AN3262

Bootloader command set

Doc ID 17845 Rev 2

11/27

3.3

bootloader receives the command, it transmits the device ID to the host.

The STM32 device sends the following bytes:

Byte 1:

ACK

Byte 2:

N = the number of bytes - 1

(N = 1 for STM32), except for current byte and ACKs.

Bytes 3-4: PID (Byte 3 = 0x09, Byte 4 = 0xA8)

Byte 5:

ACK

All information sent by the device starting from the first ACK/NACK to the last ACK/NACK is

contained inside a single 802.15.4 packet as shown in Figure 14.

Figure 12.

1.

GID = Get ID command.

Ai14635

Wait for ACK

or NACK

Receive N = number of bytes – 1

Wait for ACK

or NACK

NACK

ACK

Send 0x02+0xFD

Receive PID

NACK

ACK