sam/components/cmos_image_sensor/ov7740/unit_tests/unit_tests.c File Reference

Unit tests for OV7740 driver.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"
#include <unit_test/suite.h>
#include "stdio_serial.h"
#include "conf_board.h"
#include "conf_clock.h"
#include "conf_test.h"

Macros
#define	PIO_PCMR_DSIZE_WORD   PIO_PCMR_DSIZE(2)
#define	TWI_CLK   (400000UL)

Functions
static uint32_t	capture_init (void)
	Initialize PIO capture and the OV7740 image sensor. More...
static void	init_vsync_interrupts (void)
	Intialize Vsync_Handler. More...
int	main (void)
	Application entry point for image sensor capture example. More...
static void	ov7740_test_capture_process_run (const struct test_case *const test)
	Start capture process. More...
static void	ov7740_test_color_run (const struct test_case *const test)
	Test color of the reference picture from OV7740 image sensor. More...
static void	ov7740_test_initialization_run (const struct test_case *const test)
	Test the OV7740 initialization. More...
static void	pio_capture_init (Pio *const p_pio, uint32_t ul_id)
	Initialize PIO capture for the OV7740 image sensor communication. More...
static void	pio_capture_to_buffer (Pio *const p_pio, uint8_t *p_uc_buf, uint32_t ul_size)
	Capture OV7740 data to a buffer. More...
static uint32_t	test_color (uint8_t *p_uc_ref_color, uint8_t *p_uc_capture_data, uint32_t ul_index_capture)
	Test color of a reference picture. More...
static void	vsync_handler (uint32_t ul_id, uint32_t ul_mask)
	Vertical synchronisation handler for the OV7740 image sensor. More...

Variables
uint8_t	g_auc_capture_buffer [51200]
const uint8_t	g_auc_data_black_color [4]
const uint8_t	g_auc_data_blue_color [4]
const uint8_t	g_auc_data_cyan_color [4]
const uint8_t	g_auc_data_green_color [4]
const uint8_t	g_auc_data_purple_color [4]
const uint8_t	g_auc_data_red_color [4]
const uint8_t	g_auc_data_white_color [4]
const uint8_t	g_auc_data_yellow_color [4]
static volatile uint32_t	g_ul_init_error_flag = false
static volatile uint32_t	g_ul_vsync_flag = false
const usart_serial_options_t	usart_serial_options

#define PIO_PCMR_DSIZE_WORD   PIO_PCMR_DSIZE(2)

Referenced by pio_capture_init().

#define TWI_CLK   (400000UL)

Referenced by capture_init().

static uint32_t capture_init ( void  )

static

Initialize PIO capture and the OV7740 image sensor.

Returns

0 on success, 1 otherwise.

References delay_ms, init_vsync_interrupts(), twi_options::master_clk, ov_configure(), ov_init(), ov_power(), pio_capture_init(), pmc_enable_periph_clk(), PMC_PCK_PRES_CLK_4, twi_options::speed, sysclk_get_cpu_hz(), TEST_PATTERN, TWI_CLK, and twi_master_init().

Referenced by ov7740_test_initialization_run().

static void init_vsync_interrupts ( void  )

static

Intialize Vsync_Handler.

References vsync_handler().

Referenced by capture_init().

int main

(

void

)

Application entry point for image sensor capture example.

Returns

Unused (ANSI-C compatibility).

References board_init(), DEFINE_TEST_ARRAY, DEFINE_TEST_CASE, DEFINE_TEST_SUITE, NULL, ov7740_test_capture_process_run(), ov7740_test_color_run(), ov7740_test_initialization_run(), pmc_enable_pllack(), stdio_serial_init(), sysclk_enable_peripheral_clock(), sysclk_init(), and test_suite_run().

static void ov7740_test_capture_process_run ( const struct test_case *const  test )

static

Start capture process.

References g_auc_capture_buffer, g_ul_init_error_flag, g_ul_vsync_flag, pio_capture_to_buffer(), pio_disable_interrupt(), pio_enable_interrupt(), and test_assert_true.

