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/* main.c */
void main(void);
/* util.c */
void assert_failed(uint8_t *file, uint32_t line);
void delay(volatile uint32_t n);
void delay_ms(volatile uint32_t n);
int putchar(int c);
/* uart.c */
void uart_tx(uint8_t d);
int uart_rx(uint8_t *d);
void uart_init(void);
/* i2c_bb.c */
uint8_t i2cb_send(uint8_t wot);
uint8_t i2cb_send_addr(uint8_t addr, uint8_t rnw);
int i2cb_send_data(uint8_t d);
uint8_t i2cb_read(uint8_t ack);
void i2cb_start(void);
void i2cb_stop(void);
int i2cb_start_transaction(uint8_t a, uint8_t rnw);
void i2cb_reset(void);
void i2cb_init(void);
/* clock.c */
uint32_t CLK_GetClockFreq(void);
void clock_init(void);
void CLK_PeripheralClockConfig(CLK_Peripheral_TypeDef CLK_Peripheral, FunctionalState NewState);
/* gpio.c */
uint8_t GPIO_ReadInputData(GPIO_TypeDef *GPIOx);
void GPIO_WriteHigh(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins);
void GPIO_WriteLow(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins);
void GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin, GPIO_Mode_TypeDef GPIO_Mode);
/* sht20.c */
void sht20_reset(void);
char *sht20_temp_s(void);
char *sht20_humid_s(void);
/* stm8s_it.c */
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