memdump: srecs need a length, and max 32 data bytes

Length + 32 data bytes max...

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/memdump/srecsend.c b/memdump/srecsend.c
index 668d16c..78f32ed 100644 (file)
--- a/memdump/srecsend.c
+++ b/memdump/srecsend.c
@@ -16,12 +16,7 @@ static void make_srec(struct serial_if *sif, char type, size_t addr,
     uint8_t csum;
 
     p = buf;
-    *p++ = 'S';
-    *p++ = type;
-    if (type == '0')
-       p += sprintf(p, "%04zX", addr);
-    else
-       p += sprintf(p, "%08zX", addr);
+    p += sprintf(p, "S%c%02X%0*zX", type, len+alen+1, alen, addr);
     
     csum = (len+alen+1) + addr + (addr >> 8) + (addr >> 16) + (addr >> 24);
     while (len) {
@@ -62,7 +57,7 @@ void send_srec(struct serial_if *sif, struct file_info *fileinfo,
        
        np = blk_buf;
        while (bytes) {
-           chunk = bytes > 64 ? 64 : bytes;
+           chunk = bytes > 32 ? 32 : bytes;
 
            make_srec(sif, '3', addr, np, chunk);