APPENDIX F: Test the End-to-End HQ-ST Link Communications: HQ and ST

Installed

1.Have the "tel" number of the ST Plus available (for example, 5551234).

2.Place a loopback connector on the serial port of the ST Plus. (Serial port pin 2 is connected to pin 3 on the DB-25F connector, and the TX pin is connected to the RX pin).

3.Connect a com:n serial port from the host PC to the modem connection of the HQ Plus. The cable from the PC to the HQ Plus is a standard straight-through cable (DB9F - DB25M).

4.Open a HyperTerminal com:n connection using serial I/O parameters that are compatible with the serial port setup at the HQ Plus and ST Plus devices (See “HyperTerminal” on page 32.).

5.Enter AT, ATZ, and ATH0 commands:

•Enter “AT”. The response should be “OK”. This response indicates that the HQ (modem) is ready and operating nor- mally.

•Enter the "tel" number of the ST Plus to which the HQ Plus is to connect, (for example, ATDT5551234). The response should be "CONNECTED ...".

6.Type some ASCII Text - the characters that are typed will be echoed back, as long as the loopback termination is in place on the ST Plus. Also, the TX and RX LEDs on the HQ Plus and ST Plus devices will both flicker to indicate that data is being transmitted and received. Lower baud rates will be indicated by longer LED "on" times.

Rev. A00

HQ-ST System Manual

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Lava Computer HQ-ST Link system manual Rev. A00 HQ-ST System Manual
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HQ-ST Link specifications

Lava Computer's HQ-ST Link is a robust tool designed for software developers and engineers dedicated to programming and debugging embedded systems. This versatile device combines advanced features with user-friendly technology, making it an indispensable asset for anyone working in the field of embedded software development.

One of the standout features of the HQ-ST Link is its compatibility with multiple microcontroller families, including STM32 and STM8 series. This broad compatibility ensures that developers can utilize the tool across various projects without the need for multiple programming solutions. The tool supports a wide range of communication protocols, making it versatile for various applications.

The HQ-ST Link is equipped with USB 2.0 connectivity, allowing for fast data transfer rates and seamless integration with various development environments. This facilitated connectivity is vital for loading firmware quickly during debugging sessions, ensuring efficiency when developing complex applications.

Additionally, the device supports SWD (Serial Wire Debug) and JTAG (Joint Test Action Group) interfaces, providing flexibility for software developers working with different debugging tools and strategies. The support for these interfaces enables users to conduct in-depth debugging and analysis, leading to efficient debugging processes.

Another noteworthy characteristic of the HQ-ST Link is its built-in programming and debugging capabilities. With advanced features such as flash programming, boundary scan, and real-time data inspection, developers can identify and rectify issues rapidly, streamlining the development lifecycle. This robustness is significant for minimizing downtime, which can be costly for projects with tight deadlines.

For enhanced performance, the HQ-ST Link integrates seamlessly with various Integrated Development Environments (IDEs), including popular platforms like Keil, IAR, and STM32CubeIDE. This compatibility allows developers to leverage the advanced features of modern IDEs, enhancing productivity and workflow.

Moreover, user-friendly documentation and community support further augment the HQ-ST Link's appeal. Developers can readily access resources and support, which facilitates a smoother learning curve and troubleshooting process. The emphasis on community engagement helps foster innovation as users share tips and techniques.

In summary, the Lava Computer HQ-ST Link combines advanced technology with user-friendly features, making it a powerful tool for embedded systems developers. Its compatibility with multiple microcontroller families, support for various debugging interfaces, fast USB connectivity, and seamless integration with leading IDEs position it as a premier choice in the market for programming and debugging solutions.
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