Rev 3 9/21/17
53
41110479
D
D: Hardware Tips
D.1 Dipswitch Settings
The multi-function dipswitch block (SW401) is used to control module signals.
Note:
The ’Default’ switch positions are the settings recommended when using this guide.
Signal
Dip
On/Off
State
1
PWR_ON
On (Default) Enable CF3 module’s POWER_ON signal
Off
Disable POWER_ON signal
2
WIFI_UART1_TX
On
Enable CF3 module’s firmware download (recovery) mode.
Note:
Similar functionality to TP1_BOOT
Off (Default) Normal operation
3
VCC_3V7_ULPM
On (Default) While in ULPM, sensors receive power
Off
While in ULPM, sensors are not powered
4
HL_MODE
On
When combined with LowPower_RESET, indicates that board is in HL mode.
Off (Default) When combined with LowPower_RESET, indicates that board is in WP mode.
5
On (Default) Enable backup battery charging.
Off
Disable backup battery charging.
6
CONS_DIR
On
Console USB connector accesses the Wi-Fi/Bluetooth module’s console.
Note:
To download firmware to the Wi-Fi module, set CONS_DIR OFF and
WIFI_UART1_TX ON.
Off (Default) Console USB connector access the CF3 module’s console.
7
TP1_BOOT
On
Enable CF3 module’s TP1 (boot) signal functionality. Pull the signal low to enter
download mode for firmware updates.
Off (Default) CF3 module functions normally.
8
LowPower_RESET
On (Default) When combined with HL_MODE, indicates that board is in WP mode.
Off
When combined with HL_MODE, indicates that board is in HL mode.