Merge pull request #221 from DavidLin1577/patch-11

Update bc35_28_95_lwm2m.c
2020-08-11 18:57:42 +08:00
parent f8b32cff62 3a218ec2a0
commit d2417a34be
1 changed files with 4 additions and 0 deletions
--- a/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.c
+++ b/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.c
@@ -158,6 +158,10 @@ static int bc35_28_95_signal_quality_check(void)
    }

    str = strstr(echo.buffer, "+CSQ:");
+    if (!str) 
+    {
+        return -1;
+    }
    sscanf(str, "+CSQ:%d,%d", &rssi, &ber);
    if (rssi == 99) {
        return -1;