Analog Comparator
Parameters:
ui32Base is the base address of the comparator module.
ui32Comp is the index of the comparator to configure.
ui32Config is the configuration of the comparator.
Description:
This function configures a comparator. The ui32Config parameter is the result of a logical
OR operation between the COMP_TRIG_xxx, COMP_INT_xxx, COMP_ASRCP_xxx, and
COMP_OUTPUT_xxx values.
The COMP_TRIG_xxx term can take on the following values:
COMP_TRIG_NONE to have no trigger to the ADC.
COMP_TRIG_HIGH to trigger the ADC when the comparator output is high.
COMP_TRIG_LOW to trigger the ADC when the comparator output is low.
COMP_TRIG_FALL to trigger the ADC when the comparator output goes low.
COMP_TRIG_RISE to trigger the ADC when the comparator output goes high.
COMP_TRIG_BOTH to trigger the ADC when the comparator output goes low or high.
The COMP_INT_xxx term can take on the following values:
COMP_INT_HIGH to generate an interrupt when the comparator output is high.
COMP_INT_LOW to generate an interrupt when the comparator output is low.
COMP_INT_FALL to generate an interrupt when the comparator output goes low.
COMP_INT_RISE to generate an interrupt when the comparator output goes high.
COMP_INT_BOTH to generate an interrupt when the comparator output goes low or high.
The COMP_ASRCP_xxx term can take on the following values:
COMP_ASRCP_PIN to use the dedicated Comp+ pin as the reference voltage.
COMP_ASRCP_PIN0 to use the Comp0+ pin as the reference voltage (this the same as
COMP_ASRCP_PIN for the comparator 0).
COMP_ASRCP_REF to use the internally generated voltage as the reference voltage.
The COMP_OUTPUT_xxx term can take on the following values:
COMP_OUTPUT_NORMAL to enable a non-inverted output from the comparator to a
device pin.
COMP_OUTPUT_INVERT to enable an inverted output from the comparator to a device
pin.
Returns:
None.
4.2.1.2 ROM_ComparatorIntClear
Clears a comparator interrupt.
Prototype:
void
ROM_ComparatorIntClear(uint32_t ui32Base,
uint32_t ui32Comp)
30 April 8, 2013
To Next Page
Loading...
Need help?
General
