uart ymodem转换器源码

注:CRC校验用的是xmodem-crc，转换出的文件与IPOP的ymodem发送功能发到下位机的一致。

源码:
ymodem.c

/*
FUNCTION:
    ymodem protocal convert
    input file: any file
    output file: take ymodem head
COPYRIGHT:  TsingMicro
Author:     Solution Driven Department LuYuan  
VERSION:    1.0 
VERSION:    2.0 add support for switch between 128 and 1024 data size;
CREATE TIME:2023-9-7
*/
#include 	// printf
#include 	// exit
#include 
#include 	// open
#include "crc16.h"  
#include 

/*
ymodem protocal:
SOH --> DATA LEN=128    total package size = 133 bytes
STX --> DATA LEN=1024   total package size = 1029 bytes

start frame: 
    SOH   PKG_NR   INVERSE_NR     | ------------------- DATA 128--------------------|   CRC_HI8    CRC_LOW8
          0X00     0XFF-0         FILE_NAME+0X00 FILE_SIZE+0X00  [FILL WITH 0X00]       DATA_CRC   DATA_CRC

tail_dat_frame:
    if rest contend size < 128
        DATA field size 128
    else
        DATA field size 1024

end frame:
    SOH   PKG_NR   INVERSE_NR    | ------------------- DATA 1024--------------------|   CRC_HI8    CRC_LOW8
          0X00     0XFF-0        [FILL WITH 0X00]                                       0x00        0x00

*/

#define SOH_DAT_SIZE    128
#define STX_DAT_SIZE    1024
#define SOH_PKG_SIZE    133
#define STX_PKG_SIZE    1029
#define CRC_CODE_LEN    2
#define CRC_CODE_MASK   0xFF
#define CRC_CODE_SHIFT  8
#define FILL_CODE       0X1A

typedef enum {
    SOH=0x1,
    STX=0x2,
    EOT=0x4,
    ACK=0x6,
    NAK=0x15,
    CAN=0x18,
    CHAR_C=0x43,
} ymodem_cmd_e;

//ymodem package format
#pragma  pack(1)
typedef struct {
    unsigned char head;
    unsigned char pkg_nr;
    unsigned char invrs_code_pkg_nr;
    unsigned char data[0];
} ymodem_pkg_partial_t;

uint16_t crc_code;
unsigned char* crc_code_hi8_addr;
unsigned char* crc_code_lo8_addr;

//temp buff for read file contents
unsigned char buff_in_tmp[STX_DAT_SIZE];

void output_usage()
{
    printf("usage: \r\n     ./ymodem_convert [input_file_name] [output_file_name] [data_pkg_size:1024/128] \r\n");
    return;
}

int main(int argc, char **argv)
{
    char *input_file_name = argv[1];
    char *output_file_name = argv[2];
    char *spec_data_pkg_size_str = argv[3];

    FILE* fd_in;
    FILE* fd_out;
    int input_file_len;     
    int blk_len;            // the len of the block_1024
    int last_blk_len;       // the len of the last block
    int seek_tmp=0;
    int per_frame_size;

    if(input_file_name==NULL || output_file_name==NULL || spec_data_pkg_size_str==NULL)
    {
        printf("error: user input arguments \r\n");
        output_usage();
        exit(0);
    }

    int spec_data_pkg_size = atoi(spec_data_pkg_size_str);

    if(spec_data_pkg_size != SOH_DAT_SIZE && spec_data_pkg_size != STX_DAT_SIZE)
    {
        printf("error user input data package size. must be 1024 or 128 \r\n");
        exit(0);
    }

    printf("user input data package size:%d \r\n", spec_data_pkg_size);

    printf("add ymodem infomation into bin file \r\n");
    fd_in=fopen(input_file_name,"r");
 	if(!fd_in)
		printf("\r\nfopen fd_in err");   

	fd_out=fopen(output_file_name, "w+");
	if(!fd_out)
		printf("\r\nfopen fd_out file err");

    //calc input file length
	fseek(fd_in, 0, SEEK_END);
    input_file_len = ftell(fd_in);
    printf("input_file_len:%d \r\n", input_file_len);

    //back to origin
    fseek(fd_in, 0, SEEK_SET);
	fseek(fd_out, 0, SEEK_SET);

    int input_file_name_len = strlen(input_file_name);
    char input_file_len_string[10];
    int write_pos = 0;

