J-Link debug probes are the most popular choice for optimizing the debugging and flash programming experience. Benefit from record-breaking flash loaders, up to 4 MB/s RAM download speed and the ability to set an unlimited number of breakpoints in the flash memory of MCUs.
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J-Link supports directly interfacing SPI flashes, without the need of a CPU between J-Link and the SPI flash (directly communicating via the SPI protocol). J-Link is further supported by all major IDEs, from free Eclipse-based ones (directly or via GDB) up to commercial ones, including SEGGER Embedded Studio. See a complete list of supported IDEs here, a complete list of supported devices here and a list of SPI Flashes here.
J-Link makes Flash memory feel almost like RAM. Since it comes with a set of speed-optimized, built-in flash loaders it can easily and quickly be downloaded into flash memory. Take a look below to find out more information.
Note: OpenOCD is a 3rd party software, so SEGGER cannot provide any guarantees etc. Using J-Link with OpenOCD bypasses all J-Link specific features like flash programming, unlimited flash breakpoints and the J-Link high debugging speed. OpenOCD will handle J-Link as a simple sequence generator which will affect debug performance. Please also note that using J-Link with OpenOCD is not covered by the standard J-Link support. Support for OpenOCD is provided by the OpenOCD community.
The Flasher ARM is used to program the non-volatile memories of Arm-based microcontrollers and Systems-on-a-Chip (SoCs) as well as external flashes like (Q)SPI flashes that are directly connected to the microcontroller. It can be used in stand-alone or PC-based mode and connects via USB, Ethernet or an RS232 interface. Like the Flasher PRO, it has a 20-pin connector, which is compatible with the standard 20-pin JTAG connector defined by Arm. Various adapters are available.
This concept makes it possible to adapt to almost any system for ISP programming purposes. Dedicated flash loaders, which can be easily downloaded to the programmer, make it possible to program almost any device. This flexibility allows using the debug or dedicated programming interfaces of microcontrollers to program the on-chip memories as well as the programming of the off-chip parallel or (Q)SPI flashes. (Q)SPI can also be programmed directly.
Multi-bank programming support describes the possibility to program different flash devices, present on the same hardware, in one Flash programming session. For example, if you want to use the internal flash of your target hardware as well as the external flash for the target application code, multi-bank programming enables you to download the target application into the internal and external flash in one flash programming session.
Other features of J-FlashLet us go quickly through other things you can do with J-Flash ARM. Almost all fun can accessed through the Target menu:Here you can see a Test function where you can test programming and reading speed. Here are my test results:Also, you can secure or un-secure chip, check blank, fill flash memory with zeros, erase the chip, verify, and so on. These are essential functions that you would expect from a programmer adapter. 2ff7e9595c
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