tc_event_example4_uc3l.c File Reference

#include <avr32/io.h>
#include "intc.h"
#include "compiler.h"
#include "board.h"
#include "power_clocks_lib.h"
#include "gpio.h"
#include "tc.h"

Macros
TC Channel Choice
#define	EXAMPLE_TC   (&AVR32_TC0)
#define	EXAMPLE_TC_CHANNEL   1
#define	EXAMPLE_TC_IRQ_GROUP   AVR32_TC0_IRQ_GROUP
#define	EXAMPLE_TC_IRQ   AVR32_TC0_IRQ1
#define	EXAMPLE_EVENT_PIN   AVR32_PIN_PA11
#define	EXAMPLE_TARGET_DFLL_FREQ_HZ   96000000
#define	EXAMPLE_TARGET_MCUCLK_FREQ_HZ   12000000
#define	EXAMPLE_TARGET_PBACLK_FREQ_HZ   12000000

Functions
static void	init_tc_input (volatile avr32_tc_t *tc, unsigned int channel)
	Initializes the timer/counter capture. More...
int	main (void)
	Main function: More...
static void	tc_irq_handler (void)
	TC interrupt handler. More...

Variables
static volatile int	chan_status = 0
Parameters to pcl_configure_clocks().
static scif_gclk_opt_t	gc_dfllif_ref_opt = { SCIF_GCCTRL_SLOWCLOCK, 0, false }
static pcl_freq_param_t	pcl_dfll_freq_param

#define EXAMPLE_EVENT_PIN   AVR32_PIN_PA11

Referenced by main().

#define EXAMPLE_TARGET_DFLL_FREQ_HZ   96000000

#define EXAMPLE_TARGET_MCUCLK_FREQ_HZ   12000000

#define EXAMPLE_TARGET_PBACLK_FREQ_HZ   12000000

#define EXAMPLE_TC   (&AVR32_TC0)

Referenced by main(), and tc_irq_handler().

#define EXAMPLE_TC_CHANNEL   1

Referenced by main(), and tc_irq_handler().

#define EXAMPLE_TC_IRQ   AVR32_TC0_IRQ1

Referenced by main().

#define EXAMPLE_TC_IRQ_GROUP   AVR32_TC0_IRQ_GROUP

static void init_tc_input ( volatile avr32_tc_t *  tc, unsigned int  channel  )

static

Initializes the timer/counter capture.

References tc_capture_opt_t::channel, TC_BURST_NOT_GATED, TC_CLOCK_RISING_EDGE, TC_CLOCK_SOURCE_TC4, TC_EXT_TRIG_SEL_TIOA, tc_init_capture(), TC_NO_TRIGGER_COMPARE_RC, TC_SEL_NO_EDGE, and TC_SEL_RISING_EDGE.

Referenced by main().

int main

(

void

)

Main function:

• Register the TC interrupt (GCC only)

References Disable_global_interrupt, Enable_global_interrupt, tc_interrupt_t::etrgs, EXAMPLE_EVENT_PIN, EXAMPLE_TC, EXAMPLE_TC_CHANNEL, EXAMPLE_TC_IRQ, gpio_enable_pin_pull_up(), GPIO_FALLING_EDGE, gpio_set_gpio_pin(), init_tc_input(), INTC_init_interrupts(), INTC_register_interrupt(), pcl_configure_clocks(), pcl_dfll_freq_param, PCL_OSC0, pcl_switch_to_osc(), tc_configure_interrupts(), tc_irq_handler(), and tc_start().

static void tc_irq_handler ( void  )

static

TC interrupt handler.

References chan_status, EXAMPLE_TC, EXAMPLE_TC_CHANNEL, gpio_tgl_gpio_pin(), and tc_read_sr().

Referenced by main().

volatile int chan_status = 0

static

Referenced by tc_irq_handler().

scif_gclk_opt_t gc_dfllif_ref_opt = { SCIF_GCCTRL_SLOWCLOCK, 0, false }

static

pcl_freq_param_t pcl_dfll_freq_param

static

Initial value:

=
    {
      .main_clk_src = PCL_MC_DFLL0,
      .cpu_f        = EXAMPLE_TARGET_MCUCLK_FREQ_HZ,
      .pba_f        = EXAMPLE_TARGET_PBACLK_FREQ_HZ,
      .pbb_f        = EXAMPLE_TARGET_PBACLK_FREQ_HZ,
      .dfll_f       = EXAMPLE_TARGET_DFLL_FREQ_HZ,
      .pextra_params = &gc_dfllif_ref_opt
    }

Referenced by main().