So, I notice that in plugging in my Nucleo F401RE, that it pops open a file explorer window with the MBED.HTM file and DETAILS.TXT showing in the window. My Nucleo F401RE board running FreeRTOS.LEDs are connected to the I2C bus (white and yellow wires) via MCP23017.Details of the implementation is on my blog. The Zephyr console output is assigned to UART2. Serial Port Nucleo F401RE board has 3 UARTs. By default System clock is driven by PLL clock at 84MHz, driven by 8MHz high speed external clock. Moreover, there is an inbuilt debug interface/debug port and ST-LINK header/V2-1 programmer for memory access and transmissions. ![]() This microcontroller often comes in a single LQFP64 package without a separate probe. I searched the datasheets and the internet but could not find it and I'm not sure how to determine it. Nucleo F401RE System Clock could be driven by internal or external oscillator, as well as main PLL clock. The STM32 Nucleo F401RE development board, for example, comes with an ARM 32-bit cortex microcontroller. Please help The I2C slave testing project is here: Import program I2CSlaveTest mbed OS-5 I2C Slave using Nucleo-F401RE board. I am currently trying to learn I2C communications with two STM32 NUCLEO-F401RE boards and I am having trouble on how to figure out the slave address of the board. An error occurred while uploading the sketch This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. The NUCLEO-F401RE i2c slave always holds down the SCL line forever in middle of the data transfer, which can be viewed clearly by a oscilloscope or a I2C protocol analyzer. Please ensure the device is correctly connected. Global variables use 1044 bytes (1%) of dynamic memory, leaving 97260 bytes for local variables. ![]() I followed them, got the sketch to compile, but I get the error:Īrduino: 1.8.5 (Windows 10), Board: "Nucleo-64, Nucleo F401RE, Mass Storage, Generic Serial, None, Smallest (-Os default)" Archiving built core (caching) in: C:\Users\bjfur\AppData\Local\Temp\arduino_cache_286105\core\core_STM32_stm32_Nucleo_64_pnum_NUCLEO_F401RE,upload_method_MassStorage,xserial_generic,usb_none,opt_osstd_d724efeaa56f34424fff8f97231228d4.a Sketch uses 11064 bytes (2%) of program storage space. Thank you for the clear, complete instructions.
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