void test_checksum_is_verified_when_correct(void)
{
uint8_t data[0x10] = {0x21,0x46,0x01,0x36,0x01,0x21,0x47,0x01,0x36,0x00,0x7E,0xFE,0x09,0xD2,0x19,0x01};
ihex_record_t r = {
.ihr_length = 0x10, .ihr_type = IHEX_DATA, .ihr_address = 0x0100,
.ihr_data = (ihex_rdata_t) &data, .ihr_checksum = 0x40
};
CU_ASSERT_EQUAL(ihex_check_record(&r), 0);
}
void test_checksum_is_not_verified_when_incorrect(void)
{
uint8_t data[0x10] = {0x21,0x46,0x01,0x36,0x01,0x21,0x47,0x01,0x36,0x00,0x7E,0xFE,0x09,0xD2,0x19,0x01};
ihex_record_t r = {
.ihr_length = 0x10, .ihr_type = IHEX_DATA, .ihr_address = 0x0100,
.ihr_data = (ihex_rdata_t) &data, .ihr_checksum = 0x20
};
CU_ASSERT_EQUAL(ihex_check_record(&r), 1);
}
static void test_can_read_ihex_rs_from_string(char* s)
{
ihex_recordset_t *records = ihex_rs_from_string(s);
CU_ASSERT_PTR_NOT_NULL_FATAL(records);
CU_ASSERT_EQUAL_FATAL(records->ihrs_count, 2);
CU_ASSERT_EQUAL(records->ihrs_records[0].ihr_length, 0x10);
CU_ASSERT_EQUAL(records->ihrs_records[0].ihr_data[0], 0x21);
CU_ASSERT_EQUAL(records->ihrs_records[0].ihr_type, IHEX_DATA);
CU_ASSERT_EQUAL(records->ihrs_records[0].ihr_address, 0x0100);
}
static int ihex_parse_single_record(ihex_rdata_t data, unsigned int length, ihex_record_t* record)
{
uint_t i;
// Records needs to begin with record mark (usually ":")
if (*(data) != IHEX_CHR_RECORDMARK)
{
IHEX_SET_ERROR_RETURN(IHEX_ERR_PARSE_ERROR, "Missing record mark");
}
// Record layout:
// 1 2 3 4
// 0 12 3456 78 90123456789012345678901234567890 12
// : 10 0100 00 214601360121470136007EFE09D21901 40
record->ihr_length = (ihex_rlen_t) length;
record->ihr_address = (ihex_addr_t) ihex_fromhex16(data + 3);
record->ihr_type = (ihex_rtype_t) ihex_fromhex8 (data + 7);
record->ihr_checksum = (ihex_rchks_t) ihex_fromhex8 (data + 9 + record->ihr_length * 2);
if ((record->ihr_data = (ihex_rdata_t) malloc(record->ihr_length)) == NULL)
{
IHEX_SET_ERROR_RETURN(IHEX_ERR_MALLOC_FAILED, "Could not allocate memory");
}
// Records needs to end with CRLF or LF.
if ( ( data[11 + record->ihr_length * 2] != 0x0D
|| data[12 + record->ihr_length * 2] != 0x0A)
&& (data[11 + record->ihr_length * 2] != 0x0A))
{
free(record->ihr_data);
IHEX_SET_ERROR_RETURN(IHEX_ERR_WRONG_RECORD_LENGTH, "Incorrect record length");
}
for (i = 0; i < record->ihr_length; i ++)
{
if (data[9 + i*2] == 0x0A || data[9 + i*2] == 0x0D)
{
free(record->ihr_data);
IHEX_SET_ERROR_RETURN(IHEX_ERR_WRONG_RECORD_LENGTH, "Unexpected end of line");
}
record->ihr_data[i] = ihex_fromhex8(data + 9 + i*2);
}
if (ihex_check_record(record) != 0)
{
free(record->ihr_data);
IHEX_SET_ERROR_RETURN(IHEX_ERR_INCORRECT_CHECKSUM, "Checksum validation failed");
}
return 0;
}
