跑一下XMEGA-B1程序(2)点灯

今天这个程序很简单

首先，新建一个ASF工程，然后选择XMEGA-B1开发板，则该板上的LED及SPI还有USART都已经定义好了。

如下程序：

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#ifndef _XMEGA_B1_XPLAINED_H_

#define _XMEGA_B1_XPLAINED_H_



#include "compiler.h"

#include "conf_board.h"

#include "gpio.h"





/*! \name Miscellaneous data

 */

//! @{



//! Validate board support for the common sensor service.



#define COMMON_SENSOR_PLATFORM



/*! \name Voltages

 */

//! @{

#define        VCC_TARGET      3.30

#define        VCC_ANA         3.30

#define        VCC_USB         5.00

//! @}



/*! \name ADC Connection of the Temperature Sensor

 */

//! @{

#define TEMPERATURE_SENSOR_ADC_MODULE    ADCB

#define TEMPERATURE_SENSOR_ADC_INPUT     ADCCH_POS_PIN0

#define TEMPERATURE_SENSOR_SIGNAL_PIN    IOPORT_CREATE_PIN(PORTB,0)

//! @}



/*! \name ADC Connection of the Light Sensor

 */

//! @{

#define LIGHT_SENSOR_ADC_MODULE         ADCB

#define LIGHT_SENSOR_ADC_INPUT          ADCCH_POS_PIN2

#define LIGHT_SENSOR_SIGNAL_PIN         IOPORT_CREATE_PIN(PORTB,2)

//! @}



/*! \name ADC Connection of the Potentiometer

 */

//! @{

#define POTENTIOMETER_ADC_MODULE         ADCB

#define POTENTIOMETER_ADC_INPUT          ADCCH_POS_PIN1

#define POTENTIOMETER_SIGNAL_PIN         IOPORT_CREATE_PIN(PORTB,1)

//! @}



/*! \name ADC Connection of the External Voltage Input

 */

//! @{

#define EXT_VIN_ADC_MODULE         ADCB

#define EXT_VIN_ADC_INPUT          ADCCH_POS_PIN3

#define EXT_VIN_SIGNAL_PIN         IOPORT_CREATE_PIN(PORTB,3)

//! @}



/*! \name Common ADC module used for on-board sensor.

 */

//! @{

#define BOARD_SENSOR_ADC_MODULE         ADCB

//! @}



/*! \name USER LEDs

 */

//! @{

#define        USERLEDPORT     PORTB

#define        USERLEDMASK     (0xF0)

#define        USERLED0POS     PIN4_bp



static inline void user_led_set(uint8_t b)

{

        USERLEDPORT.OUT = b << USERLED0POS;

}



static inline void user_led_toggle(void)

{

        USERLEDPORT.OUTTGL = USERLEDMASK;

}

//! @}





/*! \name Touch

 */

//! @{

#define        TOUCHPORT       PORTE

#define        TOUCHMASK       (0x0F)

#define        TOUCH0POS       PIN0_bp





static inline bool is_touch0(void)

{

        if (TOUCHPORT.IN & (1<<(TOUCH0POS  ))) return false;

        else return true;

}



static inline bool is_touch1(void)

{

        if (TOUCHPORT.IN & (1<<(TOUCH0POS+1))) return false;

        else return true;

}



/* If USARTE0 is enabled, touch buttons CS2 and CS3 will not work, as they

 * share pins with the USART. These functions are then not defined if the user

 * tries to use them, generating an error rather than

 * the buttons not working. */

#ifndef CONF_BOARD_ENABLE_USARTE0

static inline bool is_touch2(void)

{

        if (TOUCHPORT.IN & (1<<(TOUCH0POS+2))) return false;

        else return true;

}



static inline bool is_touch3(void)

{

        if (TOUCHPORT.IN & (1<<(TOUCH0POS+3))) return false;

        else return true;

}

#endif



static inline uint8_t touch_get(void)

{

        return (((~TOUCHPORT.IN) & TOUCHMASK) << TOUCH0POS);

}

//! @}





/*! \name LCD BACKLIGHT

 */

//! @{

#define        BACKLIGHTPORT        PORTE

#define BACKLIGHT_GPIO        IOPORT_CREATE_PIN(PORTE,5)

#define BACKLIGHT_TIMER TCE0



#ifndef BACKLIGHT_TIMER_FREQUENCY

#define BACKLIGHT_TIMER_FREQUENCY        2000000

#endif



#ifndef        BACKLIGHT_TIMER_COUNT

#define BACKLIGHT_TIMER_COUNT                0x7FFF

#endif



static inline void backlight_on(void)

{

        gpio_set_pin_high(BACKLIGHT_GPIO);

}



static inline void backlight_off(void)

{

        gpio_set_pin_low(BACKLIGHT_GPIO);

}



static inline void backlight_toggle(void)

{

        gpio_toggle_pin(BACKLIGHT_GPIO);

}





//! @}



/*! \name Number of LEDs.

