ST STM32F105 series

AN2662 USART bootloader
Doc ID 14156 Rev 1 27/83
Figure 13. Write Memory command: host side
1. WM = Write Memory.
Note: If the start address is invalid, the command is NACKed by the device.
Wait for ACK
or NACK
Wait for ACK
or NACK
End of WM
(1)
NACK
ACK
ai14641
Send 0x31+0xCE
Start WM
(1)
Wait for ACK
or NACK
Send the start address (4 bytes)
& checksum
Send the number of bytes to be written
(1 byte), the data (N + 1) bytes) & checksum
NACK
ACK
NACK
ACK