用ASF跑SAMD21程序(4)TCC - time

/**

 * \file

 *

 * \brief Empty user application template

 *

 */



/**

 * \mainpage User Application template doxygen documentation

 *

 * \par Empty user application template

 *

 * This is a bare minimum user application template.

 *

 * For documentation of the board, go \ref group_common_boards "here" for a link

 * to the board-specific documentation.

 *

 * \par Content

 *

 * -# Include the ASF header files (through asf.h)

 * -# Minimal main function that starts with a call to system_init()

 * -# Basic usage of on-board LED and button

 * -# "Insert application code here" comment

 *

 */



/*

 * Include header files for all drivers that have been imported from

 * Atmel Software Framework (ASF).

 */

#include <asf.h>



struct tcc_module tcc_instance;



static void tcc_callback_to_toggle_led(struct tcc_module *const module_inst)

{    port_pin_toggle_output_level(LED0_PIN);}

        

static void configure_tcc(void)

{    struct tcc_config config_tcc;

         tcc_get_config_defaults(&config_tcc, TCC0);

         config_tcc.counter.clock_source = GCLK_GENERATOR_1;

         config_tcc.counter.clock_prescaler = TCC_CLOCK_PRESCALER_DIV64;

         config_tcc.counter.period =   2000;

         config_tcc.compare.match[0] =  900;

         config_tcc.compare.match[1] =  930;

         config_tcc.compare.match[2] = 1100;

         config_tcc.compare.match[3] = 1250;

         tcc_init(&tcc_instance, TCC0, &config_tcc);

         tcc_enable(&tcc_instance);}

 static void configure_tcc_callbacks(void)

 {    tcc_register_callback(&tcc_instance, tcc_callback_to_toggle_led,            TCC_CALLBACK_OVERFLOW);

          tcc_register_callback(&tcc_instance, tcc_callback_to_toggle_led,            TCC_CALLBACK_CHANNEL_0);

          tcc_register_callback(&tcc_instance, tcc_callback_to_toggle_led,            TCC_CALLBACK_CHANNEL_1);

          tcc_register_callback(&tcc_instance, tcc_callback_to_toggle_led,            TCC_CALLBACK_CHANNEL_2);

          tcc_register_callback(&tcc_instance, tcc_callback_to_toggle_led,            TCC_CALLBACK_CHANNEL_3); 

          tcc_enable_callback(&tcc_instance, TCC_CALLBACK_OVERFLOW);

          tcc_enable_callback(&tcc_instance, TCC_CALLBACK_CHANNEL_0);

          tcc_enable_callback(&tcc_instance, TCC_CALLBACK_CHANNEL_1);

          tcc_enable_callback(&tcc_instance, TCC_CALLBACK_CHANNEL_2);

          tcc_enable_callback(&tcc_instance, TCC_CALLBACK_CHANNEL_3);}        



int main (void)

{

        system_init();

        configure_tcc();

        configure_tcc_callbacks();



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



        // This skeleton code simply sets the LED to the state of the button.

        while (1) {

                

        }

}