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btstack_util: manually convert to hex in printf_hexdump

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This commit is contained in:
Matthias Ringwald 2018-10-31 17:53:08 +01:00
parent b8d0d01487
commit c1c586473a
1 changed files with 17 additions and 8 deletions
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23
src/btstack_util.c
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@ -160,11 +160,14 @@ uint32_t btstack_max(uint32_t a, uint32_t b){
return a > b ? a : b; return a > b ? a : b;
} }
static const char * char_to_nibble = "0123456789ABCDEF";
char char_for_nibble(int nibble){ char char_for_nibble(int nibble){
if (nibble < 10) return (char)('0' + nibble); if (nibble < 16){
nibble -= 10; return char_to_nibble[nibble];
if (nibble < 6) return (char)('A' + nibble); } else {
return '?'; return '?';
}
} }
static inline char char_for_high_nibble(int value){ static inline char char_for_high_nibble(int value){
@ -175,6 +178,7 @@ static inline char char_for_low_nibble(int value){
return char_for_nibble(value & 0x0f); return char_for_nibble(value & 0x0f);
} }
int nibble_for_char(char c){ int nibble_for_char(char c){
if (c >= '0' && c <= '9') return c - '0'; if (c >= '0' && c <= '9') return c - '0';
if (c >= 'a' && c <= 'f') return c - 'a' + 10; if (c >= 'a' && c <= 'f') return c - 'a' + 10;
@ -183,10 +187,15 @@ int nibble_for_char(char c){
} }
void printf_hexdump(const void *data, int size){ void printf_hexdump(const void *data, int size){
if (size <= 0) return; char buffer[4];
int i; buffer[2] = ' ';
for (i=0; i<size;i++){ buffer[3] = 0;
printf("%02X ", ((uint8_t *)data)[i]); while (size > 0){
uint8_t byte = *((uint8_t *)data++);
buffer[0] = char_for_high_nibble(byte);
buffer[1] = char_for_low_nibble(byte);
printf("%s", buffer);
size--;
} }
printf("\n"); printf("\n");
} }