Demand Peripherals
Robotics and Automation Made EasyThe BB4IO peripheral controls the buttons and LEDs on the Baseboard4 FPGA card. BB4IO is part of every DPCore.bin image.
Hardware:
Each BaseBoard4 has three buttons (S1, S2 and S3) and eight LEDs (LED0 to LED7). More information about the Baseboard4 is available here: /cards/baseboard4.html
Resources:
leds : The value of the LEDs as an eight bit hexadecimal number. The LSB controls LED0. This resource is both readable nd writable.buttons : The value of the buttons as a number between 0 and 7. The LSB has the status of Button 1. This resource works with dpget and dpcat.
Examples:
Set the LEDs to 0x66.
dpset bb4io leds 66
Watch for button press and release events as a stream.
dpcat bb4io buttons