Reserved, Figure 2: bootloadpiob message protocol, Figure 2 – NavCom Sapphire Rev.J User Manual

Page 80: 21 reserved

Sapphire Technical Reference Manual Rev. J

User Application

Receiver

[BOOTLOADPIOB]NB_PingCmd

[BOOTLOADPIOB]NB_PingR

[BOOTLOADPIOB]NB_BaudCmd

[BOOTLOADPIOB]NB_BaudR

Note 1

Note 2

[BOOTLOADPIOB]NB_PingCmd
[BOOTLOADPIOB]NB_PingCmd

[BOOTLOADPIOB]NB_PingR

[BOOTLOADPIOB]NB_SetupCmd

[BOOTLOADPIOB]NB_Setup

Rep

[BOOTLOADPIOB]NB_LoadDataCmd

[BOOTLOADPIOB]NB_LoadD

ataRep

Note 3

[BOOTLOADPIOB]NB_ChkCrcCmd

[BOOTLOADPIOB]NB_ChkCr

cRep

[BOOTLOADPIOB]NB_ProgCmd

[BOOTLOADPIOB]NB_WriteF

Rep

[BOOTLOADPIOB]NB_ResetCmd

Note 4

Figure 2: BOOTLOADPIOB Message Protocol



The PC should send NB_PingCmd at a rate of 1-2 Hz until a reply is received.



Changing the port baud rate is optional and is ignored if downloading using the
Ethernet or Bluetooth ports.



The PIO firmware download supports a sliding window if the user chooses to use it.
If a NB_LoadDataCmd is not acknowledged, the user must retransmit all messages
in the window. For high speed ports (Ethernet, Bluetooth, USB), the window should
be kept small.



The NB_ResetCmd and NB_ResetRep are used by the cold bootloader but not the
warm bootloader. If desired, the user may send NB_PingCmd messages to detect
when the PIO board has completed the reset sequence.

1.21 Reserved

This manual is related to the following products:

Sapphire Rev.B Sapphire Rev.A Sapphire Rev.D Sapphire Rev.K Sapphire Rev.L Sapphire Rev.F Sapphire Rev.E