PDCA Example for EVK1100 Documentation

Introduction

The Peripheral DMA controller (PDCA) transfers data between on-chip peripheral modules such as USART, SPI, SSC and on- and off-chip memories. Using the PDCA avoids CPU intervention for data transfers, improving the performance of the microcontroller. The PDCA can transfer data from memory to a peripheral or from a peripheral to memory.

The given example is a transfer of an ASCII animation stored in internal flash to a USART output. The ASCII animation is divided in two files (ascii_anim1.h and ascii_anim2.h).

Compilation Info

This software was written for the GNU GCC for AVR32 and IAR Systems compiler for AVR32. Other compilers may or may not work.

Main Files

• pdca_example.c: PDCA application example
• ascii_anim1.h: First part of the animation string definitions
• ascii_anim1.h: Second part of the animation string definitions
• conf_example.h: Board specific example hardware definitions

Configuration Information

This example has been tested with the following configuration:

• EVK1100, EVK1101, UC3C_EK or EVK1104 or EVK1105 evaluation kit
• STK600+RCUC3L routing card
• STK600+RCUC3D routing card

On EVK1100 or EVK1101 or STK600+RCUC3D:
Connect USART1 to a PC serial port via a standard RS232 DB9 cable.

On UC3C_EK:
Connect to the PC via the virtual CDC class USB serial port.

On STK600+RCUC3L connect STK600.PE2 to STK600.RS232 SPARE.TXD and STK600.PE3 to STK600.RS232 SPARE.RXD, and connect the STK600 to a PC serial port via a standard RS232 DB9 cable.

On STK600+RCUC3D connect STK600.PC7 to STK600.RS232 SPARE.TXD and STK600.PD0 to STK600.RS232 SPARE.RXD, and connect the STK600 to a PC serial port via a standard RS232 DB9 cable.

• PC terminal settings:
  • 57600 bps,
  • 8 data bits,
  • no parity bit,
  • 1 stop bit,
  • no flow control.

Contact Information

For further information, visit Atmel AVR32.