AN4570 datasheet(27/46 Pages) STMICROELECTRONICS

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DocID026804 Rev 1

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AN4570

Interfacing with a non-multiplexed, asynchronous 16-bit SRAM

sramHandle.Init.WrapMode

= FMC_WRAP_MODE_DISABLE;

sramHandle.Init.WaitSignalActive

= FMC_WAIT_TIMING_BEFORE_WS;

sramHandle.Init.WriteOperation

= FMC_WRITE_OPERATION_ENABLE;

sramHandle.Init.WaitSignal

= FMC_WAIT_SIGNAL_DISABLE;

sramHandle.Init.ExtendedMode

= FMC_EXTENDED_MODE_DISABLE;

sramHandle.Init.AsynchronousWait

= FMC_ASYNCHRONOUS_WAIT_DISABLE;

sramHandle.Init.WriteBurst

= SRAM_WRITEBURST;

/* SRAM controller initialization */

if(HAL_SRAM_Init(&sramHandle, &Timing, &Timing) != HAL_OK)

{

return SRAM_ERROR;

}

/*##-2- SRAM memory read/write access

######################################*/

/* Write data to the SRAM memory */

if(HAL_SRAM_Write_16b(&sramHandle,

(uint32_t *)(SRAM_DEVICE_ADDR + WRITE_READ_ADDR),

sram_aTxBuffer,

BUFFER_SIZE) != HAL_OK)

{

return SRAM_ERROR;

}

/* Read back data from the SRAM memory */

if(HAL_SRAM_Read_16b(&sramHandle,

(uint32_t *)(SRAM_DEVICE_ADDR + WRITE_READ_ADDR),

sram_aRxBuffer,

BUFFER_SIZE) != HAL_OK)

{

return SRAM_ERROR;

}

return SRAM_OK;

}

/**

* @brief

Initializes the SRAM MSP.

* @param

None

* @retval None

void HAL_SRAM_MspInit(SRAM_HandleTypeDef *hsram)

{

static DMA_HandleTypeDef dmaHandle;

AN4570 Datasheet(PDF) 27 Page - STMicroelectronics

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