Enable the SK-AM62P-LP

In this document we will look at the main steps to enable the SK-AM62P-LP board. This is not always necessary since TI might send us an already enabled board.

Tool Required

You’ll need the xdsdfu tool to enable the DUT. The tool has been give to us by TI to let us enable the boards ourselves. At the moment, only Linaro employees are authorized to make use of it and public distribution is prohibited. Please get in touch with the LAA team in order to have access.

Firmware Required

You’ll additionally need a specific firmware. It was give to us by TI to let us enable the boards ourselves. At the moment, only Linaro employees are authorized to make use of it and public distribution is prohibited. Please get in touch with the LAA team in order to have access.

In this document we will refer to the firmware file with firmware_3.0.0.35_71173da2364c309abf00941b6c4d4d4e.bin.

Test Automation Interface

For LAVA the SK-AM62P-LP is enabled when the “Test Automation Interface” is enabled on the board.

The “Test Automation Interface” should be available via the XDS port.

Once you cannot the DUT to your PC you should be able to the XDS serial:

$ ls -l /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Feb 26 10:59 usb-Texas_Instruments_XDS110_XXX

Where XXX is different depending on the interface version on the board.

We can check if the Test Automation Interface is already enabled by connecting to the serial and see if it is responding. Here is an example:

$ sudo tio /dev/serial/by-id/usb-Texas_Instruments_XDS110__03.00.00.35__Embed_with_CMSIS-DAP_S62G0012-if03
[11:12:55.321] tio v2.5
[11:12:55.321] Press ctrl-t q to quit
[11:12:55.322] Connected

Test Automation Interface - v12.8.0.00186-3141-34-g6df2824c2f
 auto reset                                :Warm reset DUT
 auto por                                       :Power on reset DUT
 auto hold_por                                  :Hold Power on reset DUT
 auto release_por                               :Release Power on reset DUT
 auto power <on|off>                            :Power on|off DUT
 auto sysboot <setting>                         :e.g. 110000
 auto boot list                                 :List supported boot modes for device
 auto dut list                                  :List supported devices
 auto set dut <DUT type>                        :Initialize i2c for DUT
 auto scan i2c                                  :Scan i2c bus for devices
 auto probe i2c                                 :Probe i2c bus for addr
 auto ina help                                  :Print help menu for INA interface
 auto measure temperature                       :Read temperature sensors
 auto measure power <samples(<=150)> <delay(ms)>:Measure DUT power
 dfu                                            :Put the Test Automation Interface device into DFU mode
 version                                        :Show SW version
 help                                           :Print this menu

If Test Automation Interface - vXX.X.X.XXXXX comes out, then the board should already be working with LAVA. If no output comes out or you want to update the board, please continue reading the document.

Flashing

Assuming we have both xdsdfu and firmware_3.0.0.35_71173da2364c309abf00941b6c4d4d4e.bin in the working directory. Also please disconnect tio.

$ chmod +x xdsdfu

Set the configuration on the DUT.

$ sudo ./xdsdfu -m
$ sudo ./xdsdfu -c 5 -r

Problem: “Unable to load libusb.”

Run the following:

sudo apt-get install libusb-1.0-0-dev

Problem: “Scanning USB buses for supported XDS110 devices… The requested device was not found on the bus.”

Run with sudo

Problem: Again “Scanning USB buses for supported XDS110 devices… The requested device was not found on the bus.”

The command enables the Test Automation immediately, in my case it made the JTAG interface not responsive any longer to “xdsdfu”

Solution

It is possible to change the configuration also from the Test Automation interface via the “dfu” command. Connect via tio. The Test Automation Interface does not have this issue.

sudo tio /dev/serial/by-id/usb-Texas_Instruments_XDS110__03.00.00.26__Embed_with_CMSIS-DAP_S62G0012-if00

dfu            :Put the Test Automation Interface device into DFU mode

=> dfu

Configuration Options

You can list the different configuration options with:

$ sudo ./xdsdfu -c ?

Flash the firmware

$ sudo ./xdsdfu -m
$ sudo ./xdsdfu -f firmware_3.0.0.35_71173da2364c309abf00941b6c4d4d4e.bin -r

Once finished, please check the serial again.

$ sudo tio /dev/serial/by-id/usb-Texas_Instruments_XDS110__03.00.00.35__Embed_with_CMSIS-DAP_S62G0012-if03
[11:12:55.321] tio v2.5
[11:12:55.321] Press ctrl-t q to quit
[11:12:55.322] Connected

Test Automation Interface - v12.8.0.00186-3141-34-g6df2824c2f
 auto reset                                :Warm reset DUT
 auto por                                       :Power on reset DUT
 auto hold_por                                  :Hold Power on reset DUT
 auto release_por                               :Release Power on reset DUT
 auto power <on|off>                            :Power on|off DUT
 auto sysboot <setting>                         :e.g. 110000
 auto boot list                                 :List supported boot modes for device
 auto dut list                                  :List supported devices
 auto set dut <DUT type>                        :Initialize i2c for DUT
 auto scan i2c                                  :Scan i2c bus for devices
 auto probe i2c                                 :Probe i2c bus for addr
 auto ina help                                  :Print help menu for INA interface
 auto measure temperature                       :Read temperature sensors
 auto measure power <samples(<=150)> <delay(ms)>:Measure DUT power
 dfu                                            :Put the Test Automation Interface device into DFU mode
 version                                        :Show SW version
 help                                           :Print this menu

Your SK-AM62P-LP board should have not the Test Automation Interface enabled and can be used from LAVA.