unit_tests.c File Reference

Unit tests for I2S driver.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

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

Macros
#define	CMP_BLOCK   32
#define	DMA_CH_FLAG_IN_L   (XDMAC_GS_ST0 << CONF_DMA_CH_IN_L)
#define	DMA_CH_FLAG_IN_R   (XDMAC_GS_ST0 << CONF_DMA_CH_IN_R)
#define	DMA_CH_FLAG_OUT_L   (XDMAC_GS_ST0 << CONF_DMA_CH_OUT_L)
#define	DMA_CH_FLAG_OUT_R   (XDMAC_GS_ST0 << CONF_DMA_CH_OUT_R)
#define	DMA_CH_FLAGS
#define	DMA_DWIDTH   XDMAC_CC_DWIDTH_HALFWORD
#define	SOUND_SAMPLES   0x100
#define	TEST_OUT_LOOP   10

Functions
static bool	check_samples (bool right)
	Return true if samples check is good. More...
static void	config_dma_channel_xfr (uint8_t ch)
int	main (void)
	Run I2SC driver unit tests. More...
static void	prepare_dma_channel (uint8_t ch)
static void	run_i2s_test (const struct test_case *test)
	Test audio data transfer and receive. More...
static void	start_transfer (struct i2s_dev_inst *dev_inst)
	Start transfer for test. More...
static void	stop_transfer (struct i2s_dev_inst *dev_inst)
	Stop transfer for test. More...
static void	wait_transfer (struct i2s_dev_inst *dev_inst)
	Wait transfer done for test. More...

Variables
static const uint32_t	g_dma_dst [4]
static const uint32_t	g_dma_perid [4]
static const uint32_t	g_dma_src [4]
int16_t	input_samples_left [SOUND_SAMPLES *2]
int16_t	input_samples_right [SOUND_SAMPLES *2]
int16_t	off_cmp_left [SOUND_SAMPLES/CMP_BLOCK]
int16_t	off_cmp_right [SOUND_SAMPLES/CMP_BLOCK]
int16_t	output_samples_left [SOUND_SAMPLES *2]
int16_t	output_samples_right [SOUND_SAMPLES *2]
static xdmac_channel_config_t	xdmac_channel_cfg
	XDMA channel configuration. More...

#define CMP_BLOCK   32

#define DMA_CH_FLAG_IN_L   (XDMAC_GS_ST0 << CONF_DMA_CH_IN_L)

#define DMA_CH_FLAG_IN_R   (XDMAC_GS_ST0 << CONF_DMA_CH_IN_R)

#define DMA_CH_FLAG_OUT_L   (XDMAC_GS_ST0 << CONF_DMA_CH_OUT_L)

#define DMA_CH_FLAG_OUT_R   (XDMAC_GS_ST0 << CONF_DMA_CH_OUT_R)

#define DMA_CH_FLAGS

Value:

( 0\
        | DMA_CH_FLAG_OUT_L \
        | DMA_CH_FLAG_IN_L \
        | DMA_CH_FLAG_OUT_R \
        | DMA_CH_FLAG_IN_R \
        )

Referenced by start_transfer(), stop_transfer(), and wait_transfer().

#define DMA_DWIDTH   XDMAC_CC_DWIDTH_HALFWORD

Referenced by config_dma_channel_xfr().

#define SOUND_SAMPLES   0x100

Referenced by check_samples(), and config_dma_channel_xfr().

#define TEST_OUT_LOOP   10

static bool check_samples ( bool  right )

static

Return true if samples check is good.

References input_samples_left, input_samples_right, off_cmp_left, off_cmp_right, output_samples_left, output_samples_right, and SOUND_SAMPLES.

Referenced by run_i2s_test().

static void config_dma_channel_xfr ( uint8_t  ch )

static

References CONF_DMA, CONF_DMA_CH_IN_L, CONF_DMA_CH_IN_R, DMA_DWIDTH, xdmac_channel_config_t::mbr_bc, xdmac_channel_config_t::mbr_cfg, xdmac_channel_config_t::mbr_da, xdmac_channel_config_t::mbr_sa, xdmac_channel_config_t::mbr_ubc, SOUND_SAMPLES, xdmac_channel_set_descriptor_addr(), xdmac_channel_set_descriptor_control(), and xdmac_configure_transfer().

