73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
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/* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdint.h>
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#include "n76e003.h"
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// 16Mhz clock
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#define CLOCK 16000000L
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// Divide by 12
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#define T0CLOCK ((CLOCK)/12L)
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// Per milisecond
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#define T0_1MS ((T0CLOCK)/1000L)
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static void msdelay(uint32_t count)
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{
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int16_t reload = -T0_1MS;
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// Input = Fsys/12
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SET_FIELD(CKCON, T0M, 0);
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// Mode 1
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SET_FIELD(TMOD, T0M, 1);
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// Start
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TR0 = 1;
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while (count != 0)
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{
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TL0 = reload & 0xFF;
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TH0 = reload >> 8 & 0xFF;;
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while(!TF0);
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TF0 = 0;
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count--;
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}
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TR0 = 0;
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}
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void main() {
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// Set pins in old-skool Quasi Bidirectional mode
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P0M1 = 0;
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P0M2 = 0;
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P1M1 = 0;
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P1M2 = 0;
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P3M1 = 0;
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P3M2 = 0;
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for (;;) {
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int i;
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for (i = 0; i < 10; i++) {
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P01 = 0;
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P13 = 0;
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msdelay(500);
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P01 = 0;
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P13 = 0;
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msdelay(500);
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P01 = 0;
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P13 = 0;
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msdelay(500);
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P01 = 0;
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P13 = 0;
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msdelay(500);
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}
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}
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}
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