Hello,
below is a patch which makes blazer_ser to speak a special flavor of the
protocol which
in the driver code is called 'Best'. I tested this patch thoroughly on my
device (N-Power
MEV-3000LT).
Regards,
Alexander.
>cat /usr/local/portage/sys-power/nut/files/nut-2.6.5-ACK.patch
--- a/drivers/blazer.c 2013-08-13 06:46:18.227007117 +0400
+++ b/drivers/blazer.c 2013-08-13 06:49:36.315620485 +0400
@@ -405,7 +405,7 @@
};
char buf[SMALLBUF] = "";
- int i;
+ int i,ret;
for (i = 0; instcmd[i].cmd; i++) {
@@ -417,8 +417,11 @@
/*
* If a command is invalid, it will be echoed back
+ * As an exception, Best UPS units will report "ACK" in case of
success!
+ * Also this command may fail with "NAK" in case shutdown is
not is progress
*/
- if (blazer_command(buf, buf, sizeof(buf)) > 0) {
+ if ((ret=blazer_command(buf, buf, sizeof(buf)))<0
+ || ret>0 && strncmp(buf,"ACK",sizeof "ACK"-1) &&
strncmp(buf,"NAK",sizeof "NAK"-1)) {
upslogx(LOG_ERR, "instcmd: command [%s] failed",
cmdname);
return STAT_INSTCMD_FAILED;
}
@@ -463,11 +466,9 @@
* If a command is invalid, it will be echoed back.
* As an exception, Best UPS units will report "ACK" in case of success!
*/
- if (blazer_command(buf, buf, sizeof(buf)) > 0) {
- if (strncmp(buf, "ACK", 3)) {
- upslogx(LOG_ERR, "instcmd: command [%s] failed",
cmdname);
- return STAT_INSTCMD_FAILED;
- }
+ if ((ret=blazer_command(buf, buf, sizeof(buf)))<0 || ret>0 &&
strncmp(buf, "ACK", sizeof "ACK"-1)) {
+ upslogx(LOG_ERR, "instcmd: command [%s] failed", cmdname);
+ return STAT_INSTCMD_FAILED;
}
upslogx(LOG_INFO, "instcmd: command [%s] handled", cmdname);
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