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在将程序从stc8h8k64u迁移到stc32g12k128时，发现一个bug,描述如下:
板子：屠龙刀
状况：板子通过CDC与电脑通讯，不初始化定时器3时，工作正常，初始化定时器3后，CDC就出不来了。
代码如下：
#include "..\api\core_api.h"
#include "..\api\usb_uart.h"
#include "..\api\usb\stc32_stc8_usb.h"
#include "stdio.h"
sbit LED_24 = P2^4;
sbit LED_25 = P2^5;
uint debugTimer = 0;
bit B_chkTimeFreq = 0;
void procUartCmd();
void initTimer0ByTest(){
AUXR &= 0x7F;
TMOD &= 0xF0;
TL0 = 0x0;
TH0 = 0x0;
TF0 = 0;
ET0 = 1;
}
void initTimer2(void){
TM2PS = 0;
AUXR &= 0xFB;
T2L = 0x30;
T2H = 0xF8;
T2R = 1;
ET2 = 1;
}
void initTimer3(){ //初始化定时器3
TM3PS = 0;
T4T3M &= 0xf0;
T3H = 0;
T3L = 0;
ET3 = 1; //加入该行后，CDC出问题
}
void reset(){
WTST = 0;
EAXFR = 1;
CKCON = 0;
initTimer2();
P3n_pure_input(0x03); //P3.0/P3.1 ºÍ USB µÄ D-/D+¹²Óà PIN ½Å£¬ ÐèÒª½« P3.0/P3.1 ÉèÖÃΪ¸ß×èÊäÈëģʽ
usb_init(); //USB CDC ½Ó¿ÚÅäÖÃ
EA = 1;
}
void showDebuger(){
if(B_chkTimeFreq){
sendTowDats2Pc(0xb5, 3, 10);
}
}
void main(void){
LED_24 = 0;
reset();
initTimer3();
LED_25 = 0;
while(1){
if (bUsbOutReady) {
procUartCmd();
usb_OUT_done();
}
if(debugTimer==0){
debugTimer = 500;
showDebuger();
}
}
}
uint timer0_Overs = 0;
void timer2_isr() interrupt 12{
if(debugTimer>0) debugTimer--;
}
void timer0_Isr(void) interrupt 1{
timer0_Overs++;
}
ulong mathCalcAdd(int nums, int dat1, int dat2){
int i;
long res = 0;
for(i=0;i<nums;i++){
res = dat1 + dat2;
}
return res;
}
ulong mathCalcDec(int nums, int dat1, int dat2){
int i;
long res = 0;
for(i=0;i<nums;i++){
res = dat1 - dat2;
}
return res;
}
ulong mathCalcMul(int nums, int dat1, int dat2){
int i;
long res = 0;
for(i=0;i<nums;i++){
res = dat1 * dat2;
}
return res;
}
ulong mathCalcDiv(int nums, int dat1, int dat2){
int i;
long res = 0;
for(i=0;i<nums;i++){
res = dat1 / dat2;
}
return res;
}
ulong mathCalcMulFloat(int nums, int dat1, int dat2){
int i;
long res = 0;
float f0 = ((float)dat1) / 10.0;
float f1 = ((float)dat2) / 10.0;
float f2 = 0;
for(i=0;i<nums;i++){
f2 = f0 * f1;
}
res = (long)(f2*10.0);
return res;
}
ulong mathCalcDivFloat(int nums, int dat1, int dat2){
int i;
long res = 0;
float f0 = ((float)dat1) / 10.0;
float f1 = ((float)dat2) / 10.0;
float f2 = 0;
for(i=0;i<nums;i++){
f2 = f0 / f1;
}
res = (long)(f2*10.0);
return res;
}
void checkMathPrefs(){
long res = 0;
uint timer = 0;
uchar idx = 5;
uchar type = UsbOutBuffer[idx++];
int nums = (((int)UsbOutBuffer[idx++]) << 8) + UsbOutBuffer[idx++];
int dat1 = (((int)UsbOutBuffer[idx++]) << 8) + UsbOutBuffer[idx++];
int dat2 = (((int)UsbOutBuffer[idx++]) << 8) + UsbOutBuffer[idx++];
initTimer0ByTest();
timer0_Overs = 0;
TR0 = 1;
switch(type){
case 1:
res = mathCalcAdd(nums, dat1, dat2);
break;
case 2:
res = mathCalcDec(nums, dat1, dat2);
break;
case 3:
res = mathCalcMul(nums, dat1, dat2);
break;
case 4:
res = mathCalcDiv(nums, dat1, dat2);
break;
case 5:
res = mathCalcMulFloat(nums, dat1, dat2);
break;
case 6:
res = mathCalcDivFloat(nums, dat1, dat2);
break;
}
TR0 = 0;
timer = (((uint)TH0) << 8) + TL0;
createStartRs232(0xb5, 3, 12);
addUChar2RS232Buf(type);
addInt2RS232Buf(nums);
addInt2RS232Buf(dat1);
addInt2RS232Buf(dat2);
flushRS232Buffer();
createStartRs232(0xb5, 3, 11);
addUInt2RS232Buf(timer0_Overs);
addUInt2RS232Buf(timer);
addLong2RS232Buf(res);
flushRS232Buffer();
}
void procUartCmd(){
if((UsbOutBuffer[0]==0x8A)&&(UsbOutBuffer[1]==0x8B)){ //´Ó×Ô¼º¿ª·¢µÄÉÏλ»úÈí¼þ·¢À´µÄ
if(UsbOutBuffer[2]==0x1C){ //³¤¶È¶Ô
if(checkRXDatSum()){ //УÑéºÍÕýÈ·
switch(UsbOutBuffer[3]){ //¹¦ÄÜ
case 0xa1: //pwmµ÷ÊÔ
switch(UsbOutBuffer[4]){
case 0x00: //ÉÏλ»ú¶ÁÈ¡ÅäÖÃ
break;
case 0x01: //±£´æÅäÖÃ
break;
case 0x02: //debug1
break;
case 0x03: //debug2
break;
case 0x04: //debug3
break;
case 0x05: //debug4
break;
case 0x06: //debug5
break;
case 0x07: //ʱÖÓ°´Å¥
B_chkTimeFreq = ~B_chkTimeFreq;
break;
case 0x08: //»»Ïà¼Ç¼
break;
case 0x09: //¿ª¹ØADC
break;
case 0x20: //µ÷ÊÔ2 ²»´ø²ÎÊý
break;
case 0x21: //µ¥²½
break;
case 0x22: //Í£Ö¹
break;
}
break;
case 0xa2: //ÉÏλ»úдÅäÖÃÀ´
break;
case 0xa3: //µ÷ÊÔ1 ´ø²ÎÊý(int)
checkMathPrefs();
break;
}
}
}
}
}
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发表于 2024-3-26 20:08:00
发表于 2024-3-26 22:12:34
