nuttx/drivers
SPRESENSE 4eb6da33c2 cxd56/alt1250: Change power on sequence
Change the power on sequence according to ALT1250 modem spec.
2023-07-06 13:18:57 +08:00
..
1wire tools: replace INCDIR to Makefile variable 2022-11-03 19:59:55 +08:00
analog Fix Kconfig style 2023-06-19 20:05:57 +03:00
audio nuttx: improve C89 compatibility in common code 2023-05-19 02:40:38 +08:00
bch semantic/parser: fix compile warning found by sparse 2023-05-30 23:00:00 +08:00
can drivers/can/can.c: Fix nested loops with same variable 2023-06-25 11:47:34 +03:00
clk change strcpy to strlcpy 2023-02-24 12:15:40 +08:00
contactless Replace all sprintf with snprintf 2023-05-08 09:57:01 +02:00
crypto Remove the remain MIN/MAX like macro 2023-02-03 23:22:41 +08:00
dma Nuttx/dma: add dma framework for nuttx 2023-04-22 01:02:51 +08:00
dummy build: Remove the dummy drivers folder under boards 2020-05-24 20:20:12 +01:00
eeprom fs: Add g_ prefix for all global file_operations instances 2023-04-24 16:13:29 +02:00
efuse Add ATSAMA5D2/D4 Secure Fuse Controller (SFC) driver 2023-05-12 16:29:48 -03:00
i2c fs: Add g_ prefix for all global file_operations instances 2023-04-24 16:13:29 +02:00
i2s fs: Add g_ prefix for all global file_operations instances 2023-04-24 16:13:29 +02:00
input input/touchscreen: Translate raw X/Y data into pixel coordinates 2023-07-03 10:17:04 -03:00
ioexpander drivers/ioexpander: add support for SX1509 2023-06-27 14:44:00 -03:00
ipcc fs: Add g_ prefix for all global file_operations instances 2023-04-24 16:13:29 +02:00
lcd cxd56_dmac, lcd_dev: fix null pointer dereference 2023-06-28 10:16:38 +03:00
leds Made the PWM frequency of the RGB driver configurable from the menu. 2023-07-05 00:49:44 +08:00
loop fs: Add model field to geometry and mtd_geometry_s 2023-01-31 11:50:28 -03:00
math Fix Kconfig style 2023-05-23 00:03:25 +08:00
misc rpmsg: support the fdsan feature for rpmsg dev/mtd/blk 2023-06-17 19:34:39 +08:00
mmcsd Indent the define statement by two spaces 2023-05-21 09:52:08 -03:00
modem cxd56/alt1250: Change power on sequence 2023-07-06 13:18:57 +08:00
motor fs: Add g_ prefix for all global file_operations instances 2023-04-24 16:13:29 +02:00
mtd ramtron.c: add FM25V02A-DGQ 2023-07-04 08:19:56 +08:00
net drivers/net: Remove HAVE_ATOMICS and use CONFIG_HAVE_ATOMICS directly 2023-07-05 13:43:17 +03:00
note stream: Rename syslogstream to syslograwstream 2023-05-25 15:22:04 +08:00
pipes drivers/pipe: fix blocking file_pipe 2023-04-28 09:42:17 +08:00
power Fix Kconfig style 2023-06-19 20:05:57 +03:00
rc nuttx: Use MIN/MAX definitions from "sys/param.h" 2023-02-01 23:47:44 +08:00
rf Remove the unnecessary NULL fields in global instance definition of file_operations 2023-01-04 00:32:13 +02:00
rptun rptun_dump: do not acquire the lock when has hold the lock 2023-06-17 19:38:39 +08:00
segger segger: Change the default value of SEGGER_RTT_MAX_NUM_DOWN_BUFFERS to SEGGER_RTT_MAX_NUM_UP_BUFFERS 2023-06-23 00:36:36 +03:00
sensors drivers/sensors/apds9960.c: Fix mistakes in comments snerr 2023-07-03 23:05:36 +03:00
serial drivers/ptmx: Fix a potential buffer overflow 2023-06-09 19:41:11 +03:00
spi drivers/spi/spi_bitbang: Add private data on spi_bitbang 2023-04-27 17:06:14 +08:00
syslog syslog: Add sc_write_force callback 2023-06-23 09:55:19 -03:00
timers Fix Kconfig style 2023-05-23 00:03:25 +08:00
usbdev Fix Kconfig style 2023-06-22 11:46:09 +09:00
usbhost usbhost/cdcacm: Fix the compiler warning when serial dma is enabled 2023-06-05 09:25:31 +02:00
usbmisc drivers/usbmisc: remove redundant scope in switch/case 2023-03-09 16:27:07 -03:00
usbmonitor tools: replace INCDIR to Makefile variable 2022-11-03 19:59:55 +08:00
usrsock usrsock_server:fix incomplete received data error 2023-06-21 07:40:52 +03:00
video vnc server: Fix that vnc_updater thread exited caused by readed a null data 2023-05-25 22:41:47 +08:00
virtio drivers: virtio: Use one dscriptor for RX in virtio-mmio-net.c 2023-06-21 16:38:04 +08:00
wireless drivers/wireles/gs2200m: add NET_TCP dependency to NFS_DONT_BIND_TCP_SOCKET option 2023-07-03 13:32:31 +08:00
.gitignore build: Remve the unnecessary .gitignore 2020-05-23 18:00:40 +01:00
drivers_initialize.c drivers/note: fix build break by note rename change 2023-02-20 16:19:57 +08:00
Kconfig Nuttx/dma: add dma framework for nuttx 2023-04-22 01:02:51 +08:00
Makefile Nuttx/dma: add dma framework for nuttx 2023-04-22 01:02:51 +08:00
README.txt support for SAMA5D27 SDMMC peripheral 2020-07-16 23:39:37 +01:00

