More and more embedded systems rely on the use of Real-Time Operating Systems (RTOSs) to: satisfy real-time requirements, reduce time-to-market, simplify development, increase code portability, and simplify development. Despite its many benefits, an RTOS also has its drawbacks, such as introducing improperly assigned task priorities, stack overflows, starvation, deadlocks, priority inversions and other hard-to-find bugs.

In these three articles published on Embedded Computing Design, Jean Labrosse, distinguished engineer at Silicon Labs and Micrium founder, will look at tools specifically designed to help RTOS-based application developers uncover some of these elusive bugs, identify issues and offer corrective actions. These tools are readily available yet often unknown to embedded developers.

1. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 1
2. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 2
3. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 3

More and more embedded systems rely on the use of Real-Time Operating Systems (RTOSs) to: satisfy real-time requirements, reduce time-to-market, simplify development, increase code portability, and simplify development. Despite its many benefits, an RTOS also has its drawbacks, one of which is the possibility of introducing improperly assigned task priorities, stack overflows, starvation, deadlocks, priority inversions and other hard-to-find bugs.

In these three articles published on Embedded Computing Design, Jean Labrosse, distinguished engineer at Silicon Labs and Micrium founder, will look at tools specifically designed to help RTOS-based application developers uncover some of these elusive bugs, identify issues and offer corrective actions. These tools are readily available yet often unknown to embedded developers.

1. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 1
2. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 2
3. Uncovering Real-Time Bugs with Specialized RTOS Tools - Part 3

Wireless technology plays a major part in the Internet of Things (IoT) but deploying this technology can involve a good bit of programming. Applications must address a range of issues including features like secure over-the-air (OTA) updates.

In this Q&A, Silicon Labs’ senior product manager for Xpress devices Parker Dorris discusses some of the questions that come up when talking about the programming burden of wireless applications.

What are some wireless IoT applications that Silicon Labs is targeting?

We’re targeting Bluetooth Low Energy-enabled sensors, smartphone-controlled smart home devices, white goods, and machine-to-machine applications, especially those requiring the additional option of phone configuration and connectivity. We’re already seeing an extremely diverse mix of applications evaluating and developing with these zero-programming IoT solutions, and the common theme in these designs is a need for wireless connectivity without the steep learning curve. The wireless component just works, which enables companies to focus resources on the aspects of a design that will make the product innovative and successful
in the market.

What is zero-programming, and why is it important to IoT developers?

The goal of our Wireless Xpress portfolio is to lower the barriers of entry for IoT end node design by providing easy to use hardware and software solutions that require zero-programming. These Wireless Xpress module products are all about enablement in a few key respects.

First, because a developer is interfacing with Wireless Xpress through a high-level network coprocessor (NCP)-style interface called the Xpress command API, and communicating with a device that takes on as much responsibility for wireless connection and communication as possible, developers don’t have to become Bluetooth or Wi-Fi experts to get to market quickly.

While you don’t have to write code for these module devices, we expose configurable parameters to tweak performance features. Developers don’t have to learn the intricacies of stack APIs and getting a module to some configured state; they just set a variable. This command API feature helps developers avoid some of the more common challenge points that can snag developers new to a wireless protocol.

Wireless Xpress takes advantage of Silicon Labs’ Gecko OS, an intuitive, simple-to-use IoT operating system. Wireless Xpress devices also focus on enablement in the sense that because the device handles wireless-related responsibilities so comprehensively with the Gecko OS firmware running under the hood, developers don’t have to choose an MCU that will be able to handle low-level wireless maintenance, or granular monitoring through a lower-level NCP protocol. Developers can choose the MCU that’s right for their application, rather than choosing the MCU that’s right for their NCP.

What hardware platforms does Silicon Labs offer for IoT end node designs?

We’ve launched Bluetooth Xpress modules in PCB module and system-in-package (SiP) module options, called BGX13P and BGX13S, respectively. We also offer two zero-programming Wi-Fi Xpress modules, the AMW007 and AMW037.

