DLPU082C August 2021 – March 2024 DLPC7540
There are 88 GPIO pins in the system. Some of these pins are dedicated for system specific operations. Refer to DLPC7540 controller data sheet for the freely available GPIOs. The functions listed below can be used to setup the available GPIOs.
Command Name | Description |
---|---|
GPIO Configuration | Configure GPIO as input or output; in case of output, configure as Standard or OpenDrain type, with default value as HIGH or LOW. |
Set/Get GPIO | Change the state of the output GPIO to HIGH or LOW and to Read the state of input GPIO pin. |
Users are advised to have proper (default) pullup resistance and pulldown resistance on the GPIO pins to avoid problems especially when the controller is in reset or boot-up state. By default, all the freely available GPIOs are configured as INPUT and tri-stated. The system reconfigures them only upon receiving these commands.