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Cant get to UART1 interrupt on F067

I used the SI Labs config 2 wizard to generate the following code and then added the interrupt at the bottom. The only thing I do in my main is try to set TI1 to 1 which should signal hardware to jump to the UART1 ISR. If I set a break point in main and in the UART1 ISR, I never get there. Any ideas???
Jeff
Below is code:

#include "c8051F060.h"

void Timer_Init();
void UART_Init();
void Port_IO_Init();
void Oscillator_Init();
void Interrupts_Init();
void Init_Device(void);
void UART1_ISR();
void main();
void Reset_Sources_Init();
void UART1_ISR(void);

void main()
{

TI1 = 1;

}


// Peripheral specific initialization functions,
// Called from the Init_Device() function
void Reset_Sources_Init()
{
WDTCN = 0xDE;
WDTCN = 0xAD;
}

void Timer_Init()
{
SFRPAGE = TIMER01_PAGE;
TCON = 0x40;
TMOD = 0x20;
CKCON = 0x10;
TH1 = 0x40;
}

void UART_Init()
{
SFRPAGE = UART1_PAGE;
SCON1 = 0x50;
}

void Port_IO_Init()
{
// P0.0 - TX1 (UART1), Open-Drain, Digital
// P0.1 - RX1 (UART1), Open-Drain, Digital
// P0.2 - Unassigned, Open-Drain, Digital
// P0.3 - Unassigned, Open-Drain, Digital
// P0.4 - Unassigned, Open-Drain, Digital
// P0.5 - Unassigned, Open-Drain, Digital
// P0.6 - Unassigned, Open-Drain, Digital
// P0.7 - Unassigned, Open-Drain, Digital

// P1.0 - Unassigned, Open-Drain, Digital
// P1.1 - Unassigned, Open-Drain, Digital
// P1.2 - Unassigned, Open-Drain, Digital
// P1.3 - Unassigned, Open-Drain, Digital
// P1.4 - Unassigned, Open-Drain, Digital
// P1.5 - Unassigned, Open-Drain, Digital
// P1.6 - Unassigned, Open-Drain, Digital
// P1.7 - Unassigned, Open-Drain, Digital

// P2.0 - Unassigned, Open-Drain, Digital
// P2.1 - Unassigned, Open-Drain, Digital
// P2.2 - Unassigned, Open-Drain, Digital
// P2.3 - Unassigned, Open-Drain, Digital
// P2.4 - Unassigned, Open-Drain, Digital
// P2.5 - Unassigned, Open-Drain, Digital
// P2.6 - Unassigned, Open-Drain, Digital
// P2.7 - Unassigned, Open-Drain, Digital

SFRPAGE = CONFIG_PAGE;
XBR2 = 0x44;
}

void Oscillator_Init()
{
int i = 0;
SFRPAGE = CONFIG_PAGE;
OSCXCN = 0x67;
for (i = 0; i < 3000; i++); // Wait 1ms for initialization
while ((OSCXCN & 0x80) == 0);
CLKSEL = 0x01;
OSCICN = 0x00;
}

void Interrupts_Init()
{
IE = 0x80;
EIE2 = 0x40;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
Reset_Sources_Init();
Timer_Init();
UART_Init();
Port_IO_Init();
Oscillator_Init();
Interrupts_Init();
}

//-----------------------------------------------------------------------------
// UART1 Interrupt Service Routine
//-----------------------------------------------------------------------------
void UART1_ISR (void) interrupt 20
{
TI1 = 0;


// Clear interrupt flag
}

Parents
  • Thanks everyone for you help. I now have it working and have posted below the code that will jump in the UART1 ISR for anyone that would like to use it as a bare minimum check. My settings are for a Ex. Osc. at 22.1184 Mhz and a baud rate of 57600

    /////////////////////////////////////
    // Generated Initialization File //
    /////////////////////////////////////

