agilent-dmm: Fix blocking serial write timeout.

[libsigrok.git] / src / hardware / agilent-dmm / sched.c

diff --git a/src/hardware/agilent-dmm/sched.c b/src/hardware/agilent-dmm/sched.c
index 2329c076cb176b6c4fb02640d96ad1aff5336d94..46f4ade210d00f440a4227cf7e0e9753c9247da6 100644 (file)
--- a/src/hardware/agilent-dmm/sched.c
+++ b/src/hardware/agilent-dmm/sched.c
@@ -137,11 +137,11 @@ static int agdmm_send(const struct sr_dev_inst *sdi, const char *cmd)
        sr_spew("Sending '%s'.", cmd);
        strncpy(buf, cmd, 28);
        if (!strncmp(buf, "*IDN?", 5))
-               strncat(buf, "\r\n", 32);
+               strcat(buf, "\r\n");
        else
-               strncat(buf, "\n\r\n", 32);
-       if (serial_write(serial, buf, strlen(buf)) == -1) {
-               sr_err("Failed to send: %s.", strerror(errno));
+               strcat(buf, "\n\r\n");
+       if (serial_write_blocking(serial, buf, strlen(buf), SERIAL_WRITE_TIMEOUT_MS) < (int)strlen(buf)) {
+               sr_err("Failed to send.");
                return SR_ERR;
        }