flash firmware
To flash firmware onto the CC2540 you have to emulate a CCDebugger device. This is not too difficult because the protocoll is well documented and already implemented for Arduino. But it requires some soldering.
The CC2540 provides debug access through three pins. They are connected to the HM-10's pins as follows:
- DEBUG_CLOCK (DC): Pin 7
- DEBUG_DATA (DD): Pin 8
- RESET_N: Pin 11
The HM-10's pin numbers can be found in it's datasheet:
Now you have to solder three wires to these three pins.
Connect the three wires to your Arduino as follows:
DD -> pin 6
DC -> pin 5
RESET_N -> pin 4
Now upload the CCLoader to your Arduino. Now you can send your binary-file to the Arduino which flashes it onto to the CC2540. Open a command line and type:
cd <CCLoader-dir>
cd Windows
CCLoader.exe <COM Port> <Firmware.bin> 0
Now the firmware gets uploaded which may take a few minutes.