diff options
Diffstat (limited to 'os/hal/dox')
| -rw-r--r-- | os/hal/dox/adc.dox | 134 | ||||
| -rw-r--r-- | os/hal/dox/can.dox | 90 | ||||
| -rw-r--r-- | os/hal/dox/hal.dox | 34 | ||||
| -rw-r--r-- | os/hal/dox/i2c.dox | 41 | ||||
| -rw-r--r-- | os/hal/dox/mac.dox | 29 | ||||
| -rw-r--r-- | os/hal/dox/mmc_spi.dox | 121 | ||||
| -rw-r--r-- | os/hal/dox/pal.dox | 71 | ||||
| -rw-r--r-- | os/hal/dox/pwm.dox | 66 | ||||
| -rw-r--r-- | os/hal/dox/serial.dox | 34 | ||||
| -rw-r--r-- | os/hal/dox/spi.dox | 89 | ||||
| -rw-r--r-- | os/hal/dox/uart.dox | 123 |
11 files changed, 832 insertions, 0 deletions
diff --git a/os/hal/dox/adc.dox b/os/hal/dox/adc.dox new file mode 100644 index 000000000..8e31d983b --- /dev/null +++ b/os/hal/dox/adc.dox @@ -0,0 +1,134 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup ADC ADC Driver
+ * @brief Generic ADC Driver.
+ * @details This module implements a generic ADC driver.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_ADC option
+ * must be enabled in @p halconf.h.
+ *
+ * @section adc_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @if LATEX_PDF
+ * @dot
+ digraph example {
+ size="5, 7";
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="ADC_STOP\nLow Power"];
+ uninit [label="ADC_UNINIT", style="bold"];
+ ready [label="ADC_READY\nClock Enabled"];
+ active [label="ADC_ACTIVE\nConverting"];
+ complete [label="ADC_COMPLETE\nComplete"];
+
+ uninit -> stop [label="\n adcInit()", constraint=false];
+ stop -> ready [label="\nadcStart()"];
+ ready -> ready [label="\nadcStart()\nadcStopConversion()"];
+ ready -> stop [label="\nadcStop()"];
+ stop -> stop [label="\nadcStop()"];
+ ready -> active [label="\nadcStartConversion() (async)\nadcConvert() (sync)"];
+ active -> ready [label="\nadcStopConversion()\nsync return"];
+ active -> active [label="\nasync callback (half buffer)\nasync callback (full buffer circular)\n>acg_endcb<"];
+ active -> complete [label="\nasync callback (full buffer)\n>acg_endcb<"];
+ complete -> active [label="\nadcStartConversionI()\nthen\ncallback return()"];
+ complete -> ready [label="\ncallback return"];
+ }
+ * @enddot
+ * @else
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="ADC_STOP\nLow Power"];
+ uninit [label="ADC_UNINIT", style="bold"];
+ ready [label="ADC_READY\nClock Enabled"];
+ active [label="ADC_ACTIVE\nConverting"];
+ complete [label="ADC_COMPLETE\nComplete"];
+
+ uninit -> stop [label="\n adcInit()", constraint=false];
+ stop -> ready [label="\nadcStart()"];
+ ready -> ready [label="\nadcStart()\nadcStopConversion()"];
+ ready -> stop [label="\nadcStop()"];
+ stop -> stop [label="\nadcStop()"];
+ ready -> active [label="\nadcStartConversion() (async)\nadcConvert() (sync)"];
+ active -> ready [label="\nadcStopConversion()\nsync return"];
+ active -> active [label="\nasync callback (half buffer)\nasync callback (full buffer circular)\n>acg_endcb<"];
+ active -> complete [label="\nasync callback (full buffer)\n>acg_endcb<"];
+ complete -> active [label="\nadcStartConversionI()\nthen\ncallback return()"];
+ complete -> ready [label="\ncallback return"];
+ }
+ * @enddot
+ * @endif
+ *
+ * @section adc_2 ADC Operations
+ * The ADC driver is quite complex, an explanation of the terminology and of
+ * the operational details follows.
