counter2_mode0.h

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#ifndef STC15_COUNTER2_MODE0H
#define STC15_COUNTER2_MODE0H
 
#include <assert.h>
#include <stdint.h>
#include <stdbool.h>
 
#include <interrupt.h>
#include <bits.h>
 
#define T2 P31
 
 
#define counter2_mode0_init()                   \
do {                                            \
    enable_mcu_interrupts();                    \
    enable_timer2_interrupt();                  \
                                                \
    bit_clr(AUXR, CBIT4);                       \
    bit_set(AUXR, SBIT3); /* init Counter2 */   \
} while(0)
 
 
#define counter2_mode0_start(value)             \
do {                                            \
    counter2_mode0_set_value(value);            \
                                                \
    bit_set(AUXR, SBIT4);                       \
} while (0);
 
#define counter2_mode0_stop()                   \
do {                                            \
    bit_clr(AUXR, CBIT4);                       \
} while (0)
 
 
#define is_counter2_mode0_started() (test_if_bit_set(_AUXR, SBIT4))
 
 
#define counter2_mode0_get_value() ((((uint16_t) T2H) << 8) | T2L)
 
#define counter2_mode0_set_value(value)         \
do {                                            \
    static_assert(value <= 0xffff, "value to large"); \
    const uint16_t _val = (value);              \
    T2H = (uint8_t)(_val >> 8);                 \
    T2L = (uint8_t)(_val & 0xff);               \
} while(0)
 
 
#define counter2_mode0_enable_P30_output()   (bit_set(INT_CLKO, SBIT2))
 
#define counter2_mode0_disable_P30_output()   (bit_clr(INT_CLKO, CBIT2))
 
#define is_counter2_mode0_P30_output_enabled()   (test_if_bit_set(INT_CLKO, SBIT2))
 
#endif