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* jtag3.c: Make jtag3_command() public

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* jtag3.h: (Dito.)
* jtag3_private.h: Add two new commands
* stk500v2.c: Implement the "MonCon disable" hack that
allows temporarily falling back to ISP when trying to
talk to a part that has debugWIRE enabled



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1123 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2012-12-03 21:03:06 +00:00
parent e61690b142
commit 1daf387df5
5 changed files with 61 additions and 5 deletions
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46
stk500v2.c
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@@ -1150,6 +1150,52 @@ static int stk500v2_program_enable(PROGRAMMER * pgm, AVRPART * p)
}
break;
case PGMTYPE_JTAGICE3:
if (buf[1] == STATUS_CMD_FAILED &&
(p->flags & AVRPART_HAS_DW) != 0) {
void *mycookie;
unsigned char cmd[4], *resp;
/* Try debugWIRE, and MONCON_DISABLE */
if (verbose >= 2)
fprintf(stderr,
"%s: No response in ISP mode, trying debugWIRE\n",
progname);
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
cmd[0] = PARM3_CONN_DW;
if (jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_CONNECTION, cmd, 1) < 0) {
pgm->cookie = mycookie;
break;
}
cmd[0] = SCOPE_AVR;
cmd[1] = CMD3_SIGN_ON;
cmd[2] = cmd[3] = 0;
if (jtag3_command(pgm, cmd, 4, &resp, "AVR sign-on") >= 0) {
free(resp);
cmd[1] = CMD3_START_DW_DEBUG;
if (jtag3_command(pgm, cmd, 4, &resp, "start DW debug") >= 0) {
free(resp);
cmd[1] = CMD3_MONCON_DISABLE;
if (jtag3_command(pgm, cmd, 3, &resp, "MonCon disable") >= 0)
free(resp);
fprintf(stderr,
"%s: Target prepared for ISP, signed off.\n"
"%s: Please restart %s without power-cycling the target.\n",
progname, progname, progname);
}
}
pgm->cookie = mycookie;
}
break;
default:
/* cannot report anything for other pgmtypes */
break;