![]() The STM32 Nucleo-144 board comes with the comprehensive free STM32 software libraries and samples available with the STM32Cube MCU package. The Nucleo 144 card STM32 does not require a separate probe as it integrates the ST-LINK debugger/programmer. The ST Zio connector, which extends ARDUINO® Uno V3 connectivity, and ST Morpho headers provide an easy way to extend the functionality of the Nucleo open development platform with a wide range of specialized shielding. For compatible boards, the internal or external SMPS significantly reduces power consumption in run mode. The STM32 Nucleo-144 board provides 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 offered by the STM32 microcontroller. ![]() The STM32 ARM Cortex™ M4 processor from STMicroelectronics achieves 100 DMIPS at 80 MHz with its floating point unit. The 32-bit Flash microcontrollers (MCU) of the STM32L4 family are based on the ARM Cortex™ M4 Core, a core specially designed for ultra-low-power applications. Is there something under the mbed hood that is stepping on my register accesses? I see this behavior for both GPIOB and GPIOC, but GPIOD behaves as expected.The new development board from the Nucleo 144 series with the STM32L496ZG microcontroller. If I use the already configured GPIOB->MODER for the register references, the extra processor time spend doing the redirection actually allows the register to revert before the first read completes, so I never see the written value stick. Display expansion board for STM32 Nucleo-144 UM2905 User manual UM2905 - Rev 2 - November 2021 For further information contact your local STMicroelectronics sales office. define GPIOB_MODER *(uint32_t*)0x40020400 X-NUCLEO-GFX02Z1 bottom view Pictures are not contractual.When I hard code the register address, the write takes effect, but after a short time, the register reverts back to it's reset value. It appears that the HAL headers are not he problem. It doesn't appear that any ports have their configuration locked. I get the same behavior on both an F746 Nucleo and an F446 Nucleo board that I tested. For now, I'm just going to make my own HAL header file for the GPIO registers, but this seems like it should be addressed(pun intended). Note that not every STM32 part has an associated Nucleo board. Note the double row Arduino-compatible headers, which allow the Nucleo-144 to accept Arduino shields. These boards often include the most powerful and largest of the STM32 microcontrollers. This leads me to believe something is amiss in the HAL stack. Nucelo-144: More pins than you can shake a stick at. If I remove HAL abstractions and "poke" the register directly in this way: ![]() In fact all of the other PORTB-> registers (OTYPER, OSPEEDR, PUPDR) all return 0x00000280, which is not correct. For example, setting PORTB->MODER has no effect and the value remains at 0x00000280(the reset value). I'm moving from the platform agnostic DigitalIN, DigitalOut, PortIn, PortOut to STMicro port specific references such as PORTB->MODER.įor some ports, my GPIO initialization and use of GPIOs works(Port D seems to work correctly), but PORTB and PORTC are not working with the HAL abstractions. ![]() STMicroelectronics STM32 Nucleo-144 Dev Board. The STM32 Nucleo-144 board does not require any separate probe as it integrates the ST-LINK/V2-1 debugger/programmer. I'm trying to remove MBED generalized HAL abstractions from my STMicro Nucleo-144 board based project and am getting strange behavior. The STM32 board features an ST Zio connector for Arduino Uno V3 connectivity and ST morpho headers to expand the Nucleo open development platform with a wide selection of shields. Nucleo 144 boards and GPIO HAL - Not all ports work To start a new conversationĥ years, 8 months ago. Important changes to forums and questionsĪll forums and questions are now archived. ![]()
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