BlueDuino R2 How to upgrade firmware for CC254X module

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Description

The BlueDuino R2 wires CC2540 UART port to Serial1 directly. So we can upgrade the firmware easily.

CC2540 BlueDuino Rev2
RX TXO (Serial1)
TX RXI (Serial1)
GND GND

Hardware requirements

  • A USB to UART converter such as FTDI usb module. Our CP2102 USB to UART converter is good and cheaper option.
  • Some female to female dupont jumper lines

Software requirements

Getting Start

  • Wire the USB to UART converter and BlueDuino
USB to UART converter BlueDuino Rev2
RX RXI (Serial1)
TX TXO (Serial1)
GND GND
  • Plug the BlueDuino to PC
  • Wire USB to UART converter to PC
  • Open telnet terminal, you will get "OK" when you type "AT". So type "AT+SBLUP", you will get "OK+SBLUP". It's mean the cc254x module is ready for upgrade. It can't accept any other AT command now.
  • Upload an empty sketch to BlueDuino. void setup(){} void loop() {}
  • Open the SerialBootTool, Choose the serial port and baud rate 115200, then choose the firmware
  • Click "Load Image"

Wait a while. You will see the words "Download completed successfully"

You've done!

Firmware

Troubleshooting

  • Please retry some times if you upgrade fails
  • Please disconnect the uart connection when it upgrading