What is involved on the software side to get a mobile app running?

For Bluetooth Xpress, we’ve launched the Xpress framework for both iOS and Android. Developing mobile apps can sometimes be a challenge for product developers, and developing a BLE-connected app is its own specialized skillset. With the Xpress framework, we abstract low-level mobile OS core Bluetooth APIs behind a few easy-to-use APIs.

This is really helpful to developers for two reasons. First, the Xpress framework handles all the Bluetooth-specific scanning and discovery, interrogation, connection and GATT table communication. For instance, to scan, you call startScan, and the framework delivers a list of discovered devices. To connect, you call connectToDevice, and the framework handles the rest.

Second, the framework looks largely the same for both iOS and Android, unifying an interface that really works quite differently between the two OSes. So if a developer learns to connect to Bluetooth Xpress in iOS, those same function calls are going to work identically in Android. For Wi-Fi Xpress, we’re offering a web app that is served by a Wi-Fi Xpress device and provides a RESTful API to control the module and access a file system.

What type of tools are available to developers to take advantage of Wireless Xpress?

One great thing about these module products is that the Xpress command API is human-readable, and so developers can evaluate the product and fully exercise features with a simple terminal program running on a PC.

We’ve launched two evaluation kits, the Wireless Xpress BGX13P kit and the AMW007-E04 kit, each offering a serial to USB bridge so access to the board looks like a COM port. For developers that want a more context-rich evaluation experience and a graphical interface, we offer the Xpress Configurator tool in Silicon Labs’ Simplicity Studio development environment. Xpress Configurator logically groups different configurable parameters, validates configurable settings, and displays documentation for each parameter. All of this configuration results in one or more Xpress commands getting sent to the Wireless Xpress module through a terminal interface built into the tool.

Developers have access to network management and mapping tools. The tools provide a high-level view of the system. The network analyzer tracks wireless node activity in real time proving insights for debugging and system optimization.

What about connecting to the cloud?

For Bluetooth Xpress, we offer over the air (OTA) support through the Xpress framework. If Silicon Labs releases a firmware update to Bluetooth Xpress, this signed, encrypted update can be pulled from our cloud with a single framework API. Wi-Fi Xpress products can access the cloud directly to receive firmware updates. Developers can also use this built-in cloud connectivity to perform device health checks in the field and retrieve other key, application specific metrics as well.

Wireless technology plays a major part in the Internet of Things (IoT) but deploying this technology can involve a good bit of programming. Applications must address a range of issues including features like secure over-the-air (OTA) updates.

In this Q&A, Silicon Labs’ senior product manager for Xpress devices Parker Dorris discusses some of the questions that come up when talking about the programming burden of wireless applications.

What are some wireless IoT applications that Silicon Labs is targeting?

We’re targeting Bluetooth Low Energy-enabled sensors, smartphone-controlled smart home devices, white goods, and machine-to-machine applications, especially those requiring the additional option of phone configuration and connectivity. We’re already seeing an extremely diverse mix of applications evaluating and developing with these zero-programming IoT solutions, and the common theme in these designs is a need for wireless connectivity without the steep learning curve. The wireless component just works, which enables companies to focus resources on the aspects of a design that will make the product innovative and successful
in the market.

What is zero-programming, and why is it important to IoT developers?

The goal of our Wireless Xpress portfolio is to lower the barriers of entry for IoT end node design by providing easy to use hardware and software solutions that require zero-programming. These Wireless Xpress module products are all about enablement in a few key respects.

First, because a developer is interfacing with Wireless Xpress through a high-level network coprocessor (NCP)-style interface called the Xpress command API, and communicating with a device that takes on as much responsibility for wireless connection and communication as possible, developers don’t have to become Bluetooth or Wi-Fi experts to get to market quickly.

While you don’t have to write code for these module devices, we expose configurable parameters to tweak performance features. Developers don’t have to learn the intricacies of stack APIs and getting a module to some configured state; they just set a variable. This command API feature helps developers avoid some of the more common challenge points that can snag developers new to a wireless protocol.

