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It might be possible by following the porting document. But before starting your porting effort, I would like to mention that the low power modes (the impressive numbers that you have mentioned or discussed) are not really supported in WICED SDK. You have to add support on your own for anything other than STOP mode (which is what the support in WICED Studio is limited to as of now) in 43xxx_Wi-Fi/WICED/platform/MCU/STM32L4xx/peripherals/platform_mcu_powersave.c
Thank you much for replying. Our main concern is the RAM limitation with STM32F429 - so with 640 KBytes RAM the new L4R5 would give more options in the future (preventing us from running out of memory) when we add WIFI, Bluetooth and our application tasks.
After looking into more detail at the STM32L4R5 we found that the internal DMA is significantly different than that for TM32L4A6 (which is supported by WICED-6.4.0) and we are afraid that the UARTS (which use DMA) will not work anymore (the WICED STDIO which is so helpful). We are also afraid that the new L4R5 may have significant differences (other than the DMA) that we may have no time to address. Please take a look at the DMA stream assignment for L4R5 (ref manual page 370) and for L4A6 (ref manual page 340) - this later MCU is supported.
Therefore, we may have to limit ourselves to STM32F469 (which has 320KBytes + 64K of RAM and 2 MBytes Flash), which is less desirable, but maybe safer. --- Thanks, BM
If you are constrained for time, I would also recommend going with STM32F469 since that would be a safer approach.