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Peripheral Simulation
For STMicroelectronics STR752FR0 — External Interrupts (XTI)
Simulation support for this peripheral or feature is comprised of:
- Dialog boxes which display and allow you to change peripheral configuration.
These simulation capabilities are described below.
External Interrupts Dialog
The External Interrupts Dialog displays the status of all
simulated MCU external interrupts. The line, source, port, mask and
interrupt state for each interrupt is displayed. You may select and
configure each interrupt using the following control groups:
Selected Line
-
XTIMn (Wake Up Mask -
Line n) is set to allow an interrupt or a wake
up event for the selected line.
-
XTITn (Trigger Polarity -
Line n) is set an interrupt pending status
on the rising edge of the input wake up line. If reset, the
interrupt pending status is set on the falling edge.
-
XTIPn (Interrupt Pending -
Line n) is set when an interrupt is triggered
for the selected line.
Mask & Trigger & Pending Bits
-
XTI_MRH (Wake Up Mask - Bits 8-15) are set to
allow an interrupt or a wake up event.
-
XTI_MRL (Wake Up Mask - Bits 0-7) are set to
allow an interrupt or a wake up event.
-
XTI_TRH (Trigger Polarity - Bits 8-15) are
set an interrupt pending status on the rising edge of input
wake up. If reset, the interrupt pending status is set on the
falling edge.
-
XTI_TRL (Trigger Polarity - Bits 0-7) are set
an interrupt pending status on the rising edge of input wake
up. If reset, the interrupt pending status is set on the
falling edge.
-
XTI_PRH (Interrupt Pending - Bits 8-15) are
set when an interrupt is triggered.
-
XTI_PRL (Interrupt Pending - Bits 0-7) are
set when an interrupt is triggered.
Wake Up Control & Software Interrupts
-
XTI_CTRL (Wake Up Control Register) contains
the STOP, ID1S and WKUP-INT bit settings.
-
XTI_SR (Software Interrupt Register) contains
the 8 software interrupt pending bits. Bits are set when
software interrupts are pending.
-
WKUP-INT (Wake Up Interrupt) when set, the
16 wake up lines become wake up sources for exiting the STOP mode.
If reset, the 16 wake up lines can be used to generate interrupt
requests on IRQ5 of the EIC.
-
ID1S (Global Interrupt Mask) is set to enable
XTI interrupts. If reset, XTI interrupts are
disabled.
-
STOP (Stop Bit) setting, resetting then setting
this bit again in sequence (1,0,1) puts the MCU in the STOP
mode. The WKUP-INT must also be set, there must be no pending
bits set and at least 1 mask bit must be set.
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