本帖最后由 vincentwang 于 2014-11-30 17:08 编辑
第一次接触PIC的单片机，碰到一些问题，在网上也没找到解决的方法，所以来这几请教一下各位高手，希望各位高手不吝赐教！！！
因为现有悬赏分数比较少，有多少给多少了，希望高手们不要嫌少！
芯片型号：PIC18F87K90
编译环境：MPLAB X IDE V2.20+XC8
调试工具：ICD3
时钟：外部晶振8M
碰到问题如下：
问题1.点调试的时候会弹出如下警告界面：
说因为那些配置字被设置为ENABLE所以无法继续请求的操作!
但实际我的配置字是有把那些都OFF掉，不知道为什么还会有这个警告？请高手指点一下
我实际的配置字如下：
// CONFIG1L
#pragma config RETEN = ON // VREG Sleep Enable bit (Enabled)
#pragma config INTOSCSEL = HIGH // LF-INTOSC Low-power Enable bit (LF-INTOSC in High-power mode during Sleep)
#pragma config SOSCSEL = DIG // SOSC Power Selection and mode Configuration bits (Digital (SCLKI) mode)
#pragma config XINST = OFF // Extended Instruction Set (Disabled)
// CONFIG1H
#pragma config FOSC = HS1 // Oscillator (HS oscillator (Medium power, 4 MHz - 16 MHz))
#pragma config PLLCFG = ON // PLL x4 Enable bit (Enabled)
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor (Disabled)
#pragma config IESO = OFF // Internal External Oscillator Switch Over Mode (Disabled)
// CONFIG2L
#pragma config PWRTEN = OFF // Power Up Timer (Disabled)
#pragma config BOREN = SBORDIS // Brown Out Detect (Enabled in hardware, SBOREN disabled)
#pragma config BORV = 3 // Brown-out Reset Voltage bits (1.8V)
#pragma config BORPWR = ZPBORMV // BORMV Power level (ZPBORMV instead of BORMV is selected)
// CONFIG2H
#pragma config WDTEN = OFF // Watchdog Timer (WDT disabled in hardware; SWDTEN bit disabled)
#pragma config WDTPS = 1048576 // Watchdog Postscaler (1:1048576)
// CONFIG3L
#pragma config RTCOSC = SOSCREF // RTCC Clock Select (RTCC uses SOSC)
// CONFIG3H
#pragma config CCP2MX = PORTC // CCP2 Mux (RC1)
#pragma config ECCPMX = PORTE // ECCP Mux (Enhanced CCP1/3 [P1B/P1C/P3B/P3C] muxed with RE6/RE5/RE4/RE3)
#pragma config MSSPMSK = MSK7 // MSSP address masking (7 Bit address masking mode)
#pragma config MCLRE = ON // Master Clear Enable (MCLR Enabled, RG5 Disabled)
// CONFIG4L
#pragma config STVREN = ON // Stack Overflow Reset (Enabled)
#pragma config BBSIZ = BB2K // Boot Block Size (2K word Boot Block size)
// CONFIG5L
#pragma config CP0 = OFF // Code Protect 00800-03FFF (Disabled)
#pragma config CP1 = OFF // Code Protect 04000-07FFF (Disabled)
#pragma config CP2 = OFF // Code Protect 08000-0BFFF (Disabled)
#pragma config CP3 = OFF // Code Protect 0C000-0FFFF (Disabled)
#pragma config CP4 = OFF // Code Protect 10000-13FFF (Disabled)
#pragma config CP5 = OFF // Code Protect 14000-17FFF (Disabled)
#pragma config CP6 = OFF // Code Protect 18000-1BFFF (Disabled)
#pragma config CP7 = OFF // Code Protect 1C000-1FFFF (Disabled)
// CONFIG5H
#pragma config CPB = OFF // Code Protect Boot (Disabled)
#pragma config CPD = OFF // Data EE Read Protect (Disabled)
// CONFIG6L
#pragma config WRT0 = OFF // Table Write Protect 00800-03FFF (Disabled)
#pragma config WRT1 = OFF // Table Write Protect 04000-07FFF (Disabled)
#pragma config WRT2 = OFF // Table Write Protect 08000-0BFFF (Disabled)
#pragma config WRT3 = OFF // Table Write Protect 0C000-0FFFF (Disabled)
#pragma config WRT4 = OFF // Table Write Protect 10000-13FFF (Disabled)
#pragma config WRT5 = OFF // Table Write Protect 14000-17FFF (Disabled)
#pragma config WRT6 = OFF // Table Write Protect 18000-1BFFF (Disabled)
#pragma config WRT7 = OFF // Table Write Protect 1C000-1FFFF (Disabled)
// CONFIG6H
#pragma config WRTC = OFF // Config. Write Protect (Disabled)
#pragma config WRTB = OFF // Table Write Protect Boot (Disabled)
#pragma config WRTD = OFF // Data EE Write Protect (Disabled)
// CONFIG7L
#pragma config EBRT0 = OFF // Table Read Protect 00800-03FFF (Disabled)
#pragma config EBRT1 = OFF // Table Read Protect 04000-07FFF (Disabled)
#pragma config EBRT2 = OFF // Table Read Protect 08000-0BFFF (Disabled)
#pragma config EBRT3 = OFF // Table Read Protect 0C000-0FFFF (Disabled)
#pragma config EBRT4 = OFF // Table Read Protect 10000-13FFF (Disabled)
#pragma config EBRT5 = OFF // Table Read Protect 14000-17FFF (Disabled)
#pragma config EBRT6 = OFF // Table Read Protect 18000-1BFFF (Disabled)
#pragma config EBRT7 = OFF // Table Read Protect 1C000-1FFFF (Disabled)
// CONFIG7H
#pragma config EBRTB = OFF // Table Read Protect Boot (Disabled)
问题二：ICD3是否只有一个硬件断点？？？这个实在太不方面，用惯了ST的芯片，调试很爽，只有一个断点还真不方便。
问题三：数码管显示数组为什么在MPLAB里定义成const unsigned char SegCode[17]或者static const unsigned char SegCode[17]都不能显示，定义成unsigned char SegCode[17]就可以正常显示，不知道xc8对const是怎么处理的？如果要用const，怎么用？
unsigned char SegCode[17]=
{
0x3F, // 0
0x06, // 1
0x5B, // 2
0x4F, // 3
0x66, // 4
0x6D, // 5
0x7D, // 6
0x07, // 7
0x7F, // 8
0x6F, // 9
0x76, // H
0x40, // -
0x71, // F
0x77, // A
0x38, // L
0x73, // P
0x37,//n
};
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