void INITIATION(void);
void delay_ms(void);
void EXTERN_INTERRUPT_OPEN(uint8_t index);
void EXTERN_INTERRUPT_CLOSE(uint8_t index);
void SRAM_1M_8_WRITE(uint32_t address,uint8_t data);
uint8_t SRAM_1M_8_READ(uint32_t address);
void AD7891_WRITE(uint16_t cmd);
uint16_t AD7891_READ(void);
void AD7891_CHANNEL_SELECT(uint16_t index);
void AD7891_CONVERSION_START(void);
void UART_SETTING(int baud_rate, long fosc);
void UART_RXCINT_OPEN(void);
void UART_RXCINT_CLOSE(void);
void UART_DATA_BYTE_SEND(uint8_t data);
void SEND_ONE_PACKAGE(uint8_t temp_data);
void TIMER_BEGIN(void);
void TIMER_STOP(void);
void SAMPLE(void);
uint8_t OPERATION_DETECTION(void);