diff options
Diffstat (limited to 'apps/examples/hidkbd')
| -rw-r--r-- | apps/examples/hidkbd/Kconfig | 31 | ||||
| -rw-r--r-- | apps/examples/hidkbd/hidkbd_main.c | 106 |
2 files changed, 136 insertions, 1 deletions
diff --git a/apps/examples/hidkbd/Kconfig b/apps/examples/hidkbd/Kconfig index 503d9d9d9c..81f817ef9b 100644 --- a/apps/examples/hidkbd/Kconfig +++ b/apps/examples/hidkbd/Kconfig @@ -10,4 +10,35 @@ config EXAMPLES_HIDKBD Enable the USB HID keyboard example if EXAMPLES_HIDKBD + +config EXAMPLES_HIDKBD_DEFPRIO + int "Waiter Thread Priority" + default 50 + ---help--- + Priority of "waiter" thread. Default: 50 + +config EXAMPLES_HIDKBD_STACKSIZE + int "Waiter Thread Stack Size" + default 1024 + ---help--- + Stacksize of "waiter" thread. Default 1024 + +config EXAMPLES_HIDKBD_DEVNAME + string "Keyboard Device Name" + default "/dev/kbda" + ---help--- + Name of keyboard device to be used. Default: "/dev/kbda" + +config EXAMPLES_HIDKBD_ENCODED + bool "Encode Special Keys" + default y + depends on HIDKBD_ENCODED && LIB_KBDCODEC + ---help--- + Decode special key press events in the user buffer. In this case, + the example coded will use the interfaces defined in + include/nuttx/input/kbd_codec.h to decode the returned keyboard + data. These special keys include such things as up/down arrows, + home and end keys, etc. If this not defined, only 7-bit print-able + and control ASCII characters will be provided to the user. + endif diff --git a/apps/examples/hidkbd/hidkbd_main.c b/apps/examples/hidkbd/hidkbd_main.c index 8c9f6fa95f..8a632bab75 100644 --- a/apps/examples/hidkbd/hidkbd_main.c +++ b/apps/examples/hidkbd/hidkbd_main.c @@ -46,10 +46,18 @@ #include <unistd.h> #include <fcntl.h> #include <sched.h> +#include <string.h> +#include <ctype.h> +#include <assert.h> #include <errno.h> #include <nuttx/usb/usbhost.h> +#ifdef CONFIG_EXAMPLES_HIDKBD_ENCODED +# include <nuttx/streams.h> +# include <nuttx/input/kbd_codec.h> +#endif + /**************************************************************************** * Definitions ****************************************************************************/ @@ -83,10 +91,23 @@ # define CONFIG_EXAMPLES_HIDKBD_DEVNAME "/dev/kbda" #endif +#if !defined(CONFIG_HIDKBD_ENCODED) || !defined(CONFIG_LIB_KBDCODEC) +# undef CONFIG_EXAMPLES_HIDKBD_ENCODED +#endif + /**************************************************************************** * Private Types ****************************************************************************/ +#ifdef CONFIG_EXAMPLES_HIDKBD_ENCODED +struct hidbkd_instream_s +{ + struct lib_instream_s stream; + FAR char *buffer; + ssize_t nbytes; +}; +#endif + /**************************************************************************** * Private Data ****************************************************************************/ @@ -98,9 +119,84 @@ static struct usbhost_driver_s *g_drvr; ****************************************************************************/ /**************************************************************************** - * Public Functions + * Name: hidkbd_getstream + * + * Description: + * Get one character from the keyboard. + * ****************************************************************************/ +#ifdef CONFIG_EXAMPLES_HIDKBD_ENCODED +static int hidkbd_getstream(FAR struct lib_instream_s *this) +{ + FAR struct hidbkd_instream_s *kbdstream = (FAR struct hidbkd_instream_s *)this; + + DEBUGASSERT(kbdstream && kbdstream->buffer); + if (kbdstream->nbytes > 0) + { + kbdstream->nbytes--; + kbdstream->stream.nget++; + return (int)*kbdstream->buffer++; + } + + return EOF; +} +#endif + +/**************************************************************************** + * Name: hidkbd_decode + * + * Description: + * Decode encoded keyboard input + * + ****************************************************************************/ + +#ifdef CONFIG_EXAMPLES_HIDKBD_ENCODED +static void hidkbd_decode(FAR char *buffer, ssize_t nbytes) +{ + struct hidbkd_instream_s kbdstream; + struct kbd_getstate_s state; + uint8_t ch; + int ret; + + /* Initialize */ + + memset(&state, 0, sizeof(struct kbd_getstate_s)); + kbdstream.stream.get = hidkbd_getstream; + kbdstream.stream.nget = 0; + kbdstream.buffer = buffer; + kbdstream.nbytes = nbytes; + + /* Loop until all of the bytes have been consumed. We implicitly assume + * that the the escaped sequences do not cross buffer boundaries. That + * might be true if the read buffer were small or the data rates high. + */ + + for (;;) + { + /* Decode the next thing from the buffer */ + + ret = kbd_get((FAR struct lib_instream_s *)&kbdstream, &state, &ch); + if (ret == KBD_ERROR) + { + break; + } + + /* Normal data? Or special key? */ + + if (ret == KBD_NORMAL) + { + printf("Data: %c [%02x]\n", isprint(ch) ? ch : '.', ch); + } + else + { + DEBUGASSERT(ret == KBD_SPECIAL); + printf("Special: %d\n", ch); + } + } +} +#endif + /**************************************************************************** * Name: hidkbd_waiter * @@ -141,6 +237,10 @@ static int hidkbd_waiter(int argc, char *argv[]) } /**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** * Name: hidkbd_main ****************************************************************************/ @@ -217,7 +317,11 @@ int hidkbd_main(int argc, char *argv[]) { /* On success, echo the buffer to stdout */ +#ifdef CONFIG_EXAMPLES_HIDKBD_ENCODED + hidkbd_decode(buffer, nbytes); +#else (void)write(1, buffer, nbytes); +#endif } } while (nbytes > 0); |