43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
// led blink example Copyright (C) 2014 Diego Herranz
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#define NO_BIT_DEFINES
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#include <pic14regs.h>
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#include <stdint.h>
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// Oscillator Selection bits (INTOSCIO oscillator: I/O function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN),
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// disable watchdog,
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// and DO NOT disable low voltage programming.
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// The rest of fuses are left as default.
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__code uint16_t __at (_CONFIG1) __configword = _WDTE_OFF & _BOREN_ON & _CP_OFF;
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#define LED_PORT PORTCbits.RC5
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#define LED_TRIS TRISCbits.TRISC5
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// board layout:
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// mosfets clockwise from power feed:
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// RA5, RA4, RC2, RC3
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// 'input' pin: RC5
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// Uncalibrated delay, just waits a number of for-loop iterations
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void delay(uint16_t iterations)
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{
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uint16_t i;
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for (i = 0; i < iterations; i++) {
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// Prevent this loop from being optimized away.
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__asm nop __endasm;
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}
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}
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void main(void)
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{
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LED_TRIS = 0; // Pin as output
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LED_PORT = 0; // LED off
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while (1) {
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LED_PORT = 1; // LED On
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delay(30000); // ~500ms @ 4MHz
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LED_PORT = 0; // LED Off
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delay(30000); // ~500ms @ 4MHz
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}
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}
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