4 Connection and Firmware Download

The Connection tab connects the application to a target system-on-chip (SoC) and includes the connection group, which sets the correct port from the available host-PC serial ports as well as the appropriate baud rate (see Figure 4-1).

Figure 4-1 RT³ Main Working Window After Connection and Firmware Download

To connect the RTTT application to the SoC, perform the following steps:

1. Set the COM port and baud rate fields in the Settings area of the Connection tab.
   Note: The default baud rate is 921600 but can be updated to 3M.
2. Set the firmware and INI file from the git folder in the Files area of the Connection tab.
   1. Click the firmware and INI file path and browse to the location of the file, as shown in Figure 4-2.
      Figure 4-2 Selecting the Firmware Files to Download
   2. Click Load. The RTTT application begins downloading the firmware files entered in the previous steps (see Figure 4-3).
   Figure 4-3 Downloading Firmware Message
3. Select the channel number and frequency from the Channel (Primary) list box in the Channel area.
4. Select the channel bandwidth in the Channel area; click the 20M or 40M button. If the Channel BW is set to 40 MHz, the Primary list box becomes active. Select Upper or Lower channel. Figure 4-4 shows the packet types for Channel 7.
   Note: Upper and lower selection is with respect to the primary channel.
   Figure 4-4 Packet Types for Channel 7