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Correct checksum calculation; failure to account for the value of the 

record type was causing non-zero record types to be calculated
incorrectly.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@43 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Brian S. Dean 2001-01-20 15:38:55 +00:00
parent 979d0d0254
commit 3d43a61bcc
1 changed files with 2 additions and 2 deletions
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4
fileio.c
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@ -125,7 +125,7 @@ int b2ihex ( unsigned char * inbuf, int bufsize,
n = 0; n = 0;
nextaddr = 0; nextaddr = 0;
fprintf ( outf, ":%02X%04X01", n, nextaddr ); fprintf ( outf, ":%02X%04X01", n, nextaddr );
cksum += n + ((nextaddr >> 8) & 0x0ff) + (nextaddr & 0x0ff); cksum += n + ((nextaddr >> 8) & 0x0ff) + (nextaddr & 0x0ff) + 1;
cksum = -cksum; cksum = -cksum;
fprintf ( outf, "%02X\n", cksum ); fprintf ( outf, "%02X\n", cksum );
@ -175,7 +175,7 @@ int ihex2b ( char * infile, FILE * inf,
} }
/* start computing a checksum */ /* start computing a checksum */
cksum = n + ((nextaddr >> 8 ) & 0x0ff) + (nextaddr & 0x0ff); cksum = n + ((nextaddr >> 8 ) & 0x0ff) + (nextaddr & 0x0ff) + rectype;
for (i=0; i<n; i++) { for (i=0; i<n; i++) {
if (sscanf((char *)&buffer[i*2+9], "%02x", &b) != 1) { if (sscanf((char *)&buffer[i*2+9], "%02x", &b) != 1) {