About Brian H

Brian H · 2025-02-11

I think const-correctness is an important-enough concept to call this a bug report.In the HAL Driver for STM32F1xx, much of the codebase is not const-correct. For G4xx, I see that I2C is not.What is const-correctness in C?If a function that accepts ...

Brian H · 2025-01-27

I have a project that uses the nBOOT pin for GPIO output and cannot pull it in any direction during POR. Therefore, the nSWBOOT0 bit needs to be programmed to 0 (its default is 1) before the code will function properly.What is the recommended practi...

Brian H · 2024-11-12

Just wondering if anyone else sees this on the regular.I have a custom board with an STM32F107 MCU (but I see this across hardware projects with various ST MCUs).I have the ST-LINK/v2 doing SWD to the MCU and it's connected to the host PC through a S...

Brian H · 2024-10-30

I'm using the ST Cube environment (IDE + MX) to configure the SPI2 peripheral in Full-Duplex Master mode on a STM32F105VBHX chip.It seems like the peripheral is not driving the NSS (chip select) pin (PB12). When the pin is selected for SPI2_NSS and ...

Brian H · 2024-10-30

I am using STM32F105xx family, working with HAL_SPI API. I have discovered that the call to HAL_SPI_Receive_IT causes whatever data is in the provided buffer to be clocked out on MOSI. This issue is also discussed to some extent in this thread, but...

Brian H · 2025-02-12

@TDK wrote:> Not for me. From "stm32f1xx_hal_spi.h" as found in the project I'm working on now:Might want to update your library then. It's const in the latest version. Looks like it may have been updated 7 months ago.stm32f1xx-hal-driver/Inc/stm32f...

Brian H · 2025-02-12

Note: Since the const-correctness of HAL Driver clearly varies across supported processor families, I've edited my original post to be more specific to the families where I've directly observed the problem.I think it would be good for STM to audit th...

Brian H · 2025-02-12

@Saket_Om wrote:Hello @Brian H Our HAL driver is compliant with the rule 8.13 of MISRA C 2012. No it isn't. Not in the project I created some time last year against STM32F1xx. See my reply to TDK with quotes from the stm32f1xx_hal_spi.h file for e...

Brian H · 2025-02-12

Not for me. From "stm32f1xx_hal_spi.h" as found in the project I'm working on now: HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout); HAL_StatusTypeDef HAL_SPI_TransmitReceive(SPI_HandleTy...

Brian H · 2024-11-27

This is good news, as it implies that there is not a limitation in the h5 silicon.When should we expect this version to be published through the in-app update channels? Right now, the latest update package I'm being shown only includes MX 6.12.1.202...

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C-Library const-correctness for STM32F1xx

Recommended Practice for Programming Option Bits in Production

Frequent ST-LINK/v2 Hang with Solid Green LED

STM32F105xx SPI2 Does Not Drive NSS Pin High when Idle

HAL_SPI_Receive_IT Also Transmits

Re: C-Library const-correctness

Re: C-Library const-correctness for STM32F1xx

Re: C-Library const-correctness

Re: C-Library const-correctness

Re: STM32H5 does not have a DQS line for HYPERBUS