About AB.17

AB.17 · 2019-06-11

I'm trying to move an array from DTCM to SRAM1.So I use MDMA in as memery to memory config. It isn't my first time I got it running, but never used it to transfer data from/to TCM region.I want to copy array at 0x20000018 starting address (DTCM regio...

AB.17 · 2020-01-23

Do you have the same code for both revisions? If so, have a look at AN5312, looks like it might matter to your issue.

AB.17 · 2020-01-21

"Am running H743 clock from PLL (=480MHz). So max QSPI clock available is 240/((prescalar=1)+1)=120MHz"Max QSPI max clock isn't stated by what you do, but what is written characteristics in papers, which you clearly haven't read yet. When you exceed ...

AB.17 · 2020-01-21

QSPI pins gpio OSPEEDR register should be "very high"? Can't tell what's the value from the code. Compensation cells enabled? So you do run "qspi kernel clock" directly from PLL? What "prescaler" are you talking about? The one from QSPI CR register?M...

AB.17 · 2020-01-17

Nah just as I understand OP is struggling within possible issues: QSPI desired config, talking to flash ic, capturing waveform theory, signal integrity carnage. By setting clock to 1 MHz last two issues are removed. If the first two issues are resolv...

AB.17 · 2020-01-17

What's the model of your logic analyzer which you expect can capture 100 MHz waveform?Afaik QSPI can be clocked somewhere around +100 MHz, independently from bus clocks. All the timings contraints are in papers.My bit of advice: simplify: set clck to...

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MDMA read from DTCM - transfer error

Re: Simple Single ADC conversion can hang up (ADC_CR_ADSTART keeps set)

Re: I am trying to build up a QSPI connection with the STM32H7 Nucleo Board (H743zi2). I generated the keil project(setup with CubeMX). Am measuring the CS and CLK with my oscilliscope & I cant see anything for QSPI clk more than 30MHz.

Re: I am trying to build up a QSPI connection with the STM32H7 Nucleo Board (H743zi2). I generated the keil project(setup with CubeMX). Am measuring the CS and CLK with my oscilliscope & I cant see anything for QSPI clk more than 30MHz.

Re: I am trying to build up a QSPI connection with the STM32H7 Nucleo Board (H743zi2). I generated the keil project(setup with CubeMX). Am measuring the CS and CLK with my oscilliscope & I cant see anything for QSPI clk more than 30MHz.

Re: I am trying to build up a QSPI connection with the STM32H7 Nucleo Board (H743zi2). I generated the keil project(setup with CubeMX). Am measuring the CS and CLK with my oscilliscope & I cant see anything for QSPI clk more than 30MHz.