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    WiFi Add board: Connection Problem

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    • C
      CamilaSouza DeveloperWorld last edited by

      @jp04

      Update on support for WiFi Add on Board iS110B:

      I contacted IDY and was told the support for this board was handed to Restar Electronics Corporation.
      https://www.restar-ele.com/

      I sent them a message asking for support on the issue of uploading SSL certificates to the board.
      Will keep you posted on the issue.

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        jens6151 0 1 1 @jp04 last edited by jens6151 0 1 1

        @jp04 I suggest you install the nsh sample

        You will get a shell and have commands like cd (change directory), ls (list directory), mv (move), rm (remove) and cat (prints the content) available. See a list of all commands by typing "help".

        ls /mnt/spif/BIN
cat /mnt/spif/BIN/SRC

        Seems like you named the certificate file "SRC"".

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        • Referenced by  J jens6151 0 1 1 
        • J
          jp04 @CamilaSouza last edited by

          @CamilaSouza Thank you for contacting them. I will keep follow this topic. I hope they can help me to solve this issue.

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            jp04 @jens6151 0 1 1 last edited by

            @jens6151-0-1-1 Thank you for your support. I managed to check the files located at the flash memory. I had to do some modifications to the code of the example due to the following error compile messages:

            error: #error "Core selection is wrong!!"

            Solution. Comment the line 22: #error "Core selection is wrong!!"

            After that I got the following compile error:

            Compilation error: no matching function for call to 'MPClass::begin()'

            Solution. Add the following:

            int subcore = 1;

            and

            MP.begin(subcore);

            instead of

            MP.begin();

            After that the code runs without any problem.

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            • C
              CamilaSouza DeveloperWorld @jp04 last edited by

              Hello @jp04

              I received a response from Lester Electronics.
              They said their technical support is limited, but they did point me to a good documentation.

              You can find the manual in this link.
              https://www.roundsolutions.com/media/pdf/700-0052_GS2101M-S2W-Adapter-Command-Reference-Guide-r1.0.pdf

              Check section "7.2.1 Certificate Addition".

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                jp04 @CamilaSouza last edited by

                @CamilaSouza Hi. Thanks for all your help. I found that document before, and the problem with that command (AT+TCERTADD) is that they use the Tera Term VT interface to add the certificate after this command is sent. I dont know how to do it from Arduino IDE because after using that command and trying to connect to the server it always appears that it can't find the certificates, despite the fact that the "AT+TCERTADD" command shows me an "OK" after executing it. I do not know what else can I do.

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                  jens6151 0 1 1 @jp04 last edited by jens6151 0 1 1

                  @jp04 I assume you are using Serial.print() to send the command, right? (Or Serial5, Serial3)

                  const unsigned char myCertificate[] = {
	0x7F, 0x45, 0x4C, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x02, 0x00, 0x28, 0x00, 0x01, 0x00, 0x00, 0x00, .... }

const size_t myCertificateSize = sizeof(myCertificate);

Serial5.printf("AT+TCERTADD=SSL_CA,0,%d,1\r\n", myCertificateSize);
sleep(1);
Serial5.write(myCertificate, myCertificateSize);
sleep(1);
Serial5.printf("AT+CERTINFOGET=SSL_CA\r\n");

                  I do not have the board. I did not compile above.
                  Please check if \r\n is the correct termination. Serial.write writes the bytes. This can be also file content from a SD card or Flash Memory.

                  I was evaluating buying this wifi board but I am not sure buying hardware that is already EOL. Could you please tell me how the performance of this wifi board is? How long does it take to send large data like camera images?

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                  • J
                    jens6151 0 1 1 @jp04 last edited by

                    @jp04 Does the "AT+TCERTADD"show OK two times?

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                      jens6151 0 1 1 @jens6151 0 1 1 last edited by

                      @jens6151-0-1-1 Ah sorry. The certificate is likely a string ...

