pio_example2_dip_switch_lights.c File Reference

---

Detailed Description

This example demonstrates PIO functionality.

This examples demonstrates how to use some pins as input and some as output. It routes the status from a set of pins to other pins. See the documentation for settings and how to deploy this example on target.

• Compiler: IAR EWAAVR32 and GNU GCC for AVR32
• Supported devices: All AVR32 devices with a PIO module can be used. The example is written for AP7000 and STK1000.
• AppNote: AVR32111 - Using the AVR32 PIO Controller

Author:

Atmel Corporation: http://www.atmel.com
Support email: avr32@atmel.com

Name

Revision

1.2

RCSfile

pio_example2_dip_switch_lights.c,v

Date

2006/05/10 12:01:41

Definition in file pio_example2_dip_switch_lights.c.

#include "pio.h"

Include dependency graph for pio_example2_dip_switch_lights.c:

Go to the source code of this file.

Defines
#define	INPUT_MASK   0x000000ff
#define	OUTPUT_MASK   0x000000ff
#define	SUCCESS   0
Functions
int	main (void)

---

Define Documentation

#define INPUT_MASK   0x000000ff

Definition at line 70 of file pio_example2_dip_switch_lights.c. Referenced by main().

#define OUTPUT_MASK   0x000000ff

Definition at line 71 of file pio_example2_dip_switch_lights.c. Referenced by main().

#define SUCCESS   0

Definition at line 73 of file pio_example2_dip_switch_lights.c.

---

Function Documentation

int main (  void   )

This function will read the dip switches on the STK1000 and put the status out on the leds. To get it to work, you must connect the input and output correctly on the STK1000. The input (switches) header marked J25 must be connected to the header labeled J1 (PORTB[0..7]). While the output (leds) header marked J15 must be connected to the header marked J3 (PORTC[0..7]) Returns: SUCCESS Definition at line 85 of file pio_example2_dip_switch_lights.c. References INPUT_MASK, OUTPUT_MASK, and SUCCESS. { volatile avr32_pio_t *piob = &AVR32_PIOB; volatile avr32_pio_t *pioc = &AVR32_PIOC; unsigned int input, output; pioc->per = OUTPUT_MASK; piob->per = INPUT_MASK; pioc->oer = OUTPUT_MASK; pioc->puer = OUTPUT_MASK; pioc->codr = OUTPUT_MASK; piob->codr = INPUT_MASK; while(1){ input = ( piob->pdsr & INPUT_MASK); /* get input */ output = ( pioc->pdsr & OUTPUT_MASK); /* get output */ if ( output != input){ pioc->codr = OUTPUT_MASK; /* clear output */ pioc->sodr = (~input & OUTPUT_MASK); /* set output from input */ } } return SUCCESS; }

---