;
CH372V_OUT = Command;  //发送数据
CH372V_CS_LO;   //CS有效
CH372V_A0_HI;   //A0=1命令
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效

_NOP();_NOP();_NOP();

CH372V_OUT = Parameter;  //发送数据
CH372V_A0_LO;   //A0=0命令
CH372V_WR_LO;   //WR有效
_NOP();_NOP();_NOP();
CH372V_WR_HI;   //WR无效

Delay10us(2);

CH372V_DIR = 0x00;
CH372V_RD_LO;   //RD有效
_NOP();_NOP();_NOP();
result = CH372V_IN;  //读取数据
CH372V_RD_HI;   //RD无效
CH372V_CS_HI;   //CS无效
CH372V_DIR = 0xFF;
return result;
}

void Delay10us(unsigned int dtime){
unsigned int i,j;
for(j=0;j<dtime;j++){
for(i=0;i<((MCLK/500)-3);i++);
}
}

void InitOsc(void)
{ //MCLK=SMLCLK=4MHz,ACLK=32768
unsigned char i,j;   //设置系统时钟
BCSCTL1 = 0x00;    //启动XT2晶振，ACLK为XT1(32KHz)
BCSCTL2 = 0x88;    //MCLK为XT2不分频;SMCLK为XT2,4MHz
j=0;
while(1) {
  IFG1 &= ~OFIFG;   //清OSCFault标志
  for (i=0xFF;i>0;--i);  //延时等待
  if ((IFG1 & OFIFG)!=0) {
   BCSCTL1 = 0x00;  //启动XT2晶振，ACLK为XT1(32KHz)
   BCSCTL2 = 0X88;  //MCLK为XT2不分频,SMCLK为XT2不分频
   j++;   //如果检测到振荡器失效，则计数
   if (j>10)  //如果计数值超过10次，则认为是硬件问题
    ;  //OSCFault();
  }
  else {
   for (i=0xFF;i>0;--i); //等待振荡器达到足够的幅度
   IFG1 &= ~OFIFG;  //清OSCFault标志
   IE1 |= OFIE + ACCVIE; //振荡器故障，FLASH非法访问中断允许
   break;
  }
}
}