[Bug]. Problem with STM32F405VG and bootloader cortexM4

[francisjjp]

There is now issues with bootloader and ONLY GPRS with cortexM4 branch.

The starting point is last commit: 5735811733d07f31d388e064b0d07ad55f47857b

Problems detected:

1) Some times M95_OK connection is never reach. If so. It is needed to use retries variable with value >=3 instead 1. 2) Problem is at function: BOOT_ERRORS Boot_PerformFirmwareUpdate(void)

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// Clear buffer flash first
     FlashNVM_EraseBank(FLASH_BANK_COPY);

    // Get data
    sprintf(boot_buff, "GET /%s HTTP/1.1\r\nHost: %s\r\n\r\n", HTTP_SERVER_FW_FILENAME, HTTP_SERVER_IP);
    Socket_Clear(ssource);
    Socket_Write(ssource, boot_buff, strlen(boot_buff));
    // Read answer
    Socket_ClearTimeout(ssource);
    total_len = 0;
    while (!Socket_GetTimeout(ssource)) {

        len = Socket_Read(ssource, boot_buff, BOOT_BUFFER_SIZE);
        if (len) {
            if (WDT_ENABLED==1)  HAL_IWDG_Refresh(&hiwdg);
            FlashNVM_Write(fl_addr, (uint8_t*)boot_buff, len);
            total_len += len;
            fl_addr += len;
            Socket_ClearTimeout(ssource);
        }
    }

    if (total_len < 10) {
        //No file on server!
        if (LOG_WIFI==1) HAL_UART_Transmit(&huart6, "(BOOT ERROR No file on server)\r\n", 32,100); //Francis, for logging
        return BOOT_ERR_CONNECTION; //Err
    }
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total_len is always = 9. There is no any response from server, even no 404 response and firmware always exists.

We have tested over sinapseenergia.com:80 server and CMC_FRAN.bin with crc ok

There is into external 4 one DUT with APN=im2m.matooma.com. User =movistar Pass = movistar.

External 4: Anydesk: alvaro-pc-125@ad // Sinapse2017

[ralcaide]

@francisjjp , I know that there is a maximum size for the executable. Have you checked that? Could you try with an AP binary that we know that the size fits?. The maximum size of the executable is 480 KB.

[ralcaide]

At this moment, Sviatoslav is totally focused on AP and CMC and Sergey does not have other resource available. We are waiting for feedback