OSPI Driver Issues

[pltmcu-jci]

I'd like to highlight two issues (and potential fixes) I ran into while interfacing the RA6M5 with an octal flash memory device (ISSI IS25LX256)

1. r_ospi_status_sub() assumes 4 dummy clock cycles when reading the device status in not in extended SPI mode which may not work for all devices. Here's what I changed:
   

2. r_ospi_direct_transfer() assumes the byte order which may be incorrect. In my specific case, I needed the DOPI byte order to be byte0, byte1, byte2, byte3. The driver assumes the order setting to be byte1, byte0, byte3, byte2. I believe that this method needs to check the SPI protocol and the byte order then set it accordingly. Here's what I did in my case:
   

[renesas-austin-hansen]

Thank you for reporting these issues. We agree these settings should be configurable and are planning to make improvements in the upcoming FSP 5.0.0 release.