Renesas R8C/17 Manual de usuario descargar pdf (Pagina 22)

QDK™

R8C/Tau-NC30

www.state-machine.com/m16c

cm13 = 1; /* Xin Xout */

cm15 = 1; /* XCIN-XCOUT drive capacity select bit : HIGH */

cm05 = 0; /* Xin on */

cm16 = 0; /* main clock = No division mode */

cm17 = 0; /* main clock = No division mode */

cm06 = 0; /* CM16 and CM17 enable */

asm("nop"); /* Wait for stable of oscillation... */

asm("nop");

ocd2 = 0; /* main clock change */

prcr = 0; /* protect on */

/* configure 32kHz clock..., see NOTE02 */

prc0 = 1; /* protect off */

pd4_3 = 0; /* unlock CM0 and CM1 and set GPIO to inputs (XCin/XCout) */

pd4_4 = 0; /* ... */

cm04 = 1; /* Start the 32KHz crystal */

prc0 = 0; /* protect on */

/* start Timer RE running from fc4... */

trecr1 = 0x00; /* stop Timer RE */

trecr2 = 0x00; /* output compare mode, interrupt disabled for now */

trecsr = 0x63; /* fc4 clock source, no 4-bit counter, output compare */

/* set output compare value */

tremin = (uint8_t)((fc_CLK_SPEED/4/2 + BSP_TICKS_PER_SEC/2)

/ BSP_TICKS_PER_SEC - 1);

/* enable the User LEDs */

LED0_DDR = 1;

LED1_DDR = 1;

LED2_DDR = 1;

LED3_DDR = 1;

LED0 = LED_OFF;

LED1 = LED_OFF;

LED2 = LED_OFF;

LED3 = LED_OFF;

if (QS_INIT((void *)0) == 0) { /* initialize the QS software tracing */

Q_ERROR();

}

5.5 Starting Interrupts in QF_onStartup()

QP-nano invokes the

QF_onStartup()

callback just before starting the event loop inside

QF_run()

The

QF_onStartup()

function must start the interrupts configured earlier. In this BSP only the sys-

tem tick interrupt is started.

void QF_onStartup(void) {

comie_trecr2 = 1; /* enable Timer RE output compare interrupt */

tstart_trecr1 = 1; /* start Timer RE */

treic = 3; /* TRE interrupt priority level */

#ifdef Q_SPY

tstart0_trdstr = 1; /* start the QS time-stamp timer */

#endif

}

Listing 10 Configuring and enabling interrupts in the

QF_onStartup()

callback.

20 of 26

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 28

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