Home
last modified time | relevance | path

Searched full:read (Results 1 – 25 of 155) sorted by relevance

1234567

/lvgl-latest/src/libs/fsdrv/
Dlv_fs_posix.c103 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
132 * @return LV_FS_RES_OK: no error, the file is read
150 * Read data from an opened file
153 * @param buf pointer to a memory block where to store the read data
154 * @param btr number of Bytes To Read
155 * @param br the real number of read bytes (Byte Read)
156 * @return LV_FS_RES_OK: no error, the file is read
164 ssize_t ret = read(fd, buf, btr); in fs_read()
166 LV_LOG_WARN("Could not read file: %d, errno: %d", fd, errno); in fs_read()
199 * Set the read write pointer. Also expand the file size if necessary.
[all …]
Dlv_fs_memfs.c6 …* This driver allows using a memory area as a file that can be read by normal file operations. It …
120 * @param mode read: FS_MODE_RD (currently only reading from the buffer is supported)
134 * @return LV_FS_RES_OK: no error, the file is read
145 * Read data from an opened file
148 * @param buf pointer to a memory block where to store the read data
149 * @param btr number of Bytes To Read
150 * @param br the real number of read bytes (Byte Read)
151 * @return LV_FS_RES_OK: no error, the file is read
165 * Set the read pointer.
168 * @param pos the new position of read pointer
[all …]
Dlv_fs_win32.c110 * @return LV_FS_RES_OK: no error, the file is read
206 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
242 * @return LV_FS_RES_OK: no error, the file is read
254 * Read data from an opened file
257 * @param buf pointer to a memory block where to store the read data
258 * @param btr number of Bytes To Read
259 * @param br the real number of read bytes (Byte Read)
260 * @return LV_FS_RES_OK: no error, the file is read
289 * Set the read write pointer. Also expand the file size if necessary.
292 * @param pos the new position of read write pointer
[all …]
Dlv_fs_fatfs.c105 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
137 * @return LV_FS_RES_OK: no error, the file is read
149 * Read data from an opened file
152 * @param buf pointer to a memory block where to store the read data
153 * @param btr number of Bytes To Read
154 * @param br the real number of read bytes (Byte Read)
155 * @return LV_FS_RES_OK: no error, the file is read
184 * Set the read write pointer. Also expand the file size if necessary.
187 * @param pos the new position of read write pointer
189 * @return LV_FS_RES_OK: no error, the file is read
[all …]
Dlv_fs_stdio.c104 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
129 * @return LV_FS_RES_OK: no error, the file is read
140 * Read data from an opened file
143 * @param buf pointer to a memory block where to store the read data
144 * @param btr number of Bytes To Read
145 * @param br the real number of read bytes (Byte Read)
146 * @return LV_FS_RES_OK: no error, the file is read
173 * Set the read write pointer. Also expand the file size if necessary.
176 * @param pos the new position of read write pointer
177 * @return LV_FS_RES_OK: no error, the file is read
[all …]
Dlv_fs_arduino_esp_littlefs.cpp65 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
110 * Read data from an opened file
113 * @param buf pointer to a memory block where to store the read data
114 * @param btr number of Bytes To Read
115 * @param br the real number of read bytes (Byte Read)
122 *br = lf->file.read((uint8_t *)buf, btr); in fs_read()
146 * Set the read write pointer. Also expand the file size if necessary.
149 * @param pos the new position of read write pointer
172 * Give the position of the read write pointer
Dlv_fs_arduino_sd.cpp57 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
102 * Read data from an opened file
105 * @param buf pointer to a memory block where to store the read data
106 * @param btr number of Bytes To Read
107 * @param br the real number of read bytes (Byte Read)
114 *br = lf->file.read((uint8_t *)buf, btr); in fs_read()
138 * Set the read write pointer. Also expand the file size if necessary.
141 * @param pos the new position of read write pointer
164 * Give the position of the read write pointer
Dlv_fs_littlefs.c69 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
115 * Read data from an opened file
118 * @param buf pointer to a memory block where to store the read data
119 * @param btr number of Bytes To Read
120 * @param br the real number of read bytes (Byte Read)
153 * Set the read write pointer. Also expand the file size if necessary.
156 * @param pos the new position of read write pointer
179 * Give the position of the read write pointer
239 * Read data from an opened directory
/lvgl-latest/docs/details/main-components/
Dfs.rst113 drv.read_cb = my_read_cb; /* Callback to read a file */
118 drv.dir_open_cb = my_dir_open_cb; /* Callback to open directory to read its content */
119 drv.dir_read_cb = my_dir_read_cb; /* Callback to read a directory's content */
231 The example below shows how to read from a file:
251 This example shows how to read a directory's content. It's up to the
270 /* fn is empty if there are no more files to read. */
292 - read
310 It has the potential to call the driver's ``read`` fewer
312 \>= the size of the file, ``read`` will only be called once. This strategy is good
314 since data will be buffered that will be discarded after the next seek and read.
