48 lines
797 B
C
48 lines
797 B
C
#include <stdint.h>
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void _delay_ms(uint8_t ms)
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{
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// delay function, tuned for 11.092 MHz clock
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// optimized to assembler
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ms; // keep compiler from complaining?
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__asm;
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; dpl contains ms param value
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delay$:
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mov b, #8 ; i
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outer$:
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mov a, #243 ; j
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inner$:
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djnz acc, inner$
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djnz b, outer$
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djnz dpl, delay$
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__endasm;
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}
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char* u32str(uint32_t x, char* buf, uint8_t base)
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{
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int i = 0, j;
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//corner case
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if (x == 0){
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buf[i] = '0';
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}
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//get reversed string
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while(x > 0){
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buf[i] = (x % base) + '0';
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x /= base;
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i++;
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}
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//add terminator
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buf[i] = '\0';
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i--; //back to last digit
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//reverse string
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for (j = 0; j < i; j++, i--){
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char tmp;
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tmp = buf[j];
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buf[j] = buf[i];
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buf[i] = tmp;
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}
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return buf;
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}
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