printf.c File Reference

#include <byteorder.h>
#include <endian.h>
#include <io.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <types.h>
#include <rtc.h>
#include <xformat.h>

Include dependency graph for printf.c:

Classes
struct	uart_serial

Macros
#define	thr   rbr
#define	dll   rbr
#define	dlh   ier
#define	iir   fcr
#define	SUNXI_UART0_BASE   0x05000000

Typedefs
typedef struct uart_serial	uart_serial_t

Functions
void	set_timer_count ()
	Set timer count.
void	sunxi_serial_init ()
void	sunxi_uart_putc (char c)
void	uart_log_putchar (void *arg, char c)
	Writes a single character 'c' to the log output.
void	uart_printf (const char *fmt,...)
	Print message via UART.
void	printf (const char *fmt,...)
	Print message via UART.

Variables
static uart_serial_t *	uart_dbg
static uint32_t	init_timestamp = 0

Macro Definition Documentation

dlh

#define dlh   ier

dll

#define dll   rbr

iir

#define iir   fcr

SUNXI_UART0_BASE

#define SUNXI_UART0_BASE   0x05000000

thr

#define thr   rbr

Typedef Documentation

uart_serial_t

typedef struct uart_serial uart_serial_t

Function Documentation

printf()

void printf	(	const char *	fmt,
			...
	)

Print message via UART.

This function is used to print formatted message to the terminal via UART serial port.

Parameters

fmt	Format string describing the format of the message to print.
...	Variable argument list used to fill placeholders in the format string.

Note

This function is typically used in embedded systems for debugging and outputting system status information.

set_timer_count()

void set_timer_count

(

)

Set timer count.

This function is used to set the count value of the timer.

Note

Before calling this function, timer-related hardware configuration should be initialized.

Set timer count.

This function calls the frequency detection routine and initializes the timestamp based on the current time in microseconds.

sunxi_serial_init()

void sunxi_serial_init

(

)

sunxi_uart_putc()

void sunxi_uart_putc

(

char

c

)

uart_log_putchar()

void uart_log_putchar	(	void *	arg,
		char	c
	)

Writes a single character 'c' to the log output.

Parameters

arg	A pointer to optional arguments.
c	The character to be written.

uart_printf()

void uart_printf	(	const char *	fmt,
			...
	)

Print message via UART.

This function is used to print formatted message to the terminal via UART serial port.

Parameters

fmt	Format string describing the format of the message to print.
...	Variable argument list used to fill placeholders in the format string.

Note

This function is typically used in embedded systems for debugging and outputting system status information.

Variable Documentation

init_timestamp

uint32_t init_timestamp = 0

static

uart_dbg

uart_serial_t* uart_dbg

static