                      #define CERTS_DIGICERT_GLOBAL_ROOT_CA                                  \
  "-----BEGIN CERTIFICATE-----\n"                                      \
  "MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh\n" \
  "CSDMAZOnTjC3U/dDxGkAV53ijSLdhwZAAIEJzs4bg7/fzTtxRuLWZscFs3YnFo97\n" \
  "nh6Vfe63SKMI2tavegw5BmV/Sl0fvBf4q77uKNd0f3p4mVmFaG5cIzJLv07A6Fpt\n" \
  "43C/dxC//AH2hdmoRBBYMql1GNXRor5H4idq9Joz+EkIYIvUX7Q6hL+hqkpMfT7P\n" \
  "T19sdl6gSzeRntwi5m3OFBqOasv+zbMUZBfHWymeMr/y7vrTC0LUq7dBMtoM1O/4\n" \
  "gdW7jVg/tRvoSSiicNoxBN33shbyTApOB6jtSj1etX+jkMOvJwIDAQABo2MwYTAO\n" \
  "BgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUA95QNVbR\n" \
  "TLtm8KPiGxvDl7I90VUwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUw\n" \
  "DQYJKoZIhvcNAQEFBQADggEBAMucN6pIExIK+t1EnE9SsPTfrgT1eXkIoyQY/Esr\n" \
  "hMAtudXH/vTBH1jLuG2cenTnmCmrEbXjcKChzUyImZOMkXDiqw8cvpOp/2PV5Adg\n" \
  "06O/nVsJ8dWO41P0jmP6P6fbtGbfYmbW0W5BjfIttep3Sp+dWOIrWcBAI+0tKIJF\n" \
  "PnlUkiaY4IBIqDfv8NZ5YBberOgOzW6sRBc4L0na4UU+Krk2U886UAb3LujEV0ls\n" \
  "YSEY1QSteDwsOoBrp+uvFRTp2InBuThs4pFsiv9kuXclVzDAGySj4dzp30d8tbQk\n" \
  "CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=\n"                 \
  "-----END CERTIFICATE-----\n"

static const char* certs = CERTS_DIGICERT_GLOBAL_ROOT_CA;

// the setup function runs once when you press reset or power the board
void setup() {

  Serial.begin(115200);
  while (!Serial) {}
  
  Serial.printf("AT+TCERTADD=SSL_CA,0,%d,1\r\n", strlen(certs));
  sleep(1);
  Serial.write((const uint8_t*) certs, strlen(certs));
  sleep(1);
  Serial.printf("AT+CERTINFOGET=SSL_CA\r\n");
}

// the loop function runs over and over again forever
void loop() {}

                      If it does not work, could you please post your code (replacing or cutting the certificate if it is a secret one)

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                        jp04 @jens6151 0 1 1 last edited by

                        @jens6151-0-1-1 Thank you very much for your help. I tried it and it didn't work. Initially I used the following code and the "OK" does not appear at any time after sending the commands (I don't show the certificate in the code below)

                        const char* certs1= \
"-----BEGIN CERTIFICATE-----\n"  \
"-----END CERTIFICATE-----\n";

void setup() {
	/* initialize digital pin of LEDs as an output. */
	pinMode(LED0, OUTPUT);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);

  digitalWrite( LED0, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED1, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED2, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED3, LOW );   // turn the LED off (LOW is the voltage level)
  Serial.begin( CONSOLE_BAUDRATE ); // talk to PC

  /* Initialize SPI access of GS2200 */
	Init_GS2200_SPI();
  digitalWrite( LED0, HIGH ); // turn on LED

  /* Initialize AT Command Library Buffer */
	AtCmd_Init();
  digitalWrite( LED1, HIGH ); // turn on LED

  /* GS2200 Association to AP */
	App_InitModule();
  digitalWrite( LED2, HIGH ); // turn on LED
	App_ConnectAP();
  digitalWrite( LED3, HIGH ); // turn on LED

  Serial.printf("AT+TCERTADD=SSL_CA,1,%d,0\r\n", strlen(certs));
  sleep(1);
  Serial.write((const uint8_t*) certs, strlen(certs));
  sleep(1);
  Serial.printf("AT+CERTINFOGET=SSL_CA\r\n");
}

                        18:01:59.012 -> AT+TCERTADD=SSL_CA,0,54,1
18:02:00.783 -> -----BEGIN CERTIFICATE-----
18:02:00.783 -> -----END CERTIFICATE-----
18:02:01.021 -> AT+CERTINFOGET=SSL_CA

                        In the documentation they mention a specific function to send the AT commands, so I made the change in the above code. This time only the OK appears with the first AT command and at the moment of verifying the loaded certificate I get an error.

