STM32 MCUs Embedded software

Ask questions and find answers on STM32Cube packages, including HAL, LL and middleware, and expansion software.

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STM32H7 8xPDM microphones via SAI using STM32CubeMX

Hi guys,I'm looking at a number of ways to interface 8xPDM microphones and one of the ways is using an STM32H7 with it's SAI/PDM interface. According to the documentation (AN5027, 4.3.1), I should be able to select up to 8 microphones in the H7 SAI1_...

sully by Associate II
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  • 7 replies
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Caps lock led turn on/off

Posted on August 22, 2014 at 08:53I want to turn on/off keyboard led using STM32F4 Discovery HID example.. Keys are working fine.I have problem with output Set_report. Led is not turning on/off although it seems i am sending correct request.I am sen...

I have a working 3D printer, and an identical non-working one with a blown STM32F070CBT6. Can I extract the firmware from the working one?

I bought a second non-working used 3D printer with the expectation of repairing it. Turns out the MCU was destroyed - it actually had holes blown in its casing! I bought a few new MCUs of the exact same type, and replaced it. I can successfully put t...

JMora by Associate II
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  • 4 replies
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Resolved! STM32F072 DFU Bootloader/Reset Problem

Posted on July 05, 2018 at 08:56 Hi all, I'm having a strange problem with a design using the STM32F072V8 MCU. MCU operates at 3.3V. We have a USB connector internal to the product, solely for programming the MCU via DFU. I have the BOOT0 pin...

is it possible to write to flash

I see that there is a function to write SDRAM ( HAL_SDRAM_Write_32b ) but no FLASH.I want to take data from ADC array[2000] and save so I do not loose when it is powered down.And of course recall / display it later.

MNapi by Senior III
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  • 2 replies
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STM32F401 USB memory stick bootloader

Hi,I need to write a bootloader which will load the new program from a USB memory stick.Unfortunately I cannot use the ROM based DFU bootloader.The bootloader would need to be held in FLASH and protected against update. Easy enough.I believe that the...

PRobe by Associate II
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  • 6 replies
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Resolved! STM32CubeL4 low power mode STOP2 with RTC

Hi, I'm using latest FW STM32Cube_FW_L4_V1.13.0 and the PWR_STOP2_RTC example seems to fail waking from sleep mode. It goes to sleep after 5 s alright and power consumption drops from cca 11 mA to 4 uA but after cca 33 s, as stated in readme, nothing...