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tripplitesu: Fix initialization after UART power cycle when tripplite firmware is buggy #220

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tripplitesu: Fix initialization after UART power cycle when tripplite firmware is buggy #220

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7 changes: 6 additions & 1 deletion drivers/tripplitesu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -125,7 +125,7 @@
#include "serial.h"

#define DRIVER_NAME "Tripp Lite SmartOnline driver"
#define DRIVER_VERSION "0.03"
#define DRIVER_VERSION "0.04"

/* driver description structure */
upsdrv_info_t upsdrv_info = {
Expand Down Expand Up @@ -552,6 +552,11 @@ static int init_comm(void)
char response[MAX_RESPONSE_LENGTH];

ups.commands_available = 0;
//Repeat enumerate command 2x, firmware bug on some units garbles 1st response
if (do_command(POLL, AVAILABLE, "", response) <= 0){
upslogx(LOG_NOTICE, "init_comm: Initial response malformed, retrying in 300ms");
usleep(3E5);
}
if (do_command(POLL, AVAILABLE, "", response) <= 0)
return 0;
i = strlen(response);
Expand Down