+ *
+ * @subsection adc_2_1 ADC Conversion Groups
+ * The @p ADCConversionGroup is the objects that specifies a physical
+ * conversion operation. This structure contains some standard fields and
+ * several implementation-dependent fields.<br>
+ * The standard fields define the CG mode, the number of channels belonging
+ * to the CG and the optional callbacks.<br>
+ * The implementation-dependent fields specify the physical ADC operation
+ * mode, the analog channels belonging to the group and any other
+ * implementation-specific setting. Usually the extra fields just mirror
+ * the physical ADC registers, please refer to the vendor's MCU Reference
+ * Manual for details about the available settings. Details are also available
+ * into the documentation of the ADC low level drivers and in the various
+ * sample applications.
+ *
+ * @subsection adc_2_2 ADC Conversion Modes
+ * The driver supports several conversion modes:
+ * - <b>One Shot</b>, the driver performs a single group conversion then stops.
+ * - <b>Linear Buffer</b>, the driver performs a series of group conversions
+ * then stops. This mode is like a one shot conversion repeated N times,
+ * the buffer pointer increases after each conversion. The buffer is
+ * organized as an S(CG)*N samples matrix, when S(CG) is the conversion
+ * group size (number of channels) and N is the buffer depth (number of
+ * repeated conversions).
+ * - <b>Circular Buffer</b>, much like the linear mode but the operation does
+ * not stop when the buffer is filled, it is automatically restarted
+ * with the buffer pointer wrapping back to the buffer base.
+ * .
+ * @subsection adc_2_3 ADC Callbacks
+ * The driver is able to invoke callbacks during the conversion process. A
+ * callback is invoked when the operation has been completed or, in circular
+ * mode, when the buffer has been filled and the operation is restarted. In
+ * linear and circular modes a callback is also invoked when the buffer is
+ * half filled.<br>
+ * The "half filled" and "filled" callbacks in circular mode allow to
+ * implement "streaming processing" of the sampled data, while the driver is
+ * busy filling one half of the buffer the application can process the
+ * other half, this allows for continuous interleaved operations.
+ *
+ * The driver is not thread safe for performance reasons, if you need to access
+ * the ADC bus from multiple threads then use the @p adcAcquireBus() and
+ * @p adcReleaseBus() APIs in order to gain exclusive access.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/can.dox b/os/hal/dox/can.dox new file mode 100644 index 000000000..44c11c1de --- /dev/null +++ b/os/hal/dox/can.dox @@ -0,0 +1,90 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup CAN CAN Driver
+ * @brief Generic CAN Driver.
+ * @details This module implements a generic CAN driver.
+ * @pre In order to use the CAN driver the @p CH_HAL_USE_CAN option
+ * must be enabled in @p halconf.h.
