About Guido Körber

Guido Körber · 2024-11-04

I just started looking at the STM32C071 family as an alternative to the STM32F042 and STM32F072 we currently use. To my disappointment the USB stack for the C071 is a total mess (dozens of files and complete spaghetti) and on top of that it seems to ...

Guido Körber · 2024-02-19

It looks like the BSP_SD_IsDetected function from the sample codes is working backwards. According to the SD-Card spec this pin has a weak pullup (50 kΩ) inside the card. So the STM32 should have a weaker pull down on the pin and detect the presence ...

Guido Körber · 2024-02-01

My MX Repository has grown to more than 40 GB which is not exactly fun on the SSD of my MacBook. So I was wondering what made it so big.There seem to be all the zip files of all installed firmware packages. Does CubeMX/CubeIDE ever use them again?And...

Guido Körber · 2020-10-07

I did expect this to be development platform neutral but had to find out that I will not be able to participate since I don't use Windows.

Guido Körber · 2019-11-02

It seems like we have run into a delicate timing difference of the I2C in STM32F042 and STM32F072. Identical code (coming from the exact same source file) for I2C works fine on STM32F042G4U but has a problem on STM32F072V8T.When doing larger I2C tran...

Guido Körber · 2024-11-05

Thank you. Most likely I will go with modifying my existing code to fit the C071. It looks like there are not many differences in the hardware, besides the host function that I don't need there seems to be only the pointer register for the buffer des...

Guido Körber · 2024-02-20

Please, this question is about the sample code, not about the SD-Card specs or various sockets.So again: The sample code for the F7 series seems to do the card detection wrong. I wonder if this has ever been tested?Here is the function:uint8_t BSP_SD...

Guido Körber · 2024-02-19

Source: Simplified Physical Layer Specificationhttps://www.sdcard.org/downloads/pls/pdf/?p=Part1_Physical_Layer_Simplified_Specification_Ver9.10.jpg&f=Part1PhysicalLayerSimplifiedSpecificationVer9.10Fin_20231201.pdf&e=EN_SS9_1 That is pin 1 on SD/min...

Guido Körber · 2024-02-01

Thank you, that did cut it down to 1/3.

Guido Körber · 2020-10-08

Thank you

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STM32C071 USB stack

SD-Card function BSP_SD_IsDetected backwards?

Uncluttering the Repository

MacOS not supported, can't participate (Oct 8th)

STM32F0 timing of the flags in ISR, especially TCR and RXNE

Re: STM32C071 USB stack

Re: SD-Card function BSP_SD_IsDetected backwards?

Re: SD-Card function BSP_SD_IsDetected backwards?

Re: Uncluttering the Repository

Re: MacOS not supported, can't participate (Oct 8th)