63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
#include "QB-R5F100SL-TB.h"
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#include "uart0.h"
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volatile unsigned char ticks = 0;
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volatile unsigned char flag_1hz = 0;
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__attribute__((interrupt))
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void wdti_handler(void)
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{
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}
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__attribute__((interrupt))
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void it_handler(void)
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{
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++ticks;
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LED1 ^= 1;
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if (0 == (0x07 & ticks))
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{
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flag_1hz = 1;
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}
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}
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int main(void)
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{
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asm("di");
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/* Setup LEDs */
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LED1 = 1;
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LED2 = 1;
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LED1_PIN = 0;
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LED2_PIN = 0;
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/* Setup clocks */
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CMC.cmc = 0x11U; /* Enable XT1, disable X1 */
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CSC.csc = 0x80U; /* Start XT1 and HOCO, stop X1 */
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CKC.ckc = 0x00U;
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/* Delay 1 second */
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register unsigned long int i;
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for (i = 0x000FFFFFUL; i; --i)
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asm("nop");
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OSMC.osmc = 0x00; /* Supply fsub to peripherals, including Interval Timer */
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uart0_init();
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/* Setup 12-bit interval timer */
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RTCEN = 1; /* Enable 12-bit interval timer and RTC */
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ITMK = 1; /* Disable IT interrupt */
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ITPR0 = 0; /* Set interrupt priority - highest */
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ITPR1 = 0;
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ITMC.itmc = 0x8FFFU; /* Set maximum period 4096/32768Hz = 1/8 s, and start timer */
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ITIF = 0; /* Clear interrupt request flag */
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ITMK = 0; /* Enable IT interrupt */
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asm ("ei"); /* Enable interrupts */
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for(;;)
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{
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if (flag_1hz)
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{
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LED2 = 0;
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flag_1hz = 0;
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const char msg[] = "Hello, RL78! [:";
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uart0_puts(msg);
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LED2 = 1;
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}
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asm("halt");
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}
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}
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