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80 lines
1.7 KiB
80 lines
1.7 KiB
//
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// Created by MightyPork on 2017/11/04.
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//
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// Debugging functions
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//
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#ifndef GEX_DEBUG_H
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#define GEX_DEBUG_H
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#include <inttypes.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include "macro.h"
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#if USE_DEBUG_UART
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/** Externally defined function for writing to the debug UART */
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extern void debug_write(const char *buf, uint16_t len);
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/** Debug printf, used in the macros below */
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void _DO_PRINTF(const char *format, ...) __attribute__((format(printf,1,2))) ;
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/** putsn to debug */
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void PUTSN(const char *string, uint16_t len);
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/** puts to debug */
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void PUTS(const char *string);
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/** puts with just a newline */
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static inline void PUTNL(void)
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{
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debug_write("\r\n", 2);
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}
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/**
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* Print one character to debug uart
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* @param ch - character ASCII code
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* @return the character code
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*/
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static inline void PUTCHAR(char ch)
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{
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debug_write(&ch, 1);
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}
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// NOTE: Those macros use puts instead of printf if the format is the only arg.
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// this saves ROM and stack overhead
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/**
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* Debug printf
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*/
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#define PRINTF(format, ...) do { \
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if (VA_ARG_COUNT(__VA_ARGS__) == 0) { \
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PUTS(format); \
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} else { \
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_DO_PRINTF(format, ##__VA_ARGS__); \
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} \
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} while (0)
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/**
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* Debug printf (with a newline)
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*/
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#define dbg(format, ...) do { \
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if (VA_ARG_COUNT(__VA_ARGS__) == 0) { \
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PUTS(format); \
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} else { \
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PRINTF(format, ##__VA_ARGS__); \
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} \
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PUTNL(); \
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} while (0)
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#else
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#define dbg(format, ...) do {} while (0)
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#define PRINTF(format, ...) do {} while (0)
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#define PUTSN(string, len) do {} while (0)
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#define PUTS(string) do {} while (0)
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#define PUTNL() do {} while (0)
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#define PUTCHAR(ch) do {} while (0)
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#endif
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#endif //GEX_DEBUG_H
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