usart_example.c File Reference


Detailed Description

USART example application for AVR32.

Author:
Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file usart_example.c.

#include <avr32/io.h>
#include "compiler.h"
#include "board.h"
#include "pm_at32ap7000.h"
#include "gpio.h"
#include "usart.h"

Go to the source code of this file.

Defines

USART Settings
#define EXAMPLE_USART   (&AVR32_USART1)
#define EXAMPLE_USART_RX_FUNCTION   AVR32_USART1_RXD_0_FUNCTION
#define EXAMPLE_USART_RX_PIN   AVR32_USART1_RXD_0_PIN
#define EXAMPLE_USART_TX_FUNCTION   AVR32_USART1_TXD_0_FUNCTION
#define EXAMPLE_USART_TX_PIN   AVR32_USART1_TXD_0_PIN

Functions

int main (void)
 This is an example demonstrating the USART RS232 TX and RX functionalities using the USART driver.


Define Documentation

#define EXAMPLE_USART   (&AVR32_USART1)

Definition at line 98 of file usart_example.c.

Referenced by main().

#define EXAMPLE_USART_RX_FUNCTION   AVR32_USART1_RXD_0_FUNCTION

Definition at line 100 of file usart_example.c.

Referenced by main().

#define EXAMPLE_USART_RX_PIN   AVR32_USART1_RXD_0_PIN

Definition at line 99 of file usart_example.c.

Referenced by main().

#define EXAMPLE_USART_TX_FUNCTION   AVR32_USART1_TXD_0_FUNCTION

Definition at line 102 of file usart_example.c.

Referenced by main().

#define EXAMPLE_USART_TX_PIN   AVR32_USART1_TXD_0_PIN

Definition at line 101 of file usart_example.c.

Referenced by main().


Function Documentation

int main ( void   ) 

This is an example demonstrating the USART RS232 TX and RX functionalities using the USART driver.

Definition at line 116 of file usart_example.c.

References EXAMPLE_USART, EXAMPLE_USART_RX_FUNCTION, EXAMPLE_USART_RX_PIN, EXAMPLE_USART_TX_FUNCTION, EXAMPLE_USART_TX_PIN, USART_1_STOPBIT, USART_FAILURE, usart_get_echo_line(), usart_init_rs232(), USART_NO_PARITY, USART_NORMAL_CHMODE, and usart_write_line().

00117 {
00118   static const gpio_map_t USART_GPIO_MAP =
00119   {
00120     {EXAMPLE_USART_RX_PIN, EXAMPLE_USART_RX_FUNCTION},
00121     {EXAMPLE_USART_TX_PIN, EXAMPLE_USART_TX_FUNCTION}
00122   };
00123 
00124   // USART options.
00125   static const usart_options_t USART_OPTIONS =
00126   {
00127     .baudrate     = 115200,
00128     .charlength   = 8,
00129     .paritytype   = USART_NO_PARITY,
00130     .stopbits     = USART_1_STOPBIT,
00131     .channelmode  = USART_NORMAL_CHMODE
00132   };
00133 
00134   // Reset PM. Makes sure we get the expected clocking after a soft reset (e.g.: JTAG reset)
00135   pm_reset();
00136 
00137   // Assign GPIO to USART.
00138   gpio_enable_module(USART_GPIO_MAP,
00139                      sizeof(USART_GPIO_MAP) / sizeof(USART_GPIO_MAP[0]));
00140 
00141   // Initialize USART in RS232 mode.
00142   usart_init_rs232(EXAMPLE_USART, &USART_OPTIONS, FOSC0);
00143 
00144   // Hello world!
00145   usart_write_line(EXAMPLE_USART, "Hello, this is AT32AP7000 saying hello! (press enter)\n");
00146 
00147   // Press enter to continue.
00148   while (usart_get_echo_line(EXAMPLE_USART) == USART_FAILURE);  // Get and echo characters until end of line.
00149 
00150   usart_write_line(EXAMPLE_USART, "Goodbye.\n");
00151 
00152   while (TRUE);
00153 }


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