Wireless Xpress takes advantage of Silicon Labs’ Gecko OS, an intuitive, simple-to-use IoT operating system. Wireless Xpress devices also focus on enablement in the sense that because the device handles wireless-related responsibilities so comprehensively with the Gecko OS firmware running under the hood, developers don’t have to choose an MCU that will be able to handle low-level wireless maintenance, or granular monitoring through a lower-level NCP protocol. Developers can choose the MCU that’s right for their application, rather than choosing the MCU that’s right for their NCP.

What hardware platforms does Silicon Labs offer for IoT end node designs?

We’ve launched Bluetooth Xpress modules in PCB module and system-in-package (SiP) module options, called BGX13P and BGX13S, respectively. We also offer two zero-programming Wi-Fi Xpress modules, the AMW007 and AMW037.

What is involved on the software side to get a mobile app running?

For Bluetooth Xpress, we’re launching the Xpress framework for both iOS and Android. Developing mobile apps can sometimes be a challenge for product developers, and developing a BLE-connected app is its own specialized skillset. With the Xpress framework, we abstract low-level mobile OS core Bluetooth APIs behind a few easy-to-use APIs.

This is really helpful to developers for two reasons. First, the Xpress framework handles all the Bluetooth-specific scanning and discovery, interrogation, connection and GATT table communication. For instance, to scan, you call startScan, and the framework delivers a list of discovered devices. To connect, you call connectToDevice, and the framework handles the rest.

Second, the framework looks largely the same for both iOS and Android, unifying an interface that really works quite differently between the two OSes. So if a developer learns to connect to Bluetooth Xpress in iOS, those same function calls are going to work identically in Android. For Wi-Fi Xpress, we’re offering a web app that is served by a Wi-Fi Xpress device and provides a RESTful API to control the module and access a file system.

What type of tools are available to developers to take advantage of Wireless Xpress?

One great thing about these module products is that the Xpress command API is human-readable, and so developers can evaluate the product and fully exercise features with a simple terminal program running on a PC.

We’ve launched two evaluation kits, the Wireless Xpress BGX13P kit and the AMW007-E04 kit, each offering a serial to USB bridge so access to the board looks like a COM port. For developers that want a more context-rich evaluation experience and a graphical interface, we offer the Xpress Configurator tool in Silicon Labs’ Simplicity Studio development environment. Xpress Configurator logically groups different configurable parameters, validates configurable settings, and displays documentation for each parameter. All of this configuration results in one or more Xpress commands getting sent to the Wireless Xpress module through a terminal interface built
into the tool.

Developers have access to network management and mapping tools (Fig. 2). The tools provide a high-level view of the system. The network analyzer tracks wireless node activity in real time proving insights for debugging and system optimization.

What about connecting to the cloud?

For Bluetooth Xpress, we offer over the air (OTA) support through the Xpress framework. If Silicon Labs releases a firmware update to Bluetooth Xpress, this signed, encrypted update can be pulled from our cloud with a single framework API. Wi-Fi Xpress products can access the cloud directly to receive firmware updates. Developers can also use this built-in cloud connectivity to perform device health checks in the field and retrieve other key, application specific metrics as well.

In a 45-minute webinar, Jean Labrosse explains everything you need to know about an RTOS. An RTOS is software that manages time and resources of a CPU. RTOSs are practically used in almost every embedded and IoT system.

Click here to register: https://register.gotowebinar.com/register/3924613694856300300?source=BE-Web 

About Jean Labrosse: 

Jean Labrosse is a software architect at Silicon Labs. Labrosse, an RTOS expert who founded Micrium in 1999, is a regular speaker and panelist at the Embedded Systems Conference in Boston and Silicon Valley, and other industry conferences. He is the author of three definitive books and many blogs and articles on embedded design. He holds BSEE and MSEE degrees from the University of Sherbrooke, Quebec, Canada.

