About turboscrew

turboscrew · 2021-09-08

I've been trying to get a STM32F427 to go in the system boot loader, but I haven't got any response when I send 0x7F in the USART3 (PB10, PB11). I wonder if the boot loader could be corrupt or something.Is there any way to tell, if the chip is in boo...

turboscrew · 2021-08-17

I need to write a code that acts as an I2C slave to another processor, but I haven't figured out how to tell if the master does a repeated start. That is: what does the slave get if there is a "addressed" read? And how does that differ from one byte ...

turboscrew · 2021-06-02

In STM32F437 data sheet it says VDDA - VREF+ < 1.2 V.Is that a "global" limitation or just a working limitation?If VDDA is 3.3V and VREF+ is 0V, can that harm the chip, or is it just that the conversions don't work right?

turboscrew · 2020-12-14

Is it possible to have two versions of CubeMX installed (or otherwise used) on one Windows-PC?My problem is, that an older project used Atollic, and that still needs to be supported. For another project I installed CubeIDE that wanted a newer CubeMX ...

turboscrew · 2020-11-19

Are there pictures of microarchitectures of STM32F4 series devices? Something like this picture of 56301 DSP.http://strategysanity.com/s-images/dieDSP-Motorola56301.JPGWe'd like to find out what killed some processors on our boards. The dead processo...

turboscrew · 2021-09-16

Does anyone have an idea of the callback logic of the Cube I2C sequential fuctions? And what do the XferOptions really mean?The thing is, the slave expects writes (always addressed), addressed reads and non-addressed reads from the master. Addressed ...

turboscrew · 2021-09-16

Had to do it the hard way - soldering "antennas" to some SMD components for oscilloscope.Turns out, the problem was CAN buffer that yanked its "tx input" high at reset. Even 10k pull-down resistor couldn't hold it down. That made the bootloader think...

turboscrew · 2021-09-08

I was thinking of comparing - both the mentioned one against another one and then comparing 0x00000000 onwards with 0x01FFF000 onwards within the same chip with BOOT0 as "1" (BOOT1 is always "0"). Just to make sure that the bootloader code isn't corr...

turboscrew · 2021-09-08

Looks like address match is only checked after start condition. (If the previous match has been cleared.) And the address match interrupt replaces the RXNE. The address doesn't show up in the RXDR.

turboscrew · 2021-08-18

A-ha. From an example (STM32Cube_FW_L4_V1.8.0) ,I found this:"Then through HAL_I2C_Master_Sequential_Receive_IT() routine, Master device generate a RESTART conditionwith Slave address and a read bit condition.In Slave side, when address Slave match c...

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Can system memory be erased and reproggammed?

STM32L011 I2C slave?

Can VREF+ be zero?

Two CubeMX versions on the same Windows machine?

Microarchitectures of STM32F4 devices?

Re: STM32L011 I2C slave?

Re: Can system memory be erased and reproggammed?

Re: Can system memory be erased and reproggammed?

Re: STM32L011 I2C slave?

Re: STM32L011 I2C slave?