src/common/tusb_debug.h

/*
 * SPDX-FileCopyrightText: Copyright (c) 2022, Ha Thach (tinyusb.org)
 * SPDX-License-Identifier: MIT
 *
 * This file is part of the TinyUSB stack.
 */

#ifndef TUSB_DEBUG_H_
#define TUSB_DEBUG_H_

#ifdef __cplusplus
 extern "C" {
#endif

//--------------------------------------------------------------------+
// Debug
//--------------------------------------------------------------------+

// CFG_TUSB_DEBUG for debugging
// 0 : no debug
// 1 : print error
// 2 : print warning
// 3 : print info
#if CFG_TUSB_DEBUG

// Enum to String for debugging purposes
#if CFG_TUSB_DEBUG >= CFG_TUH_LOG_LEVEL || CFG_TUSB_DEBUG >= CFG_TUD_LOG_LEVEL
extern char const* const tu_str_speed[];
extern char const* const tu_str_std_request[];
extern char const* const tu_str_xfer_result[];
#endif

void tu_print_mem(void const *buf, uint32_t count, uint8_t indent);

#ifdef CFG_TUSB_DEBUG_PRINTF
  extern int CFG_TUSB_DEBUG_PRINTF(const char *format, ...);
  #define tu_printf    CFG_TUSB_DEBUG_PRINTF
#else
  #include <stdio.h>
  #define tu_printf(...)    (void) printf(__VA_ARGS__)
#endif

TU_ATTR_ALWAYS_INLINE static inline void tu_print_buf(uint8_t const* buf, uint32_t bufsize) {
  for(uint32_t i=0; i<bufsize; i++) {
    tu_printf("%02X ", buf[i]);
  }
  tu_printf("\r\n");
}

// Log with Level
#define TU_LOG(n, ...)        TU_XSTRCAT(TU_LOG, n)(__VA_ARGS__)
#define TU_LOG_MEM(n, ...)    TU_XSTRCAT3(TU_LOG, n, _MEM)(__VA_ARGS__)
#define TU_LOG_BUF(n, ...)    TU_XSTRCAT3(TU_LOG, n, _BUF)(__VA_ARGS__)
#define TU_LOG_INT(n, ...)    TU_XSTRCAT3(TU_LOG, n, _INT)(__VA_ARGS__)
#define TU_LOG_HEX(n, ...)    TU_XSTRCAT3(TU_LOG, n, _HEX)(__VA_ARGS__)
#define TU_LOG_LOCATION()     tu_printf("%s: %d:\r\n", __PRETTY_FUNCTION__, __LINE__)
#define TU_LOG_FAILED()       tu_printf("%s: %d: Failed\r\n", __PRETTY_FUNCTION__, __LINE__)

// Log Level 1: Error
#define TU_LOG1               tu_printf
#define TU_LOG1_MEM           tu_print_mem
#define TU_LOG1_BUF(_x, _n)   tu_print_buf((uint8_t const*)(_x), _n)
#define TU_LOG1_INT(_x)       tu_printf(#_x " = %ld\r\n", (unsigned long) (_x) )
#define TU_LOG1_HEX(_x)       tu_printf(#_x " = 0x%lX\r\n", (unsigned long) (_x) )

// Log Level 2: Warn
#if CFG_TUSB_DEBUG >= 2
  #define TU_LOG2             TU_LOG1
  #define TU_LOG2_MEM         TU_LOG1_MEM
  #define TU_LOG2_BUF         TU_LOG1_BUF
  #define TU_LOG2_INT         TU_LOG1_INT
  #define TU_LOG2_HEX         TU_LOG1_HEX
#endif

// Log Level 3: Info
#if CFG_TUSB_DEBUG >= 3
  #define TU_LOG3             TU_LOG1
  #define TU_LOG3_MEM         TU_LOG1_MEM
  #define TU_LOG3_BUF         TU_LOG1_BUF
  #define TU_LOG3_INT         TU_LOG1_INT
  #define TU_LOG3_HEX         TU_LOG1_HEX
#endif

typedef struct {
  uint32_t key;
  const char* data;
} tu_lookup_entry_t;

typedef struct {
  uint16_t count;
  tu_lookup_entry_t const* items;
} tu_lookup_table_t;

static inline const char* tu_lookup_find(tu_lookup_table_t const* p_table, uint32_t key) {
  for(uint16_t i=0; i<p_table->count; i++) {
    if (p_table->items[i].key == key) {
      return p_table->items[i].data;
    }
  }

  #ifndef CFG_TUSB_DEBUG_PRINTF
  // not found return the key value in hex if no custom printf is defined
  static char not_found[11];
  if (snprintf(not_found, sizeof(not_found), "0x%08lX", (unsigned long)key) <= 0) {
    not_found[0] = 0;
  }
  return not_found;
  #else
  return "NotFound";
  #endif
}

#endif // CFG_TUSB_DEBUG

#ifndef TU_LOG
  #define TU_LOG(n, ...)
  #define TU_LOG_MEM(n, ...)
  #define TU_LOG_BUF(n, ...)
  #define TU_LOG_INT(n, ...)
  #define TU_LOG_HEX(n, ...)
  #define TU_LOG_LOCATION()
  #define TU_LOG_FAILED()
#endif

#define TU_LOG0(...)
#define TU_LOG0_MEM(...)
#define TU_LOG0_BUF(...)
#define TU_LOG0_INT(...)
#define TU_LOG0_HEX(...)

#ifndef TU_LOG1
  #define TU_LOG1(...)
  #define TU_LOG1_MEM(...)
  #define TU_LOG1_BUF(...)
  #define TU_LOG1_INT(...)
  #define TU_LOG1_HEX(...)
#endif

#ifndef TU_LOG2
  #define TU_LOG2(...)
  #define TU_LOG2_MEM(...)
  #define TU_LOG2_BUF(...)
  #define TU_LOG2_INT(...)
  #define TU_LOG2_HEX(...)
#endif

#ifndef TU_LOG3
  #define TU_LOG3(...)
  #define TU_LOG3_MEM(...)
  #define TU_LOG3_BUF(...)
  #define TU_LOG3_INT(...)
  #define TU_LOG3_HEX(...)
#endif

#ifdef __cplusplus
 }
#endif

#endif