93 lines
1.4 KiB
C
93 lines
1.4 KiB
C
#include <stdint.h>
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#include "utils.h"
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#ifndef DESKTOP
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#include "stc15.h"
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#endif
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#ifdef DESKTOP
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void _delay_ms(uint8_t ms){
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//TODO:
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}
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#ifdef ACCURATE_DELAY_US
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void _delay_us(uint8_t us)
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{
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//TODO:
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}
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#endif
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void backlight_off(void){ }
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#else //!DESKTOP
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void _delay_ms(uint8_t ms)
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{
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// delay function, tuned for 11.583 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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ms_delay$:
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mov b, #10 ; i, 2 clocks
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ms_outer$:
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mov a, #230 ; j, 2 clocks
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ms_inner$:
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djnz acc, ms_inner$ ;4 clocks
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djnz b, ms_outer$ ;4 clocks
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djnz dpl, ms_delay$ ;4 clocks
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__endasm;
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}
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#ifdef ACCURATE_DELAY_US
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void _delay_us(uint8_t us)
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{
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// delay function, tuned for 11.583 MHz clock
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// optimized to assembler
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us; // keep compiler from complaining
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__asm;
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; dpl contains us param value
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us_delay$:
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nop
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nop
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nop
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nop
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nop
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nop
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djnz dpl, us_delay$
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__endasm;
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}
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#endif
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void backlight_off(void){
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P3_4 = 1;
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}
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#endif //ifdef desktop
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#ifdef DESKTOP
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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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i++;
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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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#endif
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