About lukasma

lukasma · 2024-02-29

Hello, I have a setup where I use an STM32H747XIH6U and an ADAU1361 codec on the I2S-interface. I want to use the PDM-mics on the ADAU, and in order to do that, ADAU has to be in I2S master mode according to the datasheet. Consequently, STM has to be...

lukasma · 2024-01-29

Using STM32CubeIDE 1.6.1 and an ST-LINK V3, I'm trying to debug an application flashed onto an STM32H747I-DISCO board. The application/binary is built "outside" STM32CubeIDE from command line, and I can upload it to the board with STM32CubeProgrammer...

lukasma · 2024-03-13

We did measure with a spring tip, but by hand, and the easiest way to ground the spring tip was to keep it in contact the metal "cover" of the microSD connector at the same time as trying to keep the probe steady, so it is not surprising that we have...

lukasma · 2024-03-13

I mean, we still have some under-and overshoots:Between each vertical line is 20 ns. But it doesn't look at all that bad as it did initially.

lukasma · 2024-03-13

Well, turns out that when we configured PLL2 to provide the clock for MCO2, we used dividers which were not even, According to the reference manual, you don't get a duty cycle of 50 % in that case. Switching these to even numbers instead now gives a ...

lukasma · 2024-03-13

We have also tried to measure on an STM32H735G-DK devboard, with MCO frequency set to 50 MHz, and there, the duty cycle is almost exactly 50%. Are there other functionalities that, when activated, might disturb the MCO2 clock? Or is it the hardware o...

lukasma · 2024-03-13

We have now tried to measure the clock with a Lecroy HDO6104B using av ZS1500 active probe. The duty cycle of the MCO2 is around 61% for a number of different frequencies. We have tried with 49.152 MHz, as we want in the final application, but also w...

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STM32H747 I2S slave mode

Can't debug using ST-LINK V3 and STM32CubeIDE 1.6.1

Re: STM32H747 I2S slave mode

Re: STM32H747 I2S slave mode

Re: STM32H747 I2S slave mode

Re: STM32H747 I2S slave mode

Re: STM32H747 I2S slave mode