About dscdsc

dscdsc · 2021-12-07

I'm using stm32flash (https://sourceforge.net/projects/stm32flash) as my host on a raspberry pi. It's connected to the STM32H750 using I2C.Steps:Upload the code onto the STM32./stm32flash -a 0x4E -w stm32-blinky.bin -v -R /dev/i2c-1 stm32flash 0.6 ...

dscdsc · 2021-12-01

I'm following the bootloader ACK procedure outlined in AN4286, page 6. The issue I'm having is that the bootloader never responds with 0x79 (ACK) or 0x1F (NACK) after the initial synchronization (Sent 0x5A, Received 0xA5). Are there any issues with ...

dscdsc · 2021-11-29

Is it possible to modify this register field using STM32CubeProgrammer?I've tried both:Writing a value using the Registers tabWriting to a memory address that the field occupiesBut neither work.

dscdsc · 2021-04-13

The MCU on my STM32F407-DISCO1 board is being misidentified as STM32F215 / 217. I'm pretty sure it is in fact STM32F407VG. What could be causing it?

dscdsc · 2021-04-08

Using:Latest STM32CubeIDENucleo-64 G071 (Cortex-M0+)GNU Tools for STM32 (9-2020-q2-update) (default)There seems to be a problem multiplying long numbers. Here's what a multiplication of two 32 bit ints looks like.And this is what a multiplication of ...

dscdsc · 2021-12-10

Dupe.

dscdsc · 2021-12-09

Setting BOOT0 to Low before executing the Go command solves the problem.

dscdsc · 2021-12-08

The instruction at 0x1ff0b4cc is actually DSB SY (https://developer.arm.com/documentation/dui0489/c/arm-and-thumb-instructions/miscellaneous-instructions/dmb--dsb--and-isb) so it makes sense that it doesn't cause a restart. Still not sure why it caus...

dscdsc · 2021-12-08

Able to get to ACK by sending 0x00 instead of the initial dummy byte, but it takes 40 attempts.

dscdsc · 2021-12-03

I was running into an issue when the bootloader restarted the STM32 (can be seen by looking at the NRST line) if the sleep() before checking the result of the erase command was too long. Asking for ACK after that naturally returned NACK. I was able t...

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System Bootloader GO command doesn't work

SPI Bootloader Synchronization Issue

Modifying BOOT_ADD0 value

MCU being misidentified on an STM32F407-DISCO1

STM32CubeIDE compiler multiplication bug

Re: SPI Bootloader Synchronization Issue

Re: System Bootloader GO command doesn't work

Re: System Bootloader GO command doesn't work

Re: SPI Bootloader Synchronization Issue

Re: STM32F723 I2C bootloader : No-Stretch Erase command leads to long clock stretching anyway. How to deal with it?