Vekatech


Vekatech Ltd. is a privately owned company founded in Plovdiv Bulgaria. We design and manufacture complex solution for the automotive market and also perform EMS subcontracting services.

Booting from SD Card

Table of Contents

    Along with the standard FLASH boot, VK-RZ/A1H is equipped with additional extra feature - SD boot

    When you insert a specially prepared micro SD Card in the card holder and power the board with closed JP2 & JP3, it boots from the SD Card. The user application on the SD Card is copied to 1 of the 3 locations (SRAM, SDRAM or FLASH)

    • This allow you to do the following:
      • I. Starting the user application from the internal 10-MB on-chip SRAM.
      • II. Starting the user application from the external 32-MB on-board SDRAM.
      • III. Programming of the on-board serial FALSH in single (16-MB)/dual (32-MB) mode.

    The tool VKRZA1H-SDHI is intended to create bootable micro SD Cards. Once the card is already bootable, a file vkrza1h.ini select from which memory area to load and run the application. Detailed instructions on how to boot from SD Card you can find in SD CARD RAM_Flash_I2C Loader.pdf:

    Examples:

    0. Follow the instructions of VKRZA1H-SDHI tool to create a bootable SD card.

    • Run mbed_blinky from SRAM
      • 1. Copy this in location: <SD>:\vkrza1\sflash\S25FL128S_64K\app
      • 2. Replace the content of vkrza1h.ini with that in here.
      • 3. Power up through mbed debug USB & open a terminal on mbed Serial Port (115200, 8, 1, N).
      • 4. Make sure JP2, JP3 are closed (Boot from SD) and insert the card in the holder
      • 5. Press Reset button and the console should display: /media/uploads/tvendov/sram_console.png
      • 6. LD1 should be blinking.
    • Run mbed_blinky from SDRAM
      • 1. Copy this in location: <SD>:\vkrza1\sflash\S25FL128S_64K\app
      • 2. Replace the content of vkrza1h.ini with that in here.
      • 3. Power up through mbed debug USB & open a terminal on mbed Serial Port (115200, 8, 1, N).
      • 4. Make sure JP2, JP3 are closed (Boot from SD) and insert the card in the holder
      • 5. Press Reset button and the console should display: /media/uploads/tvendov/sdram_console.png
      • 6. LD1 should be blinking.
    • Program mbed_blinky to FLASH (dual mode) through SD Card
      • if the board is in single flash mode switch to dual:
        • 1. Replace the content of vkrza1h.ini with that in here.
        • 2. Power up through mbed debug USB & open a terminal on mbed Serial Port (115200, 8, 1, N).
        • 3. Make sure JP2, JP3 are closed (Boot from SD) & press Reset button.
        • 4. The console should display: /media/uploads/tvendov/dual_sflash_init_console.png
      • if the board is already in dual mode:
        • 1. Copy this in location: <SD>:\vkrza1\sflash\S25FL128S_64K\app
        • 2. Replace the content of vkrza1h.ini with that in here.
        • 3. Power up through mbed debug USB & open a terminal on mbed Serial Port (115200, 8, 1, N).
        • 4. Make sure JP2, JP3 are closed (Boot from SD) and insert the card in the holder
        • 5. Press Reset button and the console should display: /media/uploads/tvendov/sd_to_sflash_mbed_blinky_console.png
        • 6. Make sure JP1, JP3 are closed (Boot from Flash) and press Reset.
        • 7. LD1 should be blinking.
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