调试VS生产模式不同的行为

大家好，我正在使用一个PIC24FJ256GA704项目。我正在编程的设备有一对GPIO，最重要的是，一个SPI控制的显示器。我有一个简单的图形库来在框架缓冲器上写文本，然后我定期发送给显示器。我在使用它之前遇到了一些困难，直到我意识到它在调试模式和设备模式（程序）之间显示了明显不同的行为。长话短说，当在调试模式下，一切都如预期的那样工作，而在设备模式下：中断优先级似乎不受尊重：我有一个100-timeEnter中断（在Time3上），它有时不着火，显然是由于从TimeR1（显示刷新）执行的较长的功能，DES。PITE具有较低的优先级。-显示器上的字符是乱七八糟的（随机字符串，而不是应该显示的）。我真的不能把我的头包裹起来的事实是，第二个问题（在显示器上的GABBISH字符串）可以通过添加/删除一定数量的寄存器访问来明显地解决。UPT代码。这是我的Time3中断例程：LeDyRun是一个宏定义为LabbTest.LATB8（一个用于测试目的的小LED）。取决于我在代码中的多少注释行，在程序/设备模式下，下面发生了：0行：一切都如预期的那样工作：1行：屏幕是空的，设备没有响应——2行：字符串是杂乱无章的，设备在使用后变得无响应。它有一段时间（可能在地址错误或类似的情况下结束，不能真正地说出来，因为这个BaviAV不会在调试模式下发生）。- 3行：类似的结果，从我可以看到的，代码大小在某种程度上干扰了字体，这些字体被定义为conchar数组。但是，这在调试模式中不发生，而且两者都是。MAP文件看起来很好（调试和生产。MAP文件具有相同的地址。const部分）。我意识到问题是模糊地描述的，但我不知道该怎么办。我的问题是：1。有人以前遇到过类似的问题吗？2。你认为哪些信息能更好地理解我的问题和/或解决问题？如果它可以有任何帮助，那就是我的配置位。我运行在16MHz（FoSC）的内部FRC+PLL。



      以下为原文

    Hello everyone,
I'm working on a project using a PIC24FJ256GA704.  The device I'm programming has a couple of GPIO and, most importantly, an SPI-controlled display. I have a simple graphic library to write text on a framebuffer that I then periodically send to the display.

I was having some difficulties working with it until I realized it was displaying a significantly different behaviour between Debug mode and Device mode (Program). Long story short, when in Debug mode everything works as expected, while in Device mode:
   - Interrupt priority is seemingly not respected: I have a 100us timer interrupt (on timer3) that sometimes doesn't fire, apparently due to a longer function being executed from timer1 (the display refresh), despite the latter having a lower priority.
   - The characters on the display are gibberish (random strings instead of what should be displayed).

What I really can't wrap my head around is the fact that the second problem (gibberish strings on display) can be resolved apparently by adding/removing a certain number of register accesses in interrupt code. This is my timer3 interrupt routine:


/*----------------------------------------------------------------------------*/
/*  Timer Interrupt 3 - 100 usec                                              */
/*----------------------------------------------------------------------------*/
void __attribute__((interrupt, auto_psv)) _T3Interrupt (void)      
{
    static int     triac_on_time = 0;
   
   
    if (f_pwm_on)
    {
        if (pwm_off_time > 0)
        {
            TRIAC = 0;
            pwm_off_time--;
            
            if (pwm_off_time == 0)
            {
                triac_on_time = 3;
                TRIAC = 1;
                IEC0bits.T1IE = 0;
                IEC0bits.T2IE = 0;
            }

//            LED_RUN = LED_RUN;
//            LED_RUN = LED_RUN;
//            LED_RUN = LED_RUN;

        }
        else if (triac_on_time > 0)
        {
            triac_on_time--;
            
            if (triac_on_time == 0)
            {
                TRIAC = 0;
                IEC0bits.T1IE = 1;
                IEC0bits.T2IE = 1;
            }
               
        }
    }
    else
    {
        TRIAC = 0;
        IEC0bits.T1IE = 1;
        IEC0bits.T2IE = 1;
    }

    IFS0bits.T3IF = 0;
}


LED_RUN is a macro defined as LATBbits.LATB8 (a small LED used for testing purposes). Depending on how many of the commented out lines I leave in the code, in Program/Device mode, the following happens:
   - 0 lines: everything works as expected
   - 1 line: the screen is empty and the device unresponsive
   - 2 lines: the strings are gibberish and the device becomes unresponsive after using it for a while (possibly ending up in an address error or similar, can't really tell because this beaviour does not occur in Debug mode).
   - 3 lines: similar results, ...


From what I can see it appears the code size is somehow messing with the fonts, that are defined as const char arrays. However, again, this does not occur in Debug mode, and both .map files seem fine (Debug and Production .map file have the same addresses for .const sections).

