小生最近用SH4作个DD,复位脚的接法,我用的是QG8原厂的DEMO把MCU拔了作为仿真器使用,但只能进入DEBUG模式一次,以后就怎么也进不去了
2:我用QG8装回去,可以把代码烧写到QG8里面,说明仿真器没有损坏
3:我看了GQ8 DEMO的原理图,看见它的RESET脚没有接任何器件,所以我也拆掉了SH4 RESET脚的5.6K 0.1uF,但仍然不能进入DEBUG
4:这个是我的初始化代码
void InitializeSystemClock(void)
{
/* SOPT1: COPT=0,STOPE=1,IICPS=0,BKGDPE=1,RSTPE=1 */
SOPT1 = (unsigned char)0x23;
/* SPMSC1: LVWF=0,LVWACK=0,LVWIE=0,LVDRE=1,LVDSE=1,LVDE=1,BGBE=0 */
SPMSC1 = 0x1C;
/* SPMSC2: LVDV=0,LVWV=0,PPDF=0,PPDACK=0,PPDC=0 */
SPMSC2 = 0x00;
ICSTRM = *(unsigned char*far)0xFFAF; /* Initialize ICSTRM register from a non volatile memory */
ICSSC = *(unsigned char*far)0xFFAE; /* Initialize ICSSC register from a non volatile memory */
/* ICSC1: CLKS=0,RDIV=0,IREFS=1,IRCLKEN=0,IREFSTEN=0 8M fbus->4M*/
ICSC1 = 0x04;//ICSC1 = 0x14; /* Initialization of the ICS control register 1 */
/* ICSC2: BDIV=01,RANGE=0,HGO=0,LP=0,EREFS=0,ERCLKEN=0,EREFSTEN=0 */
ICSC2 = 0x40;// /* Initialization of the ICS control register 2 */
while(!ICSSC_IREFST) { /* Wait until the source of reference clock is internal clock */
}
/* ### Init_COP init code */
SRS = 0xFF; /* Clear WatchDog counter */
}
//下面是端口的
/*A口初始化*/
PTADD = (unsigned char)0xFF;
PTAPE = (unsigned char)0x00;//禁止A口上拉
PTASE = (unsigned char)0x00;//不限制A口摆率
PTADS = (unsigned char)0x0F;
PTASC = (unsigned char)0x00;
PTAPS = (unsigned char)0x00;
PTAES = (unsigned char)0x00;
PTAD = (unsigned char)0x00;
/*B口初始化*/
PTBDD = (unsigned char)0x06;
PTBPE = (unsigned char)0x00;//禁止B口上拉
PTBSE = (unsigned char)0x00;//不限制B口摆率
PTBDS = (unsigned char)0x00;
PTBSC = (unsigned char)0x00;
PTBPS = (unsigned char)0x00;
PTBES = (unsigned char)0x00;
PTBD = (unsigned char)0x00;
/*C口初始化*/
PTCDD = (unsigned char)0xFB;//方向口控制
PTCPE = (unsigned char)0x00;//禁止上拉
PTCSE = (unsigned char)0x00;//不限制摆率
PTCDS = (unsigned char)0x00;//禁止强驱动
//GNGC = （unsigned char)0x00;?
PTCD = (unsigned char)0x00;
|
R5.6K
|
RESET ----
|
0.1uF
|
GND |
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