/**
* \brief Test PARC functions in callback way.
*
* \param test Current test case.
*/
static void run_parc_callback_test(const struct test_case *test)
{
uint32_t input_data = 0x01;
parc_get_config_defaults(&config);
parc_init(&module_inst, PARC, &config);
parc_enable(&module_inst);
parc_register_callback(&module_inst,
(parc_callback_t)parc_complete_callback, PARC_CALLBACK_DATA_READY);
parc_enable_interrupts(&module_inst, PARC_INTERRUPT_DRDY);
parc_enable_callback(&module_inst, PARC_CALLBACK_DATA_READY);
parc_start_capture(&module_inst);
for (uint32_t i = 0; i < 8; i++) {
callback_data_ready = false;
parc_port_input_simulation(true, input_data);
delay_ms(DELAY_TIME);
test_assert_true(test, callback_data_ready == true,
"Capture data failure");
test_assert_true(test, captured_data == (input_data & DATA_MASK),
"Wrong captured data!");
input_data = 1 << i;
}
parc_disable_interrupts(&module_inst, PARC_INTERRUPT_DRDY);
parc_disable_callback(&module_inst,PARC_CALLBACK_DATA_READY);
parc_stop_capture(&module_inst);
parc_disable(&module_inst);
}
/**
* \brief Test PARC register write/read.
*
* \param test Current test case.
*/
static void run_parc_ctrl_test(const struct test_case *test)
{
parc_get_config_defaults(&config);
parc_init(&module_inst, PARC, &config);
parc_enable(&module_inst);
test_assert_true(test, parc_get_status(&module_inst) == PARC_STATUS_EN,
"Test PARC enable: enable failed");
parc_start_capture(&module_inst);
test_assert_true(test, parc_get_status(&module_inst) ==
(PARC_STATUS_CS | PARC_STATUS_EN),
"Test PARC start: start failed");
parc_stop_capture(&module_inst);
parc_disable(&module_inst);
}
/**
* \brief Test PARC functions in polling way.
*
* \param test Current test case.
*/
static void run_parc_polled_test(const struct test_case *test)
{
uint32_t input_data = 0x01;
/* PARC config */
parc_get_config_defaults(&config);
parc_init(&module_inst, PARC, &config);
parc_enable(&module_inst);
parc_start_capture(&module_inst);
for (uint32_t i = 0; i < 8; i++) {
parc_port_input_simulation(true, input_data);
delay_ms(DELAY_TIME);
test_assert_true(test, parc_is_data_ready(&module_inst) == true,
"Capture on rising edge failure!");
parc_read(&module_inst, &captured_data);
test_assert_true(test, captured_data == (input_data & DATA_MASK),
"Wrong captured data!");
input_data = 1 << i;
}
parc_stop_capture(&module_inst);
parc_disable(&module_inst);
}
/**
* \brief Application entry point for PARC example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint32_t uc_key;
/* Initialize the SAM system. */
sysclk_init();
board_init();
/* Configure UART for debug message output. */
configure_console();
parc_port_source_simulation_config();
//! [parc_variables]
struct parc_module module_inst;
struct parc_config config;
//! [parc_variables]
/* Output example information. */
puts(STRING_HEADER);
/* Configure TC. */
configure_tc();
/* Start timer. */
tc_start(TC0, 0);
//! [parc_get_defaults]
// Get default configuration
parc_get_config_defaults(&config);
//! [parc_get_defaults]
printf("Press y to sample the data when both data enable pins are enabled.\r\n");
printf("Press n to sample the data, don't care the status of the data enable pins.\r\n");
uc_key = 0;
while ((uc_key != 'y') && (uc_key != 'n')) {
usart_read(CONF_UART, &uc_key);
}
if (uc_key == 'y') {
/* Sample the data when both data enable pins are enabled. */
config.smode = PARC_SMODE_PCEN1_AND_PCEN2_H;
ioport_set_pin_level(PIN_PCEN1_INPUT, IOPORT_PIN_LEVEL_HIGH);
ioport_set_pin_level(PIN_PCEN2_INPUT, IOPORT_PIN_LEVEL_HIGH);
printf("Receive data when both data enable pins are enabled.\r\n");
} else {
/* Sample the data, don't care the status of the data enable pins. */
config.smode = PARC_SMODE_ALWAYS;
printf("Receive data, don't care the status of the data enable pins.\r\n");
}
printf("Press y to sample all the data.\r\n");
printf("Press n to sample the data only one out of two.\r\n");
uc_key = 0;
while ((uc_key != 'y') && (uc_key != 'n')) {
usart_read(CONF_UART, &uc_key);
}
if (uc_key == 'y') {
/* Sample all the data. */
config.capture_mode = PARC_BOTH_CAPTURE;
printf("All data are sampled.\r\n");
} else {
/* Sample the data only one out of two. */
config.capture_mode = PARC_EVEN_CAPTURE;
printf("Only one out of two data is sampled, with an even index.\r\n");
}
//! [parc_init_enable_and_start]
//! [parc_init_enable_and_start_1]
// Initialize PARC.
parc_init(&module_inst, PARC, &config);
//! [parc_init_enable_and_start_1]
//! [parc_init_enable_and_start_2]
// Enable the PARC
parc_enable(&module_inst);
// Start capture.
parc_start_capture(&module_inst);
//! [parc_init_enable_and_start_2]
//! [parc_init_enable_and_start]
/* Enable PDCA module clock */
pdca_enable(PDCA);
/* Init PDCA channel with the pdca_options.*/
pdca_channel_set_config(PDCA_PARC_CHANNEL, &PDCA_PARC_OPTIONS);
/* Set callback for PDCA interrupt. */
pdca_channel_set_callback(PDCA_PARC_CHANNEL,
pdca_parc_callback,PDCA_0_IRQn,1,PDCA_IER_RCZ);
/* Enable PDCA channel, start receiving data. */
pdca_channel_enable(PDCA_PARC_CHANNEL);
/* Start read PARC data capture via PDCA. */
pdca_channel_write_load(PDCA_PARC_CHANNEL,
(void *)gs_puc_buffer, BUFFER_SIZE);
/* Main loop. */
while(1) {
}
}
