The Starterkit STKa6x consisting of the TQMa6x module and MBa6x mainboard is intended as evaluation platform for the TQMa6x. To bring up the board a comprehensive set of accessories is supplied with the kit. The STKa6x is delivered preconfigured to boot the latest released Linux BSP revision at the time of delivery, so only the Host Computer has to be set up properly to bring the STKa6x up. This page guides through the first steps with the STKa6x Starterkit.
The FTDI driver is maintained in the Linux mainline kernel, the configuration options below must be activated in the Linux kernel configuration to operate the USB-to-Serial converter
The driver can be downloaded from the FTDI website:
https://ftdichip.com/drivers/vcp-drivers/
An installation guide can be found at the following link:
https://ftdichip.com/document/installation-guides/
Minicom is a command line based serial terminal for serial communication with hardware like our starterkits.
$ sudo apt install minicom
In order for the terminal to work properly with full rights you need to add your user to the dialout group:
$ sudo usermod -a -G dialout $USER
To determine the serial device name under linux you can use dmesg. Just run the command below and then plug in the starter kit to see the new detected interface names:
$ dmesg -w
Once the interface name is clear you can abort dmesg with ctrl + c.
Now you can start minicom via the command line interface:
$ minicom -D /dev/ttySx
The serial configuration should be correct by default. However, hardware flow control must be disabled for some starter kits, otherwise the communication works only in one direction.
TeraTerm is an open source terminal emulator for windows. It can be downloaded here.
The serial port which connects the STKa6x to the Host PC must be configured as follows:
| Baud rate: | 115200 |
|---|---|
| Data bits: | 8 |
| Parity: | none |
| Stop bits: | 1 |
| Handshake: | XON/XOFF |
Please follow the quick start guide delivered with the kit, or open it from the following link: Quick start guide
As soon as logging in on the Linux shell for the first time, the question about the login credential comes up.
By default the user root is used to log into the Linux shell, no password is set for user root.
tqmaxx-mbaxx login: root
To get familiar with the interfaces of the STKa6x we recommend to work through the interface tutorials first.
The Board Support Packages provided by TQ may not contain all software packages to evaluate the STKa6x, therefore TQ provides some guides how to build the BSP and customize it for your needs:
In addition to the BSP documentation, the Yocto SDK build and Eclipse IDE setup for the STKa6x is also documented.
The STKa6x can be setup to boot from different sources. Please see the DIP switch settings below to change the boot source.
To select the desired boot medium set the DIP switches S1, S2, S4 and S5 accordingly.
To enable boot device selection BOOT_MODE has to be set to “Internal Boot”.
This can be done using DIP switch
S5 on MBa6x:
| BOOT_MODE | S5-1 | S5-2 |
|---|---|---|
| Boot from eFuses | 0 | 0 |
| Serial Downloader | 0 | 1 |
| Internal Boot | 1 | 0 |
The following boot modes of the i.MX6 can be selected by the DIP switches S1, S2, S4 and S5 on the MBa6x.
S1
S2
S4
S4 has no effect
S5
S1
S2
S4
S4 has no effect
S5
S1
S2
S2 has no effect
S4
S5
DIP-Switch settings for CAN and RS485.
DIP switch S13 is used to configure the CAN interfaces CAN1 and CAN2.
| DIP | OFF (default) | ON |
|---|---|---|
| S13-1 | CAN0 not terminated | CAN0 interface terminated (120Ω) |
| S13-2 | CAN1 not terminated | CAN1 interface terminated (120Ω) |
DIP switch S14 is used to configure the RS485 interface.
| DIP | OFF (default) | ON |
|---|---|---|
| S14-1 | RS485 RxD not terminated | RS485 RxD terminated (120Ω) |
| S14-2 | RS485 TxD not terminated | RS485 TxD terminated (120Ω) |