counter0_mode3.h

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#ifndef STC15_COUNTER0_MODE3H
#define STC15_COUNTER0_MODE3H
 
#include <stdint.h>
#include <stdbool.h>
 
#include <interrupt.h>
 
#define T0 P34
 
#define INT0 P32
 
 
#define counter0_mode3_init()                   \
do {                                            \
    enable_mcu_interrupts();                    \
    enable_timer0_interrupt();                  \
    /* TMOD.3/GATE = 0; */                      \
    /* TMOD.2/(Timer or Counter mode) = 1; */   \
    /* TMOD.1/M1 timer0 = 1; */                 \
    /* TMOD.0/M0 timer0= 1; */                  \
    TMOD &= 0xF0;                               \
    TMOD |= 0x07; /* init Counter0 */           \
} while(0)
 
 
#define counter0_mode3_start(value)             \
do {                                            \
    counter0_mode3_set_value(value);            \
                                                \
    TF0 = 0;                                    \
    TR0 = 1;                                    \
} while (0);
 
#define counter0_mode3_stop()                   \
do {                                            \
    TR0 = 0;                                    \
} while (0)
 
 
#define is_counter0_mode3_started() (TR0 == 1 && (is_counter0_mode3_gate_opened() || INT0 == 1) )
 
 
#define counter0_mode3_get_value() ((((uint16_t) TH0) << 8) | TL0)
 
#define counter0_mode3_set_value(value)         \
do {                                            \
    TH0 = (uint8_t)(value >> 8);                \
    TL0 = (uint8_t)(value & 0xff);              \
} while(0)
 
 
#define counter0_mode3_enable_P35_output()   (bit_set(INT_CLKO, SBIT0))
 
#define counter0_mode3_disable_P35_output()   (bit_clr(INT_CLKO, CBIT0))
 
#define is_counter0_mode3_P35_output_enabled()   (test_if_bit_set(INT_CLKO, SBIT0))
 
#define counter0_mode3_open_gate() (bit_clr(TMOD, CBIT3))
 
#define counter0_mode3_close_gate() (bit_set(TMOD, SBIT3))
 
#define is_counter0_mode3_gate_opened() (test_if_bit_cleared(TMOD, SBIT3))
 
#endif