If the firmware must be manually reinstalled for any reason, follow these steps to reinstall the firmware. Make sure the EVM is connected to the SCB.
- Check to see if the GUI can program the firmware manually.
- Plug the SCB controller into the PC
- Launch the GUI
- Check to see if the MCU entered Device Firmware Update (DFU) mode. If so, the GUI may notify you and try to update the firmware to the latest version.
- If the GUI does not update automatically, go to File ➞ Program Device...
- If step 1 is unsuccessful (or if the Program Device button is grayed out), manually configure the MCU on the SCB Controller to DFU Mode through the software or hardware:
- Through software:
- Send the command 'bsl' on the SCB's USB Serial (COM) port.
- Though hardware:
- For safety, turn off and disconnect all load sources and external voltages
- While shorting the two test points labeled DFU (shown in Figure 3-3) with a pair of tweezers (or wire), press and release the RESET button.
With the MCU in DFU mode, upload the firmware through the method outlined in step 1.