![]() This is with a simple polled SPI library, not DMA. I now have a new, not SdFat, file system library running well enough to do a first benchmark. Dispone di Core ARM Cortex M4 con FPU a 84 MHz, 512 kB di memoria flash, 96 kB di SRAM, connettori per ospitare la maggior parte degli shield Arduino Uno Rev3, connettori per Morpho. I am using a stock Adafruit data logging shield. Nucleo-F401RE è una scheda elettronica mbed basata sul microcontrollore ad alte prestazioni STM32F401RET6 della STMicroelectronics. Wow! The NUCLEO-F401RE is really fast with just polled SPI. Its three 12-bit ADCs can run in interleaved mode to digitize a signal at up to 7.2 MSPS.Įdit: Just checked and Future electronics now sells the 32F429IDISCOVERY for $24.00, about the same as an Uno. The external SRAM has a 16-bit data bus and runs at 80 MHz. 256 KB internal RAM, 8 MB external SRAM, 2 MB flash, 180 MHz clock, 2.4" TFT touch screen. I also bought a 32F429IDISCOVERY board for $33.60. 4-bit SDIO should be very fast since it should run at 50 MHz. I plan to support SD on SPI, SD on 4-bit SDIO, and USB flash drives. I have almost finished porting a new FAT32/FAT16/FAT12 generic file system to the STM32. The 12-bit ADC seems to be very accurate. I have tested the ADC on these boards and it is at least 50 times faster than the Uno, 2.4 MSPS. ![]() There are three SPI controllers, three I2C controllers, and three UARTs. It is faster, 100 MHz, has more SRAM, 128 KB, and 512 KB of flash. There is a new NUCLEO-F411RE ($10.33 from Future Electronics). This does not interrupt the connection to the serial monitor since there is a second STM32F103 that handles the serial monitor, programming flash, and debug. NUCLEO-F401RE Affordable and flexible platform to ease prototyping using a STM32F401RET6 microcontroller. I now program flash by drag and drop of the apps. I continue to be pleased with the Nucleo boards. STM Studio reads data through the ST-Link SWD debug port so it does not interfere with the real-time behavior of applications. STMStudio reads the elf file generated by the linker to find and displays variables in real-time. ![]() Several people have posted Makefiles templates to build projects generated by STM32CubeMX. I have a STM32F401 board and I was able to flash a keyboard firmware successfully via USB DFU by pressing boot0 and pressing/releasing reset buttons available on the board itself. STM32CubeMX creates a project with the generated start-up code and copies needed library code to the project. The power-consumption wizard estimates the application's power usage. The peripherals-and-middleware wizard aids configuration to avoid unusable settings. The user interface is a diagram of the clock tree and you just edit this diagram. The clock-tree wizard assigns clocks and performs dynamic validation. The STM32CubeMX pin-out wizard assists pin assignment to avoid conflicts and has a constraints solver. STM32CubeMX is a graphical configuration tool that automates configuration and generation of STM32 initialization C code. STM32CubeMX - STM32Cube initialization code generator - STMicroelectronics STM32CubeMX is a big improvement over previous ST configuration tools. I have started using STM32CubeMX to configure Nucleo projects and several other STM32 boards.
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