static int fh_uart_putc(struct rt_serial_device *serial, char c)
{
struct fh_uart *uart = serial->parent.user_data;
unsigned int ret;
ret = uart_get_status(uart->uart_port);
if(serial->parent.open_flag & RT_DEVICE_FLAG_INT_TX) {
//RT_DEVICE_FLAG_INT_TX
if(c == '\n') {
fh_uart_putc(serial,'\r');
}
if(ret & UART_USR_TFNF) {
uart_putc(uart->uart_port, c);
return 1;
}
//open tx isr here..
uart_enable_irq(uart->uart_port,UART_IER_ETBEI);
return -1;
}
//poll mode
else {
while(!(uart_get_status(uart->uart_port) & UART_USR_TFNF))
;
uart_putc(uart->uart_port, c);
return 1;
}
}
void rt_fh_uart_handler(int vector, void *param)
{
int status;
unsigned int ret;
struct fh_uart *uart;
unsigned int reg_status;
rt_device_t dev = (rt_device_t)param;
uart = (struct fh_uart *)dev->user_data;
status = uart_get_iir_status(uart->uart_port);
if (status & UART_IIR_NOINT)
{
return;
}
if(status & UART_IIR_THREMPTY) {
//first close tx isr
uart_disable_irq(uart->uart_port,UART_IER_ETBEI);
rt_hw_serial_isr((struct rt_serial_device *)dev, RT_SERIAL_EVENT_TX_DONE);
}
else if((status & UART_IIR_CHRTOUT)==UART_IIR_CHRTOUT) {
//bug....
//if no data in rx fifo
reg_status = uart_get_status(uart->uart_port);
if((reg_status & 1<<3) == 0)
ret = uart_getc(uart->uart_port);
}
else {
rt_interrupt_enter();
rt_hw_serial_isr((struct rt_serial_device *)dev, RT_SERIAL_EVENT_RX_IND);
rt_interrupt_leave();
}
}
void UART_Handler(void)
{
tUartControl *pControl;
uint32_t ul_status;
uint8_t c;
pControl = uart_control[0];
/* Read UART Status. */
ul_status = uart_get_status(UART);
if (ul_status & UART_SR_RXRDY)
{
uart_read(UART, &c);
/* Check if buffer has more space
* If no space, data will be discarded
*/
if (str_buf_is_full (&pControl->rx_buffer))
{
pControl->rx_buffer.header.err_overflow = 1;
}
else
{
str_buf_putc (&pControl->rx_buffer, c);
}
}
if (ul_status & UART_SR_TXRDY)
{
uart_disable_interrupt (UART, UART_IER_TXRDY);
while (!str_buf_is_empty (&pControl->tx_buffer))
{
c = str_buf_getc (&pControl->tx_buffer);
uart_write (pControl->uart_def_p, c);
if ( !uart_is_tx_ready (pControl->uart_def_p) )
break;
}
/* If there is no more data to send, disable the transmit
interrupt - else enable it or keep it enabled */
if (str_buf_is_empty (&pControl->tx_buffer))
{
uart_disable_interrupt (UART, UART_IER_TXRDY);
pControl->TxIntEnabled = false;
}
else
{
// Set Tx Interrupt state
pControl->TxIntEnabled = true;
uart_enable_interrupt (UART, UART_IER_TXRDY);
}
} //
}
/**
* \brief Interrupt handler for UART interrupt.
*/
void console_uart_irq_handler(void)
{
/* Get UART status and check if CMP is set */
if (uart_get_status(CONSOLE_UART) & UART_SR_CMP) {
cmp_flag = 1;
/* Disable UART IRQ */
uart_disable_interrupt(CONSOLE_UART, UART_IDR_CMP);
}
}
/**
* \brief Interrupt handler for UART interrupt.
*/
void console_uart_irq_handler(void)
{
/* Get UART status and check if PDC receive buffer is full */
if ((uart_get_status(CONSOLE_UART) & UART_SR_RXBUFF) == UART_SR_RXBUFF) {
/* Configure PDC for data transfer (RX and TX) */
pdc_rx_init(g_p_uart_pdc, &g_pdc_uart_packet, NULL);
pdc_tx_init(g_p_uart_pdc, &g_pdc_uart_packet, NULL);
}
}
/** @brief Interruption handler for UART1
*
*/
void UART1_Handler(void)
{
uint32_t ul_status;
uint16_t us_wr_idx, us_data_count;
uint16_t us_end_size, us_free_size, us_part_size;
/* Read USART Status. */
ul_status = uart_get_status(UART1);
/* Receive buffer is full. */
if (ul_status & US_CSR_ENDRX) {
/* manage data */
us_wr_idx = buart_comm_data_1.us_wq_idx;
us_data_count = buart_comm_data_1.us_rq_count;
us_free_size = RX_UART_BUF1_SIZE - us_data_count;
if (gs_ul_size_uart_buf1 <= us_free_size) {
/* there is enough space to write all data */
us_end_size = RX_UART_BUF1_SIZE - us_wr_idx;
if (us_end_size >= gs_ul_size_uart_buf1) {
/* there is no overflow of us_wq_idx */
memcpy(&buart_comm_data_1.puc_rq_buf[us_wr_idx],
gs_puc_uart_buf1, gs_ul_size_uart_buf1);
/* update counters */
buart_comm_data_1.us_rq_count += gs_ul_size_uart_buf1;
buart_comm_data_1.us_wq_idx += gs_ul_size_uart_buf1;
} else {
/* there is overflow of us_wq_idx -> write in 2
* steps */
memcpy(&buart_comm_data_1.puc_rq_buf[us_wr_idx],
gs_puc_uart_buf1, us_end_size);
us_part_size = gs_ul_size_uart_buf1 - us_end_size;
memcpy(&buart_comm_data_1.puc_rq_buf[0],
&gs_puc_uart_buf1[us_end_size], us_part_size);
/* update counters */
buart_comm_data_1.us_rq_count += gs_ul_size_uart_buf1;
buart_comm_data_1.us_wq_idx = us_part_size;
}
} else { /* there is not enough space to write all data */
tc_start(TC_UART, TC_UART_CHN);
}
/* change RX buffer */
gs_ul_size_uart_buf1 = UART_BUFFER_SIZE;
/* Restart read on buffer. */
g_st_uart_rx_packet1.ul_addr = (uint32_t)gs_puc_uart_buf1;
g_st_uart_rx_packet1.ul_size = UART_BUFFER_SIZE;
pdc_rx_init(g_p_uart_pdc1, &g_st_uart_rx_packet1, NULL);
/* Restart timer. */
tc_start(TC_UART, TC_UART_CHN);
}
}
void UART0_Handler (void){
uint32_t ul_status;
ul_status = uart_get_status(UART0);
if (ul_status & UART_SR_RXRDY){
uart_read(UART0, &uc_char);
if (cont_char == 0){
clear_keys();
}
//Fim do comando, character "Enter"
if (uc_char == 13){
cont_char = 0;
uc_flag = 1;
}
//Implementando Backspace:
else if ( uc_char == 8 ){
keys[--cont_char] = 0;
}
else {
keys[cont_char++] = uc_char;
}
}
}
/*
* For internal use only.
