263 lines
6.1 KiB
C
263 lines
6.1 KiB
C
/*
|
|
* s19reader.c
|
|
*
|
|
* Created on: 17.12.2012
|
|
* Author: mfro
|
|
* The ACP Firebee project
|
|
*
|
|
* This file is part of BaS_gcc.
|
|
*
|
|
* BaS_gcc is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* BaS_gcc is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with BaS_gcc. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright 2012 M. Froeschle
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <bas_printf.h>
|
|
#include <sd_card.h>
|
|
#include <diskio.h>
|
|
#include <ff.h>
|
|
#include <s19reader.h>
|
|
|
|
typedef enum { FALSE, TRUE } bool;
|
|
typedef enum { OK, FAIL } err_t;
|
|
#define NULL (void *) 0L
|
|
|
|
#define SREC_TYPE(a) (a)[0] /* type of record */
|
|
#define SREC_COUNT(a) (a)[1] /* length of valid bytes to follow */
|
|
#define SREC_ADDR16(a) (256 * (a)[2] + (a)[3]) /* 2 byte address field */
|
|
#define SREC_ADDR32(a) (0x1000000 * a[2] + 0x10000 * a[3] + 0x100 * (a)[4] + (a)[5]) /* 4 byte address field */
|
|
#define SREC_DATA16(a) ((uint8_t *)&((a)[4]))
|
|
#define SREC_DATA32(a) ((uint8_t *)&((a)[6]))
|
|
#define SREC_CHECKSUM(a) (a)[SREC_COUNT(a) + 2 - 1]
|
|
|
|
uint8_t nibble_to_byte(uint8_t nibble)
|
|
{
|
|
if ((nibble >= '0') && (nibble <= '9'))
|
|
return nibble - '0';
|
|
else if ((nibble >= 'A' && nibble <= 'F'))
|
|
return 10 + nibble - 'A';
|
|
else if ((nibble >= 'a' && nibble <= 'f'))
|
|
return 10 + nibble - 'a';
|
|
return 0;
|
|
}
|
|
|
|
uint8_t hex_to_byte(uint8_t hex[2])
|
|
{
|
|
return 16 * (nibble_to_byte(hex[0])) + (nibble_to_byte(hex[1]));
|
|
}
|
|
|
|
uint16_t hex_to_word(uint8_t hex[4])
|
|
{
|
|
return 256 * hex_to_byte(&hex[0]) + hex_to_byte(&hex[2]);
|
|
}
|
|
|
|
uint32_t hex_to_long(uint8_t hex[8])
|
|
{
|
|
return 65536 * hex_to_word(&hex[0]) + hex_to_word(&hex[4]);
|
|
}
|
|
|
|
/*
|
|
* compute the checksum
|
|
*
|
|
* it consists of the one's complement of the byte sum of the data from the count field until the end
|
|
*/
|
|
uint8_t checksum(uint8_t arr[])
|
|
{
|
|
int i;
|
|
uint8_t checksum = SREC_COUNT(arr);
|
|
|
|
for (i = 0; i < SREC_COUNT(arr) - 1; i++)
|
|
{
|
|
checksum += arr[i + 2];
|
|
}
|
|
return ~checksum;
|
|
}
|
|
|
|
void print_record(uint8_t *arr)
|
|
{
|
|
switch (SREC_TYPE(arr))
|
|
{
|
|
case 0:
|
|
{
|
|
xprintf("type 0x%x ", SREC_TYPE(arr));
|
|
xprintf("count 0x%x ", SREC_COUNT(arr));
|
|
xprintf("addr 0x%x ", SREC_ADDR16(arr));
|
|
xprintf("module %11.11s ", SREC_DATA16(arr));
|
|
xprintf("chk 0x%x 0x%x\r\n", SREC_CHECKSUM(arr), checksum(arr));
|
|
}
|
|
break;
|
|
|
|
case 3:
|
|
case 7:
|
|
{
|
|
xprintf("type 0x%x ", SREC_TYPE(arr));
|
|
xprintf("count 0x%x ", SREC_COUNT(arr));
|
|
xprintf("addr 0x%x ", SREC_ADDR32(arr));
|
|
xprintf("data %02x,%02x,%02x,%02x,... ",
|
|
SREC_DATA32(arr)[0], SREC_DATA32(arr)[1], SREC_DATA32(arr)[3], SREC_DATA32(arr)[4]);
|
|
xprintf("chk 0x%x 0x%x\r\n", SREC_CHECKSUM(arr), checksum(arr));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
xprintf("unsupported report type %d in print_record\r\n", arr[0]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void line_to_vector(uint8_t *line, uint8_t *vector)
|
|
{
|
|
int i;
|
|
int length;
|
|
uint8_t *vp = vector;
