About BMcDo.3

BMcDo.3 · 2024-11-13

Using STM32CubeMX (v6.12.1) with USB_OTG_HS enabled (as host) on an STM32F4.On our device, we have the only OTG_HS_VBUS pin connected to the USB VBUS, and it is working correctly as a USB host. I was investigating if I can repurpose this pin (I guess...

BMcDo.3 · 2023-09-07

HAL_SPI_Receive_DMA() is non-blocking; it just sets up and starts a transfer. Is it safe to call it from an interrupt context?If it is (at least possibly or sometimes) safe, does it make a difference whether the SPI port is configured as SPI_MODE_MAS...

BMcDo.3 · 2022-01-26

I'm trying to do a periodic ADC capture on 2 channels, triggered by TIM5. ADC should output to memory via DMA, with a DMA interrupt upon each completion to read the data from each scan.So far, the DMA interrupts aren't hitting, and the ADC doesn't ev...

BMcDo.3 · 2021-09-08

In STM32CubeMX, version 6.3.0, using STM32CubeF4 v1.25.2, when a SPI port is set to mode "Receive Only Master", it sets `hspi#.Init.Direction = SPI_DIRECTION_2LINES_RXONLY;` in generated code, as (I think) it should. However, the generated code doesn...

BMcDo.3 · 2021-07-28

Is there any guidance or examples to follow for implementing the Cortex Debug+ETM Connector (20-pins, 0.05") on an STM32F4 board, with the connector as specified here, such that ETM trace is usable?J-Link/J-Trace User's Guide: Connectors (keil.com)e....

BMcDo.3 · 2024-11-18

Our STM32F429x-based device acts only as a USB host (never USB device), and it connects only to USB devices which are not externally powered. (That is, our device as USB host provides power to any connected USB device.)Does that mean that the feature...

BMcDo.3 · 2024-02-14

@alister wrote: ...For a guide, Google threw this: http://blog.atollic.com/using-gnu-gcc-on-arm-cortex-devices-placing-code-and-data-on-special-memory-addresses-using-the-gnu-ld-linker. It's by Atollic. But CubeIDE will be the same as they both use g...

BMcDo.3 · 2022-01-28

Thanks for your help.On further investigation, I see no sanctioned way with the (non-LL) HAL to enable the channels before starting the PWM output.I'm working around the issue by (ab)using the private function TIM_CCxChannelCmd(). I've replaced TIM_...

BMcDo.3 · 2022-01-27

> Start HAL_TIM_OC_Start (?) TIM_CHANNEL_3Did you mean HAL_TIM_PWM_Start()?EDIT: I see HAL_TIM_OC_Start() is identical to HAL_TIM_PWM_Start().> next line. This should not affect sync.What I mean is not only do I need them in sync for steady state ope...

BMcDo.3 · 2022-01-27

> Did you start...1. No, actually - we callHAL_TIM_PWM_Start(&htim5, TIM_CHANNEL_4);Maybe this is the problem, as it doesn't start TIM_CHANNEL_3? How would I start them both at the same time, and produce the same output as this does on CHANNEL_4? (HA...

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User Activity

USB host (USB_OTG_HS) - "Activate_VBUS" has no effect?

Safe to call HAL_SPI_Receive_DMA() in interrupt context?

TIM-triggered periodic ADC capture w/ DMA

SPI "Receive Only Master" doesn't work with DMA

STM32F4 - Implementing Cortex Debug+ETM Connector (19/20-pins, 0.05")

Re: USB host (USB_OTG_HS) - "Activate_VBUS" has no effect?

Re: How to fix variables to a specific memory using STM32CubeIDE

Re: TIM-triggered periodic ADC capture w/ DMA

Re: TIM-triggered periodic ADC capture w/ DMA

Re: TIM-triggered periodic ADC capture w/ DMA