Demand Peripherals     Robotics and Automation Made Easy

IN32: Thirty-two Channel Input

The IN32 peripheral lets you receive inputs from 32 binary channels. The inputs can be individually configured to send an update when the input value changes.

The IN32 peripherals must be used with the IN32 card.

 

Hardware:

The IN32 has 32 channels of 5 Volt tolerant input. The inputs are on a 32 by 3 pin header. A screw terminal input lets you set the voltages on the second and third pins of the 3-pin headers. The inputs are sampled every 10 milliseconds. The IN32 card uses the ESPI 7474 circuit so it has reliable operation even when mounted some distance from the FPGA card.

More information about the IN32 card can be found here cards/in32.html.

 

Resources:

Resources for the IN32 peripheral include a read-only data register and a read-write configuration register to determine which pins are monitored for changes.

inputs : the value of the thirty-two inputs. A dpget on this resource returns the current values of all 32 input pins. A dpget requires a round trip over the USB-serial link and may take a few milliseconds. Pin values are given as a hexadecimal number with the value of the lowest numbered input in the LSB.

When used with dpcat this resource reports the new value of the pins after one of the monitored pins changes value. Use this resource to wait for changes on the monitored pins.

interrupt : which inputs to monitor. A change on a monitored pin causes a packet to be sent to the host. The packet contains the new values of all 32 inputs and is made available as a line of dpcat output on the 'inputs' resource.

 

Examples:

To monitor all 32 inputs for changes use the following:

      dpset in32 interrupt ffffffff
      dpcat in32 inputs

 

FPGA Defined Peripherals
User Interface
FPGA Configuration
FPGA Buttons & LEDs
Text LCD and Keypad
Quad WS2812 Interface
Quad Slide Pot
Tone Generator
IR Recv/Xmit
6 Digit LCD
RC Decoder
Keyfob RF Decoder
Rotary Encoder Interface
Quad Touch Interface
Motion Control
Dual DC Motor Controller
Dual Quadrature Decoder
Quad 13 Bit Servo
Bipolar Stepper Controller
Unipolar Stepper Controller
Simple Input / Output
Quad Binary Output
Quad Binary Input
Quad GPIO
Octal Input/Output
32 Channel Binary Output
32 Channel Binary Input
Sensors
Octal 12-bit ADC
Quad Ping))) Interface
Octal SRF04 Interface
Quad Event Counter
Instrumentation
Generic I2C
Generic SPI
Octal 8-Bit DAC
Quad Digital Potentiometer
Quad PWM Output
Quad PWM Input
4 Bit Pattern Generator
Real Time Clock
Dual Watchdog Timers
  

Interface Cards
User Interface
Audio Amplifier
IR Recv/xmit
Six Digit LCD Display
Keyfob RF Receiver
Rotary Encoder
Quad Switch Card
Text LCD / keypad
Quad Slide Pot
Quad Touch Interface
Motion Control
Dual 7-amp H-bridge
Quad Open Drain Driver
Quad 10 Amp Relay Card
Input / Output
Octal 8-Bit DAC
Quad Digital Potentiometer
Octal 12-bit ADC
9DOF IMU
Octal SRF04
Quad GPIO
Generic I2C
Generic SPI
USB 2.0 Hub
Real Time Clock
Slot Expander
Octal Input/Output
32 Channel Input
32 Channel Output
Accessories
Power Distribution Card
15 Amp Power Distribution
5 Volt Switching Regulator
ATX Power Break-Out Card
Disk Drive Power Break-Out
MP43 Aluminum Mounting Plate
WW2 Prototyping Card
WW1 Small Prototyping Card