    
    #include "c8051F060.h"
    
    void Timer_Init();
    void UART_Init();
    void Port_IO_Init();
    void Oscillator_Init();
    void Interrupts_Init();
    void Init_Device(void);
    void Reset_Sources_Init();
    void UART1_ISR(void);
    
    
    void main()
    {
    Init_Device();
    
    
    
    TI1 = 1;
    
    
    }
    
    
    
    
    // Peripheral specific initialization functions,
    // Called from the Init_Device() function
    void Reset_Sources_Init()
    {
        WDTCN     = 0xDE;
        WDTCN     = 0xAD;
    }
    
    void Timer_Init()
    {
        SFRPAGE   = TIMER01_PAGE;
        TCON      = 0x40;
        TMOD      = 0x20;
        CKCON     = 0x10;
        TH1       = 0x40;
    }
    
    void UART_Init()
    {
        SFRPAGE   = UART1_PAGE;
        SCON1     = 0x50;
    }
    
    void Port_IO_Init()
    {
        // P0.0  -  TX1 (UART1), Open-Drain, Digital
        // P0.1  -  RX1 (UART1), Open-Drain, Digital
        // P0.2  -  Unassigned,  Open-Drain, Digital
        // P0.3  -  Unassigned,  Open-Drain, Digital
        // P0.4  -  Unassigned,  Open-Drain, Digital
        // P0.5  -  Unassigned,  Open-Drain, Digital
        // P0.6  -  Unassigned,  Open-Drain, Digital
        // P0.7  -  Unassigned,  Open-Drain, Digital
    
        // P1.0  -  Unassigned,  Open-Drain, Digital
        // P1.1  -  Unassigned,  Open-Drain, Digital
        // P1.2  -  Unassigned,  Open-Drain, Digital
        // P1.3  -  Unassigned,  Open-Drain, Digital
        // P1.4  -  Unassigned,  Open-Drain, Digital
        // P1.5  -  Unassigned,  Open-Drain, Digital
        // P1.6  -  Unassigned,  Open-Drain, Digital
        // P1.7  -  Unassigned,  Open-Drain, Digital
    
        // P2.0  -  Unassigned,  Open-Drain, Digital
        // P2.1  -  Unassigned,  Open-Drain, Digital
        // P2.2  -  Unassigned,  Open-Drain, Digital
        // P2.3  -  Unassigned,  Open-Drain, Digital
        // P2.4  -  Unassigned,  Open-Drain, Digital
        // P2.5  -  Unassigned,  Open-Drain, Digital
        // P2.6  -  Unassigned,  Open-Drain, Digital
        // P2.7  -  Unassigned,  Open-Drain, Digital
    
        SFRPAGE   = CONFIG_PAGE;
        XBR2      = 0x44;
    }
    
    void Oscillator_Init()
    {
        int i = 0;
        SFRPAGE   = CONFIG_PAGE;
        OSCXCN    = 0x67;
        for (i = 0; i < 3000; i++);  // Wait 1ms for initialization
        while ((OSCXCN & 0x80) == 0);
        CLKSEL    = 0x01;
        OSCICN    = 0x00;
    }
    
    void Interrupts_Init()
    {
        IE        = 0x80;
        EIE2      = 0x40;
    }
    
    // Initialization function for device,
    // Call Init_Device() from your main program
    void Init_Device(void)
    {
        Reset_Sources_Init();
    	Timer_Init();
        UART_Init();
        Port_IO_Init();
        Oscillator_Init();
        Interrupts_Init();
    
    	SFRPAGE = UART1_PAGE;  //Return to page 1
    }
    
    //-----------------------------------------------------------------------------
    // UART1 Interrupt Service Routine
    //-----------------------------------------------------------------------------
    void UART1_ISR (void) interrupt 20
    {
      TI1 	= 0;
    
    
      						// Clear interrupt flag
    }
    
    

Reply
  • Thanks everyone for you help. I now have it working and have posted below the code that will jump in the UART1 ISR for anyone that would like to use it as a bare minimum check. My settings are for a Ex. Osc. at 22.1184 Mhz and a baud rate of 57600