                        const char* certs1= \
"-----BEGIN CERTIFICATE-----\n"  \
"-----END CERTIFICATE-----\n";

void setup() {
	/* initialize digital pin of LEDs as an output. */
	pinMode(LED0, OUTPUT);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);

  digitalWrite( LED0, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED1, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED2, LOW );   // turn the LED off (LOW is the voltage level)
  digitalWrite( LED3, LOW );   // turn the LED off (LOW is the voltage level)
  Serial.begin( CONSOLE_BAUDRATE ); // talk to PC

  /* Initialize SPI access of GS2200 */
	Init_GS2200_SPI();
  digitalWrite( LED0, HIGH ); // turn on LED

  /* Initialize AT Command Library Buffer */
	AtCmd_Init();
  digitalWrite( LED1, HIGH ); // turn on LED

  /* GS2200 Association to AP */
	App_InitModule();
  digitalWrite( LED2, HIGH ); // turn on LED
	App_ConnectAP();
  digitalWrite( LED3, HIGH ); // turn on LED

  AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CA,1,54,0\r\n");
  sleep(1);
  Serial.write((const uint8_t*) certs1, strlen(certs1));
  sleep(1);
  AtCmd_SendCommand( (char *) "AT+CERTINFOGET=SSL_CA\r\n"); 
}

                        18:19:31.185 -> >AT+TCERTADD=ssl_cacert,1,54,0
18:19:31.221 -> 
18:19:31.221 -> 
18:19:31.221 -> OK
18:19:31.221 -> GS Response: 1
18:19:32.192 -> -----BEGIN CERTIFICATE-----
18:19:32.192 -> -----END CERTIFICATE-----
18:19:33.212 -> >AT+CERTINFOGET=ssl_cacert
18:19:33.212 -> 
18:19:33.212 -> 
CA certificate not found
18:19:33.212 -> ERROR
18:19:33.212 -> GS Response: 4

                        Then I tried another change, but with no positive results. I changed the Serial_write function to the WiFi_Write function, because reviewing the source code I noticed that they use this function to send data to the wifi module. However, in this case an error occurs. So far I still do not know what to do to achieve the successful upload and SSL connection with this wifi module.

                        18:25:28.063 -> >AT+TCERTADD=ssl_cacert,1,54,0
18:25:28.097 -> 
18:25:28.097 -> 
18:25:28.097 -> OK
18:25:28.097 -> GS Response: 1
18:25:30.082 -> >AT+CERTINFOGET=ssl_cacert
18:25:30.082 -> 
18:25:30.082 -> ERROR: INVALID INPUT
18:25:30.082 -> GS Response: 4
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                        • J
                          jp04 @jp04 last edited by

                          @jens6151 0 1 1 in one of the previous codes I had an error. I made the corresponding change of the variable certs to the variable certs1. The "OK" did not appear.

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                            jens6151 0 1 1 @jp04 last edited by jens6151 0 1 1

                            @jp04 Thanks for posting the code. It brings clarity.

                            1. You use a library. Maybe this https://github.com/jittermaster/GS2200-WiFi?
                            2. My assumption that you communicate via Serial was wrong.

                            It is required to send the certificate by SPI.
                            Did you already try this?

                              AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CA,1,54,0\r\n");
  sleep(1);
  AtCmd_SendCommand( (char *) certs1);
  sleep(1);
  AtCmd_SendCommand( (char *) "AT+CERTINFOGET=SSL_CA\r\n");

                            Alternatively

                            WiFi_Write(certs1, strlen(certs1));

                            Does your certificate have more than 1400 bytes (characters)? If so you might try to raise the buffer inside the library or cut the certificate into smaller pieces, sending them one by one.

                            #define SPI_MAX_SIZE   1400
#define TXBUFFER_SIZE  SPI_MAX_SIZE
#define RXBUFFER_SIZE  1500
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                              jp04 @jens6151 0 1 1 last edited by

                              @jens6151-0-1-1 Thanks for your help. Thats correct, I am using that library.

