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AN3154 Fiches technique(PDF) 5 Page - STMicroelectronics

No de pièce AN3154
Description  CAN protocol used in the STM32 bootloader
PDF  34 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3154 Fiches technique(HTML) 5 Page - STMicroelectronics

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AN3154
Bootloader code sequence
33
1
Bootloader code sequence
Figure 1. Bootloader for STM32 with CAN
1. it is recommended to send a frame with a Standard ID = 0x79.
Once the system memory boot mode is entered and the STM32 device has been configured
(for more details refer to application note AN2606 “STM32 system memory boot mode”), the
bootloader code waits for a frame on the CANx_Rx pin. When a detection occurs the CAN
bootloader firmware starts to check the external clock frequency.
Figure 2 shows the flowchart of the frequency check.



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