README
^^^^^^

This directory contains various device drivers -- both block and
character drivers as well as other more specialized drivers.

Contents:
  - Files in this directory
  - Subdirectories of this directory
  - Skeleton files

Files in this directory
^^^^^^^^^^^^^^^^^^^^^^^

dev_null.c and dev_zero.c
  These files provide the standard /dev/null and /dev/zero devices.  See
  include/nuttx/drivers/drivers.h for prototypes of functions that should
  be called if you want to register these devices (devnull_register()
  and devzero_register()).

ramdisk.c
  Can be used to set up a block of memory or (read-only) FLASH as
  a block driver that can be mounted as a file system.  See
  include/nuttx/drivers/ramdisk.h.

rwbuffer.c
  A facility that can be used by any block driver in-order to add
  writing buffering and read-ahead buffering.

Subdirectories of this directory:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

analog/
  This directory holds implementations of analog device drivers.
  This includes drivers for Analog to Digital Conversion (ADC) as
  well as drivers for Digital to Analog Conversion (DAC).
  See include/nuttx/analog/*.h for registration information.

audio/
  Audio device drivers.  See include/nuttx/audio/audio.h for interface
  definitions.  See also the audio subsystem at nuttx/audio/.

bch/
  Contains logic that may be used to convert a block driver into
  a character driver.  This is the complementary conversion as that
  performed by loop.c.  See include/nuttx/fs/fs.h for registration
  information.

can/
  This is the CAN drivers and logic support.  See include/nuttx/can/can.h
  for usage information.

contactless/
  Contactless devices are related to wireless devices.  They are not
  communication devices with other similar peers, but couplers/interfaces
  to contactless cards and tags.

crypto/
  Contains crypto drivers and support logic, including the /dev/urandom
  device.

eeprom/
  An EEPROM is a form of Memory Technology Device (see drivers/mtd).
  EEPROMs are non-volatile memory like FLASH, but differ in underlying
  memory technology and differ in usage in many respects: They may not
  be organized into blocks (at least from the standpoint of the user)
  and it is not necessary to erase the EEPROM memory before re-writing
  it.  In addition, EEPROMs tend to be much smaller than FLASH parts,
  usually only a few kilobytes vs megabytes for FLASH.  EEPROM tends to
  be used to retain a small amount of device configuration information;
  FLASH tends to be used for program or massive data storage. For these
  reasons, it may not be convenient to use the more complex MTD
  interface but instead use the simple character interface provided by
  the EEPROM drivers.

i2c/
  I2C drivers and support logic.  See include/nuttx/i2c/i2c_master.h

i2s/
  I2S drivers and support logic.  See include/nuttx/audio/i2s.h

input/
  This directory holds implementations of human input device (HID)
  drivers.  This includes such things as mouse, touchscreen, joystick,
  keyboard and keypad drivers.  See include/nuttx/input/*.h for
  registration information.