+ *
+ * @section can_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @if LATEX_PDF
+ * @dot
+ digraph example {
+ size="5, 7";
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="CAN_STOP\nLow Power"];
+ uninit [label="CAN_UNINIT", style="bold"];
+ starting [label="CAN_STARTING\nInitializing"];
+ ready [label="CAN_READY\nClock Enabled"];
+ sleep [label="CAN_SLEEP\nLow Power"];
+
+ uninit -> stop [label=" canInit()", constraint=false];
+ stop -> stop [label="\ncanStop()"];
+ stop -> ready [label="\ncanStart()\n(fast implementation)"];
+ stop -> starting [label="\ncanStart()\n(slow implementation)"];
+ starting -> starting [label="\ncanStart()\n(other thread)"];
+ starting -> ready [label="\ninitialization complete\n(all threads)"];
+ ready -> stop [label="\ncanStop()"];
+ ready -> ready [label="\ncanStart()\ncanReceive()\ncanTransmit()"];
+ ready -> sleep [label="\ncanSleep()"];
+ sleep -> sleep [label="\ncanSleep()"];
+ sleep -> ready [label="\ncanWakeup()"];
+ sleep -> ready [label="\nhardware\nwakeup event"];
+ }
+ * @enddot
+ * @else
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="CAN_STOP\nLow Power"];
+ uninit [label="CAN_UNINIT", style="bold"];
+ starting [label="CAN_STARTING\nInitializing"];
+ ready [label="CAN_READY\nClock Enabled"];
+ sleep [label="CAN_SLEEP\nLow Power"];
+
+ uninit -> stop [label=" canInit()", constraint=false];
+ stop -> stop [label="\ncanStop()"];
+ stop -> ready [label="\ncanStart()\n(fast implementation)"];
+ stop -> starting [label="\ncanStart()\n(slow implementation)"];
+ starting -> starting [label="\ncanStart()\n(other thread)"];
+ starting -> ready [label="\ninitialization complete\n(all threads)"];
+ ready -> stop [label="\ncanStop()"];
+ ready -> ready [label="\ncanStart()\ncanReceive()\ncanTransmit()"];
+ ready -> sleep [label="\ncanSleep()"];
+ sleep -> sleep [label="\ncanSleep()"];
+ sleep -> ready [label="\ncanWakeup()"];
+ sleep -> ready [label="\nhardware\nwakeup event"];
+ }
+ * @enddot
+ * @endif
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/hal.dox b/os/hal/dox/hal.dox new file mode 100644 index 000000000..02d09c0d8 --- /dev/null +++ b/os/hal/dox/hal.dox @@ -0,0 +1,34 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup HAL HAL Driver
+ * @brief Hardware Abstraction Layer.
+ * @details The HAL driver performs the system initialization and includes
+ * the platform support code shared by the other drivers. This driver does
+ * contain any API function except for a general initialization function
+ * @p halInit() that must be invoked before any HAL service can be used,
+ * usually the HAL initialization should be performed immediately before the
+ * kernel initialization.<br>
+ * Some HAL driver implementations also offer a custom early clock
+ * setum function that can be invoked before the C runtime initialization
+ * in order to accellerate the startup time.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/i2c.dox b/os/hal/dox/i2c.dox new file mode 100644 index 000000000..dfac0fb7c --- /dev/null +++ b/os/hal/dox/i2c.dox @@ -0,0 +1,41 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup I2C I2C Driver
+ * @brief Generic I2C Driver.
+ * @details This module implements a generic I2C driver.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_I2C option
+ * must be enabled in @p halconf.h.
+ *
+ * @section i2c_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @if LATEX_PDF
+ * @else
+ * @endif
+ *
+ * The driver is not thread safe for performance reasons, if you need to access
+ * the I2C bus from multiple thread then use the @p i2cAcquireBus() and
+ * @p i2cReleaseBus() APIs in order to gain exclusive access.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/mac.dox b/os/hal/dox/mac.dox new file mode 100644 index 000000000..b3aca74ab --- /dev/null +++ b/os/hal/dox/mac.dox @@ -0,0 +1,29 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup MAC MAC Driver
+ * @brief Generic MAC driver.
+ * @details This module implements a generic interface for MAC (Media
+ * Access Control) drivers, as example Ethernet controllers.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_MAC option
+ * must be enabled in @p halconf.h.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/mmc_spi.dox b/os/hal/dox/mmc_spi.dox new file mode 100644 index 000000000..65e66391e --- /dev/null +++ b/os/hal/dox/mmc_spi.dox @@ -0,0 +1,121 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup MMC_SPI MMC over SPI Driver
+ * @brief Generic MMC driver.
+ * @details This module implements a portable MMC driver that uses a SPI
+ * driver as physical layer.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_MMC_SPI option
+ * must be enabled in @p halconf.h.
