ScanTool STN Bootloader - Manual (Page 7)

STN Bootloader
Connect
Start bootloader session. After successfully
receiving this command, the bootloader turns off the
startup timer, and the device will remain in bootloader
mode until it is reset (via hardware reset or a Reset
command). The bootloader will not respond to any
other command with either ‘ACK’ or ‘NACK’ unless it
receives the Connect command.
Reset
Terminate bootloader session, and reset the device.
Send Reset after successfully uploading the firmware,
to restart the device in normal mode.
ResendLast
Resend last response. This command can be used
to recover from a communication error during reception
of a bootloader response (e.g., UART framing error or
a failed CRC check).
5.2 Device Information Commands
Table 7 summarizes device information commands
supported by the current version of STN Bootloader.
These commands can be used in bootloader mode to
request information about the device. All device
information commands must have their data length
field set to 0x0000.
Table 7 – Device Information Commands
Command Name Description
06 GetVersion Get bootloader version
07 GetDevID Get device ID
08 GetHWRev Get hardware revision
0A GetSerialNumber Get serial number
0B GetDeviceName Get Device Name
0F GetFWStatus Get firmware status (valid/invalid)
GetVersion
Get bootloader version. Returns bootloader version
in the following format (data length = 2):
<major><minor>
GetDevID
Get device ID. Returns device ID as a big-endian
16-bit integer (data length = 2). See Appendix C:
Device IDs for the list of possible device IDs.
GetHWRev
Get device hardware revision. Returns device
hardware revision in the following format (data
length = 2):
<major><minor>
GetSerialNumber
Get device serial number. Returns serial number as
8 ASCII characters (data length = 8).
GetDeviceName
Get device name. Returns device name as an
ASCII string. Data length is fixed at 32 bytes. For
strings shorter than 32 bytes, the remaining data bytes
will be padded with 0s.
GetFWStatus
Get firmware status. Reports whether valid
application firmware is present (data length = 1). If
valid firmware is not present, returns 0; any other value
indicates valid firmware.
Use this command to verify that the firmware was
properly programmed after upload.
5.3 Firmware Upload Commands
Table 8 summarizes firmware upload commands
supported by the current version of STN Bootloader,
which are used to upload each firmware image as
specified by the firmware file.
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