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ISR (Interrupt Service Routine) best practices: ⚠️ Keep it short ✅ Avoid delay(), malloc(), printf() 🧵 Offload heavy tasks to main loop ⛓️ Use volatile variables for shared data One bad ISR = system-wide instability #EmbeddedTips #FirmwareDev

🔧 Smooth Button Presses! Use software debouncing to eliminate false triggers and ensure reliable switch inputs in embedded systems. 🚀 #InnotratLabs # IoT #EmbeddedTips #IoT

#EmbeddedTips "gitk" command can be used to get the visual representation of the history of the repository. #embeddedsystem #linux #github #cpp

#Embeddedtips The number x is power of two ( x == 2^n == 1 << n ), if it has only one bit ( nth bit ) is set to 1 . Way to test it is : " x & ( x-1 ) == 0" #embeddedsystem #linux #cpp #IoT #c

#embeddedtips 1. Use "strace" linux command tool to trace the system calls in your project. 2. Use "lstrace" linux command tool to trace the library calls. #embeddedsystem #linux #c #cpp

#Embeddedtips Structure-based fetching of data offers better performance,reliability and maintainbility compared to string based fetching in context of embedded system where efficiency and resource ultilization is critical. #embeddedsystem #Linux #firmaware #cyancore #visorfolks

#Embeddedtips Use " perf c2c record or perf c2c report " i.e. Linux Perf C2C tool to debug false sharing in multithread applications #cpp #cplusplus #linux #embeddedsystem

#EmbeddedTips You can cleanly quit QEMU by pressing Ctrl + A key and then X without Ctrl key #qemu #embeddedsystem #cpp #firmware

#embeddedtips #wireshark provides complete details of packets flows over the #network . If you just want to see if there are any flows, where they go, and which protocol they use, consider a tool called "ntopng". #embeddedsystem #cpp #linux #networking #networksecurity

#EmbeddedTips Use "valgrind --tool=cachegrind ./yourexeprogram" command which uses cachegrind tool to identify areas of code that might be causing inefficient cache usage, allowing for optimization . #embeddedsystem #linux #cpp #c #firmware #IoT

#embeddedtips 1. Use "ext2ls mmc 0" command which is the equivalent of running "ls" on the SD card’s filesystem. #linux #firmware

#EmbeddedTips 1. Use "ping DNS/IP address" command line utility to troubleshoot networking issues. 2. Use " tracert DNS/IP address" command line utility to ping each router on its way to destination. #networking #networksecurity #embeddedsystem #InternetOfThings

#EmbeddedTips 1. Use "bt" ( backtrace ) command while using #gdb debug tool to backtrack the stack. 2. Use "full" command while using #gdb tool to show the local variables contained in each stack frame. #embeddedsystem #IoT #c #cpp #Debugging

#EmbeddedTips The GNU development tool to examine compiled binaries -> objdump Syntax -> objdump -M intel -D a.out ( your binary file ) #embeddedsystem #Embedded #IoT #firmware

#embeddedtips You can only manage what you measure! What metrics and trends do you need to start measuring to improve your chances for success? #embedded #embedsys #MCUs #microcontrollers #embeddedsoftware #cprogramming

#embeddedtips 100% Code Coverage does NOT mean 100% bug free! #embedsys #embedded #Arm #cprogramming #cplusplus #TDD

#embeddedtips If you are "doing #Agile" you still need to take time up front to design your software. Otherwise, you'll end up with a big ball of mud! #MCUs #microcontrollers #embedsys #Arm #RTOS

#embeddedtips Consider using pair programming to augment the time spent for code reviews. #MCUs #Agile #microcontrollers #embedsys #Arm

#embeddedtips Use assert to verify interface pre and post conditions like in Design-by-Contract! #MCUs #microcontrollers #Arm #RTOS

#embeddedtips Use a Threat Model and #Security Analysis (#TMSA) to dictate requirements for #microcontroller selection. #secure #arm #MCUs #embedsys

ISR (Interrupt Service Routine) best practices: ⚠️ Keep it short ✅ Avoid delay(), malloc(), printf() 🧵 Offload heavy tasks to main loop ⛓️ Use volatile variables for shared data One bad ISR = system-wide instability #EmbeddedTips #FirmwareDev

#embeddedtips 100% Code Coverage does NOT mean 100% bug free! #embedsys #embedded #Arm #cprogramming #cplusplus #TDD

#embeddedtips With the #ESP32, avoid the Arduino IDE! Use Visual Studio Code (#VCS) with the #ESP-IDF plug-in! #firmware #embedsys #embedsys #RTOS

#embeddedtips Use a memory protection unit (#MPU) to break you #RTOS tasks and memory into processes. #firmware #arm #microcontrollers #MCUs

#embeddedtips In a baremetal environment, use interrupts to simulate preemption (if needed). #firmware #embedsys #microcontrollers #MCUs #RTOS

#embeddedtips Break your #embedsys architecture in two; a business layer and real-time layer. #firmware #RTOS #CPP #micocontrollers #Arm

#embeddedtips Use a Threat Model and #Security Analysis (#TMSA) to dictate requirements for #software architecture design. #Arm #embedsys #firmware #RTOS #microcontroller

#embeddedtips Consider using pair programming to augment the time spent for code reviews. #MCUs #Agile #microcontrollers #embedsys #Arm

#embeddedtips In a conditional statement, use RVALUE == LVALUE to catch accidental assignment bugs. i.e. if(10 == Var1) {} NOT if(Var1 == 10){} #microcontrollers #MCUs #embedsys #CPP #Arm #RTOS

#embeddedtips Use assert to verify interface pre and post conditions like in Design-by-Contract! #MCUs #microcontrollers #Arm #RTOS

#embeddedtips Use the #MPU (Memory Protection Unit) to create additional isolation layers in #microcontroller #firmware to further improve #security. #firmware #MCUs #microcontroller #embedsys #Arm #RTOS

#embeddedtips Group your tasks and shared memory into processes to improve your system robustness. #firmware #Arm #microcontroller #embedsys #RTOS

#embeddedtips For systems with complex timing requirements, an #RTOS should be the default solution! #firmware #embedsys #embedded #Arm

#embeddedtips Always measure your #RTOS tasks min, avg, and max execution times! Ask if they meet your Rate Monotonic Analysis (RMA) #RTOS #Arm #firwmare #embedsys

#embeddedtips #Secure systems are achieved through isolation. Develop layers of #Hardware and #software based isolation to improve #security. #embedded #embedsys #microcontroller #Arm

#embeddedtips If you are "doing #Agile" you still need to take time up front to design your software. Otherwise, you'll end up with a big ball of mud! #MCUs #microcontrollers #embedsys #Arm #RTOS

#embeddedtips Become an expert at managing expectations! A successful project can be seen as a failure if expectations aren’t managed properly. #embedsys #Arm #microcontrollers #firmware

#embeddedtips When a parameter is forced on you that you won't use, but will generate a compiler warning, remove it with a macro like: #define UNUSED(x) ((void)x) or just add a statement like: (void)x; #embedsys #embedded #Arm #embeddedsoftware #MCUs #microcontrollers

#embeddedtips You can only manage what you measure! What metrics and trends do you need to start measuring to improve your chances for success? #embedded #embedsys #MCUs #microcontrollers #embeddedsoftware #cprogramming

#embeddedtips Expand your knowledge, talk to industry experts next week by attending the Embedded Online Conference! embeddedonlineconference.com #firmware #Arm #microcontroller #embedsys