diff options
Diffstat (limited to 'src/core/ao_cmd.c')
| -rw-r--r-- | src/core/ao_cmd.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/core/ao_cmd.c b/src/core/ao_cmd.c index 1814cecf..a3330974 100644 --- a/src/core/ao_cmd.c +++ b/src/core/ao_cmd.c @@ -110,6 +110,22 @@ putnibble(uint8_t v) putchar(v + ('a' - 10)); } +uint8_t +ao_getnibble(void) +{ + char c; + + c = getchar(); + if ('0' <= c && c <= '9') + return c - '0'; + if ('a' <= c && c <= 'f') + return c - ('a' - 10); + if ('A' <= c && c <= 'F') + return c - ('A' - 10); + ao_cmd_status = ao_cmd_lex_error; + return 0; +} + void ao_cmd_put16(uint16_t v) { |