Hi all,
I'm facing problems with triggering the LEDs whenever the tmote sky revceives a
packet over the UART0.
The main problem is that I am not sure how to use the TOS_SIGNAL /
TOS_INTERRUPT correctly.
I am aware that the initialisation of the uart is probably not correct, but i
wanted to have a code, which deals with the interrupt correctly, first.
I will appreciate any comment,
Thanks for your help,
Christopher
BlinkC.nc
#include "Timer.h"
#include "Serial.h"
#include <msp430x16x.h>
//#include "msp430usart.h"
#include <signal.h>
#define USART0RX_VECTOR 18
module BlinkC @safe()
{
uses interface Timer<TMilli> as Timer0;
uses interface Timer<TMilli> as Timer1;
uses interface Timer<TMilli> as Timer2;
uses interface Leds;
uses interface Boot;
uses interface receivebuffer;
}
implementation
{
uint8_t P3SEL;
event void Boot.booted()
{
call Timer0.startPeriodic( 250 );
call Timer1.startPeriodic( 500 );
call Timer2.startPeriodic( 1000 );
}
void InitUSART(char USART0, char USART1, unsigned int baudrate1, unsigned int
baudrate2, char IR0, char IR1)
{
if (USART0) ME1 |= UTXE0 + URXE0; // falls gesetzt, USART0 einschalten
(TX- und RX-teil)
if (USART1) ME2 |= UTXE1 + URXE1; // falls gesetzt, USART1 einschalten
(TX- und RX-teil)
UCTL0 |= CHAR; // 8 data bits, 1 stop bit, no parity
(8N1)
UCTL1 |= CHAR;
UTCTL0 |= SSEL1; // SMCLK als UCLK festlegen
UTCTL1 |= SSEL1;
if (baudrate1==19200)
{
UBR00 = 0xA0; // 19200 baud aus 8 MHz erzeugen
UBR10 = 0x01; // siehe application note tabelle 1,
seite 9
UMCTL0 = 0x00; // keine korrektur der division noetig
}
if (baudrate2==19200)
{
UBR01 = 0xA0; // 19200 baud aus 8 MHz erzeugen
UBR11 = 0x01; // siehe application note tabelle 1,
seite 9
UMCTL1 = 0x00; // keine korrektur der division noetig
}
if (USART0) UCTL0 &= ~SWRST; // USART freigeben
if (USART1) UCTL1 &= ~SWRST;
if (IR0==0) IE1 |= URXIE0; // IR0: 0 -> nur RX-interrupt anschalten
if (IR0==1) IE1 |= UTXIE0; // 1 -> nur TX-interrupt anschalten
if (IR0==2) IE1 |= URXIE0 + UTXIE0; // 2 -> TX- und RX-interrupt
anschalten
if (IR1==1||IR1==2) IFG1 &= ~UTXIFG0; // initales interrupt-flag loeschen
if (IR1==0) IE2 |= URXIE1; // IR1: 0 -> nur RX-interrupt anschalten
if (IR1==1) IE2 |= UTXIE1; // 1 -> nur TX-interrupt anschalten
if (IR1==2) IE2 |= URXIE1 + UTXIE1; // 2 -> TX- und RX-interrupt
anschalten
if (IR1==1||IR1==2) IFG1 &= ~UTXIFG1; // initales interrupt-flag loeschen
}
async event void receivebuffer.fired()
{
call Leds.led0Toggle();
call Leds.led1Toggle();
call Leds.led2Toggle();
}
TOSH_SIGNAL(USART0RX_VECTOR){
signal receivebuffer.fired();
}
event void Timer0.fired()
{
dbg("BlinkC", "Timer 0 fired @ %s.\n", sim_time_string());
call Leds.led0Toggle();
while (!(IFG1 & UTXIFG0)); // warten, bis USART0 TX-buffer
sendebereit
TXBUF0 = 0xF;
}
event void Timer1.fired()
{
dbg("BlinkC", "Timer 1 fired @ %s \n", sim_time_string());
}
event void Timer2.fired()
{
dbg("BlinkC", "Timer 2 fired @ %s.\n", sim_time_string());
}
}
BlinkAppC.nc
configuration BlinkAppC
{
}
implementation
{
components MainC, BlinkC, LedsC;
components new TimerMilliC() as Timer0;
components new TimerMilliC() as Timer1;
components new TimerMilliC() as Timer2;
components receivebuffer;
BlinkC -> MainC.Boot;
BlinkC.Timer0 -> Timer0;
BlinkC.Timer1 -> Timer1;
BlinkC.Timer2 -> Timer2;
BlinkC.Leds -> LedsC;
BlinkC.receivebuffer -> receivebuffer;
}
receivebuffer.nc
interface receivebuffer{
async event void fired();
}
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