Ds-5/rvds4.0 variable initialization error

Hello everyone , I meet you again , I'm the king of the whole stack

Recently, there are always various debugging errors , Memory error general , All the global variables I stumbled across failed , in other words , After global variable declaration , Early value error of song value .

The initial value is clearly 0x12345674, In order to become 0xBA141234, There is a shift

Test code

// Memory test , Prevent memory exceptions , The main performance is that there is a problem with the initialization of global variables 
#define MEM_TEST	0x12345678
u32 MemTest = MEM_TEST;

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	_init_alloc(0x56000000, 0x60000000-8);		// Initialize the scope of the heap 

	pJpegBuff = (u8*)((u32)jpeg_buff + 16-(u32)jpeg_buff%16);
	UART0_Init(ENABLE,115200);					// Initialize serial port 0, Disable interrupt reception , Baud rate 115200
	UART1_Init(DISABLE,115200);
	TFT_LCD_Init();
	// Memory check 
	if(MemTest != MEM_TEST)
	{
		uart_printf(" Memory check error , Address :0x%08X\t0x%X!=0x%X\r\n",(u32)&MemTest, MemTest, MEM_TEST);
	}

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result :

There is also a shift imagination

Finally, through a few days of debugging , The problem is located in jpeg Above the decoded file , Just don't call jpegcode.c There will be no failure

By staring at the code , Find the problem and jpeg_tables.h, I shield several arrays that I don't need , I actually solved this problem , At first, I thought it was because of .h Array variables are defined in , I moved all to .c In the document , The problem remains , Stare out a few useless arrays , The problem is actually good . Very speechless , I don't know if there are other problems .

/*************************************************************************************************************
 *  File name :	jpeg_tables.h
 *  function :		S3C6410 jpeg Encoding table 
 *  author :		[email protected]
 *  Creation time :	2013 year 01 month 14 Japan 
 *  Last change time :2013 year 01 month 14 Japan 
 *  Specifically :		 The official code used directly 
*************************************************************************************************************/
#ifndef __JPEG_TABLES_H__
#define __JPEG_TABLES_H__



const unsigned char QTBL_Luminance[4][64]=
{
    // level 1 - high quality
    {
        8, 6, 6, 8, 12, 14, 16, 17,
        6, 6, 6, 8, 10, 13, 12, 15,
        6, 6, 7, 8, 13, 14, 18, 24,
        8, 8, 8, 14, 13, 19, 24, 35,
        12, 10, 13, 13, 20, 26, 34, 39,
        14, 13, 14, 19, 26, 34, 39, 39,
        16, 12, 18, 24, 34, 39, 39, 39,
        17, 15, 24, 35, 39, 39, 39, 39
    },

    // level 2
    {
        12, 8, 8, 12, 17, 21, 24, 23,
        8, 9, 9, 11, 15, 19, 18, 23,
        8, 9, 10, 12, 19, 20, 27, 36,
        12, 11, 12, 21, 20, 28, 36, 53,
        17, 15, 19, 20, 30, 39, 51, 59,
        21, 19, 20, 28, 39, 51, 59, 59,
        24, 18, 27, 36, 51, 59, 59, 59,
        23, 23, 36, 53, 59, 59, 59, 59
    },

    // level 3
    {
        16, 11, 11, 16, 23, 27, 31, 30,
        11, 12, 12, 15, 20, 23, 23, 30,
        11, 12, 13, 16, 23, 26, 35, 47,
        16, 15, 16, 23, 26, 37, 47, 64,
        23, 20, 23, 26, 39, 51, 64, 64,
        27, 23, 26, 37, 51, 64, 64, 64,
        31, 23, 35, 47, 64, 64, 64, 64,
        30, 30, 47, 64, 64, 64, 64, 64

    },

    // level 4 - low quality
    {
        20, 16, 25, 39, 50, 46, 62, 68,
        16, 18, 23, 38, 38, 53, 65, 68,
        25, 23, 31, 38, 53, 65, 68, 68,
        39, 38, 38, 53, 65, 68, 68, 68,
        50, 38, 53, 65, 68, 68, 68, 68,
        46, 53, 65, 68, 68, 68, 68, 68,
        62, 65, 68, 68, 68, 68, 68, 68,
        68, 68, 68, 68, 68, 68, 68, 68
    }
};

const unsigned char QTBL_Chrominance[4][64]=
{
    // level 1 - high quality
    {
        9, 8, 9, 11, 14, 17, 19, 24,
        8, 10, 9, 11, 14, 13, 17, 22,
        9, 9, 13, 14, 13, 15, 23, 26,
        11, 11, 14, 14, 15, 20, 26, 33,
        14, 14, 13, 15, 20, 24, 33, 39,
        17, 13, 15, 20, 24, 32, 39, 39,
        19, 17, 23, 26, 33, 39, 39, 39,
        24, 22, 26, 33, 39, 39, 39, 39
    },

    // level 2
    {
        13, 11, 13, 16, 20, 20, 29, 37,
        11, 14, 14, 14, 16, 20, 26, 32,
        13, 14, 15, 17, 20, 23, 35, 40,
        16, 14, 17, 21, 23, 30, 40, 50,
        20, 16, 20, 23, 30, 37, 50, 59,
        20, 20, 23, 30, 37, 48, 59, 59,
        29, 26, 35, 40, 50, 59, 59, 59,
        37, 32, 40, 50, 59, 59, 59, 59
    },