 */

//! @{

#define LED_COUNT   4

//! @}



/*! \name GPIO Connections of LEDs

 */

//! @{

#define LED0_GPIO   IOPORT_CREATE_PIN(PORTB,4)

#define LED1_GPIO   IOPORT_CREATE_PIN(PORTB,5)

#define LED2_GPIO   IOPORT_CREATE_PIN(PORTB,6)

#define LED3_GPIO   IOPORT_CREATE_PIN(PORTB,7)

#define LED_POWER   IOPORT_CREATE_PIN(PORTE,4)

#define LED0        LED0_GPIO

#define LED1        LED1_GPIO

#define LED2        LED2_GPIO

#define LED3        LED3_GPIO

//! @}





/*! \name GPIO Connections of Push Buttons

 * Warning, PB4 to PB7 are available only if JTAG is disabled.

 */

//! @{

#define GPIO_PUSH_BUTTON_0        IOPORT_CREATE_PIN(PORTE,0)

#define GPIO_PUSH_BUTTON_1        IOPORT_CREATE_PIN(PORTE,1)

#define GPIO_PUSH_BUTTON_2        IOPORT_CREATE_PIN(PORTE,2)

#define GPIO_PUSH_BUTTON_3        IOPORT_CREATE_PIN(PORTE,3)

//! @}



/*! \name SPI Connections of the AT45DBX Data Flash Memory

 */

//! @{

#define AT45DBX_SPI           &USARTC0

#define AT45DBX_CS            IOPORT_CREATE_PIN(PORTD,2)

#define AT45DBX_MASTER_SCK    IOPORT_CREATE_PIN(PORTC,5)  // SCK as output

#define AT45DBX_MASTER_MOSI   IOPORT_CREATE_PIN(PORTC,7)  // MOSI as output

#define AT45DBX_MASTER_MISO   IOPORT_CREATE_PIN(PORTC,6)  // MISO as input

#define AT45DBX_SPI_CLK_MASK  SYSCLK_PORT_C

//! @}



//! \name MXT143E Xplained top module

//@{

#define MXT143E_XPLAINED_TWI           &TWIC

#define MXT143E_XPLAINED_USART_SPI     &USARTC0

#define MXT143E_XPLAINED_CS            IOPORT_CREATE_PIN(PORTC, 4)

#define MXT143E_XPLAINED_SCK           IOPORT_CREATE_PIN(PORTC, 7)

#define MXT143E_XPLAINED_MOSI          IOPORT_CREATE_PIN(PORTC, 5)

#define MXT143E_XPLAINED_MISO          IOPORT_CREATE_PIN(PORTC, 6)

#define MXT143E_XPLAINED_CHG           IOPORT_CREATE_PIN(PORTC, 2)

#define MXT143E_XPLAINED_DC            IOPORT_CREATE_PIN(PORTC, 3)

#define MXT143E_XPLAINED_BACKLIGHT     IOPORT_CREATE_PIN(PORTA, 4)

#define MXT143E_XPLAINED_LCD_RESET     IOPORT_CREATE_PIN(PORTA, 6)

//@}



/*! \name Power ON LED management

 *

 */

//! @{

static inline void led_power_on(void)

{

        gpio_set_pin_high(LED_POWER);

}



static inline void led_power_off(void)

{

        gpio_set_pin_low(LED_POWER);

}



/*! \name External oscillator

 */

//@{

#define BOARD_XOSC_HZ          8000000

#define BOARD_XOSC_TYPE        XOSC_TYPE_XTAL

#define BOARD_XOSC_STARTUP_US  2000

//@}



#ifdef CONF_BOARD_LCD_BACKLIGHT_PWM

        void backlight_set_pwm(uint16_t pwm);

        uint16_t backlight_get_pwm(void);

        void backlight_stop_pwm(void);

        void backlight_start_pwm(void);

#endif



#endif  // _XMEGA_B1_XPLAINED_H_

上边的：

#define LED0_GPIO   IOPORT_CREATE_PIN(PORTB,4)
#define LED1_GPIO   IOPORT_CREATE_PIN(PORTB,5)
#define LED2_GPIO   IOPORT_CREATE_PIN(PORTB,6)
#define LED3_GPIO   IOPORT_CREATE_PIN(PORTB,7)
#define LED_POWER   IOPORT_CREATE_PIN(PORTE,4)
#define LED0        LED0_GPIO
#define LED1        LED1_GPIO
#define LED2        LED2_GPIO
#define LED3        LED3_GPIO


则可以看出，用LED0，也可以写LED0_GPIO


看了一下硬件：

这四个管脚都接在了端口B上。

以下是程序：里边的换哪个写法效果都一样地

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#include <asf.h>



int main (void)

{

        /* Insert system clock initialization code here (sysclk_init()). */



        //sysclk_init();

        

        board_init();

        

     //ioport_set_pin_high(LED0);

     //ioport_set_pin_high(LED1);

         //ioport_set_pin_high(LED2);

         //ioport_set_pin_high(LED3);

         ioport_set_pin_high(LED0_GPIO);

         ioport_set_pin_high(LED1_GPIO);

         ioport_set_pin_high(LED2_GPIO);

         ioport_set_pin_high(LED3_GPIO);

         

         

         while(1);        

        



        /* Insert application code here, after the board has been initialized. */

}

以下运行效果：