                              When I tried the following

                                AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CA,1,1505,0\r\n");
  sleep(1);
  AtCmd_SendCommand( (char *) certs);
  sleep(1);
  AtCmd_SendCommand( (char *) "AT+CERTINFOGET=SSL_CA\r\n");

                              I got

                              17:23:47.969 -> >AT+TCERTADD=SSL_CA,1,1505,0
17:23:47.969 -> 
17:23:47.969 -> 
17:23:47.969 -> OK
17:23:47.969 -> GS Response: 1
17:23:49.026 -> >-----BEGIN CERTIFICATE-----
17:23:49.567 -> ERROR: INVALID INPUT
17:23:49.567 -> GS Response: 4
17:23:50.076 -> >AT+CERTINFOGET=SSL_CA
17:23:50.076 -> 
17:23:50.076 -> 
17:23:50.076 -> ERROR: INVALID INPUT

                              Then, I changed it for

                                AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CA,1,1505,0\r\n");
  do{
   		s = WiFi_Write( certs, strlen(certs) );
		if( s != SPI_RESP_STATUS_OK )
    delay(100);
	}while( s != SPI_RESP_STATUS_OK );
  AtCmd_SendCommand( (char *) "AT+CERTINFOGET=SSL_CA\r\n");

                              and got

                              17:37:03.433 -> >AT+TCERTADD=SSL_CA,1,1505,0
17:37:03.433 -> 
17:37:03.433 -> 
17:37:03.433 -> OK
17:37:03.433 -> GS Response: 1
17:37:03.433 -> >AT+CERTINFOGET=SSL_CA
17:37:03.471 -> 
17:37:03.471 -> 
17:37:03.471 -> ERROR: INVALID INPUT
17:37:03.471 -> GS Response: 4

                              It seems that something is missing after using the WiFi_Write instruction because any command I send after that instruction I get "ERROR: INVALID INPUT". I keep looking for a solution to this, but I can't find anything about it. Thank you very much for your continued support and I hope we can find a solution soon.

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                                jp04 @jp04 last edited by

                                Also already raised the buffer inside the library

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                                  jens6151 0 1 1 @jp04 last edited by

                                  @jp04 I see.
                                  I read the manual more carefully. I noticed

                                  • 2.3 Command Processing Mode
                                    Each command is terminated with a carriage return <CR> or line feed <LF>.
                                    I think we always send both
                                  • 2.4 Data Handling
                                    In Data Processing Mode, data transfers are managed using various escape sequences.
                                    There is a data mode entered by escape sequences
                                  • 7.2.1 Certificate Addition
                                    <ESC>W<certificate of the above size>
                                    Note the <ESC>W

                                  -> How about trying this?

                                  char escape[2];
escape[0] = 0x1B;
escape[1] = 'W';

AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CA,1,1505,0\r\n");
  sleep(1);
  WiFi_Write( escape, 2 );
  AtCmd_SendCommand( (char *) certs);
  sleep(1);
  AtCmd_SendCommand( (char *) "AT+CERTINFOGET=SSL_CA\r\n");
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                                    maxieaussie 0 @jp04 last edited by

                                    @jp04 yes I had to do this too btw @CamilaSouza if you talk to IDY could you please ask them why they decided to use an OBSOLETED and very old Telit wifi module? (I can't believe it when I checked the actual module!)

                                    Just for funI am now trying to use a more modern ATWINC1500 (Microchip/Atmel) just using an Adafruit shield but left with a lot of homework as Wifi101 library is incompatible with spresense (conflict/duplicate in the socket module-data types are not even the same).

                                    While spresense is OK for homegrown project for anyone who is considering to start with this platform and then take it to "production" might be disappointed . I would suggest to look at solutions form Microcontroller companies (Renesas, Microchip, ST) should your goal is "production". At the end of the day you are most likely would be unable to buy the Sony MCU unless you are ordering a huge qty from Sony imho.

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                                      jens6151 0 1 1 @maxieaussie 0 last edited by jens6151 0 1 1

                                      @maxieaussie-0
                                      What exactly did you have to do too?
                                      You referred to modifying the library. You used that module too? Can you give any feedback on the performance of this very old module? I am looking for something to stream camera images (1280x960, jpeg, can be even 1fps) over network. Just for hobby, 1 piece.

                                      This Wifi add on board itself is also EOL.

                                      Let me make one guess. There are only a very few wifi/BLE/LTE modules available that are certified for usage in Japan. About 90% (my feeling) is not allowed to be used, even for prototyping. Since a few years there is a system where you can apply for exceptions if the module is FCC certified. But it is limited to 6 months, then you must dispose the hardware ...

