SAI configuration of the STM32L5xxx board

[DYann.1]

Hello,

I would like to know if there are people who have already configured the SAI PORT to communicate with a CODEC ?

I configured like this :

But I don't have the clock on the PIN PF7 :

The SAI_MCLK_B is the curve in blue. Thank you for your helps.
Regards.

[DYann.1]

Yes now it's better but How did you declare playbuf please ? An array ?

[AScha.3]

i wrote down in my post...you didnt read, eh ?

int32_t playbuf[4096*2] __attribute__ ((aligned (32)));

[DYann.1]

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@AScha.3 wrote:

and for begin, switch off d-cache, if your cpu has it. (cache management ...for later. :) )

in callbacks put your data, or for "pause" , set data zero. but never stop the running stream

---

Sorry I didn't read all your message. How to switch off d-cache ? By software or by configuration CubeMX ?

[AScha.3]

your cpu has d-cache ? then ...as you like.

if in Cube ...de-select.

or in main.c just comment out. 

[DYann.1]

I can't see d-cache in CubeMX but icache probably it's the same ?

if so then it is disabled

[AScha.3]

no !   

i-cache is Instruction , for code

d-cache is for Data !

I-cache is no problem, leave it on.

[DYann.1]

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@AScha.3 wrote:

no !   

d-cache is for Data !

---

Sorry but I can't find where is the 'DCACHE' tab under CubeMX, can you show me ?

[DYann.1]

uint16_t write (uint16_t reg,uint16_t data)
{ 	HAL_StatusTypeDef txResponse;
	uint8_t buff[4] ;
	buff[3]=0xff & data;
	buff[2]= 0xff & data>>8;
	buff[1]= 0xff & reg;
	buff[0]= 0xff & reg;

	txResponse = HAL_I2C_Master_Transmit(&hi2c1,WRITE_ADDRESS,buff,4,HAL_MAX_DELAY); //0XFF
    if (txResponse != HAL_OK)
	{
    	return HAL_ERROR;
	}
    HAL_Delay(1) ;
    return (0);
}

I don't know where is the 'DCACHE' but now I have a clock on the MCLK pin and I have no errors on my I2C bus.
Before I have an error in this function. Thank you for your helps AScha.3.

[AScha.3]

good !

and - if not there - your cpu has no d-cache !  :)