Touch-sensing firmware library extended, enhanced for microcontrollers

Second-generation STMTouch capacitive sensing firmware library extended and enhanced to increase performance and add support for new STM8 microcontroller families.

01/05/2011


STMicroelectronics has extended and enhanced its STMTouch capacitive touch-sensing firmware library, allowing designers to add advanced user-interface features to applications using 8-bit STM8 microcontrollers.

The second-generation STMTouch firmware now supports over 200 STM8 part numbers, including the advanced STM8S family and the STM8L, featuring ultra low-power EnergyLite technology. Another new feature is support for touch detection via charge-transfer, which delivers high sensitivity and robustness. In addition, simultaneous channel acquisition reduces CPU usage to help designers optimize application features and power consumption. The library also provides improved wheel and slider controls that feature 256-level resolution while using only three microcontroller I/Os as sensor channels.

Touch controls implemented using the STMTouch firmware library occupy a low memory footprint and require minimal use of STM8 peripherals, allowing developers to consolidate user-interface and application tasks in a single device.

“Customers have already achieved some notable product and commercial successes using our first-generation firmware, including Bluetooth headset, PC and printer products,” said Jean-Philippe Dumas, Product Line Marketing Manager, Microcontroller Division, STMicroelectronics. “Our latest enhancements to the STM8 touch sensing firmware library will improve performance and drive further integration of touch-enabled user interfaces in products such as kitchen appliances, mobile devices, multimedia products and professional equipment.”

To complement the enhanced second-generation firmware, the STMTouch development platform adds a new evaluation board supporting the ultra-low-power STM8L family and also features STM Studio software enabling developers to tune touch-sensing parameters. STM Studio is a PC-based tool offering an easy-to-use GUI that provides visual indication of sensor responses. The development platform also features an STM8S evaluation board, as well as the API description, application notes, code examples, and layout recommendations for production boards. C-compiler support has also been expanded, as the latest release is compatible with Cosmic, IAR and Raisonance compilers.

 Major features of the STM8 touch sensing firmware library:

  • Complete library with acquisition, post processing and API layers
  • C source code provided
  • Up to 24 keys and two wheels/sliders supported
  • Support for both charge-transfer and RC-timing touch detection
  • Enhanced processing features for optimized sensitivity and immunity
  • Active shield feature
  • Automatic calibration software
  • Built-in compensation of environmental fluctuations

www.st.com

STMicroelectronics

- Edited by Amanda McLeman, Control Engineering, www.controleng.com



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Strategic outsourcing delivers efficiency; Sleeve bearing clearance; Causes of water hammer; Improve air quality; Maintenance safety; GAMS preview
World-class maintenance: The three keys to success - Deploy people, process and technology; 2016 Lubrication Guide; Why hydraulic systems get hot
Your leaks start here: Take a disciplined approach with your hydraulic system; U.S. presence at Hannover Messe a rousing success
Flexible offshore fire protection; Big Data's impact on operations; Bridging the skills gap; Identifying security risks
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Applying network redundancy; Overcoming loop tuning challenges; PID control and networks
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
Package boilers; Natural gas infrared heating; Thermal treasure; Standby generation; Natural gas supports green efforts

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role that compressed air plays in manufacturing plants.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me