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AP_Common: Integrate methods for converting hexadecimal characters to numbers 

Co-authored-by: muramura <ma2maru@gmail.com>
This commit is contained in:
Peter Barker 2024-09-22 12:50:16 +10:00 committed by Peter Barker
parent e4ca54b2e4
commit 1e26441ae6
2 changed files with 4 additions and 4 deletions
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6
libraries/AP_Common/AP_Common.cpp
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@ -93,9 +93,9 @@ size_t strncpy_noterm(char *dest, const char *src, size_t n)
* return the numeric value of an ascii hex character * return the numeric value of an ascii hex character
* *
* @param[in] a Hexadecimal character * @param[in] a Hexadecimal character
* @return Returns a binary value * @return Returns a binary value. If 'a' is not a valid hex character 255 (AKA -1) is returned
*/ */
int16_t char_to_hex(char a) uint8_t char_to_hex(char a)
{ {
if (a >= 'A' && a <= 'F') { if (a >= 'A' && a <= 'F') {
return a - 'A' + 10; return a - 'A' + 10;
@ -104,5 +104,5 @@ int16_t char_to_hex(char a)
} else if (a >= '0' && a <= '9') { } else if (a >= '0' && a <= '9') {
return a - '0'; return a - '0';
} }
return 0; return 255;
} }

2
libraries/AP_Common/AP_Common.h
View File

@ -169,7 +169,7 @@ bool hex_to_uint8(uint8_t a, uint8_t &res); // return the uint8 value of an asc
size_t strncpy_noterm(char *dest, const char *src, size_t n); size_t strncpy_noterm(char *dest, const char *src, size_t n);
// return the numeric value of an ascii hex character // return the numeric value of an ascii hex character
int16_t char_to_hex(char a); uint8_t char_to_hex(char a);
/* /*
Bit manipulation Bit manipulation