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STR71x BSPI COMMUNICATION WITH M25P10-A SERIAL FLASH

1) Configuration of BSPI1 as a master,

2) Erase M25 SPI flash sector0,

3) Transmission of several bytes from Master to M25 SPI flash,

4) Read data already written to the M25 SPI flash.

4.2.1 Flowchart

The flowchart of the application is given below.

BEGIN

/* Send Read status register instruction */

M25_InstructionSend(M25_RDSR);

/* wait until all the sector is erased */

while((M25_DataReceive()&M25_WIP));

/* Initialize STR71x BSPI device */

InitBSPIFlash ();

Chip_Select_M25_DISABLE;

Chip_Select_M25_ENABLE;

Read status register

Chip Select pin driven High / Low

Send a write enable instruction

/* Send a write enable instruction to the memory */

M25_InstructionSend(M25_WREN);

Memory sector0 erase

/* Erase sector0 from the memory */

M25_SectorErase(M25_Sector0);

Initialization

{

...

/* Send a write enable instruction to the memory */

M25_InstructionSend(M25_WREN);

Send a write enable instruction

Verify that all the data sent is programmed

/* Send Read status register instruction */

M25_InstructionSend(M25_RDSR);

/* Wait until all the data sent is programmed */

while((M25_DataReceive()&M25_WIP));

/* Send page program instruction */

M25_InstructionSend(M25_PP);

/* wait until all the data is sent */

for (i=0;i<BufferSize;i++)

/* Send data to the memory */

M25_DataSend(SendBuffer [i]);

Send PP instruction to the flash memory

Send data to the flash memory

A

/*Initialize the STR71x BSPI1 & erase the

corresponding sector memory to be used.*/

/* Write data to the memory and wait until

all the data is programmed*/