About GBohlin

GBohlin · 2022-05-18

Hi,I have an STM32L073 communicating with an IS31FL3246 LED driver over I2C. Occasionally the MCU will not send the 9th clock pulse and therefore locks the bus. (As shown in the picture the analog signal has a valid waveform without much noise)Before...

GBohlin · 2022-04-08

I'm trying to set the QUADSPI FIFO threshold when reading from external flash using interrupts and I want an interrupt to occur when there are 32 valid bytes in the FIFO. I'm setting the QUADSPI_CR_FTHRES to 31 according to the datasheet but when I l...

GBohlin · 2022-03-31

Hi all,I'm using the MDMA to communicate with an external flash over QUADSPI.I have an implementation which works great without FreeRTOS, but when I implement it using FreeRTOS I get Transfer Error Address. I have verified that the RAM address exists...

GBohlin · 2024-06-24

I never got a fix for it and unfortunately I don't remember what workaround I did. It was quite a while ago.

GBohlin · 2022-05-31

That makes sense, I've seen that there are filters in the microcontroller that I can activate but I haven't looked into it too much, maybe I should give that a try. I also at the moment have a crude setup with fairly long wires for development purpos...

GBohlin · 2022-05-31

Hi Jan,At the moment I have a workaround which detects timeout, and therefore also ARLO. When that happens I pull the reset pin on the slave and restart the communication. I was hoping there was a better alternative but as I understand it from your a...

GBohlin · 2022-05-31

Hi,> Do please confirm that the issue occurs when the master is writing the slave please ?Yes, this happens when the master (STM32L073) is writing to the slave.> On the faulty capture, it looks that slave ack is missing...Yes, that is because it does...

GBohlin · 2022-04-01

The issue that caused the error wasMDMA_CxTBR_SBUSChanging that from 1 to 0, and it no longer crashed. The other issue I faced which is why I though this was RTOS related was that the FreeRTOS variables shared the same memory in RAM as my local varia...

User statistics

User Activity

STM32L073 I2C not sending 9th clock pulse

STM32H747 QSPI FIFO threshold is 5 bits but only 4 are writable

STM32H7 MDMA Transfer Error Address when using FreeRTOS

Re: STM32H747 QSPI FIFO threshold is 5 bits but only 4 are writable

Re: STM32L073 I2C not sending 9th clock pulse

Re: STM32L073 I2C not sending 9th clock pulse

Re: STM32L073 I2C not sending 9th clock pulse

Re: STM32H7 MDMA Transfer Error Address when using FreeRTOS