+ *
+ * @section mmc_spi_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @if LATEX_PDF
+ * @dot
+ digraph example {
+ size="5, 7";
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ any [label="Any State"];
+ stop2 [label="MMC_STOP\nLow Power"];
+ uninit [label="MMC_UNINIT", style="bold"];
+ stop [label="MMC_STOP\nLow Power"];
+ wait [label="MMC_WAIT\nWaiting Card"];
+ inserted [label="MMC_INSERTED\nCard Inserted"];
+ ready [label="MMC_READY\nCard Ready"];
+ reading [label="MMC_READING\nReading"];
+ writing [label="MMC_WRITING\nWriting"];
+
+ uninit -> stop [label="mmcInit()"];
+ stop -> wait [label="mmcStart()", constraint=false];
+ wait -> inserted [label="insertion (inserted event)"];
+ inserted -> inserted [label="mmcDisconnect()"];
+ inserted -> ready [label="mmcConnect()"];
+ ready -> ready [label="mmcConnect()"];
+ ready -> inserted [label="mmcDisconnect()"];
+ ready -> reading [label="mmcStartSequentialRead()"];
+ reading -> reading [label="mmcSequentialRead()"];
+ reading -> ready [label="mmcStopSequentialRead()"];
+ reading -> ready [label="read error"];
+ ready -> writing [label="mmcStartSequentialWrite()"];
+ writing -> writing [label="mmcSequentialWrite()"];
+ writing -> ready [label="mmcStopSequentialWrite()"];
+ writing -> ready [label="write error"];
+ inserted -> wait [label="removal (removed event)"];
+ ready -> wait [label="removal (removed event)"];
+ reading -> wait [label="removal (removed event)"];
+ writing -> wait [label="removal (removed event)"];
+
+ any -> stop2 [label="mmcStop()"];
+ }
+ * @enddot
+ * @else
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ any [label="Any State"];
+ stop2 [label="MMC_STOP\nLow Power"];
+ uninit [label="MMC_UNINIT", style="bold"];
+ stop [label="MMC_STOP\nLow Power"];
+ wait [label="MMC_WAIT\nWaiting Card"];
+ inserted [label="MMC_INSERTED\nCard Inserted"];
+ ready [label="MMC_READY\nCard Ready"];
+ reading [label="MMC_READING\nReading"];
+ writing [label="MMC_WRITING\nWriting"];
+
+ uninit -> stop [label="mmcInit()"];
+ stop -> wait [label="mmcStart()", constraint=false];
+ wait -> inserted [label="insertion (inserted event)"];
+ inserted -> inserted [label="mmcDisconnect()"];
+ inserted -> ready [label="mmcConnect()"];
+ ready -> ready [label="mmcConnect()"];
+ ready -> inserted [label="mmcDisconnect()"];
+ ready -> reading [label="mmcStartSequentialRead()"];
+ reading -> reading [label="mmcSequentialRead()"];
+ reading -> ready [label="mmcStopSequentialRead()"];
+ reading -> ready [label="read error"];
+ ready -> writing [label="mmcStartSequentialWrite()"];
+ writing -> writing [label="mmcSequentialWrite()"];
+ writing -> ready [label="mmcStopSequentialWrite()"];
+ writing -> ready [label="write error"];
+ inserted -> wait [label="removal (removed event)"];
+ ready -> wait [label="removal (removed event)"];
+ reading -> wait [label="removal (removed event)"];
+ writing -> wait [label="removal (removed event)"];
+
+ any -> stop2 [label="mmcStop()"];
+ }
+ * @enddot
+ * @endif
+ *
+ * The MMC drivers currently supports only cards with capacity up to 2GB
+ * and does not implement CRC checking. Hot plugging and removal are supported
+ * through kernel events.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/pal.dox b/os/hal/dox/pal.dox new file mode 100644 index 000000000..12a1192be --- /dev/null +++ b/os/hal/dox/pal.dox @@ -0,0 +1,71 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup PAL PAL Driver
+ * @brief I/O Ports Abstraction Layer
+ * @details This module defines an abstract interface for digital I/O ports.
