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Update sim800a.c

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if (!str) 
    {
        return -1;
    }
This commit is contained in:
David Lin
2020-08-10 18:05:49 +08:00
committed by GitHub
parent ad5f75d4a3
commit 4608e2c037
1 changed files with 8 additions and 0 deletions
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8
devices/sim800a/sim800a.c
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@@ -32,6 +32,10 @@ static int sim800a_signal_quality_check(void)
} }
str = strstr(echo.buffer, "+CSQ:"); str = strstr(echo.buffer, "+CSQ:");
if (!str)
{
return -1;
}
sscanf(str, "+CSQ:%d,%d", &rssi, &ber); sscanf(str, "+CSQ:%d,%d", &rssi, &ber);
if (rssi == 99 || ber == 99) { if (rssi == 99 || ber == 99) {
return -1; return -1;
@@ -245,6 +249,10 @@ static int sim800a_parse_domain(const char *host_name, char *host_ip, size_t hos
int seg1, seg2, seg3, seg4; int seg1, seg2, seg3, seg4;
str = strstr(echo.buffer, "+CDNSGIP: 1,"); str = strstr(echo.buffer, "+CDNSGIP: 1,");
if (!str)
{
return -1;
}
str += strlen("+CDNSGIP: 1,\"") + strlen(host_name) + 3; str += strlen("+CDNSGIP: 1,\"") + strlen(host_name) + 3;
sscanf(str, "%d.%d.%d.%d", &seg1, &seg2, &seg3, &seg4); sscanf(str, "%d.%d.%d.%d", &seg1, &seg2, &seg3, &seg4);
snprintf(host_ip, host_ip_len, "%d.%d.%d.%d", seg1, seg2, seg3, seg4); snprintf(host_ip, host_ip_len, "%d.%d.%d.%d", seg1, seg2, seg3, seg4);