QUADSPI indirect-read only

[Zheng Liang]

Chip: STM32G474

I have a ADC chip that offers SPI-compatible interface, it could achieve below functions in picture.

I tried use QUADSPI to achieve that without instruction, address, alternate, dummy, but only DATA with indirect-read mode, but couldn't trigger it successfully. I found one sequence in datasheet:

But it seems the chip will get fault when I written QUADSPI_CCR.

Could I get data from this ADC by QUADSPI with indirect-read only in this situation?

[Andreas Bolsch]

See ES0430: "2.6.1 QUADSPI cannot be used in indirect read mode when only data phase is activated". Seems to be a general limitation, as this appears in other errata sheets, too.