+ * Note that most I/O ports functions are just macros. The macros
+ * have default software implementations that can be redefined in a
+ * PAL Low Level Driver if the target hardware supports special features like,
+ * as example, atomic bit set/reset/masking. Please refer to the ports specific
+ * documentation for details.<br>
+ * The @ref PAL has the advantage to make the access to the I/O ports platform
+ * independent and still be optimized for the specific architectures.<br>
+ * Note that the PAL Low Level Driver may also offer non standard macro and
+ * functions in order to support specific features but, of course, the use of
+ * such interfaces would not be portable. Such interfaces shall be marked with
+ * the architecture name inside the function names.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_PAL option
+ * must be enabled in @p halconf.h.
+ *
+ * @section pal_1 Implementation Rules
+ * In implementing a PAL Low Level Driver there are some rules/behaviors that
+ * should be respected.
+ *
+ * @subsection pal_1_1 Writing on input pads
+ * The behavior is not specified but there are implementations better than
+ * others, this is the list of possible implementations, preferred options
+ * are on top:
+ * -# The written value is not actually output but latched, should the pads
+ * be reprogrammed as outputs the value would be in effect.
+ * -# The write operation is ignored.
+ * -# The write operation has side effects, as example disabling/enabling
+ * pull up/down resistors or changing the pad direction. This scenario is
+ * discouraged, please try to avoid this scenario.
+ * .
+ * @subsection pal_1_2 Reading from output pads
+ * The behavior is not specified but there are implementations better than
+ * others, this is the list of possible implementations, preferred options
+ * are on top:
+ * -# The actual pads states are read (not the output latch).
+ * -# The output latch value is read (regardless of the actual pads states).
+ * -# Unspecified, please try to avoid this scenario.
+ * .
+ * @subsection pal_1_3 Writing unused or unimplemented port bits
+ * The behavior is not specified.
+ *
+ * @subsection pal_1_4 Reading from unused or unimplemented port bits
+ * The behavior is not specified.
+ *
+ * @subsection pal_1_5 Reading or writing on pins associated to other functionalities
+ * The behavior is not specified.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/pwm.dox b/os/hal/dox/pwm.dox new file mode 100644 index 000000000..ebc3731ab --- /dev/null +++ b/os/hal/dox/pwm.dox @@ -0,0 +1,66 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup PWM PWM Driver
+ * @brief Generic PWM Driver.
+ * @details This module implements a generic PWM driver.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_PWM option
+ * must be enabled in @p halconf.h.
+ *
+ * @section pwm_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+ uninit [label="PWM_UNINIT", style="bold"];
+ stop [label="PWM_STOP\nLow Power"];
+ ready [label="PWM_READY\nClock Enabled"];
+ uninit -> stop [label="pwmInit()"];
+ stop -> stop [label="pwmStop()"];
+ stop -> ready [label="pwmStart()"];
+ ready -> stop [label="pwmStop()"];
+ ready -> ready [label="pwmEnableChannel()\npwmDisableChannel()"];
+ }
+ * @enddot
+ *
+ * @section pwm_1 PWM Operations.
+ * This driver abstracts a generic PWM times composed of:
+ * - A main up counter.
+ * - A comparator register that resets the main counter to zero when the limit
+ * is reached. An optional callback can be generated when this happens.
+ * - An array of @p PWM_CHANNELS PWM channels, each channel has an output,
+ * a comparator and is able to invoke an optional callback when a comparator
+ * match with the main counter happens.
+ * .
+ * A PWM channel output can be in two different states:
+ * - <b>IDLE</b>, when the channel is disabled or after a match occurred.
+ * - <b>ACTIVE</b>, when the channel is enabled and a match didn't occur yet
+ * in the current PWM cycle.
+ * .
+ * Note that the two states can be associated to both logical zero or one in
+ * the @p PWMChannelConfig structure.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/serial.dox b/os/hal/dox/serial.dox new file mode 100644 index 000000000..f9d46d360 --- /dev/null +++ b/os/hal/dox/serial.dox @@ -0,0 +1,34 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup SERIAL Serial Driver
+ * @brief Generic Serial Driver.
