If shows errors also in reading internal ram, it means there is something bad with the SWD connection between onboard stlink and nucleo mcu. Octopart is the world's source for NUCLEO-F401RE availability, pricing, and technical specs and other electronic parts. Libraries 1.9.0 worked fine in my testing but that was quite some time ago. Find the best pricing for STMicroelectronics NUCLEO-F401RE by comparing bulk discounts from 8 distributors. Make sure you follow the Wiki recommendations WRT the Arduino IDE settings for flashing as not doing so can create the exact situation you face. "memory display" is set by default to 0x08000000 (flash), set it to 0x20000000 (internal ram) and size whatever small (like 0x200), does it show memory (it should even if locks are enable in option bytes) or does it still report error? What error? If it shoes data, it means stlink SWD is ok, just messed up with the option bytes. The blue status LED (on the Blackpill F411CE) may or may not come on as its not used as a status LED in this design. NUCLEO-F401RE Description The STM32 Nucleo board provides an affordable and flexible way for users to try out new ideas and build prototypes with any STM32 microcontroller line, choosing from the various combinations of performance, power consumption and features. it tells "can't read memory, disable readout protecion" upon device connect to stlink utility. If you see all the above but unknown flash size, it probbly means you have enabled some locking in option bytes (flash size, if i'm not wrong, is stored somewhare is OTP flash or bootrom, don't remember exactly). One is used for STM which are male pins and the second are female pins used for Arduino. In STM32 Nucleo there are two types of connection pins.
#12kb on nucleo f401re 32 bit
It has an ARM Cortex 32 Bit microcontroller that comes only in a single package LQFP.
does the target cpu gets recognized (top right window)? Do you see Device, dev id, rev id, and flash size (unknown flash size or 512k)? If you see device and dev id, SWD between stlink and mcu is at least working. STM32 Nucleo F401RE is a low cost and quick to use a development board. 1 pcs x NUCLEO F401RE Development Boards & Kits - ARM Nucleo Board.
#12kb on nucleo f401re series
Once you have installed OpenOCD (look here for installation instructions), you can flash the board simply by typing. Documents (1) The STM32 Nucleo-64 development board with STM32F401RE MCU, supports Arduino and ST morpho connectivity provide an affordable and flexible way for users to try out new concepts and build prototypes by choosing from the various combinations of performance and power consumption features, provided by the STM32 microcontroller. STM32F401RE, mbed-Enabled Development Nucleo-64 series ARM Cortex-M4 MCU 32-Bit Embedded Evaluation Board. The easiest way to program the board is to use OpenOCD. Just to restrict the possible issue, i would suggest to open stlink utility and: The ST Nucleo-F401RE board includes an on-board ST-LINK V2 programmer.
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