Texas Instruments Tiva TM4C123GH6PM, User Manual

Page: 156 / 352

Pulse Width Modulator (PWM)
15.2.1.3 ROM_PWMFaultIntClear
Clears the fault interrupt for a PWM module.
Prototype:
void
ROM_PWMFaultIntClear(uint32_t ui32Base)
ROM Location:
ROM_APITABLE
is an array of pointers located at
0x0100.0010
.
ROM_PWMTABLE
is an array of pointers located at
ROM_APITABLE[8]
.
ROM_PWMFaultIntClear
is a function pointer located at
ROM_PWMTABLE[20]
.
Parameters:
ui32Base is the base address of the PWM module.
Description:
Clears the fault interrupt by writing to the appropriate bit of the interrupt status register for the
selected PWM module.
This function clears only the FAULT0 interrupt and is retained for backwards compatibility. It
is recommended that
ROM_PWMFaultIntClearExt() be used instead since it supports all fault
interrupts supported on devices with and without extended PWM fault handling support.
Note:
Because there is a write buffer in the Cortex-M4 processor, it may take several clock cycles
before the interrupt source is actually cleared. Therefore, it is recommended that the interrupt
source be cleared early in the interrupt handler (as opposed to the very last action) to avoid
returning from the interrupt handler before the interrupt source is actually cleared. Failure to
do so may result in the interrupt handler being immediately reentered (because the interrupt
controller still sees the interrupt source asserted).
Returns:
None.
15.2.1.4 ROM_PWMFaultIntClearExt
Clears the fault interrupt for a PWM module.
Prototype:
void
ROM_PWMFaultIntClearExt(uint32_t ui32Base,
uint32_t ui32FaultInts)
ROM Location:
ROM_APITABLE
is an array of pointers located at
0x0100.0010
.
ROM_PWMTABLE
is an array of pointers located at
ROM_APITABLE[8]
.
ROM_PWMFaultIntClearExt
is a function pointer located at
ROM_PWMTABLE[23]
.
Parameters:
ui32Base is the base address of the PWM module.
ui32FaultInts specifies the fault interrupts to clear.
156 April 8, 2013