sam/drivers/iisc/unit_tests/unit_tests.c File Reference

Unit tests for IIS driver.

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

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

Macros
#define	PDCA_IISC_CHANNEL0   0
#define	PDCA_IISC_CHANNEL1   1
#define	SOUND_SAMPLES   0x100

Functions
int	main (void)
	Run IISC driver unit tests. More...
static void	run_iis_test (const struct test_case *test)
	Test audio data transfer and receive. More...

Variables
volatile uint32_t	flag = true
int16_t	input_samples [SOUND_SAMPLES]
int16_t	output_samples [SOUND_SAMPLES]
static const pdca_channel_config_t	pdca_iisc_config_rx
static const pdca_channel_config_t	pdca_iisc_config_tx

#define PDCA_IISC_CHANNEL0   0

Referenced by run_iis_test().

#define PDCA_IISC_CHANNEL1   1

Referenced by run_iis_test().

#define SOUND_SAMPLES   0x100

Referenced by run_iis_test().

int main

(

void

)

Run IISC driver unit tests.

References uart_rs232_options::baudrate, board_init(), DEFINE_TEST_ARRAY, DEFINE_TEST_CASE, DEFINE_TEST_SUITE, NULL, run_iis_test(), stdio_serial_init(), sysclk_init(), test_suite_run(), and usart_serial_options.

static void run_iis_test ( const struct test_case *  test )

static

Test audio data transfer and receive.

Parameters

test	Current test case.

Since the transfer and receive timing is not under control, we need adjust here the enable sequence and add some delay functions if it's needed.

References iis_config::data_format, delay_us, flag, iis_config::fs_ratio, genclk_config_defaults(), genclk_config_set_divider(), genclk_config_set_source(), genclk_enable(), genclk_enable_source(), GENCLK_SRC_CLK_CPU, IIS_CHANNEL_STEREO, IIS_DATE_16BIT_COMPACT, iis_disable(), iis_enable(), iis_enable_clocks(), iis_enable_reception(), iis_enable_transmission(), IIS_FS_RATE_256, iis_get_config_defaults(), iis_init(), IIS_ONE_DMA_CHANNEL_FOR_BOTH_CHANNELS, IIS_SLOT_LENGTH_16BIT, input_samples, iis_config::loopback, output_samples, PDCA_CH_TRANSFER_COMPLETED, pdca_channel_disable(), pdca_channel_enable(), pdca_channel_set_config(), pdca_channel_write_load(), pdca_disable(), pdca_enable(), pdca_get_channel_status(), PDCA_IISC_CHANNEL0, PDCA_IISC_CHANNEL1, pll_config_init(), pll_enable(), PLL_SRC_OSC0, pll_wait_for_lock(), iis_config::rx_channels, iis_config::rx_dma, iis_config::slot_length, SOUND_SAMPLES, sysclk_set_prescalers(), sysclk_set_source(), SYSCLK_SRC_PLL0, test_assert_true, iis_config::tx_channels, and iis_config::tx_dma.

Referenced by main().

volatile uint32_t flag = true

int16_t input_samples[SOUND_SAMPLES]

Referenced by run_iis_test().

int16_t output_samples[SOUND_SAMPLES]

Referenced by run_iis_test().

const pdca_channel_config_t pdca_iisc_config_rx

static

Initial value:

= {
    .addr = 0,               
    .pid = IISC_PDCA_ID_RX,  
    .size = 0,               
    .r_addr = 0,             
    .r_size = 0,             
    .ring = false,           
    .transfer_size = PDCA_MR_SIZE_WORD 
}

const pdca_channel_config_t pdca_iisc_config_tx

static

Initial value:

= {
    .addr = 0,               
    .pid = IISC_PDCA_ID_TX,  
    .size = 0,               
    .r_addr = 0,             
    .r_size = 0,             
    .ring = false,           
    .transfer_size = PDCA_MR_SIZE_WORD 
}