Monthly Archives: October 2018

Vulnerabilities Discovered in FreeRTOS TCP/IP Stack 😮

A researcher has discovered multiple flaws in the FreeRTOS TCP/IP stack: https://thehackernews.com/2018/10/amazon-freertos-iot-os.html. Amazon/FreeRTOS quickly patched the problems, but that’s not the end of the story. As more and more “Internet of Things” devices come onto the market, the existence of exploitable … Continue reading

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Dynamic Memory and REXIS

According to some coding guidelines such as MISRA, it is “common wisdom” that embedded firmware should not use dynamic memory, e.g. malloc/free, as it introduces non-deterministic behaviors. Many firmware engineers have taken this to heart.  So is it surprising that … Continue reading

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Interrupt Handlers and Tasks in REXIS

REXIS is both ImageCraft’s RTOS and a component of the JumpStart IoT Connectivity Suite. It’s easy to use and also supports multiple APIs for IPC (Inter-Process Communication). In this post, we aim to show how easy it is to write … Continue reading

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JumpStart C++ for Cortex Semihosting

JumpStart C++ for Cortex’s built-in debugger now supports semihosting. Your firmware can now use printf calls for diagnostic output without tying up a serial port.

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Firmware Security

Most modern MCU have some kind of readout protection of the flash. Unfortunately, there’s only the minimal level of protection of your firmware IP. The TL;DR version is that serious crackers can etch the physical shielding off, and then read … Continue reading

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Embedd.com Reviews Our Book “C for Everyone”

Check it out! https://www.embedded.com/electronics-blogs/break-points/4442163/C-For-Everyone

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JumpStart C++ for Cortex 9.05.00 Released

We now support semihosting! http://imagecraft.com/download/demo-softwaredirect download link: https://imagecraft.com/pub/iccv9cortex_demo.exe 9.05.00 2018/10/04– IDE and JDB DebuggerAdded Semihosting support. This redirects printf calls when the program is under debugger control to the ADT’s semihosting output window. See help file for detail.– IDEEnabled support … Continue reading

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