GPIO
however, the only meaningful data returned is whether the pin is terminated with a pull-up or
down resistor.
Returns:
None
10.2.1.10 ROM_GPIOPadConfigSet
Sets the pad configuration for the specified pin(s).
Prototype:
void
ROM_GPIOPadConfigSet(uint32_t ui32Port,
uint8_t ui8Pins,
uint32_t ui32Strength,
uint32_t ui32PinType)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_GPIOTABLE is an array of pointers located at ROM_APITABLE[4].
ROM_GPIOPadConfigSet is a function pointer located at ROM_GPIOTABLE[5].
Parameters:
ui32Port is the base address of the GPIO port.
ui8Pins is the bit-packed representation of the pin(s).
ui32Strength specifies the output drive strength.
ui32PinType specifies the pin type.
Description:
This function sets the drive strength and type for the specified pin(s) on the selected GPIO
port. For pin(s) configured as input ports, the pad is configured as requested, but the only real
effect on the input is the configuration of the pull-up or pull-down termination.
The parameter ui32Strength can be one of the following values:
GPIO_STRENGTH_2MA
GPIO_STRENGTH_4MA
GPIO_STRENGTH_8MA
GPIO_STRENGTH_8MA_SC
where GPIO_STRENGTH_xMA specifies either 2, 4, or 8 mA output drive strength, and
GPIO_OUT_STRENGTH_8MA_SC specifies 8 mA output drive with slew control.
The parameter ui32PinType can be one of the following values:
GPIO_PIN_TYPE_STD
GPIO_PIN_TYPE_STD_WPU
GPIO_PIN_TYPE_STD_WPD
GPIO_PIN_TYPE_OD
GPIO_PIN_TYPE_OD_WPU
GPIO_PIN_TYPE_OD_WPD
GPIO_PIN_TYPE_ANALOG
94 April 8, 2013
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