|
|
|
|
length = hex_to_byte(line + 2);
|
|
|
|
line++;
|
|
*vp++ = nibble_to_byte(*line); /* record type. Only one single nibble */
|
|
line++;
|
|
|
|
xprintf(" ");
|
|
for (i = 0; i <= length; i++)
|
|
{
|
|
*vp++ = hex_to_byte(line);
|
|
line += 2;
|
|
}
|
|
}
|
|
|
|
err_t read_srecords(char *filename, uint32_t *start_address, uint32_t *actual_length, uint8_t *buffer, uint32_t buffer_length)
|
|
{
|
|
FRESULT fres;
|
|
FIL file;
|
|
err_t ret = OK;
|
|
|
|
if ((fres = f_open(&file, filename, FA_READ) == FR_OK))
|
|
{
|
|
uint8_t line[80];
|
|
int lineno = 0;
|
|
int data_records = 0;
|
|
bool found_block_header = FALSE;
|
|
|
|
xprintf("succesfully opened file \"%s\"\r\n", filename);
|
|
|
|
while (ret == OK && (uint8_t *) f_gets((char *) line, sizeof(line), &file) != NULL)
|
|
{
|
|
lineno++;
|
|
uint8_t vector[64];
|
|
|
|
line_to_vector(line, vector); /* vector now contains the decoded contents of line, from line[1] on */
|
|
|
|
if (line[0] == 'S')
|
|
{
|
|
print_record(vector);
|
|
if (SREC_CHECKSUM(vector) != checksum(vector))
|
|
{
|
|
xprintf("invalid checksum in line %d\r\n", lineno);
|
|
ret = FAIL;
|
|
}
|
|
|
|
switch (vector[0])
|
|
{
|
|
case 0: /* block header */
|
|
xprintf("S0 record (block header found)\r\n");
|
|
found_block_header = TRUE;
|
|
break;
|
|
|
|
case 1:
|
|
xprintf("S1 record (two byte address field) found\r\n");
|
|
break;
|
|
case 2:
|
|
xprintf("S2 record (three byte address field) found\r\n");
|
|
break;
|
|
case 3:
|
|
// xprintf("S3 record (four byte address field) found\r\n");
|
|
if (found_block_header)
|
|
{
|
|
data_records++;
|
|
}
|
|
else
|
|
{
|
|
xprintf("found a data record without a block header before. Data is probably invalid\r\n");
|
|
ret = FAIL;
|
|
}
|
|
break;
|
|
|
|
case 5:
|
|
xprintf("S5 record (record count record) found\r\n");
|
|
break;
|
|
case 7:
|
|
xprintf("S7 record (end of block) found after %d valid data blocks\r\n", data_records);
|
|
break;
|
|
case 8:
|
|
xprintf("S8 record (end of block) found\r\n");
|
|
break;
|
|
case 9:
|
|
xprintf("S9 record (end of block) found\r\n");
|
|
break;
|
|
default:
|
|
xprintf("unsupported record type (%d) found in line %d\r\n", vector[0], lineno);
|
|
ret = FAIL;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
xprintf("illegal character ('%c') found on line %d. Probably not an S-Record file\r\n", line[0], lineno);
|
|
ret = FAIL;
|
|
break;
|
|
}
|
|
}
|
|
f_close(&file);
|
|
}
|
|
else
|
|
{
|
|
xprintf("could not open file %s\r\n", filename);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void flasher_load(char *flasher_filename)
|
|
{
|
|
DRESULT res;
|
|
FRESULT fres;
|
|
FATFS fs;
|
|
err_t err;
|
|
uint32_t start_address;
|
|
uint32_t length;
|
|
uint8_t buffer[2048];
|
|
|
|
xprintf("S-record reader\r\n");
|
|
|
|
disk_initialize(0);
|
|
res = disk_status(0);
|
|
xprintf("disk status of SD card is %d\r\r\n", res);
|
|
if (res == RES_OK)
|
|
{
|
|
fres = f_mount(0, &fs);
|
|
xprintf("mount status of SD card fs is %d\r\n", fres);
|
|
if (fres == FR_OK)
|
|
{
|
|
err = read_srecords(flasher_filename, &start_address, &length, buffer, sizeof(buffer));
|
|
if (err == OK)
|
|
{
|
|
|
|
}
|
|
}
|
|
f_mount(0, NULL);
|
|
}
|
|
|
|
}
|
|
|