* A common UART interrupt handler that is called for all UART peripherals.
*/
static void local_uart_handler(const portBASE_TYPE uart_index)
{
portBASE_TYPE higher_priority_task_woken = pdFALSE;
uint32_t uart_status;
freertos_pdc_rx_control_t *rx_buffer_definition;
uart_status = uart_get_status(
all_uart_definitions[uart_index].peripheral_base_address);
uart_status &= uart_get_interrupt_mask(
all_uart_definitions[uart_index].peripheral_base_address);
rx_buffer_definition = &(rx_buffer_definitions[uart_index]);
/* Has the PDC completed a transmission? */
if ((uart_status & UART_SR_ENDTX) != 0UL) {
uart_disable_interrupt(
all_uart_definitions[uart_index].peripheral_base_address,
UART_IDR_ENDTX);
/* If the driver is supporting multi-threading, then return the access
mutex. */
if (tx_dma_control[uart_index].peripheral_access_mutex != NULL) {
xSemaphoreGiveFromISR(
tx_dma_control[uart_index].peripheral_access_mutex,
&higher_priority_task_woken);
}
/* if the sending task supplied a notification semaphore, then
notify the task that the transmission has completed. */
if (tx_dma_control[uart_index].transaction_complete_notification_semaphore != NULL) {
xSemaphoreGiveFromISR(
tx_dma_control[uart_index].transaction_complete_notification_semaphore,
&higher_priority_task_woken);
}
}
if ((uart_status & UART_SR_ENDRX) != 0UL) {
/* It is possible to initialise the peripheral to only use Tx and not Rx.
Check that Rx has been initialised. */
configASSERT(rx_buffer_definition->next_byte_to_read);
configASSERT(rx_buffer_definition->next_byte_to_read !=
RX_NOT_USED);
/* Out of DMA buffer, configure the next buffer. Start by moving
the DMA buffer start address up to the end of the previously defined
buffer. */
rx_buffer_definition->rx_pdc_parameters.ul_addr +=
rx_buffer_definition->rx_pdc_parameters.ul_size;
/* If the end of the buffer has been reached, wrap back to the start. */
if (rx_buffer_definition->rx_pdc_parameters.ul_addr >=
rx_buffer_definition->past_rx_buffer_end_address)
{
rx_buffer_definition->rx_pdc_parameters.ul_addr =
rx_buffer_definition->rx_buffer_start_address;
}
/* Reset the Rx DMA to receive data into whatever free space remains in
the Rx buffer. */
configure_rx_dma(uart_index, data_added);
if (rx_buffer_definition->rx_event_semaphore != NULL) {
/* Notify that new data is available. */
xSemaphoreGiveFromISR(
rx_buffer_definition->rx_event_semaphore,
&higher_priority_task_woken);
}
}
/**
* Normally the uart_status can't be "0" when the interrupt happened.
* It happened only when in PDC mode with TXRDY and RXRDY interrupts since
* the flags has been cleared by PDC.
* As the TXRDY is never enabled in this service, here we
* check the RXRDY interrupt case.
*/
if (uart_status == 0UL) {
/* Character has been placed into the Rx buffer. */
if (rx_buffer_definition->rx_event_semaphore != NULL) {
/* Notify that new data is available. */
xSemaphoreGiveFromISR(
rx_buffer_definition->rx_event_semaphore,
&higher_priority_task_woken);
}
}
if ((uart_status & SR_ERROR_INTERRUPTS) != 0) {
/* An error occurred in either a transmission or reception. Abort, and
ensure the peripheral access mutex is made available to tasks. */
uart_reset_status(
all_uart_definitions[uart_index].peripheral_base_address);
if (tx_dma_control[uart_index].peripheral_access_mutex != NULL) {
xSemaphoreGiveFromISR(
tx_dma_control[uart_index].peripheral_access_mutex,
&higher_priority_task_woken);
}
}
/* If giving a semaphore caused a task to unblock, and the unblocked task
has a priority equal to or higher than the currently running task (the task
this ISR interrupted), then higher_priority_task_woken will have
automatically been set to pdTRUE within the semaphore function.
portEND_SWITCHING_ISR() will then ensure that this ISR returns directly to
the higher priority unblocked task. */
portEND_SWITCHING_ISR(higher_priority_task_woken);
}
