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AN3155 Datasheet(PDF) 11 Page - STMicroelectronics

Part # AN3155
Description  USART protocol used in the STM32 bootloader
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3155 Datasheet(HTML) 11 Page - STMicroelectronics

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AN3155
Bootloader command set
Figure 5. Get Version & Read Protection Status command: device side
1. GV = Get Version & Read Protection Status.
The STM32 sends the bytes as follows:
3.3
Get ID command
The Get ID command is used to get the version of the chip ID (identification). When the
bootloader receives the command, it transmits the product ID to the host.
The STM32 device sends the bytes as follows:
Byte 1:
ACK
Byte 2:
Bootloader version (0 < Version
≤ 255), example: 0x10 = Version 1.0
Byte 3:
Option byte 1: 0x00 to keep the compatibility with generic bootloader protocol
Byte 4:
Option byte 2: 0x00 to keep the compatibility with generic bootloader protocol
Byte 5:
ACK
Byte 1:
ACK



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