3.2.14.5 DIAG_GPIO_PullUpPullDown

Returns the status of the IO_PORTS_PULLUP_PULLDOWN diagnostic

This function verifies if the pull up or pull down can be enabled for a GPIO.

It performs the following operations:

  1. Sets the direction of both the port pin to input

  2. Enables the pull up or pull down for a GPIO and confirms its status by reading appropriate registers.

DIAG_TEST_STATUS DIAG_GPIO_PullUpPullDown
(
     DIAG_GPIO_PORT_INDEX port, 
     DIAG_GPIO_PORT_PIN pin,
     DIAG_GPIO_PULL_DIR pull_dir
);

Diagnostic verifies the following faults do not exist

  • Cannot set pin to desired status, pullup/pulldown

Operating Mode

  • Interface can be used at POST and ‘On Demand’
Precondition
  • none

Parameters

  • port - gpio port
  • pin - gpio pin
  • pull_dir - enum for pull direction

Returns

  • DIAG_STATUS