Hello, my EVK-ODIN-W2 (Mbed OS v5.13.2) hardfaults when it tries to connect to an enterprise WiFi network using PEAP. I can confirm that I could connect an iPhone to the network with the provided credentials and PEAP user/password, so I don’t think this is an issue with the network itself. This is the error log that appears after calling wifi->connect() in my code:
++ MbedOS Fault Handler ++
FaultType: HardFault
Context:
– MbedOS Fault Handler –
++ MbedOS Error Info ++mbedos-error
= System will be rebooted due to a fatal error =
I tried searching for details on error 0x80FF013D but found nothing. What could be causing the fatal crash?
sayhuthut
August 27, 2019, 3:18am
2
Hi Manuel,
Are you using our provided wifi example ? It looks like some configuration not set correctly. If you can share you code snippet and mbed_app.json, it would be helpful for addressing the issue.
Also you can refer to the PR 10454 , there are some release notes for using PEAP.
Let me know if you have further questions.
Regards,
Hi Desmond,
Thanks for reaching out. My code is a slightly modified version of “mbed-os-example-wifi”.
Here is my main.cpp
#include "mbed.h"
#include "OdinWiFiInterface.h"
OdinWiFiInterface *wifi;
static auth_cert_s certificates;
int main()
{
printf("WiFi example\n");
wifi = new OdinWiFiInterface();
if (!wifi) {
printf("ERROR: No WiFiInterface found.\n");
return -1;
}
printf("\nConnecting to network\n");
// network has no password
int ret = wifi->connect(SSID, NULL, NSAPI_SECURITY_PEAP, &certificates, PEAP_USER, PEAP_PASSWORD, 0);
if (ret != 0) {
printf("\nConnection error: %d\n", ret);
return -1;
}
printf("Success\n\n");
printf("MAC: %s\n", wifi->get_mac_address());
printf("IP: %s\n", wifi->get_ip_address());
printf("Netmask: %s\n", wifi->get_netmask());
printf("Gateway: %s\n", wifi->get_gateway());
printf("RSSI: %d\n\n", wifi->get_rssi());
printf("\nDone\n");
}
This is my mbed_app.json file:
{
"config": {
"wifi-ssid": {
"help": "WiFi SSID",
"value": "\"SSID\""
},
"wifi-password": {
"help": "WiFi Password",
"value": "\"PASSWORD\""
}
},
"target_overrides": {
"*": {
"platform.stdio-convert-newlines": true
}
}
}
I did take a look at PR 10454 and as far as I can tell I followed all instructions but for some reason the ODIN always crashes. However, the same code will work fine if I try to connect to a WPA2 Personal network, it only fails if I try to connect to an Enterprise network.
Thanks a lot for your help, I really appreciate it.
Regards,
hmxmghl
October 21, 2019, 7:29am
4
Hi,
PEAP username and password is not defined in your mbed_app. You need to add following in your mbed_app.json , ofcourse replacing the values in each variable as per your own details:
{
"config":
"wifi-ssid_8021x": {
"help": "EAP SSID",
"value": "\"your-peap-ap-name\""
},
"peap_username": {
"help": "PEAP Username",
"value": "\"your-peap-username\""
},
"peap_password": {
"help": "PEAP Password",
"value": "\"your-peap-password\""
},
"wifi-password_8021x": {
"help": "EAP PASS",
"value": "\"your-peap-password\""
}
},
"target_overrides": {
"*": {
"target.network-default-interface-type": "WIFI",
"platform.stdio-convert-newlines": true
}
}
}
Then use following main.cpp to connect to PEAP AP:
#include "mbed.h"
#include "OdinWiFiInterface.h"
#define DEFAULT_WIFI_CONN_CHANNEL 0
OdinWiFiInterface *wifi;
static const char *_ap_ssid_8021x = MBED_CONF_APP_WIFI_SSID_8021X;
static const char *_ap_pass_8021x = MBED_CONF_APP_WIFI_PASSWORD_8021X;
static const char *_peap_username = MBED_CONF_APP_PEAP_USERNAME;
static const char *_peap_user_pass = MBED_CONF_APP_PEAP_PASSWORD;
int main()
{
int result;
printf("WiFi example: Connecting to WiFi AP using PEAP\n");
wifi = new OdinWiFiInterface(true);
result = wifi->set_dhcp(true);
if (!wifi) {
printf("ERROR: No WiFiInterface found.\n");
return -1;
}
auth_cert_s s_certificates;
s_certificates.client_cert = NULL;
s_certificates.client_prvt_key = NULL;
s_certificates.ca_cert = NULL; // If your PEAP AP uses CA cert, place it in the char array and reference it here as &ca_cert_data[0]
printf("Connecting to network\n");
result = wifi->connect(_ap_ssid_8021x, _ap_pass_8021x , NSAPI_SECURITY_PEAP, s_certificates, _peap_username, _peap_user_pass, DEFAULT_WIFI_CONN_CHANNEL);
if (result != NSAPI_ERROR_OK) {
printf("\nConnection error: %d\n", result );
return -1;
}
printf("Success\n\n");
printf("MAC: %s\n", wifi->get_mac_address());
printf("IP: %s\n", wifi->get_ip_address());
printf("Netmask: %s\n", wifi->get_netmask());
printf("Gateway: %s\n", wifi->get_gateway());
printf("RSSI: %d\n\n", wifi->get_rssi());
printf("\nDone\n");
}
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