Description

The OPEN_BSL_CMD_DOWNLOAD_SEGMENT is used to download/write the given memory segment with given data bytes

This command can be enabled by using the OPEN_BSL_CONFIG_SUPPORT_CMD_DOWNLOAD_SEGMENT compile options in OpenBSL_Config.h

Depeding on the device target hardware (e.g. target device with flash memory), it might necessary to erase the memory section first (e.g. with OPEN_BSL_CMD_ERASE_SEGMENT) before writing the bytes.

Packet Format

REQUEST packet format

| CMD | LEN | START_ADDR | BYTE_0 | ..... | BYTE_N-1 | CHKSUM |

Field Name	Length	Description
CMD	1 byte	OPEN_BSL_CMD_DOWNLOAD_SEGMENT (0x07)
LEN	1 byte	packet length from START_ADDR to CHKSUM
START_ADDR	4 bytes	start address (LSB first) of the memory area to be written
BYTE_0	1 byte	data byte index 0
BYTE_N-1	1 byte	data byte index N-1, where N is the number of data to be written
CHKSUM	2 bytes	16 bit packet checksum (LSB first), calculated starting from START_ADDR to BYTE_N-1

Positive RESPONSE packet format:

| RESP |

Field Name	Length	Description
RESP	1 byte	(OPEN_BSL_CMD_DOWNLOAD_SEGMENT\|OPEN_BSL_RESP_BIT_MASK) (0x87)