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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:

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