Learning C and the C stdlib library was something I did on my own. Brian Kernighan and Dennis Ritchie's The C Programming Language was something I read while in France on a project in 1981. It was simple, concise and easily digested. Plus, it kept my mind off French baguettes. Reading it did not turn me into a good C programmer, but it laid the foundation. Oh, did I just say that I was a good C programmer. My bad! To show my hubris and shallowness, a short while later a friend asked me to help him debug a C program he had written for the PC. He was brand new to C and I was just "new without the brand" to the language. I confidently told him that, with the debugger, we would find the problem in less than a half hour. Four hours later, I was stumped. The problem was that he allocated very large variables on the stack and blew his default stack away every time he used these variables. But like all stack problems, it was very non-deterministic. The debugger was worthless in debugging that. I had not quite mastered memory allocation.
Now, 45 years later, learning React Native is not done by reading one book. The number of components and the intricacies of JavaScript are significantly more complex than C and its standard library. Add to that the React Native components and I found that I needed a serious course. For example, there are less than 50 functions in most stdlib C libraries. Although there are only 24 core components for React Native, each one is probably 10-20 times more complex than each C library function. Add to that the thousands of community supported components and you will understand the complexity.
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Diese Geschichte stammt aus der September 2024-Ausgabe von Circuit Cellar.
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New TI MCUs Enable Edge AI and Industry-Leading Real-Time Control to Advance Efficiency, Safety, and Sustainability
Texas Instruments (TI) introduced two new series of real-time microcontrollers that deliver advancements to help engineers achieve more intelligent and secure processing in automotive and industrial applications.
Using Amazon Alexa to Control Custom IoT Gadgets
In part two of his article, Brian describes integrating custom IoT gadgets with Amazon Echo using emulation to receive spoken alarms. In part one, he used emulation and Arduino Cloud services as a middleman.
Holiday Hangover Hardware Hacking
Having too much cheer during the holidays? In this month's article, Colin offers a diversion from the jolly season by urging developers to retreat to the basement to brush up on hardware hacking skills. He shows how a low-cost Raspberry Pi Pico and a TP-Link Tapo C200 smart IP camera could become the next automated bird deterrent or a home automation server.
Datasheet: Microamps Per Megahertz Ultra-Low Power MCUs Minimize Current Consumption
How do chip makers differentiate if many ultra-low power MCUs on the market feature the same processor core? The peripherals and different power states offer various ways to manage current consumption down to microamps per megahertz.
Smart Home Lock Down Matter Provides Security Blanket
As more devices in the smart home connect to the Internet, they become increasingly vulnerable to outside attacks. Developers can now add the latest security measures to their Smart Home devices through Matter.
Basic Pulse Circuits
In part one of a three-part series, Wolfgang wrote how basic pulse circuits help digital circuits, such as embedded boards with ARM processors, deal with pulse trains or bursts of pulses from the outside. In Part 2, he dives into enabling flip-flops, timing parameters, and synchronization, design tasks needed to capture, detect, and filter pulses.
Building a Wi-Fi Router Watchdog
Dev created a watchdog for a Wi-Fi extender using a Raspberry Pi Pico. This monitors Wi-Fi connectivity for his smart home lighting system, which would require a reset twice a year due to rapid power interruptions.
Create Your Own PCBs with a CNC Milling Machine
Using KiCad, CopperCAM, and Candle Software
Performance Bottlenecks in Embedded Linux Solutions Analysis, Identification, and Mitigation
Good performance is a requirement for every technology, and system designers rely on operating systems to ensure fast and smooth transitions in critical applications. Fortunately, Pedro writes, the embedded Linux OS offers ways for finding, analyzing and mitigating performance bottlenecks so embedded systems can deliver the speed and efficiency that end users expect.
Renesas New RA8 Entry-Line MCU Groups Brings High Performance of Arm Cortex-M85 Processor to Cost-Sensitive Applications with Market-Leading CoreMark Performance
Renesas Electronics Corp., a premier supplier of advanced semiconductor solutions, introduced the RA8E1 and RA8E2 microcontroller (MCU) groups, extending the industry's most powerful series of MCUs.
