Lpc2000

Can anyone verify that the code shown is correct?
/Søren

--- In lpc2000@yahoogroups.com, "soren_t_hansen" <soren_t_hansen@y...>
wrote:
>
> Anyone?
> 
> --- In lpc2000@yahoogroups.com, "soren_t_hansen" <soren_t_hansen@y...>
> wrote:
> >
> > Hi there
> > 
> > Im making a system where I'm using all the above mentioned interrupts.
> > I have had the TC0, PWM and the ADC running nicely until now, but when
> > I add the UART0 the TC0 goes dead (it's running a 1 Khz clock)
> > 
> > I want the UART0 to give me interrupts when it receives a byte and
> > only when that occours. When I send data I don't want to receive any
> > interrupts (It's a Master/Slave configuration where I send som
> > commands and the remote unit answers)
> > 
> > I have configured TC0 at Vic slot 0, the ADC at 1 and now the UART0
> at 2.
> > 
> > I've read some posts that could indicate that all those interrupts
> > might not work together. On the other hand, it could be my init or ISR
> > that is wrong ...
> > 
> > My init and ISR for the UART0 is as follows:
> > void UART::init()
> > {
> >   PINSEL0 |= 0x000000005;         // Enable RxD0 and TxD0        
     
> >   U0LCR = 0x03;                   // 8 bits, no Parity, 1 Stop bit 
> >   U0IER = 0;                      // Disable UART0 RX 
> > 
> >   setBaudRate(9600);              // 9600 Baud Rate @ 15MHz VPB
Clock  
> >   
> >   VICVectAddr2 = (unsigned long)UART_ISR;
> >   VICVectCntl2 = 0x20 | 6; /* UART1 Interrupt */
> >   VICIntEnable = 1 << 6;   /* Enable UART1 Interrupt */
> > 
> >   U0FCR = 0x07;             // Enable FIFOs and reset them 
> >   U0IER = 1;                // Enable UART0 RX 
> >   uint32_t dummy = U0IIR;   // Read IrqID - Required to Get Interrupts
> > Started
> > }
> > 
> > void UART::setBaudRate(uint32_t baudRate)
> > {
> >   uint32_t DLreload;
> >   //Hardcoded to 15 MHz PClk (VPBDIV = 0x0)
> >   DLreload = static_cast<uint32_t>((15000000u / baudRate) / 16u);
> >   
> >   U0LCR |= 0x80;           /* Set DLAB */
> >   U0DLL = DLreload;
> >   U0DLM = (DLreload >> 8);
> >   U0LCR &= ~0x80;          /* Clear DLAB */    
> > }
> > 
> >   void UART_ISR(void)
> >   {
> >    
> >     uint8_t interruptMask = U0LSR;  //Also resets interrupts in LSR
> >     
> >     uint8_t IIR = U0IIR;
> >     
> >     //Active low
> >     if((IIR & 0x1) == 0)
> >     {
> >       //Data ready in RxBuffer
> >       if((IIR & 0x04) != 0)
> >       {
> >         if(!(interruptMask & 0x01))
> >         {
> >           uint8_t byte = U0RBR;
> >           //Handle byte ......
> >         }
> >       }
> >     }
> > 
> >     // Acknowledge interrupt in VIC
> >     VICVectAddr = 0u; 
> >   }
> >
>