  Note that USB HID devices are treated differently.  These can be
  found under usbdev/ or usbhost/.

lcd/
  Drivers for parallel and serial LCD and OLED type devices.  These
  drivers support interfaces as defined in include/nuttx/lcd/lcd.h

leds/
  Various LED-related drivers including discrete as well as PWM-
  driven LEDs.

loop/
  Supports the standard loop device that can be used to export a
  file (or character device) as a block device.  See losetup() and
  loteardown() in include/nuttx/fs/fs.h.

mmcsd/
  Support for MMC/SD block drivers.  MMC/SD block drivers based on
  SPI and SDIO/MCI interfaces are supported.  See include/nuttx/mmcsd.h
  and include/nuttx/sdio.h for further information.

mtd/
  Memory Technology Device (MTD) drivers.  Some simple drivers for
  memory technologies like FLASH, EEPROM, NVRAM, etc.  See
  include/nuttx/mtd/mtd.h

  (Note: This is a simple memory interface and should not be
  confused with the "real" MTD developed at infradead.org.  This
  logic is unrelated; I just used the name MTD because I am not
  aware of any other common way to refer to this class of devices).

net/
  Network interface drivers.  See also include/nuttx/net/net.h

pipes/
  FIFO and named pipe drivers.  Standard interfaces are declared
  in include/unistd.h

power/
  Power management (PM) driver interfaces.  These interfaces are used
  to manage power usage of a platform by monitoring driver activity
  and by placing drivers into reduce power usage modes when the
  drivers are not active.

pwm/
  Provides the "upper half" of a pulse width modulation (PWM) driver.
  The "lower half" of the PWM driver is provided by device-specific
  logic.  See include/nuttx/timers/pwm.h for usage information.

sensors/
  Drivers for various sensors.  A sensor driver differs little from
  other types of drivers other than they are use to provide measurements
  of things in environment like temperature, orientation, acceleration,
  altitude, direction, position, etc.

  DACs might fit this definition of a sensor driver as well since they
  measure and convert voltage levels.  DACs, however, are retained in
  the analog/ sub-directory.

serial/
  Front-end character drivers for chip-specific UARTs.  This provide
  some TTY-like functionality and are commonly used (but not required for)
  the NuttX system console.  See also include/nuttx/serial/serial.h

spi/
  SPI drivers and support logic.  See include/nuttx/spi/spi.h

syslog/
  System logging devices. See include/syslog.h and include/nuttx/syslog/syslog.h

timers/
  Includes support for various timer devices including:

  - An "upper half" for a generic timer driver.  See
    include/nuttx/timers/timer.h for more information.

  - An "upper half" for a generic watchdog driver.  See
    include/nuttx/timers/watchdog.h for more information.

  - RTC drivers

usbdev/
  USB device drivers.  See also include/nuttx/usb/usbdev.h

usbhost/
  USB host drivers.  See also include/nuttx/usb/usbhost.h

video/
  Video-related drivers.  See include/nuttx/video/.

wireless/
  Drivers for various wireless devices.

Skeleton Files
^^^^^^^^^^^^^^

Skeleton files are "empty" frameworks for NuttX drivers.  They are provided to
give you a good starting point if you want to create a new NuttX driver.
The following skeleton files are available:

  drivers/lcd/skeleton.c -- Skeleton LCD driver
  drivers/mtd/skeleton.c -- Skeleton memory technology device drivers
  drivers/net/skeleton.c -- Skeleton network/Ethernet drivers
  drivers/usbhost/usbhost_skeleton.c -- Skeleton USB host class driver