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STM32H7 and PDM2PCM filter (for PDM microphones)

I have some questions and remarks about the PDMFilter (used for PDM MICs).I have it working fine on a Portenta H7. Almost all OK.I have studied the UM2372 : STM32Cube PDM2PCM software library for the STM32F4/F7/H7 Series - User manualHere are my ques...

PDMFilter_1a.png PDMFilter_1b.png PDMFilter_1c.png
tjaekel by Senior III
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Missing section IRTIM in STM32U0 RM and more.

1. According to datasheet, STM32U0 family have an IRTIM (Infrared interface). But this section is missing in RM0503. Also in SYSCFG_CFGR1 there is missing IR_MOD and IR_POL bits.2. In RTC section Figure 297 it is missing RTC_OUT2 and RTC_REFIN pins. ...

AA1 by Senior II
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STM32U5xx vs. STM32H5xx - USB?

I have a board with STMU5A5, as LQFP64, and I am thinking to substitute (just) the MCU with a STM32H5xx one (also as LQFP64 package, because it is faster (250MHz instead of 160MHz)).After checking the pinout and datasheet - I came to one conclusion a...

tjaekel by Senior III
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STM32U5G9-DK2 - Power the board using external 5V

Hi, looking at the scheme it seems possible to power the board by providing an external 5V supply on the 5V Arduino PIN (CN5, pin 5, which is the output of the linear regulator feeded by V_IN), and removing all the jumpers on the CN1. Is it correct? ...

MCU not stopping at sleepmode in freertos

I am using stm32l496  I am trying to enter sleepmode in freertos, but for some reason the system does not enter it. GLOBAL void SleepMode_Activate(void) { unsigned int sleep; flag = 1; /*Disable display task if not already disabled*/ if (mt...

HZaib.1 by Associate III
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Resolved! STM32G0 Reference Manual Typo (ADC-Oversampler)

RM0444 (Rev. 5 Nov 2020 - should be newest): Chapter 15.8 Oversampler: "N is defined using the OVFS[2:0] bits": this should say "OVSR[2:0]" bits. Chapter 15.12.3: Register ADC_CR Note for AD_EN: "set ADEN only when all bits of ADC_CR registers are 0"...

flyer31 by Senior
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Resolved! Do all FPU operations proceed in a single SYSCLK tick?

This should be simple, but I can't find documentation.   I am running an STM32L4P5 at max clock speed (120 MHz), and I have moved all code to SRAM so it is running with zero wait states.    I have an extensive calculation to do using the FPU -- I am ...

JCase.1 by Associate III
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Resolved! Where is ETH_PHY_INTN

In the reference Manual of STMH730, on Table 543, page 2825, there's a Port "ETH_PHY_INTN" listed. Where ist that port? Or where can I configure the GPIO to use for it? I cannot find anything in the datasheet.

pkoevesdi by Associate III
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Where to find ETM version for any specific MCU

Hello, I would like to pick an MCU based on ETM version available on it. This is needed to try out Orbtrace Mini tracing device. It is stated that its currently support ETMv3.5, also i am willing to test lower ETM version and higher too to check the ...

retif by Associate
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  • 3 replies
  • 1 kudos