A connector for the ARM SWD interface is included on the product example for easy firmware upgrade purposes.
When this interface is connected to a compatible programmer, firmware upgrades can be made directly on the board. The interface is found on the 10 pin connector P1, see the figure below.
Figure 1. Location of SWD interface connector P1
Firmware update of Smart Remote 3 describes how to connect and perform firmware upgrades and debugging of the product example.
Important: Make sure that pin 1 on the P1 connector on the PCA20018 board is
connected to pin 1 of the connector on the programmer unit.
| Pin | Label | Description |
|---|---|---|
| P1_1 | VDD | Reference voltage for programmer |
| P1_2 | SWDIO | Serial wire debug data |
| P1_3 | GND | Ground |
| P1_4 | SWDCLK | Serial wire debug clock |
| P1_5 | GND | Ground |
| P1_6 | NC | No connection |
| P1_7 | NC | No connection |
| P1_8 | NC | No connection |
| P1_9 | GND | Ground |
| P1_10 | NC | No connection |