                                      For what I have seen on the vendors' sites as documentation or samples or availability .. forget about all 3rd party modules. (sorry to overgeneralize if I missed a good vendor)

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                                        jp04 @jens6151 0 1 1 last edited by

                                        @jens6151-0-1-1 I am sorry for my late response. Thank you for continuing to help me with this issue. I really don't know what else to do, once I execute those commands I get OK as a response, however after sending the information I get "SPI Timeout".

                                        10:38:21.758 -> >AT+TCERTDEL=SSL_CACERT
10:38:21.758 -> OK
10:38:21.758 -> GS Response: 1
10:38:21.758 -> >AT+TCERTDEL=SSL_CLIENTCERT
10:38:21.758 -> OK
10:38:21.758 -> GS Response: 1
10:38:21.758 -> >AT+TCERTADD=SSL_CACERT,1,1472,0
10:38:21.795 -> OK
10:38:21.795 -> GS Response: 1
10:38:24.794 -> >AT+TCERTADD=SSL_CLIENTCERT,1,1424,0
10:38:24.794 -> OK
10:38:24.794 -> GS Response: 1
10:38:27.844 -> >AT+TCERTADD=SSL_CLIENTKEY,1,1704,0
10:38:27.844 -> OK
10:38:27.844 -> GS Response: 1
10:38:30.859 -> >AT+MQTTCONNECT=XXX,8883,User1,,,1,SSL_CACERT,SSL_CLIENTCERT,SSL_CLIENTKEY,30
10:38:30.859 -> OK


10:38:35.895 -> >AT+MQTTPUBLISH=
10:38:55.877 -> SPI: Timeout
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                                          jens6151 0 1 1 @jp04 last edited by jens6151 0 1 1

                                          @jp04 I cannot see what you send. It is only AT+MQTTPUBLISH=

                                          Are you sending according to the documentation? Note the <ESC>N<CID>

                                          This is the documentation
                                          This Command is used to send an Application Messages from client to the server. Command Syntax

                                          AT+MQTTPUBLISH=<CID>,<TopicName>,<Length>,<Qos>[,<Retain Flag>]

                                          MCU sends MQTT data using the following Escape <ESC> sequence:

                                          <ESC>N<CID><DataofaboveLength>

                                          Also connect should return not just OK

                                          <IP>:<xxx.xxx.xxx.xxx>
<CID>
OK
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                                            jp04 @jens6151 0 1 1 last edited by jp04

                                            @jens6151-0-1-1 Hi. I just uploaded the code related with the certifications. Already fixed the MQTT Publish problem but i think the problem persist on the certifications.

                                            AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CACERT,1,1472,0\r\n");
sleep(1);
WiFi_Write( escape, 2 );
sleep(1);
WiFi_Write(ca_cert, strlen(ca_cert));
sleep(1);
AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CLIENTCERT,1,1424,0\r\n");
  sleep(1);
  WiFi_Write( escape, 2 );
  sleep(1);
  WiFi_Write(client_cert, strlen(client_cert));
  sleep(1);
  AtCmd_SendCommand( (char *) "AT+TCERTADD=SSL_CLIENTKEY,1,1704,0\r\n");
  sleep(1);
  WiFi_Write( escape, 2 );
  sleep(1);
  WiFi_Write(client_key, strlen(client_key));

                                            Output:

                                            15:04:02.476 -> >AT+MQTTCONNECT=XXX,8883,User1,,,1,SSL_CACERT,SSL_CLIENTCERT,SSL_CLIENTKEY,30
15:04:02.476 -> OK
15:04:02.476 -> GS Response: 1
15:04:02.476 -> No CID!
15:04:04.503 -> >AT+MQTTPUBLISH=0,XXX,322,0,0
15:04:04.503 -> OK
15:04:04.503 -> GS Response: 1
15:04:09.534 -> >AT+MQTTPUBLISH=0,XXX,322,0,0
15:04:09.534 -> OK
15:04:09.534 -> GS Response: 1
15:04:14.534 -> >AT+MQTTPUBLISH=0,XXX,322,0,0
15:04:14.534 -> IP:XXX
15:04:14.534 -> ERROR
15:04:14.534 -> GS Response: 4
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