The STM32L052K8u Bootloader is replying to my GoToAddress command with 0x3F. I can't find any documentation that describes reply code 0x3F.
The entry in my STM32L052K8UX_FLASH.ld file says this:
/* Memories definition */
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 8K
FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 64K
}
So, I believe the correct address to send with the GoToAddress command is 0x08000000.
Here are the messages exchanged between the code running on my PC and the UART of my STM32L052K8u - which powered up in Bootloader mode because it sensed the right state of the BOOT pin.
My goal is for my PC to tell the Bootloader exit Bootloader mode and jump to running my application, which is already stored in the flash.
Please advise.
From the PC's perspective:
1. Sending 0x7F to Bootloader...
2. Received 1 bytes (hex): 79
3. Sending Go command to Bootloader: 0x21 0xDE
4. Received 1 bytes (hex): 79
5. Sending go-to-address plus checksum to Bootloader: 0x08 0x00 0x00 0x00 0x08
6. Received 1 bytes (hex): 3F
7. PC reported "Unrecognized status 0x3F in reply from Bootloader. Aborting."