Referenced by main().

static void ov7740_test_color_run ( const struct test_case *const  test )

static

Test color of the reference picture from OV7740 image sensor.

Parameters

test	Current test case.

References g_auc_capture_buffer, g_auc_data_black_color, g_auc_data_blue_color, g_auc_data_cyan_color, g_auc_data_green_color, g_auc_data_purple_color, g_auc_data_red_color, g_auc_data_white_color, g_auc_data_yellow_color, test_assert_true, and test_color().

Referenced by main().

static void ov7740_test_initialization_run ( const struct test_case *const  test )

static

Test the OV7740 initialization.

Parameters

test	Current test case.

References capture_init(), g_ul_init_error_flag, and test_assert_true.

Referenced by main().

static void pio_capture_init ( Pio *const  p_pio, uint32_t  ul_id  )

static

Initialize PIO capture for the OV7740 image sensor communication.

Parameters

p_pio	PIO instance to be configured in PIO capture mode.
ul_id	Corresponding PIO ID.

References PIO_PCMR_DSIZE_WORD, and pmc_enable_periph_clk().

Referenced by capture_init().

static void pio_capture_to_buffer ( Pio *const  p_pio, uint8_t *  p_uc_buf, uint32_t  ul_size  )

static

Capture OV7740 data to a buffer.

Parameters

p_pio	PIO instance which will capture data from OV7740 iamge sensor.
p_uc_buf	Buffer address where captured data must be stored.
ul_size	Data frame size.

Referenced by ov7740_test_capture_process_run().

static uint32_t test_color ( uint8_t *  p_uc_ref_color, uint8_t *  p_uc_capture_data, uint32_t  ul_index_capture  )

static

Test color of a reference picture.

Parameters

p_uc_ref_color	Buffer which contains the reference color.
p_uc_capture_data	Buffer which contains data from the captured picture.
ul_index_capture	Index in p_uc_capture_data.

Returns

1 on error; 0 if no difference between picture data and corresponding color reference was found.

Referenced by ov7740_test_color_run().

static void vsync_handler ( uint32_t  ul_id, uint32_t  ul_mask  )

static

Vertical synchronisation handler for the OV7740 image sensor.

References g_ul_vsync_flag, and UNUSED.

Referenced by init_vsync_interrupts().

uint8_t g_auc_capture_buffer[51200]

Referenced by ov7740_test_capture_process_run(), and ov7740_test_color_run().

const uint8_t g_auc_data_black_color[4]

Initial value:

= {
    0xFF, 
    0x80, 
    0xFF, 
    0x80  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_blue_color[4]

Initial value:

= {
    0xE5, 
    0x04, 
    0xE5, 
    0x90  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_cyan_color[4]

Initial value:

= {
    0x6F, 
    0x6F, 
    0x6F, 
    0xFB  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_green_color[4]

Initial value:

= {
    0x88, 
    0xFB, 
    0x88, 
    0xFB  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_purple_color[4]

Initial value:

= {
    0xA3, 
    0x04, 
    0xA3, 
    0x04  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_red_color[4]

Initial value:

= {
    0xBD, 
    0x94, 
    0xBD, 
    0x04  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_white_color[4]

Initial value:

= {
    0x33, 
    0x80, 
    0x33, 
    0x80  
}

Referenced by ov7740_test_color_run().

const uint8_t g_auc_data_yellow_color[4]

Initial value:

= {
    0x49, 
    0xFB, 
    0x49, 
    0x72  
}

Referenced by ov7740_test_color_run().

volatile uint32_t g_ul_init_error_flag = false

static

Referenced by ov7740_test_capture_process_run(), and ov7740_test_initialization_run().

volatile uint32_t g_ul_vsync_flag = false

static

Referenced by ov7740_test_capture_process_run(), and vsync_handler().

const usart_serial_options_t usart_serial_options

Initial value:

= {
    .baudrate   = CONF_TEST_BAUDRATE,
    .charlength = CONF_TEST_CHARLENGTH,
    .paritytype = CONF_TEST_PARITY,
    .stopbits   = CONF_TEST_STOPBITS
}

Referenced by main(), and prvSetupHardware().