diff options
Diffstat (limited to 'nuttx/libc')
| -rw-r--r-- | nuttx/libc/Kconfig | 28 | ||||
| -rw-r--r-- | nuttx/libc/math/Kconfig | 2 | ||||
| -rw-r--r-- | nuttx/libc/misc/Make.defs | 8 |
3 files changed, 36 insertions, 2 deletions
diff --git a/nuttx/libc/Kconfig b/nuttx/libc/Kconfig index bd470be7f5..a5ff7fd438 100644 --- a/nuttx/libc/Kconfig +++ b/nuttx/libc/Kconfig @@ -3,6 +3,8 @@ # see misc/tools/kconfig-language.txt. # +comment "Standard C Library Options" + config STDIO_BUFFER_SIZE int "C STDIO buffer size" default 64 @@ -273,3 +275,29 @@ config ARCH_BZERO of bzero(). endif + +comment "Non-standard Helper Functions" + +config LIB_KBDCODEC + bool "Keyboard CODEC" + default y + ---help--- + In NuttX, a keyboard/keypad driver is simply a character driver that + may have an (optional) encoding/decoding layer on the data returned + by the character driver. A keyboard may return simple text data + (alphabetic, numeric, and punctuaction) or control characters + (enter, control-C, etc.). We can think about this the normal + "in-band" keyboard data stream. However, in addition, most + keyboards support actions that cannot be represented as text data. + Such actions include things like cursor controls (home, up arrow, + page down, etc.), editing functions (insert, delete, etc.), volume + controls, (mute, volume up, etc.) and other special functions. We + can think about this as special, "out-of-band" keyboard commands. + In this case, some special encoding may be required to multiplex + the in-band text data and out-of-band command streams. + + This option enables the functions that implement the encoding and + decoding of keyboard data. These are the interfaces prototyped in + include/nuttx/input/kbd_codec.h. While not correctly a part of + the C library, it is included here because the decoding side of this + interface must be accessible by end user programs. diff --git a/nuttx/libc/math/Kconfig b/nuttx/libc/math/Kconfig index c24bfd53f3..db9dfae638 100644 --- a/nuttx/libc/math/Kconfig +++ b/nuttx/libc/math/Kconfig @@ -4,7 +4,7 @@ # config LIBM - bool "Math library" + bool "Standard Math library" default n depends on !ARCH_MATH_H ---help--- diff --git a/nuttx/libc/misc/Make.defs b/nuttx/libc/misc/Make.defs index c6af5f8604..ad0313346b 100644 --- a/nuttx/libc/misc/Make.defs +++ b/nuttx/libc/misc/Make.defs @@ -35,7 +35,7 @@ # Add the internal C files to the build -CSRCS += lib_init.c lib_filesem.c lib_kbdencode.c lib_kbddecode.c +CSRCS += lib_init.c lib_filesem.c # Add C files that depend on file OR socket descriptors @@ -63,6 +63,12 @@ CSRCS += lib_match.c CSRCS += lib_crc32.c CSRCS += lib_dbg.c lib_dumpbuffer.c +# Keyboard driver encoder/decoder + +ifneq ($(CONFIG_LIB_KBDCODEC),0) +CSRCS += lib_kbdencode.c lib_kbddecode.c +endif + # Add the misc directory to the build DEPPATH += --dep-path misc |