(__pack_upper_byte char *)在地址0x1FFFF中读取不正确

我使用的是MLAYV2017Y03Y06中的图形库，XC16V1.21。我已经定义了GFXOFixFixFixPrimeSpuleSuelEngl和GFxObjultFunthPaskdIn启用，以便字体被打包以使用程序存储器的所有24位。如果字符位图驻留在地址0x02的内存中，则一些像素数据被读取损坏。在gfxtTeTracRunDead（）中，“pPARAM-& gt；pCHIMAGE”用于从闪存读取字符位图。当使用“pPARAM-& gt；pCHIMAGE”时，从地址0x1FFFF读取的数据似乎已损坏。0x1FFFF之前和之后的数据看起来很好。它被读取为“TEMP= *（pPARAM-＆G.PCHIMAGE）++”；“GFxPrimtual.C中的逻辑行”。它是这个内存的“PCCHIMAGE”指针，它似乎被误读。程序存储器本身似乎有正确的（位图）数据，而我有VIRF。IED既有“程序存储器”窗口，也在做BuffTynTBRRD读数。相关代码片段定义……gfx.CONTFION fOntPrOpjSpuleEx使能定义GFX配置文件fOntPACKEDIN使能定义GFX配置文件IMAGEIX PACKEDIN使能IFDEF GFX配置文件fOntPrimeSpuleSee使能IFNDEF文件PIC32 MXXFIIgfFuntPaskdIn使γ定义了gfxf-fOntSythyApPrimeSuxy[Suffy]空间，定义了gfxf-fOnthSuffy.PoxUpPixByth-yEngf.Eclif定义GfxfFunth-FieldSconf[Endof]空间，定义了GFxfFunth-Stand const。
                    
                    
               
                                                                                      以下为原文

                                                                            I am using the graphics library within MLA_v2017_03_06, with XC16 v1.21. I have defined both GFX_CONFIG_FONT_PROG_SPACE_ENABLE and GFX_CONFIG_FONT_PACKED_ENABLE, so that the fonts are packed to use all 24bits of program memory.

If a character bitmap resides in memory across address 0x20000, some of the pixel data is read in corrupt. Within GFX_TextCharRender(), "pParam->pChImage" is used to read character bitmap from flash memory. When using "pParam->pChImage", it appears that the data read from address 0x1FFFF is corrupt. The data before and after 0x1FFFF seems fine.

It is read in corrupt for the 'temp = *(pParam->pChImage)++;' line of logic within gfx_primative.c. It is the 'pChImage' pointer to this memory that seems to misread.

The program memory itself appears to have the correct (bitmap) data, and I have verified with both the 'program memory' window, and also when doing builtin_tblrd reads.


relative code snippets...

#define GFX_CONFIG_FONT_PROG_SPACE_ENABLE
#define GFX_CONFIG_FONT_PACKED_ENABLE
#define GFX_CONFIG_IMAGE_PACKED_ENABLE

#ifdef GFX_CONFIG_FONT_PROG_SPACE_ENABLE
#ifndef __PIC32MX__
#ifndef GFX_CONFIG_FONT_PACKED_ENABLE
#define GFX_FONT_SPACE __prog__
#else
#define GFX_FONT_SPACE __pack_upper_byte
#endif
#else
#define GFX_FONT_SPACE const
#endif
#else
#define GFX_FONT_SPACE const
#endif

GFX_FONT_SPACE uint8_t *pChImage; // pointer to the bitmap of the character