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TMDSICE3359: SD Card release version

Ricard Serra
Prodigy 20 points

Part Number: TMDSICE3359
Other Parts Discussed in Thread: PROFIBUS, AM3359

Application Behavior: The Profibus DB Slave application functions correctly when loaded via JTAG/CCS in Debug mode. However, it fails to execute autonomously when deployed to a microSD card for Release operation.

What i've tried:

1. SPI Flash Erase Procedure

A. Hardware Preparation and Connection

    • Jumper Configuration: Connected pins 1 and 2 of jumper J5 (Sysboot) to set the initial configuration mode.
    • Data Connection: Connected the TI board to my pc via a micro-USB cable to port J13. 
    • Power Supply: Provided 24V DC power to the board via the power jack.

B. CCS Environment Setup

    • Target Creation: Generated a target configuration file named AM3359-ice-v2.ccxml.
    • Parameter Definition: Selected the Texas Instruments XDS100v2 USB Debug Probe connection and the ICE_AM3359 device.

C. Loading the Flash Programmer

    • Session Launch: Launched the configuration from the Target Configurations view to switch CCS to the Debug perspective.
    • Core Connection: Established a direct link with the CortexA8 core using the Connect Target command.
    • Binary Load: Loaded the utility software spi_flash_writer_AM335X.out (found in the StarterWare tools) into the processor's RAM.

D. SPI Flash Erase Execution

    • Start Application: Pressed Resume to run the flasher on the board.
    • Erase Commands: Selected option 2 (Erase).
    • Parameters: Set the size to 64 KB (10000 in HEX).
    • Verification: Confirmed the process once the message "Erase complete. Exiting" appeared.

2. Release Deployment (Boot from SD)

Using a microSD card (capacity <= 8 GB) formatted in FAT32.

A. Generate the Application File (app)

    1. In command promp:

C:\ti\pdk_am335x_1_0_17\packages\ti\starterware\tools\ti_image

    1. To set the entry point to DDR3 memory (0x80000000):

tiimage.exe 0x80000000 NONE C:\ti\PRU-ICSS-Profibus_Slave_01.00.02.01\...\profibus_slave_AM335x_arm.bin app

    1. Copied the resulting app file to the root of the microSD card.

B. Preparing the Bootloader (MLO)

    1. Navigate to:

C:\ti\pdk_am335x_1_0_17\packages\ti\starterware\binary\bootloader\bin\am335x-evm\gcc

    1. Copid the file "bootloader_boot_mmcsd_a8host_release_ti.bin" to the root of the microSD card and renamed it exactly MLO (case-sensitive, no extension).

3. Final Hardware Configuration and Boot

    1. Reconfigure J5: Powered down the board and moveed jumper J5 to pins 2 and 3 to prioritize MMC/SD booting.
    2. Industrial Mode: Connected pins 2 and 3 for the jumpers J18/J19.
    3. Insertion and Power: Insert the card into slot J16. Upon connecting the 24V power, the system did not connect via profibus as it does when using debbug.