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changeset 56:842cff427588

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cp2102: fix Intel HEX read/write bugs
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Sep 2023 19:52:28 +0000
parents c0084bf153e5
children deba1d5c8024
files cp2102/intel_hex_in.c cp2102/intel_hex_out.c
diffstat 2 files changed, 2 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/cp2102/intel_hex_in.c	Mon Sep 11 19:45:56 2023 +0000
+++ b/cp2102/intel_hex_in.c	Mon Sep 11 19:52:28 2023 +0000
@@ -80,7 +80,7 @@
 		record_len = payload_len + 5;
 		cp = linebuf + 1;
 		csum = 0;
-		for (n = 0; n < payload_len; n++) {
+		for (n = 0; n < record_len; n++) {
 			if (!isxdigit(cp[0]) || !isxdigit(cp[1]))
 				goto inv_record;
 			record[n] = decode_hex_byte(cp);
--- a/cp2102/intel_hex_out.c	Mon Sep 11 19:45:56 2023 +0000
+++ b/cp2102/intel_hex_out.c	Mon Sep 11 19:52:28 2023 +0000
@@ -32,7 +32,7 @@
 			*dp++ = *sp++;
 		csum = 0;
 		for (bytecnt = 0; bytecnt < 20; bytecnt++)
-			csum = record[bytecnt];
+			csum += record[bytecnt];
 		csum = 0x100 - csum;
 		record[20] = csum;
 		putc(':', outf);