Cannot enable WPA2 Enterprise using arduino libraries

[daniel-dsouza]

Hardware:

Board: Adafruit Feather ESP32
Core Installation/update date: ?8/9/2018?
IDE name: Arduino IDE and Platform.io
Flash Frequency: 80Mhz
Upload Speed: 921600

Description:

Fails on esp_wifi_sta_wpa2_ent_enable(&config);

Sketch:

#include "esp_wpa2.h"
#include <WiFi.h>

const char* ssid = "eduroam";
const char* eap_username = "hunter";
const char* eap_password = "hunter123";

void setup() {
  Serial.begin(115200);
  delay(10);

  Serial.print("Connecting to network: ");
  Serial.println(ssid);

  WiFi.disconnect(true);  //disconnect form wifi to set new wifi connection
  esp_wifi_sta_wpa2_ent_set_identity((uint8_t *)eap_username, strlen(eap_username));
  esp_wifi_sta_wpa2_ent_set_username((uint8_t *)eap_username, strlen(eap_username));
  esp_wifi_sta_wpa2_ent_set_password((uint8_t *)eap_password, strlen(eap_password));
  esp_wpa2_config_t config = WPA2_CONFIG_INIT_DEFAULT();
  esp_wifi_sta_wpa2_ent_enable(&config);

  WiFi.begin(ssid);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address set: ");
  Serial.println(WiFi.localIP()); //print LAN IP
}

void loop() {}

Debug Messages:

Enable Core debug level: Debug on tools menu of Arduino IDE, then put the serial output here

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x400e6f51  PS      : 0x00060530  A0      : 0x800d1ca6  A1      : 0x3ffb1f40  
A2      : 0x3ffb1f74  A3      : 0x3ffc5890  A4      : 0x00000000  A5      : 0x526312a6  
A6      : 0x00000001  A7      : 0x00000000  A8      : 0x00000000  A9      : 0x3ffb1f40  
A10     : 0x3ffb23cc  A11     : 0x3f4010a5  A12     : 0x0000000a  A13     : 0x3ffb23d6  
A14     : 0x00000079  A15     : 0x00000033  SAR     : 0x00000018  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000138  LBEG    : 0x4000c349  LEND    : 0x4000c36b  LCOUNT  : 0xffffffff  

Backtrace: 0x400e6f51:0x3ffb1f40 0x400d1ca3:0x3ffb1f70 0x4012ad1f:0x3ffb1fa0


PC: 0x400e6f51
EXCVADDR: 0x00000138

Decoding stack results
0x400d1ca3: setup() at /home/hunter/Documents/Arduino/sketch_aug09a/sketch_aug09a.ino line 24
0x4012ad1f: loopTask(void*) at /home/hunter/.arduino15/packages/esp32/hardware/esp32/1.0.0/cores/esp32/main.cpp line 15

[stickbreaker]

This code is invalid.

#define EAP_USERNAME "usrname"
#define EAP_PASSWORD "hunter123"

    esp_wifi_sta_wpa2_ent_set_identity((uint8_t *)EAP_USERNAME, strlen(EAP_USERNAME));
    esp_wifi_sta_wpa2_ent_set_username((uint8_t *)EAP_USERNAME, strlen(EAP_USERNAME));
    esp_wifi_sta_wpa2_ent_set_password((uint8_t *)EAP_PASSWORD, strlen(EAP_PASSWORD));

The define statement is just a substitution:

    esp_wifi_sta_wpa2_ent_set_identity((uint8_t *)"usrname", strlen("usrname"));

with this type declaration you are telling the compiler to treat the first four letters of "usrn" as the value of a pointer to a cstring of characters.

the correct way would be to define a variable:

const char* eap_username = "usrname";
    esp_wifi_sta_wpa2_ent_set_identity((uint8_t *)eap_usernam, strlen(eap_username));

Chuck.

[daniel-dsouza]

@stickbreaker

Thanks for finding that bug. I have updated my original post with the revised code. However the same error persists.

I am trying to follow the sample WPA2 enterprise sample

[stickbreaker]

@daniel-dsouza

Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.

LoadProhibited is telling you that an invalid memory address was access (READ). Usually this means that some pointer is loaded with an invalid value,

esp_wpa2_config_t config = WPA2_CONFIG_INIT_DEFAULT();
  esp_wifi_sta_wpa2_ent_enable(&config);

This is how WPA2_CONFIG_INIT_DEFAULT() is defined in esp32_wpa2.h

#include "esp_err.h"
#include "esp_wifi_crypto_types.h"

#ifdef __cplusplus
extern "C" {
#endif

extern const wpa2_crypto_funcs_t g_wifi_default_wpa2_crypto_funcs;

typedef struct {
    const wpa2_crypto_funcs_t *crypto_funcs;
}esp_wpa2_config_t;

#define WPA2_CONFIG_INIT_DEFAULT() { \
    .crypto_funcs = &g_wifi_default_wpa2_crypto_funcs \
}

It looks to me that

extern const wpa2_crypto_funcs_t g_wifi_default_wpa2_crypto_funcs;

May not have been initialized before you use it. It looks too me that you have skipped a few steps in the initialization sequence. I have no knowledge how to correctly use WPA2, so I can't be of any more help, Sorry.

Chuck.

[vitcon-iot]

WiFi.mode() is now required in order to init the hardware.

#1618
#1618 (comment)

[stale]

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[stale]

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