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Merge pull request #1273 from stefanrueger/stk500_value_polling 

Only send write flash cmd to STK500v2 programmers if page not empty
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Stefan Rueger 2023-01-14 14:29:59 +00:00 committed by GitHub
parent a3b7072b7d 8150930958
commit 65686c7fed
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1 changed files with 5 additions and 1 deletions
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src/stk500v2.c
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@ -2279,7 +2279,11 @@ static int stk500v2_paged_write(const PROGRAMMER *pgm, const AVRPART *p, const A
memcpy(buf+10,m->buf+addr, block_size);
result = stk500v2_command(pgm,buf,block_size+10, sizeof(buf));
// Do not send request to write empty flash pages except for bootloaders (fixes Issue #425)
unsigned char *p = m->buf+addr;
result = (pgm->prog_modes & PM_SPM) || !addrshift || *p != 0xff || memcmp(p, p+1, block_size-1)?
stk500v2_command(pgm, buf, block_size+10, sizeof buf): 0;
if (result < 0) {
pmsg_error("write command failed\n");
return -1;