10.2.2 Response Format – BM70/71 Module to Host MCU

The BM70/71 module returns the following responses:
  • HCI event response – Number of completed packets event (opcode – 0x13) after successfully receiving a formatted HCI-ISDAP command. This also helps the host MCU to know about the acceptance and processing HCI-ISDAP command.
  • HCI-ISDAP command response – With values specific to the HCI-ISDAP read command.

The BM70/71 module returns the HCI-ISDAP command response with values specific to the HCI-ISDAP read command operation. The host MCU can use this information to determine the status of the read operation (success or failure) and the values of the read memory area. The following table provides details about the values specific to this response.

Table 10-5. Read Memory Command Format
ISDAP OpcodeISDAP Data LengthISDAP Data
StartHandleLengthData
Byte Number01-23-45-67-89-0xNNNN
Size (bytes)122222-n
Value0x020x0FFF0xXXXX0x01100xNNNNSee the following table
Table 10-6. ISDAP Data Field Parameters
Byte NumberValueParameter DescriptionLength
9-100xXXXX
HCI-ISDAP read command result
  • 0x0000 – Success
  • 0x0001-0xFFFF – Failure
1 byte
10-n0xXX

Data from read operation.

The amount of data that returns to the host MCU is based on the number of bytes requested to be read in the HCI-ISDAP read command.

2 bytes