About SG.4

SG.4 · 2021-08-07

Certain things which are unclear are :1) When I increase the size of the PDM buffer and PCM buffer say to 2000 ,4096 to collect more samples for storing to convert them into a larger file into.wav or mp3 , I find no creation of the file in SD card .T...

SG.4 · 2021-07-16

The Acquired PDM signal is from VM3000 mic and PDM2PCM conversion using stm32f745?could the acquired values be played as loopback to verify whether the acquired sound is in audible frequency to human ears? How could this be validated? all suggestions...

SG.4 · 2021-07-11

There is something missing upon receiving junk .How do we keep the count of how much response will be received in advance ? should any flags be set to check whether the response received is correct and clear upon not receiving proper response , bit ...

SG.4 · 2021-07-11

If any examples on such please if anybody finds or could share some of their experience would be of great help.Thanks in advance.

SG.4 · 2021-07-08

The help will be greatly appreciated . I have to write this raw data extraction of PCM values in onto sdmmc sd card . And could anyone explain me how does the PDM2PCM functions for the mems than ST PDM microphones? I usually find examples of stm32 co...

SG.4 · 2021-08-09

Hi @Community member ,Could you please provide where are your worked examples link.It would be of great help.thanks

SG.4 · 2021-08-09

ok Thanks the RTOS .. yes a newbie so, thanks by the way .

SG.4 · 2021-08-09

Hi @Community member ,Thank you for your response ,where could be the stack issue resolved ,could you please suggest. ? Is it before generating the code where we give the file , in the Advance linker settings .>> The individual contexts means for a ...

SG.4 · 2021-07-26

Hi @Eleon BORLINI ,Ya I have had my doubts cleared ,thanks a lot for your help and the right guidance clearing of the minute details .I would definitely do that .Have a nice day .Take care.  Kind Regards--Shweta

SG.4 · 2021-07-22

Hi @Eleon BORLINI ,I have checked the audacity one ,thank you for that .>>I have some basic doubts the middleware PDM2PCM outputting 16 bit PCM ,does these sample obtains have any headers present or its just plain or do we need to add the headers .?...

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Hello ST Experts , I have a stm32f745 ,which creates a single file and writes a string array in SD card using FATFS, but now I want to create multiple files which appends the PDM2PCM middleware converted PCM buffer values. from the 3 MEMS acquired?

Hello Experts Could anyone suggest me how to convert the raw PCM values received in log file be to mp3 or .wav formats .And if there any libraries that could be included or any method? after conversion storing that into sdmmc and play that as loopback?

Lora RN2903a with STM32F745 .. when transmitted system commands the uart receive is shown below .set the baud to 57600 bps and DMA in circular for half word .

testing of ublox LARA R.211 a 4G LTE with stm32f745 controller using USB_Host middleware & USB_OTG_HS ?Can anybody help with the proper CubeMX parameters or are there any CDC USB host class examples so that this module detects a virtual com port.

Hello ST Experts , I have a three VM3000 PDM mems interfaced to a STM32f745IETx controller , via I2S2, I2S1 lines and another in SAI2_SAIB block , how do I configure three such in programming while using PDM2PCM middleware , can anybody help me ?

Re: Hello ST Experts , I have a stm32f745 ,which creates a single file and writes a string array in SD card using FATFS, but now I want to create multiple files which appends the PDM2PCM middleware converted PCM buffer values. from the 3 MEMS acquired?

Re: Hello ST Experts , I have a stm32f745 ,which creates a single file and writes a string array in SD card using FATFS, but now I want to create multiple files which appends the PDM2PCM middleware converted PCM buffer values. from the 3 MEMS acquired?

Re: Hello ST Experts , I have a stm32f745 ,which creates a single file and writes a string array in SD card using FATFS, but now I want to create multiple files which appends the PDM2PCM middleware converted PCM buffer values. from the 3 MEMS acquired?

Re: Hello ST Experts , I have a three VM3000 PDM mems interfaced to a STM32f745IETx controller , via I2S2, I2S1 lines and another in SAI2_SAIB block , how do I configure three such in programming while using PDM2PCM middleware , can anybody help me ?

Re: Hello ST Experts , I have a three VM3000 PDM mems interfaced to a STM32f745IETx controller , via I2S2, I2S1 lines and another in SAI2_SAIB block , how do I configure three such in programming while using PDM2PCM middleware , can anybody help me ?