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);
}
} //
}
void platform_dputc(char c)
{
if (c == '\n') {
_dputc('\r');
}
while (!uart_is_tx_ready(UART))
;
uart_write(UART, c);
}
/*! \brief Main function. Execution starts here.
*/
int main(void)
{
sysclk_init();
irq_initialize_vectors();
cpu_irq_enable();
/* Initialize the sleep manager */
sleepmgr_init();
/* Initialize the SAM board */
board_init();
/* Serial line [UART] initialization */
uart1_init(CONF_UART_BAUDRATE);
#if WITH_SERIAL_LINE_INPUT
/* If SLIP-radio is enabled, the handler is overridden. */
uart1_set_input(serial_line_input_byte);
#endif
while(!uart_is_tx_ready(CONSOLE_UART));
/* PRINT Contiki Entry String */
PRINTF("Starting ");
PRINTF(CONTIKI_VERSION_STRING);
/* Configure sys-tick for 1 ms */
clock_init();
/* Initialize Contiki Process function */
process_init();
/* rtimer and ctimer should be initialized before radio duty cycling layers*/
rtimer_init();
/* etimer_process should be initialized before ctimer */
process_start(&etimer_process, NULL);
/* Initialize the ctimer process */
ctimer_init();
#ifdef WITH_LED_DEBUGGING
configure_led_debug_pins();
#ifdef WITH_AR9170_WIFI_SUPPORT
configure_ar9170_disconnect_pins();
#endif
#endif
/* rtimer initialization */
rtimer_init();
/* Network protocol stack initialization */
netstack_init();
/* Process init initialization */
procinit_init();
/* Initialize energy estimation routines */
energest_init();
/* Initialize watch-dog process */
watchdog_start();
#ifdef WITH_AR9170_WIFI_SUPPORT
#ifdef WITH_USB_SUPPORT
/* Start network-related system processes. */
#if WITH_UIP6
#ifdef WITH_SLIP
#warning SLIP_RADIO enabled!
process_start(&slip_radio_process, NULL);
#endif
#endif
#else
#error USB support must be enabled.
#endif
#endif
#ifdef WITH_USB_SUPPORT
/* Start ARM Cortex-M3 USB Host Stack */
uhc_start();
configure_ar9170_disconnect_pins();
#endif
/* Autostart all declared [not system] processes */
//autostart_start(autostart_processes);
#if UIP_CONF_IPV6
printf("Tentative link-local IPv6 address: ");
{
uip_ds6_addr_t *lladdr;
int i;
lladdr = uip_ds6_get_link_local(-1);
for(i = 0; i < 7; ++i) {
printf("%02x%02x:", lladdr->ipaddr.u8[i * 2],
lladdr->ipaddr.u8[i * 2 + 1]);
}
printf("%02x%02x\n", lladdr->ipaddr.u8[14], lladdr->ipaddr.u8[15]);
}
if(!UIP_CONF_IPV6_RPL) {
uip_ipaddr_t ipaddr;
int i;
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_TENTATIVE);
printf("Tentative global IPv6 address ");
for(i = 0; i < 7; ++i) {
printf("%02x%02x:",
ipaddr.u8[i * 2], ipaddr.u8[i * 2 + 1]);
}
printf("%02x%02x\n",
ipaddr.u8[7 * 2], ipaddr.u8[7 * 2 + 1]);
}
#endif /* UIP_CONF_IPV6 */
PRINTF("Starting Contiki OS main loop...\n");
while(true) {
/* Contiki Polling System */
process_run();
}
}