unit_test.c File Reference

SAM External Interrupt Unit test.

Copyright (c) 2013-2020 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <stdio_serial.h>
#include <string.h>
#include "conf_test.h"

Functions
static void	cdc_uart_init (void)
	Initialize the USART for unit test. More...
static void	cleanup_extint_callback_mode_test (const struct test_case *test)
	Cleanup function for callback mode test. More...
static void	cleanup_extint_polled_mode_test (const struct test_case *test)
	Cleanup function for polled mode test. More...
static void	extint_user_callback (void)
	External interrupt callback function. More...
int	main (void)
	Run External Interrupt unit tests. More...
static void	run_extint_callback_mode_test (const struct test_case *test)
	Test for external interrupt detection using callback. More...
static void	run_extint_polled_mode_test (const struct test_case *test)
	Test for external interrupt detection by polling. More...
static void	setup_extint_callback_mode_test (const struct test_case *test)
	Setup function for callback mode test. More...
static void	setup_extint_polled_mode_test (const struct test_case *test)
	Setup function for polled mode test. More...

Variables
struct usart_module	cdc_uart_module
struct extint_chan_conf	eic_conf
volatile bool	interrupt_flag = false
struct port_config	pin_conf
volatile bool	result = false

static void cdc_uart_init ( void  )

static

Initialize the USART for unit test.

Initializes the SERCOM USART (SERCOM4) used for sending the unit test status to the computer via the EDBG CDC gateway.

References usart_config::baudrate, cdc_uart_module, CONF_STDIO_BAUDRATE, CONF_STDIO_MUX_SETTING, CONF_STDIO_PINMUX_PAD0, CONF_STDIO_PINMUX_PAD1, CONF_STDIO_PINMUX_PAD2, CONF_STDIO_PINMUX_PAD3, CONF_STDIO_USART, usart_config::mux_setting, usart_config::pinmux_pad0, usart_config::pinmux_pad1, usart_config::pinmux_pad2, usart_config::pinmux_pad3, usart_enable(), and usart_get_config_defaults().

Referenced by main().

static void cleanup_extint_callback_mode_test ( const struct test_case *  test )

static

Cleanup function for callback mode test.

This function disables the callback & external interrupt channel.

Parameters

test	Current test case.

References extint_chan_conf::detection_criteria, eic_conf, EIC_TEST_CHANNEL, EXTINT_CALLBACK_TYPE_DETECT, extint_chan_disable_callback(), extint_chan_set_config(), EXTINT_DETECT_NONE, extint_unregister_callback(), and extint_user_callback().

Referenced by main().

static void cleanup_extint_polled_mode_test ( const struct test_case *  test )

static

Cleanup function for polled mode test.

This function disables the external interrupt channel.

Parameters

test	Current test case.

References extint_chan_conf::detection_criteria, eic_conf, EIC_TEST_CHANNEL, extint_chan_set_config(), and EXTINT_DETECT_NONE.

Referenced by main().

static void extint_user_callback ( void  )

static

External interrupt callback function.

Called by external interrupt driver on interrupt detection.

References interrupt_flag.

Referenced by cleanup_extint_callback_mode_test(), and setup_extint_callback_mode_test().

int main

(

void

)

Run External Interrupt unit tests.

Initializes the system and serial output, then sets up the External Interrupt unit test suite and runs it.

References cdc_uart_init(), cleanup_extint_callback_mode_test(), cleanup_extint_polled_mode_test(), DEFINE_TEST_ARRAY, DEFINE_TEST_CASE, DEFINE_TEST_SUITE, delay_init(), run_extint_callback_mode_test(), run_extint_polled_mode_test(), setup_extint_callback_mode_test(), setup_extint_polled_mode_test(), system_init(), and test_suite_run().

static void run_extint_callback_mode_test ( const struct test_case *  test )

static

Test for external interrupt detection using callback.

This test changes the logic level of PB05 from high to low so that the external interrupt channel detects the edge and calls the callback function.

Detection is tested for both rising and falling edges.

Parameters

test	Current test case.

References extint_chan_conf::detection_criteria, eic_conf, EIC_TEST_CHANNEL, extint_chan_set_config(), EXTINT_DETECT_RISING, GPIO_TEST_PIN_EXTINT, interrupt_flag, port_pin_set_output_level(), and test_assert_true.

Referenced by main().

static void run_extint_polled_mode_test ( const struct test_case *  test )

static

Test for external interrupt detection by polling.

This test changes the logic level of PB05 from high to low so that the external interrupt channel detects the edge.

Detection is tested for both rising and falling edges.

Parameters

test	Current test case.

References delay_ms, extint_chan_conf::detection_criteria, eic_conf, EIC_TEST_CHANNEL, extint_chan_clear_detected(), extint_chan_is_detected(), extint_chan_set_config(), EXTINT_DETECT_RISING, GPIO_TEST_PIN_EXTINT, port_pin_set_output_level(), result, and test_assert_true.

Referenced by main().

static void setup_extint_callback_mode_test ( const struct test_case *  test )

static

Setup function for callback mode test.

This function sets up the GPIO pin, the external interrupt channel & the callback function.

Parameters

test	Current test case.

References extint_chan_conf::detection_criteria, port_config::direction, eic_conf, EIC_TEST_CHANNEL, EIC_TEST_PIN, EIC_TEST_PIN_MUX, EXTINT_CALLBACK_TYPE_DETECT, extint_chan_enable_callback(), extint_chan_get_config_defaults(), extint_chan_set_config(), EXTINT_DETECT_FALLING, EXTINT_PULL_UP, extint_register_callback(), extint_user_callback(), extint_chan_conf::gpio_pin, extint_chan_conf::gpio_pin_mux, extint_chan_conf::gpio_pin_pull, GPIO_TEST_PIN_EXTINT, port_config::input_pull, pin_conf, port_get_config_defaults(), PORT_PIN_DIR_OUTPUT, PORT_PIN_PULL_NONE, port_pin_set_config(), and port_pin_set_output_level().

Referenced by main().

static void setup_extint_polled_mode_test ( const struct test_case *  test )

static

Setup function for polled mode test.

This function sets up the GPIO pin and the external interrupt channel.

Parameters

test	Current test case.

References extint_chan_conf::detection_criteria, port_config::direction, eic_conf, EIC_TEST_CHANNEL, EIC_TEST_PIN, EIC_TEST_PIN_MUX, extint_chan_get_config_defaults(), extint_chan_set_config(), EXTINT_DETECT_FALLING, EXTINT_PULL_UP, extint_chan_conf::gpio_pin, extint_chan_conf::gpio_pin_mux, extint_chan_conf::gpio_pin_pull, GPIO_TEST_PIN_EXTINT, port_config::input_pull, pin_conf, port_get_config_defaults(), PORT_PIN_DIR_OUTPUT, PORT_PIN_PULL_NONE, port_pin_set_config(), and port_pin_set_output_level().

Referenced by main().

struct usart_module cdc_uart_module

Referenced by cdc_uart_init().

struct extint_chan_conf eic_conf

Referenced by cleanup_extint_callback_mode_test(), cleanup_extint_polled_mode_test(), run_extint_callback_mode_test(), run_extint_polled_mode_test(), setup_extint_callback_mode_test(), and setup_extint_polled_mode_test().

volatile bool interrupt_flag = false

Referenced by extint_user_callback(), and run_extint_callback_mode_test().

struct port_config pin_conf

Referenced by setup_extint_callback_mode_test(), and setup_extint_polled_mode_test().

volatile bool result = false

Referenced by run_extint_polled_mode_test(), system_interrupt_is_pending(), and test_case_run().