Peripheral Simulation
For Infineon XC2765X-96F — Port 0 (2 x 8-bit I/O)
Simulation support for this peripheral or feature is comprised of:
- Dialog boxes which display and allow you to change peripheral configuration.
- VTREGs (Virtual Target Registers) which support I/O with the peripheral.
These simulation capabilities are described below.
Parallel Port 0 Dialog
This dialog displays the SFR and pins of Port 0. If this port is
not used for the external data or address/data bus, it may be used as
a 16-bit general purpose I/O port. It is programmed and accessed as
two 8-bit ports.
-
P0H represents the P0H SFR. The HEX value and value of
each bit is displayed and may be changed from this dialog.
-
P0L represents the P0L SFR. The HEX value and value of
each bit is displayed and may be changed from this dialog.
-
DP0H is the port direction SFR for P0H. When DP0H.x=0,
P0H.x is an input. When DP0H.x=1, P0H.x is an output.
-
DP0L is the port direction SFR for P0L. When DP0L.x=0,
P0L.x is an input. When DP0L.x=1, P0L.x is an output.
-
Pins represents the states of the pins on the simulated
MCU. When used as outputs, these have the same value as the P0H or
P0L SFRs. When used as inputs you may set the level of the input
pin to high (1) or low (0).
PORTxH/L VTREG
Data Type: unsigned char
The PORTxH and PORTxL VTREGs represent the I/O pins
of the simulated MCU for Port 0 and Port 1. Most ports have a single
VTREG (like PORT7 or PORT8) but some (like Port 0 and Port 1) have
two VTREGs (PORT0H and PORT0L). You may read PORTxL or
PORTxH to determine the state of the output pins of that port.
For example, in the command window, you may type,
PORT0L
to obtain the value corresponding to the set pins of the lower 8
bits of Port 0. You may also change the input values of port pins by
changing the value of the VTREG. For example,
PORT1H=0xF0
sets bits 4-7 and clears bits 0-3 of Port 1. You may use the
bitwise operators AND(&), OR(|) and XOR(^) to change individual
bits of the PORTx VTREGs. For example:
PORT1L |= 0x01; /* Set P1L.0 Pin */
PORT0H &= ~0x02; /* Clr P0H.1 Pin */
PORT0L ^= 0x80; /* Toggle P0L.7 Pin */