HAL_QSPI function

[Dick Lin]

Posted on June 26, 2018 at 18:39

Hi,

Why there is no HAL_QSPI_TransmitReceive() function like HAL_SPI does?

Thx

[Tesla DeLorean]

Posted on June 26, 2018 at 18:48

Interaction with the devices is heavily asymmetrical, the interface is clocked on the large receive blocks without the need to stuff dummy data like SPI.

[Dick Lin]

Posted on June 26, 2018 at 19:00

In CubeMX, there is QuadSPI mode drop down menu can select 'Bank1 with Single/Dual Lines'. Does it mean I can use single GPIO for tx/rx such as just IO0?

We are short of GPIO pin now. Wondering if I can just use 1 line to communicate with S25FL256S flash memory. 

[Tesla DeLorean]

Posted on June 26, 2018 at 19:08

Hard to say, and I'm not going to dig into it, but with the QSPI functions you can specify the width of both the Address and Data portion of the transaction, and you can use the appropriate Commands.