/**
* \brief Interrupt handler. Record the number of bytes received,
* and then restart a read transfer on the UART if the transfer was stopped.
*/
void TC_UART_Handler(void)
{
uint32_t ul_status;
uint32_t ul_byte_total = 0;
/* Read TC_UART Status. */
ul_status = tc_get_status(TC_UART, TC_UART_CHN);
/* RC compare. */
if ((ul_status & TC_SR_CPCS) == TC_SR_CPCS) {
#ifdef CONF_BOARD_UART0
if (buart_chn_open[0]) {
/* Flush PDC buffer. */
ul_byte_total = UART_BUFFER_SIZE - pdc_read_rx_counter(g_p_uart_pdc0);
if (ul_byte_total > 0) {
if (ul_byte_total == num_bytes_rx_uart0) {
/* Disable timer. */
tc_stop(TC_UART, TC_UART_CHN);
/* Log current size */
gs_ul_size_uart_buf0 = ul_byte_total;
/* Stop DMA UART_RX -> force Uart Handler*/
g_st_uart_rx_packet0.ul_size = 0;
pdc_rx_init(g_p_uart_pdc0, &g_st_uart_rx_packet0, NULL);
} else {
num_bytes_rx_uart0 = ul_byte_total;
}
} else {
num_bytes_rx_uart0 = 0;
}
}
#endif
#ifdef CONF_BOARD_UART1
if (buart_chn_open[1]) {
/* Flush PDC buffer. */
ul_byte_total = UART_BUFFER_SIZE - pdc_read_rx_counter(g_p_uart_pdc1);
if (ul_byte_total > 0) {
if (ul_byte_total == num_bytes_rx_uart1) {
/* Disable timer. */
tc_stop(TC_UART, TC_UART_CHN);
/* Log current size */
gs_ul_size_uart_buf1 = ul_byte_total;
/* Stop DMA UART_RX -> force Uart Handler*/
g_st_uart_rx_packet1.ul_size = 0;
pdc_rx_init(g_p_uart_pdc1, &g_st_uart_rx_packet1, NULL);
} else {
num_bytes_rx_uart1 = ul_byte_total;
}
} else {
num_bytes_rx_uart1 = 0;
}
}
#endif
}
}
/**
* \brief Interrupt handler for TC0.
*
* Display the number of bytes received during the last second and the total
* number of bytes received, and then restart a read transfer on the USART if it
* was stopped.
*/
void TC0_Handler(void)
{
uint32_t ul_status;
static uint32_t bytes_total = 0;
/* Read TC0 status. */
ul_status = tc_get_status(TC0, 0);
/* RC compare. */
if ((ul_status & TC_SR_CPCS) == TC_SR_CPCS) {
if((pdc_read_rx_counter(g_p_pdc) != 0) &&
(pdc_read_rx_counter(g_p_pdc) != BUFFER_SIZE)) {
if(pdc_read_rx_next_counter(g_p_pdc) == 0) {
g_ul_bytes_received += (2 * BUFFER_SIZE - pdc_read_rx_counter(g_p_pdc));
} else {
g_ul_bytes_received += (BUFFER_SIZE - pdc_read_rx_counter(g_p_pdc));
}
memset(gs_dump_buffer, 0, BUFFER_SIZE);
memcpy(gs_dump_buffer, gs_puc_buffer, BUFFER_SIZE -
pdc_read_rx_counter(g_p_pdc));
} else if((pdc_read_rx_counter(g_p_pdc) == BUFFER_SIZE) &&
(pdc_read_rx_next_counter(g_p_pdc) == 0)) {
g_ul_bytes_received += BUFFER_SIZE;
memcpy(gs_dump_buffer, gs_puc_buffer, BUFFER_SIZE);
}
/* Display info. */
bytes_total += g_ul_bytes_received;
memset(g_puc_string, 0, BUFFER_SIZE);
sprintf((char *)g_puc_string, "Bps: %4lu; Tot: %6lu\r\n",
(unsigned long)g_ul_bytes_received,
(unsigned long)bytes_total);
usart_write_line(BOARD_USART, (char *)g_puc_string);
/* Resume transfer */
g_st_packet.ul_addr = (uint32_t)gs_puc_buffer;
g_st_packet.ul_size = BUFFER_SIZE;
g_st_nextpacket.ul_addr = (uint32_t)gs_puc_nextbuffer;
g_st_nextpacket.ul_size = BUFFER_SIZE;
pdc_rx_init(g_p_pdc, &g_st_packet, &g_st_nextpacket);
usart_enable_interrupt(BOARD_USART, US_IER_RXBUFF);
g_ul_bytes_received = 0;
}
}
