BADGER-SIM3L1-EK Silicon Labs, BADGER-SIM3L1-EK Datasheet - Page 5

• Manufacturer Part Number: BADGER-SIM3L1-EK
• Description: Development Boards & Kits - ARM Low-Power SiM3L1xx 32-bit MCU Eval Kit
• Manufacturer: Silicon Labs

Specifications of BADGER-SIM3L1-EK

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: SiM3L1xx
• Core: ARM Cortex M3
• Data Bus Width: 32 bit
• Description/function: ToolStick for the Precision32 low-power family
• For Use With: SiM3L1xx

AN757
Occasionally, ambient light conditions will not be ideal for updating the user-defined string over the light sensor
interface. It is important that the iOS device be located in close proximity to the badger board to block out ambient
light when it is transmitting a “dark” pulse. It is equally important to ensure that the iOS screen brightness is set
high enough to generate sufficient light when transmitting a “light” pulse. On iOS 5 and later devices, the screen
brightness will automatically be set to maximum brightness during the transmission and then restored to the user
setting. This feature can be disabled from the configuration menu.
The default transmission rate is 60 Hz (or 60 pulses per second). For operation under non-ideal conditions, the
transmission rate may be slowed down to reduce the chance of experiencing bit errors. Figure 6 shows the
configuration menu on an iOS 4 device.
Figure 6. iOS 4 Device Configuration Menu
9. Turning Off the Badger Board
The badger board can be turned off by holding the push button switch (S1) until four arrows appear, disappear, and
then a single down arrow appears (approximately eight seconds). When turned off, pressing the push button switch
turns on the device.
Rev. 0.2
5