    //fill the start frame
    ymodem_pkg_partial_t* start_pkg = (ymodem_pkg_partial_t *)malloc(sizeof(ymodem_pkg_partial_t)+SOH_DAT_SIZE+CRC_CODE_LEN);

    sprintf(input_file_len_string, "%d", input_file_len);
    printf("input file len string: %s \r\n", input_file_len_string);

    int file_len_string_len = strlen(input_file_len_string); 
    printf("input file size string length : %d \r\n", file_len_string_len);

    start_pkg->head = SOH;
    start_pkg->pkg_nr = 0;
    start_pkg->invrs_code_pkg_nr = 0xFF;

    /* write input file name */
    //fill input_file_name
    memcpy(start_pkg->data+write_pos, input_file_name, input_file_name_len);
    write_pos += input_file_name_len;
    //fill 0x00 
    *(start_pkg->data+write_pos) = 0x00;
    write_pos += 1;
    //fill input file length
    memcpy(start_pkg->data+write_pos, input_file_len_string, file_len_string_len);
    write_pos += file_len_string_len;
    //fill 0x00
    *(start_pkg->data+write_pos) = 0x00;
    write_pos += 1;

    // //show for check
    // for(int i = 0; i < write_pos; i++)
    // {
    //     printf("idx: %d   val: %c \r\n", i, start_pkg->data[i]);
    // }

    // //fill 0x00 with rest of 128bytes
    // for(int i = SOH_DAT_SIZE-write_pos; i
    // {
    //     *(start_pkg->data+i) = 0x00;
    // }

    //fill crc code 2bytes size
    crc_code = tsCRC16_XMODEM((void *)start_pkg->data, SOH_DAT_SIZE);
    
    *(start_pkg->data+SOH_DAT_SIZE) = (crc_code & CRC_CODE_MASK);
    *(start_pkg->data+SOH_DAT_SIZE + 1) = (crc_code >> CRC_CODE_SHIFT) & CRC_CODE_MASK;

    // printf("crc code :%d \r\n", crc_code);
    // printf("crc low:%x \r\n", *(start_pkg->data+SOH_DAT_SIZE));
    // printf("crc high:%x \r\n", *(start_pkg->data+SOH_DAT_SIZE+1));
    //show for check
    // for(int i = 0; i
    // {
    //     printf("idx: %d   val: %d \r\n", i, start_pkg->data[i]);
    // }

    blk_len = (int)(input_file_len / spec_data_pkg_size);
    last_blk_len = input_file_len % spec_data_pkg_size;
    per_frame_size = spec_data_pkg_size == SOH_DAT_SIZE ? SOH_PKG_SIZE : STX_PKG_SIZE;

    printf("input file block %d num:%d \r\n",spec_data_pkg_size, blk_len);
    printf("input file last_blk_len:%d \r\n", last_blk_len);

    fwrite((void *)start_pkg,1, SOH_PKG_SIZE,fd_out);

    for(int blk_idx=0; blk_idx<blk_len; blk_idx++)
    {
        ymodem_pkg_partial_t* pkg = (ymodem_pkg_partial_t *)malloc(sizeof(ymodem_pkg_partial_t)+
                                                                    spec_data_pkg_size+
                                                                        CRC_CODE_LEN);
        pkg->head = STX;
        pkg->pkg_nr = (blk_idx+1) % 255;                      //package number start from 1
        pkg->invrs_code_pkg_nr = 0xFF-(pkg->pkg_nr);          //inverse code of package nr

        fread((char *)pkg->data, 1, spec_data_pkg_size, fd_in);

        crc_code = tsCRC16_XMODEM((void *)pkg->data, spec_data_pkg_size);

        crc_code_lo8_addr = (unsigned char* )pkg+sizeof(ymodem_pkg_partial_t)+spec_data_pkg_size;
        crc_code_hi8_addr = (unsigned char* )pkg+sizeof(ymodem_pkg_partial_t)+spec_data_pkg_size+1;

        *crc_code_hi8_addr = crc_code & CRC_CODE_MASK;
        *crc_code_lo8_addr = (crc_code >> CRC_CODE_SHIFT) & CRC_CODE_MASK;