+ * @details This module implements a generic full duplex serial driver. The
+ * driver implements a @p SerialDriver interface and uses I/O Queues for
+ * communication between the upper and the lower driver. Event flags are used
+ * to notify the application about incoming data, outgoing data and other I/O
+ * events.<br>
+ * The module also contains functions that make the implementation of the
+ * interrupt service routines much easier.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_SERIAL option
+ * must be enabled in @p halconf.h.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/spi.dox b/os/hal/dox/spi.dox new file mode 100644 index 000000000..732536a17 --- /dev/null +++ b/os/hal/dox/spi.dox @@ -0,0 +1,89 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup SPI SPI Driver
+ * @brief Generic SPI Driver.
+ * @details This module implements a generic SPI driver.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_SPI option
+ * must be enabled in @p halconf.h.
+ *
+ * @section spi_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @if LATEX_PDF
+ * @dot
+ digraph example {
+ size="5, 7";
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="SPI_STOP\nLow Power"];
+ uninit [label="SPI_UNINIT", style="bold"];
+ ready [label="SPI_READY\nClock Enabled"];
+ active [label="SPI_ACTIVE\nBus Active"];
+ complete [label="SPI_COMPLETE\nComplete"];
+
+ uninit -> stop [label="\n spiInit()", constraint=false];
+ stop -> ready [label="\nspiStart()"];
+ ready -> ready [label="\nspiSelect()\nspiUnselect()\nspiStart()"];
+ ready -> stop [label="\nspiStop()"];
+ stop -> stop [label="\nspiStop()"];
+ ready -> active [label="\nspiStartXXXI() (async)\nspiXXX() (sync)"];
+ active -> ready [label="\nsync return"];
+ active -> complete [label="\nasync callback\n>spc_endcb<"];
+ complete -> active [label="\nspiStartXXXI() (async)\nthen\ncallback return"];
+ complete -> ready [label="\ncallback return"];
+ }
+ * @else
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ stop [label="SPI_STOP\nLow Power"];
+ uninit [label="SPI_UNINIT", style="bold"];
+ ready [label="SPI_READY\nClock Enabled"];
+ active [label="SPI_ACTIVE\nBus Active"];
+ complete [label="SPI_COMPLETE\nComplete"];
+
+ uninit -> stop [label="\n spiInit()", constraint=false];
+ stop -> ready [label="\nspiStart()"];
+ ready -> ready [label="\nspiSelect()\nspiUnselect()\nspiStart()"];
+ ready -> stop [label="\nspiStop()"];
+ stop -> stop [label="\nspiStop()"];
+ ready -> active [label="\nspiStartXXX() (async)\nspiXXX() (sync)"];
+ active -> ready [label="\nsync return"];
+ active -> complete [label="\nasync callback\n>spc_endcb<"];
+ complete -> active [label="\nspiStartXXXI() (async)\nthen\ncallback return"];
+ complete -> ready [label="\ncallback return"];
+ }
+ * @enddot
+ * @endif
+ *
+ * The driver is not thread safe for performance reasons, if you need to access
+ * the SPI bus from multiple threads then use the @p spiAcquireBus() and
+ * @p spiReleaseBus() APIs in order to gain exclusive access.
+ *
+ * @ingroup IO
+ */
diff --git a/os/hal/dox/uart.dox b/os/hal/dox/uart.dox new file mode 100644 index 000000000..00753195d --- /dev/null +++ b/os/hal/dox/uart.dox @@ -0,0 +1,123 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup UART UART Driver
+ * @brief Generic UART Driver.
+ * @details This driver abstracts a generic UART peripheral, the API is
+ * designed to be:
+ * - Unbuffered and copy-less, transfers are always directly performed
+ * from/to the application-level buffers without extra copy operations.
+ * - Asynchronous, the API is always non blocking.
+ * - Callbacks capable, operations completion and other events are notified
+ * via callbacks.
+ * .
