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AN4286 Datasheet(PDF) 13 Page - STMicroelectronics

Part # AN4286
Description  SPI protocol used in the STM32 bootloader
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4286 Datasheet(HTML) 13 Page - STMicroelectronics

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Bootloader command set
AN4286
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DocID024458 Rev 2
Figure 9. Get Version: slave side
2.4
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 master.
The STM32 slave sends the bytes as follows.
•
Byte 1: ACK
•
Byte 2: N = the number of bytes – 1 (N = 1), except for current byte and ACKs.
•
Bytes 3-4: PID
–
byte 3 = MSB
–
byte 4 = LSB
•
Byte 5: ACK



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