[all …]
Dindev.rst41 category. Here is an example of a simple input-device Read Callback function:
173 The driver or application collects touch events until the indev read callback
238 - Register a Read Callback function for your device and set its type to
508 in ``lv_conf.h`` sets the default read period.
529 read and it should call ``read_cb`` again.
534 Normally an Input Device is read every :c:macro:`LV_DEF_REFR_PERIOD`
536 need more control over when to read the input device. For example, you
537 might need to read it by polling a file descriptor (fd).
548 /* Call this anywhere you want to read the input device */
Dimage.rst45 a *Drive* is a collection of functions (*open*, *read*, *close*, etc.)
48 system to read data from an SPI Flash memory. In every case, a *Drive*
49 is just an abstraction to read and/or write data to memory. See the
53 must be read into RAM before being drawn. As a result, they are not as
116 …``.bin`` file that must be stored separately and read using the :ref:`file support <overview_image…
194 - set it to ``NULL`` to indicate the image can be read line-by-line.
264 /* Read the PNG header and find `width` and `height` */
/lvgl-latest/examples/porting/
Dlv_port_fs_template.c102 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
116 /*Open a file for read*/
120 /*Open a file for read and write*/
143 * Read data from an opened file
146 * @param buf pointer to a memory block where to store the read data
147 * @param btr number of Bytes To Read
148 * @param br the real number of read bytes (Byte Read)
179 * Set the read write pointer. Also expand the file size if necessary.
182 * @param pos the new position of read write pointer
195 * Give the position of the read write pointer
[all …]
/lvgl-latest/src/libs/thorvg/rapidjson/
Dstream.h30 For read-only stream, no need to implement PutBegin(), Put(), Flush() and PutEnd().
38 //! Read the current character from stream without moving the read cursor.
41 //! Read the current character from stream and moving the read cursor to next character.
44 //! Get the current read cursor.
45 //! \return Number of characters read from start.
48 //! Begin writing operation at the current read pointer.
150 //! Read-only string stream.
168 const Ch* src_; //!< Current read position.
183 //! A read-write string stream.
193 // Read
Distreamwrapper.h55 \param stream stream opened for read. in RAPIDJSON_DIAG_OFF()
58 Read(); in RAPIDJSON_DIAG_OFF()
63 \param stream stream opened for read. in RAPIDJSON_DIAG_OFF()
69 Read(); in RAPIDJSON_DIAG_OFF()
73 Ch Take() { Ch c = *current_; Read(); return c; } in RAPIDJSON_DIAG_OFF()
92 void Read() { in RAPIDJSON_DIAG_OFF()
101 if (!stream_.read(buffer_, static_cast<std::streamsize>(bufferSize_))) { in RAPIDJSON_DIAG_OFF()
115 size_t count_; //!< Number of characters read in RAPIDJSON_DIAG_OFF()
Dfilereadstream.h40 \param fp File pointer opened for read. in RAPIDJSON_DIAG_OFF()
47 Read(); in RAPIDJSON_DIAG_OFF()
51 Ch Take() { Ch c = *current_; Read(); return c; } in RAPIDJSON_DIAG_OFF()
66 void Read() { in RAPIDJSON_DIAG_OFF()
89 size_t count_; //!< Number of characters read in RAPIDJSON_DIAG_OFF()
/lvgl-latest/src/libs/bin_decoder/
Dlv_bin_decoder.c134 LV_LOG_WARN("Read file header failed: %d", res); in lv_bin_decoder_info()
149 /*File is always read to buf, thus data can be modified.*/ in lv_bin_decoder_info()
331 if(dsc->decoded == NULL) return LV_RESULT_OK; /*Need to read via get_area_cb*/ in lv_bin_decoder_open()
423 /*We only support read line by line for now*/ in lv_bin_decoder_get_area()
586 /*read palette for indexed image*/ in decode_indexed()
596 LV_LOG_WARN("Read palette failed: %d", res); in decode_indexed()
624 LV_LOG_WARN("Read indexed image failed: %d", res); in decode_indexed()
682 /*It needs to be read by get_area_cb later*/ in decode_indexed()
747 LV_LOG_WARN("Read palette failed: %d", res); in load_indexed()
765 LV_LOG_WARN("Read indexed image failed: %d", res); in load_indexed()
[all …]
/lvgl-latest/src/misc/
Dlv_fs.h139 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
161 * Read from a file
163 * @param buf pointer to a buffer where the read bytes are stored
164 * @param btr Bytes To Read
165 * @param br the number of real read bytes (Bytes Read). NULL if unused.
181 * Set the position of the 'cursor' (read write pointer) in a file
190 * Give the position of the read write pointer
192 * @param pos pointer to store the position of the read write pointer
206 * Read the next filename form a directory.