I realize the problem is vaguely described, but I don't know what to do at this point. My questions are:
   1. Did anyone stumble in a similar problem before?
   2. What information do you think would be useful to better understand my problem and/or fix it?

If it can be of any help, those are my configuration bits. I'm running at 16MHz (FOSC) with the internal FRC+PLL.


/* FSEC */
#pragma config BWRP = OFF               /* Boot Segment Write-Protect bit (Boot Segment may be written) */
#pragma config BSS = DISABLED           /* Boot Segment Code-Protect Level bits (No Protection (other than BWRP)) */
#pragma config BSEN = OFF               /* Boot Segment Control bit (No Boot Segment) */
#pragma config GWRP = OFF               /* General Segment Write-Protect bit (General Segment may be written) */
#pragma config GSS = DISABLED           /* General Segment Code-Protect Level bits (No Protection (other than GWRP)) */
#pragma config CWRP = OFF               /* Configuration Segment Write-Protect bit (Configuration Segment may be written) */
#pragma config CSS = DISABLED           /* Configuration Segment Code-Protect Level bits (No Protection (other than CWRP)) */
#pragma config AIVTDIS = OFF            /* Alternate Interrupt Vector Table bit (Disabled AIVT) */

/* FBSLIM */
#pragma config BSLIM = 0x1FFF           /* Boot Segment Flash Page Address Limit bits (Boot Segment Flash page address  limit) */

/* FSIGN */

/* FOSCSEL */
#pragma config FNOSC = FRCPLL//OSCFDIV              /* Oscillator Source Selection (Internal Fast RC (FRC)) */
#pragma config PLLMODE = 0b0001//DISABLED       /* PLL Mode Selection (No PLL used; PLLEN bit is not available) */
#pragma config IESO = OFF               /* Two-speed Oscillator Start-up Enable bit (Start up with user-selected oscillator source) */

/* FOSC */
#pragma config POSCMD = NONE              /* Primary Oscillator Mode Select bits (XT Crystal Oscillator Mode) */
#pragma config OSCIOFCN = ON           /* OSC2 Pin Function bit (OSC2 is a General Purpose IO) */
#pragma config SOSCSEL = OFF             /* Digital mode */
#pragma config PLLSS = PLL_FRC          /* PLL Secondary Selection Configuration bit (PLL is fed by the on-chip Fast RC (FRC) oscillator) */
#pragma config IOL1WAY = OFF            /* Peripheral pin select configuration bit (Allow multiple reconfigurations) */
#pragma config FCKSM = CSECMD           /* Clock Switching Mode bits (Clock switching is enabled,Fail-safe Clock Monitor is disabled) */

/* FWDT */
#pragma config WDTPS = PS32768          /* Watchdog Timer Postscaler bits (1:32,768) */
#pragma config FWPSA = PR128            /* Watchdog Timer Prescaler bit (1:128) */
#pragma config FWDTEN = OFF             /* Watchdog Timer Enable bits (WDT and SWDTEN disabled) */
#pragma config WINDIS = OFF             /* Watchdog Timer Window Enable bit (Watchdog Timer in Non-Window mode) */
#pragma config WDTWIN = WIN25           /* Watchdog Timer Window Select bits (WDT Window is 25% of WDT period) */
#pragma config WDTCMX = WDTCLK          /* WDT MUX Source Select bits (WDT clock source is determined by the WDTCLK Configuration bits) */
#pragma config WDTCLK = LPRC            /* WDT Clock Source Select bits (WDT uses LPRC) */

/* FPOR */
#pragma config BOREN = ON               /* Brown Out Enable bit (Brown Out Enable Bit) */
#pragma config LPCFG = OFF              /* Low power regulator control (No Retention Sleep) */
#pragma config DNVPEN = ENABLE          /* Downside Voltage Protection Enable bit (Downside protection enabled using ZPBOR when BOR is inactive) */

/* FICD */
#pragma config ICS = PGD2               /* ICD Communication Channel Select bits (Communicate on PGEC1 and PGED1) */
#pragma config JTAGEN = OFF             /* JTAG Enable bit (JTAG is disabled) */

/* FDEVOPT1 */
#pragma config ALTCMPI = DISABLE        /* Alternate Comparator Input Enable bit (C1INC, C2INC, and C3INC are on their standard pin locations) */
#pragma config TMPRPIN = OFF            /* Tamper Pin Enable bit (TMPRN pin function is disabled) */
#pragma config SOSCHP = ON              /* SOSC High Power Enable bit (valid only when SOSCSEL = 1 (Enable SOSC high power mode (default)) */
#pragma config ALTI2C1 = ALTI2CDIS       /* Alternate I2C pin Location (SDA1 and SCL1 on RB9 and RB8) */