+ * Special hardware features like deep hardware buffers, DMA transfers
+ * are hidden to the user but fully supportable by the low level
+ * implementations.<br>
+ * This driver model is best used where communication events are meant to
+ * drive an higher level state machine, as example:
+ * - RS485 drivers.
+ * - Multipoint network drivers.
+ * - Serial protocol decoders.
+ * .
+ * If your application requires a synchronoyus buffered driver then the
+ * @ref SERIAL should be used instead.
+ * @pre In order to use the ADC driver the @p CH_HAL_USE_UART option
+ * must be enabled in @p halconf.h.
+ *
+ * @section uart_1 Driver State Machine
+ * The driver implements a state machine internally, not all the driver
+ * functionalities can be used in any moment, any transition not explicitly
+ * shown in the following diagram has to be considered an error and shall
+ * be captured by an assertion (if enabled).
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ uninit [label="UART_UNINIT", style="bold"];
+ stop [label="UART_STOP\nLow Power"];
+ ready [label="UART_READY\nClock Enabled"];
+
+ uninit -> stop [label="\nuartInit()"];
+ stop -> ready [label="\nuartStart()"];
+ ready -> ready [label="\nuartStart()"];
+ ready -> stop [label="\nuartStop()"];
+ stop -> stop [label="\nuartStop()"];
+ }
+ * @enddot
+ *
+ * @subsection uart_1_1 Transmitter sub State Machine
+ * The follow diagram describes the transmitter state machine, this diagram
+ * is valid while the driver is in the @p UART_READY state. This state
+ * machine is automatically reset to the @p TX_IDLE state each time the
+ * driver enters the @p UART_READY state.
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ tx_idle [label="TX_IDLE", style="bold"];
+ tx_active [label="TX_ACTIVE"];
+ tx_complete [label="TX_COMPLETE"];
+ tx_fatal [label="Fatal Error", style="bold"];
+
+ tx_idle -> tx_active [label="\nuartStartSend()"];
+ tx_idle -> tx_idle [label="\nuartStopSend()\n>uc_txend2<"];
+ tx_active -> tx_complete [label="\nbuffer transmitted\n>uc_txend1<"];
+ tx_active -> tx_idle [label="\nuartStopSend()"];
+ tx_active -> tx_fatal [label="\nuartStartSend()"];
+ tx_complete -> tx_active [label="\nuartStartSendI()\nthen\ncallback return"];
+ tx_complete -> tx_idle [label="\ncallback return"];
+ }
+ * @enddot
+ *
+ * @subsection uart_1_2 Receiver sub State Machine
+ * The follow diagram describes the receiver state machine, this diagram
+ * is valid while the driver is in the @p UART_READY state. This state
+ * machine is automatically reset to the @p RX_IDLE state each time the
+ * driver enters the @p UART_READY state.
+ * @dot
+ digraph example {
+ rankdir="LR";
+ node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
+ edge [fontname=Helvetica, fontsize=8];
+
+ rx_idle [label="RX_IDLE", style="bold"];
+ rx_active [label="RX_ACTIVE"];
+ rx_complete [label="RX_COMPLETE"];
+ rx_fatal [label="Fatal Error", style="bold"];
+
+ rx_idle -> rx_idle [label="\nuartStopReceive()\n>uc_rxchar<\n>uc_rxerr<"];
+ rx_idle -> rx_active [label="\nuartStartReceive()"];
+
+ rx_active -> rx_complete [label="\nbuffer filled\n>uc_rxend<"];
+ rx_active -> rx_idle [label="\nuartStopReceive()"];
+ rx_active -> rx_active [label="\nreceive error\n>uc_rxerr<"];
+ rx_active -> rx_fatal [label="\nuartStartReceive()"];
+ rx_complete -> rx_active [label="\nuartStartReceiveI()\nthen\ncallback return"];
+ rx_complete -> rx_idle [label="\ncallback return"];
+ }
+ * @enddot
+ *
+ * @ingroup IO
+ */
|