INHX32 is not fully supported #5
Description
Hi,
when read_inhx() function runs it fails in checksum comparison.
e.g.:
line 2530 (35 bytes): ':0B9D20004A943366CC831D3A74E8CBF4\r\n'
byte_count = 0x0B
address = 0x9D20
record_type = 0x00 (data)
data = 0x944A @0x00004E90
data = 0x6633 @0x00004E91
data = 0x83CC @0x00004E92
data = 0x3A1D @0x00004E93
data = 0xE874 @0x00004E94
checksum = 0xCB
Error: checksum does not match. Calculated = 0xBF, Read = 0xCB
In file, checksum is supposed to be 0xF4.
In read_inhx(), checsum is computed as 0xCB.
When byte_count is odd, the for loop ignore the last char :
for(i = 0; i < byte_count/2; i++) {
nread = sscanf(&line[9+4*i], "%4hx", &data);
if (nread != 1) {
cerr << "Error: cannot read data." << endl;
return 0;
}
tmp = data;
data = (data >> 8) | (tmp << 8);
if (flags.debug) fprintf(stderr, " data = 0x%04X", data);
checksum_calculated += (data >> 8) & 0xFF;
checksum_calculated += data & 0xFF;
extended_address = ( ((uint32_t)base_address << 16) | address);
if (flags.debug)
fprintf(stderr, " @0x%08X\n", extended_address/2+i);
mem->location[extended_address/2 + i - offset/2] = data;
mem->filled[extended_address/2 + i - offset/2] = 1;
filled_locations++;
}
A part of my hex file is :
:109D1000D4B37DFAEFC5913972E4D3BD61C29F25FA
:0B9D20004A943366CC831D3A74E8CBF4
:049D2C002BD9E150FE
:109D3000F90F23D9000ED880EE54000EED5425E221
May be I can link the code to fill 16bit location. But it does'nt seem possible with MPLAB C18.
Regards,
Marco