2.
Installation and Getting Started
Before using the serial bootloader with a PC host, there are some steps to follow:
1.
Unpack the package to a folder on the PC hard drive.
2.
Connect the PL360G55Cx-EK board to the PC via one of the serial interfaces supported by the
embedded serial bootloader, UART or USB.
2.1.
For a USB interface, the PC could require the installation of a CDC (Communication
Device Class) virtual COM port driver. The package includes an INF file to be used with
Microsoft
®
Windows versions prior to Windows 10 located in:
\common\services\usb\class\cdc\device\
3.
Install a Terminal Emulator PC application (like TeraTerm, for example).
To interact with the embedded serial bootloader from other MCU as host, is it required to implement a
host application which must be able to upload the .bin image following the serial protocol supported by
the embedded firmware.
The PL360G55Cx-EK boards are provided with the embedded serial bootloader pre-programmed in the
Flash memory.
Attention:
The use of the jumper ERASE (J3) erases the Flash memory of the SAMG55
microcontroller, including the serial bootloader application.
If the serial embedded bootloader is not present on the SAMG55J19 device, follow the instructions
described in section
Appendix B: How to Flash the Serial Bootloader Binary
.
2.1
Serial Interface Connections
The embedded bootloader can work with the mikroBUS UART and the USB interfaces provided by the
PL360G55Cx-EK board. The pin assignment of the ports is described in the PL360G55Cx-EK user
manual.
Different interfaces and ports can be enabled at the same time. The embedded bootloader scans them
sequentially for the required handshake packets until one is found.
2.1.1
USB Interface
The USB interface is enumerated in the PC as a virtual COM port. The default port configuration is shown
in
Table 2-1. Default COM Port Settings for Embedded Serial Bootloader Host
Field
Value
Baud Rate
115200
Data Bits
8
Parity
None
Stop Bits
1
PL360G55Cx-EK
Installation and Getting Started
©
2019 Microchip Technology Inc.
User Guide
DS50002878A-page 5