About CDave.1

CDave.1 · 2020-12-13

Hi,In my program (running on STM32F446RE, with 512 KB flash and 128 KB SRAM) I defined two big arrays:int main(void){ /* USER CODE BEGIN 1 */ int16_t data_in[64000]; int16_t audio_buffer[16000];The code can run normally when the data_in array is not ...

CDave.1 · 2020-12-04

Hi,I have setup STM32F446 MCU such that, when pressing the user blue button, it will trigger an external interrupt. Inside the interrupt routine, it contains the I2S receive function:void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){ int16_t audio_buff...

CDave.1 · 2020-11-29

Hi,I am trying to interface an I2S MEMS microphone (SPH0645) with the STM32F446RE MCU for keyword spotting application. The mic produces PCM signal. Unfortunately, I have no idea where to start on receiving and processing the data from this MEMS mic...

CDave.1 · 2020-12-14

I reduced the size of the buffer and the issue was solved. Thank you!

CDave.1 · 2020-12-13

does that mean I should put the array in flash instead? or is there other solution?

CDave.1 · 2020-12-04

Yes I set I2S to 24 bits, after doubling the buffer size and setting it as a global variable there is no error anymore, although the data collected is inaccurate (that is another issue though). Thanks for the detailed explanation, I should have exami...

CDave.1 · 2020-12-04

I have moved the variable so that it is global instead of being local to the interruption function, thanks for pointing that out.I have changed the blocking function to the DMA variant, is that the right way to do it?

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Large array causing hard fault when debugging

STM32F446 I2S fails to work

How to interface I2S MEMS microphone with STM32F4 for KWS application

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Re: STM32F446 I2S fails to work

Re: STM32F446 I2S fails to work