DADA SOM/DADA Hardware/Peripherals/GPIOs
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Peripheral GPIOs[edit | edit source]
The General-Purpose Input/Output (GPIO) peripheral provides dedicated general-purpose pins that can be configured as either inputs or outputs. The GPIO pins are grouped into banks (16 pins per bank and 9 banks per module), which means that each GPIO module provides up to 144 dedicated GPIO. Up to 432 GPIOs (3 modules x 9 banks x 16 pins) are available in the DADA SOM.
Description[edit | edit source]
Each channel in the GPIO modules has the following features:
- Supports 9 banks of 16 GPIO signals
- Supports up to 9 banks of interrupt capable GPIOs
- Interrupts:
- Can enable interrupts for each bank of 16 GPIO signals
- Interrupts can be triggered by rising and/or falling edge, specified for each interrupt capable GPIO signal
- Set/clear functionality: firmware writes 1 to corresponding bit position(s) to set or to clear GPIO signal(s). The firmware processes can toggle GPIO output signals without critical section protection
- Separate Input/Output registers: GPIO output signals can be toggled by direct write to the output register(s) in addition to set/clear
- output register reads in output drive status
