Note: Below descriptions apply to BCM4390WCD2 WiFi module with WICED SDK-3.0.x.
Here is how to use Olimex ARM-USB-TINY-H and Segger J-Link Plus programmers to download and debug BCM4390WCD2 WiFi evaluation board. The J-TAG connections for the application processor for Broadcom 4390 WiFi module are routed directly to the USB driver chip and small modifications are needed to connect external programmer.
1. Below are the connections that need to be made between the 20-Pin J-TAG connector on the programmer and the BCM4390WCD2_2 WiFi module.
Olimex ARM-USB-TINY-H OR Segger J-link Plus | BCM4390WCD2_2 WiFi Module Pin | Function |
Pin 1 | TP25 | VREF |
Pin 5 | TP38 | TDI |
Pin 7 | TP39 | TMS |
Pin 9 | TP35 | TCK |
Pin 13 | TP37 | TDO |
Pin 20 | TP40 | GND |
All other pins | Not Connected | - |
2. The attached configuration file replaces ...\tools\OpenOCD\BCM439x.cfg.
3. The command for downloading and debugging the scan example app in ...\apps\snip\scan
For Olimex ARM-USB-TINY-H
snip.scan-BCM94390WCD2-debug JTAG=Olimex_ARM-USB-TINY-H download run
For Segger J-Link
snip.scan-BCM94390WCD2-debug JTAG=jlink download run
Here is a picture of the updated evaluation board with Olimex:
Here is a picture of the updated evaluation board with Segger J-Link:
