AN2662 CAN bootloader
Doc ID 14156 Rev 1 55/83
The host sends the messages as follows
Command message: Std ID = 0x31, DLC = 0x05, data[0] = 0xXX: MSB address,... , data[3]
= 0xYY: LSB address, data[4] = N(number of bytes to be written), 0 < N <= 255).
then the host send N/8 message
Data message: Std ID = 0x31, DLC_1 = to 8, data = byte_11, … byte_18…
Data message_M: Std ID = 0x04, DLC_M = 1 to 8, data = byte_m1, …, byte_M8
Note: 1 DLC_1 + DLC_2 + ... DLC_M = 256 maximum
2 After each message the host receives the ACK or NACK message from the device
3 The bootloader does not check the standard ID of the data, so any ID from 0h to 0xFF can
be used. It is recommended to use 0x04.
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