REsetting microcontroller

sam — Sat, 20 May 2006 12:28:02 GMT

When i write serial communcation programme for receving jl8(hc08)Whene it get a character microcontroller get reseting i attach serial communcation programme with it

void INIT_SCI(void)
{
SCBR_SCR = 2; // for 9600 ...........
SCBR_SCP = 0; //

SCC1 = 0x44; //Enable the SCI peripheral
SCC2 = 0x2C; //Enable the SCI receiver/Transmiter

SCDR = 'A'; //Dummy data transfer
SCC2_TE = 1; //To wakeup reciever
while(!SCS1_TC){}; //Wait for tx completion
SCC2_TE = 0;
}

void justdebug(char c)
{
SCDR = c;
SCC2_TE = 1;
while(!SCS1_TC){};
SCC2_TE = 0;

}

interrupt 13 Recieve_isr(void)
{
asm lda SCS1;

justdebug(SCDR);

}

void main(void)
{
unsigned char c=0xff;
CONFIG1 = 0x01; //COP disabled
CONFIG2 = 0x08; //LVI enabled - 2.4V
INIT_SCI();
EnableInterrupts; /* enable interrupts */
/* include your code here */
justdebug('R');

for(; {

} /* loop forever */
/* please make sure that you never leave this function */
}

Re: REsetting microcontroller

peg — Sun, 21 May 2006 10:19:17 GMT

Hi sam,

Haven't studied your code to thoroughly, but a quick scan looks OK.

Usually the fastest way to reolve this is to do a single stepped full chip simulation. The simulator may even spell out the problem for you when it occurs. Or at the least you (or maybe us?) will know where to look harder.

Regards David

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REsetting microcontroller

Re: REsetting microcontroller