Title: Develop Secure, Interoperable Smart Home Devices with Z-Wave

Date: July 11 & 12, 2018

Duration: 1 hour

Speaker: Johan Pedersen, Product Marketing Manager of Z-Wave

Topic:  Z-Wave is a popular wireless technology for smart home applications with a large ecosystem of interoperable devices, such as smart lighting, energy monitoring, and home security systems. Consumers benefit from Z-Wave’s ease of use and secure interoperability thanks to mandatory product certification and features including SmartStart plug-and-play installation, Security 2 (S2), and backwards compatibility. Adding Z-Wave connectivity to your product is straightforward due to clearly defined software stacks, published device profiles, pre-certified modules, a finished product certification program and development tools that ensure high-quality products get to market fast.

In this webinar, we explore how Z-Wave wireless technology enables easy-to-use, secure, and interoperable products for the smart home market.

Title: Why the IoT Needs Upgradable Security

Date: May 9 & 10, 2018

Duration: 1 hour

Speaker: Lars Lydersen, senior director of product security at Silicon Labs

In this webinar, Lars Lydersen, senior director of product security at Silicon Labs, delves into the historical data of how adversary capability has evolved, and discusses how these can be extrapolated into the future. This understanding gives a necessary background to evaluate what security functionality is necessary in an IoT design. Even with advanced security functionality, there will always be unknown unknowns, and it will be necessary to secure against attacks and adversaries of the future. Lars will also discuss the typical properties of an attack that can be thwarted via updates, why enabling software updates is needed, and the consequences for IoT designs.

This webinar is now available to view on-demand. If you have any questions regarding the content, please post them here in our community.

Title: Benchmarking Bluetooth Mesh, Thread, and Zigbee Network Performance

Date: June 13 & 14, 2018

Duration: 1 hour

Speaker: Tom Pannell, senior director of marketing for IoT products at Silicon Labs

When it comes to mesh networking wireless connectivity, one size does not fit all. Bluetooth, Thread, and Zigbee protocols each present unique advantages depending on the use case, and it’s important to understand how they perform in the key areas of power consumption, throughput, and scalability. The inner workings of these mesh networking technologies goes beyond a list of key features and Silicon Labs has released the industry’s first comprehensive network performance results based on large-scale, multicast testing of each of these stacks.

In this webinar Tom Pannell, senior director of marketing for IoT products, will provide an overview of this benchmarking and discuss how developers can make more informed choices when designing products for the IoT.

Title: Benchmarking Bluetooth Mesh, Thread, and Zigbee Network Performance

Date: June 13 & 14, 2018

Duration: 1 hour

Speaker: Tom Pannell, senior director of marketing for IoT products at Silicon Labs

When it comes to mesh networking wireless connectivity, one size does not fit all. Bluetooth, Thread, and Zigbee protocols each present unique advantages depending on the use case, and it’s important to understand how they perform in the key areas of power consumption, throughput, and scalability. The inner workings of these mesh networking technologies goes beyond a list of key features and Silicon Labs has released the industry’s first comprehensive network performance results based on large-scale, multicast testing of each of these stacks.

In this webinar Tom Pannell, senior director of marketing for IoT products, will provide an overview of this benchmarking and discuss how developers can make more informed choices when designing products for the IoT.

Title: Why the IoT Needs Upgradable Security

Date: May 9 & 10, 2018

Duration: 1 hour

Speaker: Lars Lydersen, senior director of product security at Silicon Labs

In this webinar, Lars Lydersen, senior director of product security at Silicon Labs, delves into the historical data of how adversary capability has evolved, and discusses how these can be extrapolated into the future. This understanding gives a necessary background to evaluate what security functionality is necessary in an IoT design. Even with advanced security functionality, there will always be unknown unknowns, and it will be necessary to secure against attacks and adversaries of the future. Lars will also discuss the typical properties of an attack that can be thwarted via updates, why enabling software updates is needed, and the consequences for IoT designs.

Join our webinar and get your questions answered by our experts during the live Q&A session at the end.