PSoC 6 MCU

[JeHu_3414236]

The bootloader SDK AN213924 says:

PSoC 6 MCU flash has a read-while-write (RWW) capability across 256-KB regions. That is, the bootloader code

may execute in one flash region while updating flash in another region.

My application is large and I cannot reserve 256KB for the bootloader.  I modified the sample bootloader memory config to this:

    flash_app0_core0  (rx)  : ORIGIN = 0x10000000, LENGTH = 0x10000

    flash_app0_core1  (rx)  : ORIGIN = 0x10010000, LENGTH = 0x10000

    flash_app1_core0  (rx)  : ORIGIN = 0x10030000, LENGTH = 0x20000

    flash_app1_core1  (rx)  : ORIGIN = 0x10050000, LENGTH = 0x10000

Bootloader and app1 are both in the same 256KB region and everything still seems to work after I perform the app loading.  Am I allowed to put app1 code in the same 256KB region as bootloader?

[ShipingW_81 · Accepted solution]

It's fine to modify the start address of application lower than 0x10040000, that is, put bootloader and application in a same flash sector, as the write executed by bootloader is blocking function.