- #GPIO PINS ON NUCLEO F401RE INSTALL#
- #GPIO PINS ON NUCLEO F401RE UPDATE#
- #GPIO PINS ON NUCLEO F401RE SOFTWARE#
- #GPIO PINS ON NUCLEO F401RE CODE#
#GPIO PINS ON NUCLEO F401RE SOFTWARE#
Open CubeMX software and click on "New Project".Ģ) Once done, you will be prompted to select the board setup similar to the image shown below. Once everything is downloaded and set-up, it's time to have some fun with the board.ġ) Let us try to setup our board initialization with CubeMX to generate our project files. The MCP23017 (I2C io extender) setup and schematics are discussed in my previous blog, maybe you should examine it first. I didn’t because the red USB cable I am using has a common ground since it has a built in USB hub. Note: You may need to connect ground as well from the USB Tester to the Nucleo.
#GPIO PINS ON NUCLEO F401RE UPDATE#
And while you are on that page, download also the firmware update to fix some important issues with the board. Below are the pins usable for the peripherals. Which is pin 6,7 from the top on the right most column of male headers.
#GPIO PINS ON NUCLEO F401RE INSTALL#
Install the needed Nucleo drivers at this link. EWARM is the one I currently have for now. But it will go over the USB connected to the F401, not the USB connected to the stlink processor (which is the mini-B connector on the board). I currently own an Embedded Workbench for ARM tool chain, technically the CubeMX software can generate targets for other tool chain. The USBVCP can be used on the 401 if you connect your own USB connector to the appropriate pins. There is also an online ide at mbed, but I currently do not use it since I work offline most of the time. Nucleo F401RE provides the following hardware components: STM32F401RET6 in LQFP64 package. It will also generate a template project for your compiler tool chain.
#GPIO PINS ON NUCLEO F401RE CODE#
We will use the CubeMX software to generate an initialization code for our nucleo F401RE board. You will find the link to the download at the end of the page. Set PC13 as GPIOEXTI13 (this is the blue user button on the Nucleo). Download STM32CubeMX from STMicroelectronics here. (optional) set any GPIO pin as output (and connect an LED to it, here PC8 is used) 7. To accomplish this experiment, we need the following tools: So it's a very simple setup, we output an 8 bit counter value to the leds and loop. ↳ STM boards (Discovery, Eval, Nucleo.↳ Let us know a bit about you and your projects.It is not clear from the unit file if and where A2 is previously defined, hence my maintainability comment. Separately, MISRA C suggests that macros used in preprocessor directives should be defined before use. I'm thinking the change might have broken the SPI implementation? I'm left wondering what else may be affected by this change. SPI library also uses NUM_DIGITAL_PINS to signal that the CS pin will be controlled by the library user in software, here: Defining PA4 as A2 instead of as a number (was 48) appears to be a recent change (. I've so far been unable to track down where A2 is actually defined, but in a debugger PA4 is assigned 55, which makes sense if we start counting Analog up from NUM_DIGITAL_PINS. The user LED might be driven by a different Pin on. The user LED is driven by GPIO Pin 13 on the Nucleo F401RE board. Go to Hardware Implementation > Hardware board. Open the Modeling tab and press CTRL+E to open Configuration Parameters dialog box. So far so good.Īlso in variant.h, PA4 gets defined as A2. This model has been configured for the Nucleo F401RE board. Nucleo-F401RE variant.h defines NUM_DIGITAL_PINS as 52. If this test fails the begin method simply returns with no action or warning, not really the best of practice. SPI.cpp has numerous checks to test if _pin argument is greater than NUM_DIGITAL_PINS such as: #define PH0 26 // NC by default SB55 opened These PWM pins use a Prescaler to break the single cycle of the clock pulse to generate the output signal. All PWM pins can generate the desired output signal to control the external peripherals. #define PC15 25 // NC by default SB48 opened PWM pins are available in both STM32 and Arduino. #define PC14 24 // NC by default SB49 opened