        // printf("crc code:%x %x \r\n", *crc_code_lo8_addr, *crc_code_hi8_addr);

        fwrite((void *)pkg, 1, per_frame_size, fd_out);

        free(pkg);
    }

    // format the last package 
    ymodem_pkg_partial_t* tail_pkg;
    int tail_pkg_size;
    int fill_size;

    if(last_blk_len < SOH_DAT_SIZE) {               // 0 ~ 128
        tail_pkg_size = SOH_PKG_SIZE;
        tail_pkg = (ymodem_pkg_partial_t *)malloc(tail_pkg_size);  
        tail_pkg->head = SOH;
        fill_size = SOH_DAT_SIZE - last_blk_len;    //invalid data length
    } else {                                // 128 ~ 1024
        tail_pkg_size = STX_PKG_SIZE;
        tail_pkg = (ymodem_pkg_partial_t *)malloc(tail_pkg_size);
        tail_pkg->head = STX;
        fill_size = STX_DAT_SIZE - last_blk_len;
    }   

    printf("tail frame fill size:%d \r\n", fill_size);

    tail_pkg->pkg_nr = ((blk_len+1) % 0xFF);
    tail_pkg->invrs_code_pkg_nr = 0xFF - tail_pkg->pkg_nr;

    fread((void *)tail_pkg->data, 1, last_blk_len, fd_in);      // file in --> tail_pkg->data 

    printf("last block len:%d \r\n", last_blk_len);
    // use 0x1A to fill the rest part of the last block
    for(int fill_offset = last_blk_len; fill_offset < tail_pkg_size; fill_offset++)
    {
        tail_pkg->data[fill_offset] = FILL_CODE;
    }
    printf("crc calc len:%d \r\n",(fill_size+last_blk_len));
    crc_code = tsCRC16_XMODEM((void *)tail_pkg->data, (fill_size+last_blk_len));

    crc_code_lo8_addr = (unsigned char *)tail_pkg+tail_pkg_size-2;
    crc_code_hi8_addr = (unsigned char *)tail_pkg+tail_pkg_size-1;

    *crc_code_hi8_addr = crc_code & CRC_CODE_MASK;
    *crc_code_lo8_addr = (crc_code >> CRC_CODE_SHIFT) & CRC_CODE_MASK;

    fwrite((void *)tail_pkg, 1, tail_pkg_size, fd_out);

    free(tail_pkg);

    //end package format
    unsigned char end_pkg[SOH_PKG_SIZE] = {SOH, 0X00, 0XFF, 0, 0,0};
    fwrite((void *)end_pkg, 1, SOH_PKG_SIZE, fd_out);

    fclose(fd_out);
    return 0;
}

crc16.c

#include "crc.h"

//CRC16-CCITT 
static const uint16_t crc_ta[256]={               /* CRC余式表 */
    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
    0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
    0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
    0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
    0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
    0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
    0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
    0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
    0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
    0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
    0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
    0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
    0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
    0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
    0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
    0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
    0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
    0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
    0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
    0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
    0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
    0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
    0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
    0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
    0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
    0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
    0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
    0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
    0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
    0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
    0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
    0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};


uint16_t tsCRC16_CCITT(void *ptr,int len)
{
	uint16_t crc = 0;
	uint8_t da;
	uint8_t * p8 = (uint8_t *)ptr;

	while(len-- > 0) 
	{
		da=(uint16_t)crc>>8;  		/* 以8位二进制数的形式暂存CRC的高8位 */
		crc<<=8;              		/* 左移8位，相当于CRC的低8位乘以  */
		crc^=crc_ta[da^*p8];   	/* 高8位和当前字节相加后再查表求CRC ，再加上以前的CRC */
		p8++;
	}
	return(crc);
}

/* CRC余式表 for xmodem*/
const unsigned int crc_table[256] = {
    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
    0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
    0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
    0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
    0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
    0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
    0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
    0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
    0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
    0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
    0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
    0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
    0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
    0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
    0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
    0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
    0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
    0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
    0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
    0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
    0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
    0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
    0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
    0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
    0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
    0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
    0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
    0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
    0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
    0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
    0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
    0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};

//查表法计算crc
uint16_t tsCRC16_XMODEM(unsigned char *ptr,int len)
{
    uint16_t crc = 0x0000;
    
    while(len--) 
    {
        crc = (crc << 8) ^ crc_table[(crc >> 8 ^ *ptr++) & 0xff];
    }
    
    return(crc);
}

源码 crc.h

#ifndef CRC16_H_
#define CRC16_H_

#ifdef __cplusplus
extern "C" {
#endif

#include 


uint16_t tsCRC16_CCITT(void *ptr, int len);
uint16_t tsCRC16_XMODEM(unsigned char *ptr,int len);
// aie_log("feat crc %x\n",tsCRC16_CCITT(rst->feature.vector , rst->feature.len * rst->nFace));


#ifdef __cplusplus
}
#endif


#endif