    /////////////////////////////////////
    // Generated Initialization File //
    /////////////////////////////////////

    
    #include "c8051F060.h"
    
    void Timer_Init();
    void UART_Init();
    void Port_IO_Init();
    void Oscillator_Init();
    void Interrupts_Init();
    void Init_Device(void);
    void Reset_Sources_Init();
    void UART1_ISR(void);
    
    
    void main()
    {
    Init_Device();
    
    
    
    TI1 = 1;
    
    
    }
    
    
    
    
    // Peripheral specific initialization functions,
    // Called from the Init_Device() function
    void Reset_Sources_Init()
    {
        WDTCN     = 0xDE;
        WDTCN     = 0xAD;
    }
    
    void Timer_Init()
    {
        SFRPAGE   = TIMER01_PAGE;
        TCON      = 0x40;
        TMOD      = 0x20;
        CKCON     = 0x10;
        TH1       = 0x40;
    }
    
    void UART_Init()
    {
        SFRPAGE   = UART1_PAGE;
        SCON1     = 0x50;
    }
    
    void Port_IO_Init()
    {
        // P0.0  -  TX1 (UART1), Open-Drain, Digital
        // P0.1  -  RX1 (UART1), Open-Drain, Digital
        // P0.2  -  Unassigned,  Open-Drain, Digital
        // P0.3  -  Unassigned,  Open-Drain, Digital
        // P0.4  -  Unassigned,  Open-Drain, Digital
        // P0.5  -  Unassigned,  Open-Drain, Digital
        // P0.6  -  Unassigned,  Open-Drain, Digital
        // P0.7  -  Unassigned,  Open-Drain, Digital
    
        // P1.0  -  Unassigned,  Open-Drain, Digital
        // P1.1  -  Unassigned,  Open-Drain, Digital
        // P1.2  -  Unassigned,  Open-Drain, Digital
        // P1.3  -  Unassigned,  Open-Drain, Digital
        // P1.4  -  Unassigned,  Open-Drain, Digital
        // P1.5  -  Unassigned,  Open-Drain, Digital
        // P1.6  -  Unassigned,  Open-Drain, Digital
        // P1.7  -  Unassigned,  Open-Drain, Digital
    
        // P2.0  -  Unassigned,  Open-Drain, Digital
        // P2.1  -  Unassigned,  Open-Drain, Digital
        // P2.2  -  Unassigned,  Open-Drain, Digital
        // P2.3  -  Unassigned,  Open-Drain, Digital
        // P2.4  -  Unassigned,  Open-Drain, Digital
        // P2.5  -  Unassigned,  Open-Drain, Digital
        // P2.6  -  Unassigned,  Open-Drain, Digital
        // P2.7  -  Unassigned,  Open-Drain, Digital
    
        SFRPAGE   = CONFIG_PAGE;
        XBR2      = 0x44;
    }
    
    void Oscillator_Init()
    {
        int i = 0;
        SFRPAGE   = CONFIG_PAGE;
        OSCXCN    = 0x67;
        for (i = 0; i < 3000; i++);  // Wait 1ms for initialization
        while ((OSCXCN & 0x80) == 0);
        CLKSEL    = 0x01;
        OSCICN    = 0x00;
    }
    
    void Interrupts_Init()
    {
        IE        = 0x80;
        EIE2      = 0x40;
    }
    
    // Initialization function for device,
    // Call Init_Device() from your main program
    void Init_Device(void)
    {
        Reset_Sources_Init();
    	Timer_Init();
        UART_Init();
        Port_IO_Init();
        Oscillator_Init();
        Interrupts_Init();
    
    	SFRPAGE = UART1_PAGE;  //Return to page 1
    }
    
    //-----------------------------------------------------------------------------
    // UART1 Interrupt Service Routine
    //-----------------------------------------------------------------------------
    void UART1_ISR (void) interrupt 20
    {
      TI1 	= 0;
    
    
      						// Clear interrupt flag
    }
    
    

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