    // level 3
    {
        17, 15, 17, 21, 20, 26, 38, 48,
        15, 19, 18, 17, 20, 26, 35, 43,
        17, 18, 20, 22, 26, 30, 46, 53,
        21, 17, 22, 28, 30, 39, 53, 64,
        20, 20, 26, 30, 39, 48, 64, 64,
        26, 26, 30, 39, 48, 63, 64, 64,
        38, 35, 46, 53, 64, 64, 64, 64,
        48, 43, 53, 64, 64, 64, 64, 64


    },

    // level 4 - low quality
    {
        21, 25, 32, 38, 54, 68, 68, 68,
        25, 28, 24, 38, 54, 68, 68, 68,
        32, 24, 32, 43, 66, 68, 68, 68,
        38, 38, 43, 53, 68, 68, 68, 68,
        54, 54, 66, 68, 68, 68, 68, 68,
        68, 68, 68, 68, 68, 68, 68, 68,
        68, 68, 68, 68, 68, 68, 68, 68,
        68, 68, 68, 68, 68, 68, 68, 68

    }

};

/*
const unsigned char QTBL0[64]=
{
#if 1
    0x10, 0x0B, 0x0A, 0x10, 0x18, 0x28, 0x33, 0x3D,
    0x0C, 0x0C, 0x0E, 0x13, 0x1A, 0x3A, 0x3C, 0x37,
    0x0E, 0x0D, 0x10, 0x18, 0x28, 0x39, 0x45, 0x38,
    0x0E, 0x11, 0x16, 0x1D, 0x33, 0x57, 0x50, 0x3E,
    0x12, 0x16, 0x25, 0x38, 0x44, 0x6D, 0x67, 0x4D,
    0x18, 0x23, 0x37, 0x40, 0x51, 0x68, 0x71, 0x5C,
    0x31, 0x40, 0x4E, 0x57, 0x67, 0x79, 0x78, 0x65,
    0x48, 0x5C, 0x5F, 0x62, 0x70, 0x64, 0x67, 0x63
#else
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01
#endif
};

//Added Quantization Table
const unsigned char std_chrominance_quant_tbl_plus[64]=
{
    0x11, 0x12, 0x18, 0x2F, 0x63, 0x63, 0x63, 0x63,
    0x12, 0x15, 0x1A, 0x42, 0x63, 0x63, 0x63, 0x63,
    0x18, 0x1A, 0x38, 0x63, 0x63, 0x63, 0x63, 0x63,
    0x2F, 0x42, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
    0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
    0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
    0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
    0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
};

//Quantization Table0
unsigned char std_luminance_quant_tbl[64] =
{
    1,   1,   2,   1,   1,   2,   2,   2,
    2,   3,   2,   2,   3,   3,   6,   4,
    3,   3,   3,   3,   7,   5,   8,   4,
    6,   8,   8,  10,   9,   8,   7,  11,
    8,  10,  14,  13,  11,  10,  10,  12,
    10,   8,   8,  11,  16,  12,  12,  13,
    15,  15,  15,  15,   9,  11,  16,  17,
    15,  14,  17,  13,  14,  14,  14,   1
 };

//Quantization Table1
unsigned char std_chrominance_quant_tbl[64] =
{
    4,   4,   4,   5,   4,   5,   9,   5,
    5,   9,  15,  10,   8,  10,  15,  26,
    19,   9,   9,  19,  26,  26,  26,  26,
    13,  26,  26,  26,  26,  26,  26,  26,
    26,  26,  26,  26,  26,  26,  26,  26,
    26,  26,  26,  26,  26,  26,  26,  26,
    26,  26,  26,  26,  26,  26,  26,  26,
    26,  26,  26,  26,  26,  26,  26,  26
};*/

//Huffman Table
unsigned char HDCTBL0[16]  = {0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0};
unsigned char HDCTBLG0[12] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb};

unsigned char HACTBL0[16]= {0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d};
const unsigned char HACTBLG0[162]=
{
    0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
    0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
    0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
    0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
    0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
    0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
    0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
    0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
    0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
    0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
    0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
    0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
    0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
    0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
    0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
    0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
    0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
    0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
    0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
    0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
    0xf9, 0xfa
};
/*
//Huffman Table0
unsigned char len_dc_luminance[16] ={ 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
unsigned char val_dc_luminance[12] ={ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };

unsigned char len_ac_luminance[16] ={ 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
unsigned char val_ac_luminance[162] =
{
    0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
    0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
    0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
    0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
    0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
    0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
    0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
    0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
    0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
    0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
    0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
    0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
    0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
    0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
    0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
    0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
    0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
    0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
    0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
    0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
    0xf9, 0xfa
};

//Huffman Table1
unsigned char len_dc_chrominance[16] ={ 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
unsigned char val_dc_chrominance[12] ={ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };

unsigned char len_ac_chrominance[16] ={ 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
unsigned char val_ac_chrominance[162] =
{
    0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
    0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
    0x13, 0x22, 0x32, 0x81, 0x81, 0x08, 0x14, 0x42,
    0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52,
    0xf0, 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24,
    0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a,
    0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37,
    0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47,
    0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57,
    0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67,
    0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77,
    0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86,
    0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95,
    0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
    0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3,
    0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
    0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca,
    0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
    0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8,
    0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
    0xf8, 0xf9
};*/

#endif	//__JPEG_TABLES_H__

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Stare out some arrays that are not practical , It is generally not recommended that .h Variables defined in the file ( This is the official party code ).

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