Dear all,
I'm using a S9S08QD4 and developing the code with codewarrior. I have abig problem with PTA4, it's alway ON.
Following this thread (https://community.freescale.com/thread/306908) about PTA4 and PTA5. Solved with bigmac contrbution, now I'm using a BSS131 to drive my relay. But now I'm facing a "problem" with PTA4, I can program and debug the code, but when I set the BKGPE to zero and start the normal operation the PTA4 goes HIGH and stays there. this is my init code for periphericals:
void periphInit (void){
asm SEI; //disable interrupt mask
//I/O
PTASE=0x00; // No slew rate
PTADS=0x00; // no DS
PTAPE=0x00; // No pull-up
PTAD=0x00; // Sortides a 0
PTADD=0x11;
//RTI
SRTISC=0x10; //1kHz OSC intern amb time-out 1seg.
// MTIM ( Base de Temps : 1,008ms)
/* TPMSC: TOF=0,TOIE=0,CPWMS=0,CLKSB=0,CLKSA=0,PS2=0,PS1=0,PS0=0 */
TPMSC = 0x00; /* Stop and reset counter */
TPMMOD = 0x3E; /* Period value setting */
(void)(TPMSC == 0); /* Overflow int. flag clearing (first part) */
SOPT1 = 0x92; //0x92 BKG 0X90 No BKG
SOPT2 = 0x00;
SPMSC1 = 0x00;
SPMSC2 = 0x00;
/* System clock initialization */
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 */
/* Initialization of the ICS control register 1 */
/* Initialization of the ICS control register 2 */
ICSC1 = 0x06; /* ICSC1: CLKS=0,IREFSTEN=0 */
ICSC2 = 0x00; /* ICSC2: BDIV=1,LP=0 */
asm CLI; //interrupt on and return
clrWD();
}
Just after power ON the system PTA4 goes HIGH and the relays switches ON and if I force it to goes LOW it stays HIGH, and I don't see why, What I'm making wrong? Any hint?
Br.
Marc
解決済! 解決策の投稿を見る。
Well finally I found the problem. I was a tin ball under the microcontroller due to a bad PCB isolation process.
Well finally I found the problem. I was a tin ball under the microcontroller due to a bad PCB isolation process.