HAL_NOR_MspWait implementation

> This NOR Flash has a Ready/Busy signal

Can you give a link to its datasheet?

I don't Cube so I don't know how to do this in that environment, but generally you enable the asynchronous WAIT using ASYNCWAIT bit in the respective FSMC_BCRx register. There are several timing considerations which go with this bit, read the WAIT management in asynchronous accesses subchapter of FSMC chapter. And of course, don't forget to connect the NWAIT pin and set it up as appropriate AF in GPIO.

JW

Hi waclawek.jan

the datasheet Flash memory is

https://community.st.com/external-link.jspa?url=http%3A%2F%2Fwww.cypress.com%2Ffile%2F177976%2Fdownload

(S29GL128S). My current MCU is a SMT32F429 with a LCD. The NWAIT's pin is used by the LCD_B2 function of LCD's driver . RY/BY's signal is connected to PC13 (This pin hasn't an alternative function). My idea is manage the wait procedure implementing the HAL_NOR_MspWait function.

NOR_Status NOR_GetStatus(uint32_t Timeout)

{

   uint16_t val1 = 0x00, val2 = 0x00;

   NOR_Status status = NOR_ONGOING;

   uint32_t timeout = Timeout;

   /*!< Poll on NOR memory Ready/Busy signal ----------------------------------*/

   while((GPIO_ReadInputDataBit(GPIOD, GPIO_Pin_6) != RESET) && (timeout > 0))

   {

      timeout--;

   }

   timeout = Timeout;

   while((GPIO_ReadInputDataBit(GPIOD, GPIO_Pin_6) == RESET) && (timeout > 0))

   {

   timeout--;

   }

   ...

}

Best regards