Embedded Software Insight
In this first article, we’ll go over some important considerations to keep in mind when using a NOR for code shadowing or execute in place, and explain how these considerations may change when using the NOR for data storage with a file system. Then we’ll take a quick look at the hardware characteristics of QSPI NOR devices.
In-depth comparison between NOR and NAND covering aspects of NOR and NAND flash technologies that, in our view, are too often ignored including the impact of the application requirements on the choice of Flash technology.
Let’s explore and compare two different paradigms of flash management commonly used throughout the industry: managed flash and unmanaged flash. Managed flash devices include SD cards, USB flash drives, eMMC and UFS modules — also SSDs, but those are less often seen in embedded systems. These are all NAND-based devices.
This article is the first of an introduction series about flash memory with a focus on embedded systems designs using an embedded file system. A high-level introduction shall we say. Not the kind that takes you straight to the electron and drags you through the depths of quantum physics. No. The purpose of this series
In this article we’ll look at the last step of setting up a C/C++ embedded development project within Eclipse CDT. Which is creating and launching a debug configuration for the project. The kind of project managed or Makefile base does not affect the debugging process so these instructions applies to both types of projects.
In this article, we show that TSFS transactions go beyond preserving file-level integrity, and can also be used to enforce coherence across multiple files and directories. To support the discussion, we present a real-life application example and demonstrate how a single additional call to tsfs_commit() is all that is needed to make the code immune to unexpected failures.
In this second article in this series we see how an application can be designed to withstand such unforeseen events, using TSFS transactions. Doing so, we introduce the tsfs_commit() API. We also discuss the write transaction atomicity property, by which applications can be safely designed ignoring potential partial update issues.
This is the first article of a three-part series on fail-safe, storage-related application design using an embedded file system. The first part of the series lays out the fundamental problem of unexpected failures and briefly discusses partial solutions. The second part introduces how a fail-safe transactional file system such as the TREEspan File System (TSFS)
Last week was one of pride and excitement for the JBLopen’s development team as we released our latest product, the TREEspan File System (TSFS). After the official announcement and presentation, we feel the need to introduce the newcomer in a more personal way, such as we see it from the inside. Above all, we would
Following the last article on core performance this article looks at the MicroBlaze memory bandwidth and access latency. Within the article benchmarks results are presented and discussed for various configuration of the MicroBlaze memory sub system such as local memory, AXI blobk RAM and external SDRAM memory.
In this third part of the series on setting up a bare-metal GCC toolchain in Eclipse we look at Makefile projects. A Makefile project, is more complicated to setup but offers greater control and flexibility over the build process. A Makefile based project is also independent of Eclipse and can be built and maintained easily outside of Eclipse which can be useful for automated builds.
Following the success of the MicroBlaze configuration guide this article looks at core performance benchmarks of the Xilinx MicroBlaze using the EEMBC CoreMark benchmark. Like the previous article series, this article looks at various memory hierarchy configurations including local and external DDR memory and their impact on core performance.
In this first article, we’ll go over some important considerations to keep in mind when using a NOR for code shadowing or execute in place, and explain how these considerations may change when using the NOR for data storage with a file system. Then we’ll take a quick look at the hardware characteristics of QSPI NOR devices.
In-depth comparison between NOR and NAND covering aspects of NOR and NAND flash technologies that, in our view, are too often ignored including the impact of the application requirements on the choice of Flash technology.
Let’s explore and compare two different paradigms of flash management commonly used throughout the industry: managed flash and unmanaged flash. Managed flash devices include SD cards, USB flash drives, eMMC and UFS modules — also SSDs, but those are less often seen in embedded systems. These are all NAND-based devices.
This article is the first of an introduction series about flash memory with a focus on embedded systems designs using an embedded file system. A high-level introduction shall we say. Not the kind that takes you straight to the electron and drags you through the depths of quantum physics. No. The purpose of this series
In this article we’ll look at the last step of setting up a C/C++ embedded development project within Eclipse CDT. Which is creating and launching a debug configuration for the project. The kind of project managed or Makefile base does not affect the debugging process so these instructions applies to both types of projects.
In this article, we show that TSFS transactions go beyond preserving file-level integrity, and can also be used to enforce coherence across multiple files and directories. To support the discussion, we present a real-life application example and demonstrate how a single additional call to tsfs_commit() is all that is needed to make the code immune to unexpected failures.
In this second article in this series we see how an application can be designed to withstand such unforeseen events, using TSFS transactions. Doing so, we introduce the tsfs_commit() API. We also discuss the write transaction atomicity property, by which applications can be safely designed ignoring potential partial update issues.
This is the first article of a three-part series on fail-safe, storage-related application design using an embedded file system. The first part of the series lays out the fundamental problem of unexpected failures and briefly discusses partial solutions. The second part introduces how a fail-safe transactional file system such as the TREEspan File System (TSFS)
Last week was one of pride and excitement for the JBLopen’s development team as we released our latest product, the TREEspan File System (TSFS). After the official announcement and presentation, we feel the need to introduce the newcomer in a more personal way, such as we see it from the inside. Above all, we would
Following the last article on core performance this article looks at the MicroBlaze memory bandwidth and access latency. Within the article benchmarks results are presented and discussed for various configuration of the MicroBlaze memory sub system such as local memory, AXI blobk RAM and external SDRAM memory.
In this third part of the series on setting up a bare-metal GCC toolchain in Eclipse we look at Makefile projects. A Makefile project, is more complicated to setup but offers greater control and flexibility over the build process. A Makefile based project is also independent of Eclipse and can be built and maintained easily outside of Eclipse which can be useful for automated builds.
Following the success of the MicroBlaze configuration guide this article looks at core performance benchmarks of the Xilinx MicroBlaze using the EEMBC CoreMark benchmark. Like the previous article series, this article looks at various memory hierarchy configurations including local and external DDR memory and their impact on core performance.