Referenced by start_transfer().

int main

(

void

)

Run I2SC driver unit tests.

References uart_rs232_options::baudrate, board_init(), CONF_UART, CONF_UART_BAUDRATE, CONF_UART_CHAR_LENGTH, CONF_UART_PARITY, CONF_UART_STOP_BITS, DEFINE_TEST_ARRAY, DEFINE_TEST_CASE, DEFINE_TEST_SUITE, run_i2s_test(), stdio_serial_init(), sysclk_init(), and test_suite_run().

static void prepare_dma_channel ( uint8_t  ch )

static

References CONF_DMA, CONF_DMA_ID, pmc_enable_periph_clk(), pmc_is_periph_clk_enabled(), xdmac_channel_disable(), xdmac_channel_disable_interrupt(), xdmac_channel_get_interrupt_status(), xdmac_channel_get_status(), xdmac_channel_set_block_control(), xdmac_channel_set_config(), xdmac_channel_set_descriptor_addr(), xdmac_channel_set_descriptor_control(), xdmac_channel_set_destination_addr(), xdmac_channel_set_source_addr(), xdmac_disable_interrupt(), and xdmac_get_interrupt_status().

Referenced by start_transfer().

static void run_i2s_test ( const struct test_case *  test )

static

Test audio data transfer and receive.

Parameters

test	Current test case.

References check_samples(), CONF_I2SC, i2s_config::data_format, i2s_config::fs_ratio, I2S_DATA_16BIT, i2s_disable(), i2s_enable(), i2s_enable_clocks(), i2s_enable_reception(), i2s_enable_transmission(), I2S_FS_RATE_256, i2s_get_config_defaults(), i2s_init(), i2s_config::loopback, start_transfer(), stop_transfer(), test_assert_true, and wait_transfer().

Referenced by main().

static void start_transfer ( struct i2s_dev_inst *  dev_inst )

static

Start transfer for test.

References CONF_DMA, CONF_DMA_CH_IN_L, CONF_DMA_CH_IN_R, CONF_DMA_CH_OUT_L, CONF_DMA_CH_OUT_R, config_dma_channel_xfr(), DMA_CH_FLAGS, and prepare_dma_channel().

Referenced by run_i2s_test().

static void stop_transfer ( struct i2s_dev_inst *  dev_inst )

static

Stop transfer for test.

References CONF_DMA, and DMA_CH_FLAGS.

Referenced by run_i2s_test().

static void wait_transfer ( struct i2s_dev_inst *  dev_inst )

static

Wait transfer done for test.

References DMA_CH_FLAGS.

Referenced by run_i2s_test().

const uint32_t g_dma_dst[4]

static

Initial value:

= {
    (uint32_t)&CONF_I2SC->I2SC_THR,
    (uint32_t)input_samples_left,
    (uint32_t)&CONF_I2SC->I2SC_THR,
    (uint32_t)input_samples_right
}

const uint32_t g_dma_perid[4]

static

Initial value:

= {
    CONF_DMA_PERID_TX_L,
    CONF_DMA_PERID_RX_L,
    CONF_DMA_PERID_TX_R,
    CONF_DMA_PERID_RX_R
}

const uint32_t g_dma_src[4]

static

Initial value:

= {
    (uint32_t)output_samples_left,
    (uint32_t)&CONF_I2SC->I2SC_RHR,
    (uint32_t)output_samples_right,
    (uint32_t)&CONF_I2SC->I2SC_RHR
}

int16_t input_samples_left[SOUND_SAMPLES *2]

Referenced by check_samples().

int16_t input_samples_right[SOUND_SAMPLES *2]

Referenced by check_samples().

int16_t off_cmp_left[SOUND_SAMPLES/CMP_BLOCK]

Referenced by check_samples().

int16_t off_cmp_right[SOUND_SAMPLES/CMP_BLOCK]

Referenced by check_samples().

int16_t output_samples_left[SOUND_SAMPLES *2]

Referenced by check_samples().

int16_t output_samples_right[SOUND_SAMPLES *2]

Referenced by check_samples().

xdmac_channel_config_t xdmac_channel_cfg

static

XDMA channel configuration.