Dlv_fs.c547 /* Data can be read from cache buffer */ in lv_fs_read_cached()
558 /*Data is in cache buffer, and buffer end not reached, no need to read from FS*/ in lv_fs_read_cached()
563 /*First part of data is in cache buffer, but we need to read rest of data from FS*/ in lv_fs_read_cached()
571 …ing data chuck is bigger than buffer size, then do not use cache, instead read it directly from FS… in lv_fs_read_cached()
576 /*If remaining data chunk is smaller than buffer size, then read into cache buffer*/ in lv_fs_read_cached()
593 /*If bigger data is requested, then do not use cache, instead read it directly*/ in lv_fs_read_cached()
597 /*If small data is requested, then read from FS into cache buffer*/ in lv_fs_read_cached()
/lvgl-latest/src/indev/
Dlv_indev.h66 int16_t enc_diff; /**< For LV_INDEV_TYPE_ENCODER number of steps since the previous read*/
69 …bool continue_reading; /**< If set to true, the read callback is invoked again, unless the device…
103 * Read data from an input device.
109 * Called periodically to read the input devices
110 * @param timer pointer to a timer to read
136 * Set a callback function to read input device data to the indev
138 * @param read_cb pointer to callback function to read input device data
199 * Get the callback function to read input device data to the indev
201 * @return Pointer to callback function to read input device data or NULL if indev is NULL
364 * Get a pointer to the indev read timer to
[all …]
/lvgl-latest/src/libs/libjpeg_turbo/
Dlv_libjpeg_turbo.c241 /*Read file to buffer*/ in read_file()
254 LV_LOG_WARN("read file failed"); in read_file()
288 * requires it in order to read binary files. in decode_jpeg_file()
322 LV_LOG_WARN("read jpeg orientation failed."); in decode_jpeg_file()
332 /* read file parameters with jpeg_read_header() */ in decode_jpeg_file()
375 /* while (scan lines remain to be read) */ in decode_jpeg_file()
433 LV_LOG_WARN("read jpeg size failed."); in get_jpeg_head_info()
437 LV_LOG_WARN("read jpeg orientation failed."); in get_jpeg_head_info()
454 LV_LOG_WARN("read jpeg head failed"); in get_jpeg_size()
470 LV_LOG_WARN("read jpeg head failed: %d", ret); in get_jpeg_size()
[all …]
/lvgl-latest/tests/src/test_cases/
Dtest_circle_buf.c44 * Read 1 value from the buffer. in test_circle_buf_read_write_peek_values()
55 * Peek values will not advance the read and write cursors. in test_circle_buf_read_write_peek_values()
69 * Read values from the circle buffer. The max size of the buffer is circle_buf_CAPACITY. in test_circle_buf_read_write_peek_values()
70 * When the buffer is empty, the read operation should return LV_RESULT_INVALID. in test_circle_buf_read_write_peek_values()
126 * Read 1 value from the buffer. in test_circle_buf_read_after_read_and_write()
150 * Read values from the circle buffer. The max size of the buffer is circle_buf_CAPACITY. in test_circle_buf_read_after_read_and_write()
151 * When the buffer is empty, the read operation should return LV_RESULT_INVALID. in test_circle_buf_read_after_read_and_write()
/lvgl-latest/src/core/
Dlv_obj_property.h178 * Read property value from Widget.
181 * @param id ID of property to read
182 … @return return property value read. The returned property ID is set to `LV_PROPERTY_ID_I…
187 * Read style property value from Widget
191 … @return return property value read. The returned property ID is set to `LV_PROPERTY_ID_I…
/lvgl-latest/docs/intro/
Dbasics.rst275 Read the Widget's documentation to learn which parts it uses.
432 recommended order of documents to read and things to play with while you are
435 1. If not already read, start with :ref:`introduction` page of
438 3. If not already done, read the :ref:`lvgl_basics` (above). (15 minutes)
443 7. Read the :ref:`main_components` pages to get a better understanding of the library. (2-3 hours)
446 10. Read the :ref:`contributing` guide to see how you can help to improve LVGL. (15 minutes)
/lvgl-latest/src/libs/freetype/
Dlv_ftsystem.c102 stream->read = NULL; in FT_Stream_Open()
139 stream->read = ft_lv_fs_stream_io; in FT_Stream_Open()
258 * @param buffer The address of buffer to store the read data.
259 * @param count The number of bytes to read from the stream.
260 * @return The number of bytes actually read. If `count' is zero (this is,
/lvgl-latest/src/libs/libpng/
Dlv_libpng.c97 /* Read the width and height from the file. They have a constant location: in decoder_info()
239 /*Read file to buffer*/ in alloc_file()
252 LV_LOG_WARN("read file failed"); in alloc_file()
288 /*Ready to read file*/ in decode_png()
291 LV_LOG_ERROR("png read failed: %d", ret); in decode_png()

1234567