void USART_L_init(void)
{
usart_set_mode(&Wireless_L_USART,USART_CMODE_ASYNCHRONOUS_gc);
usart_format_set(&Wireless_L_USART,USART_CHSIZE_8BIT_gc,USART_PMODE_DISABLED_gc,false);
usart_set_rx_interrupt_level(&Wireless_L_USART,USART_INT_LVL_MED);
//usart_set_tx_interrupt_level(&Wireless_L_USART,USART_INT_LVL_MED);
usart_set_baudrate(&Wireless_L_USART,USART_BUADRATE,F_CPU);
usart_tx_enable(&Wireless_L_USART);
usart_rx_enable(&Wireless_L_USART);
}
/**
* \brief Initialize USART in RS232 mode.
*
* This function initializes the USART module in RS232 mode using the
* usart_rs232_options_t configuration structure and CPU frequency.
*
* \param usart The USART module.
* \param opt The RS232 configuration option.
*/
void usart_init_rs232(USART_t *usart, const usart_rs232_options_t *opt)
{
usart_enable_module_clock(usart);
usart_set_mode(usart, USART_CMODE_ASYNCHRONOUS_gc);
usart_format_set(usart, opt->charlength, opt->paritytype,
opt->stopbits);
usart_set_baudrate(usart, opt->baudrate, sysclk_get_per_hz());
usart_tx_enable(usart);
usart_rx_enable(usart);
}
/**
* \brief Initialize USART in RS232 mode.
*
* This function initializes the USART module in RS232 mode using the
* usart_rs232_options_t configuration structure and CPU frequency.
*
* \param usart The USART module.
* \param opt The RS232 configuration option.
*
* \retval true if the initialization was successfull
* \retval false if the initialization failed (error in baud rate calculation)
*/
bool usart_init_rs232(USART_t *usart, const usart_rs232_options_t *opt)
{
bool result;
sysclk_enable_peripheral_clock(usart);
usart_set_mode(usart, USART_CMODE_ASYNCHRONOUS_gc);
usart_format_set(usart, opt->charlength, opt->paritytype,
opt->stopbits);
result = usart_set_baudrate(usart, opt->baudrate, sysclk_get_per_hz());
usart_tx_enable(usart);
usart_rx_enable(usart);
return result;
}
/**
* \brief Test setting different parameters of the USART module
*
* This function calls the different set functions, and verifies that the
* correct values are being set.
*
* \param test Current test case.
*/
static void run_set_functions_test(const struct test_case *test)
{
bool success;
/* Set USART mode and verify that it has been correctly set. */
usart_set_mode(&CONF_UNIT_USART, USART_CMODE_MSPI_gc);
success = (CONF_UNIT_USART.UCSRnC & USART_UMSEL01_gm) ==
USART_CMODE_MSPI_gc;
test_assert_true(test, success,
"Trying to set USART mode to master SPI failed.");
/* Set USART sync mode and verify that it has been correctly set. */
usart_set_mode(&CONF_UNIT_USART, USART_CMODE_SYNCHRONOUS_gc);
success = (CONF_UNIT_USART.UCSRnC & USART_UMSEL01_gm) ==
USART_CMODE_SYNCHRONOUS_gc;
test_assert_true(test, success,
"Trying to set USART mode to sync mode failed.");
/* Test enabling and disabling USART double baud*/
usart_double_baud_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnA & USART_U2X_bm);
test_assert_true(test, success, "Trying to enable USART double baud failed.");
usart_double_baud_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnA & USART_U2X_bm);
test_assert_true(test, success, "Trying to disable USART double baud failed.");
/* Test enabling and disabling USART RX */
usart_rx_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnB & USART_RXEN_bm);
test_assert_true(test, success, "Trying to enable USART RX failed.");
usart_rx_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnB & USART_RXEN_bm);
test_assert_true(test, success, "Trying to disable USART RX failed.");
/* Test enabling and disabling USART TX */
usart_tx_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnB & USART_TXEN_bm);
test_assert_true(test, success, "Trying to enable USART TX failed.");
usart_tx_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnB & USART_TXEN_bm);
test_assert_true(test, success, "Trying to disable USART TX failed.");
/* Test enabling and disabling USART TX complete interrupt*/
usart_tx_complete_interrupt_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnB & USART_TXC_bm);
test_assert_true(test, success, "Trying to enable USART TX Complete interrupt failed.");
usart_tx_complete_interrupt_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnB & USART_TXC_bm);
test_assert_true(test, success, "Trying to disable USART TX Complete interrupt failed.");
/* Test enabling and disabling USART RX complete interrupt*/
usart_rx_complete_interrupt_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnB & USART_RXC_bm);
test_assert_true(test, success, "Trying to enable USART RX Complete interrupt failed.");
usart_rx_complete_interrupt_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnB & USART_RXC_bm);
test_assert_true(test, success, "Trying to disable USART RX Complete interrupt failed.");
/* Test enabling and disabling USART data register empty interrupt*/
usart_data_empty_interrupt_enable(&CONF_UNIT_USART);
success = (CONF_UNIT_USART.UCSRnB & USART_DRIE_bm);
test_assert_true(test, success, "Trying to enable USART data register empty interrupt failed.");
usart_data_empty_interrupt_disable(&CONF_UNIT_USART);
success = !(CONF_UNIT_USART.UCSRnB & USART_DRIE_bm);
test_assert_true(test, success, "Trying to disable USART data register empty interrupt failed.");
/* Try to set format. */
usart_format_set(&CONF_UNIT_USART, USART_CHSIZE_8BIT_gc,
USART_PMODE_EVEN_gc, true);
success = !(CONF_UNIT_USART.UCSRnA & USART_FE_bm);
test_assert_true(test, success,
"Trying to set the Frame Format failed.");
}