diff options
Diffstat (limited to 'LUFA/Drivers/Peripheral')
| -rw-r--r-- | LUFA/Drivers/Peripheral/ADC.h | 72 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h | 411 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h | 155 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/SPI.h | 208 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/Serial.c | 54 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/Serial.h | 167 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/SerialStream.c | 54 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/SerialStream.h | 116 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/TWI.c | 75 | ||||
| -rw-r--r-- | LUFA/Drivers/Peripheral/TWI.h | 72 |
10 files changed, 1384 insertions, 0 deletions
diff --git a/LUFA/Drivers/Peripheral/ADC.h b/LUFA/Drivers/Peripheral/ADC.h new file mode 100644 index 0000000..d172584 --- /dev/null +++ b/LUFA/Drivers/Peripheral/ADC.h @@ -0,0 +1,72 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Master include file for the ADC peripheral driver.
+ *
+ * This file is the master dispatch header file for the device-specific ADC driver, for AVRs containing an ADC.
+ *
+ * User code should include this file, which will in turn include the correct ADC driver header file for the
+ * currently selected AVR model.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ * @defgroup Group_ADC ADC Driver - LUFA/Drivers/Peripheral/ADC.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - None
+ *
+ * \section Module Description
+ * Hardware ADC driver. This module provides an easy to use driver for the hardware
+ * ADC present on many AVR models, for the conversion of analogue signals into the
+ * digital domain.
+ */
+
+#ifndef __ADC_H__
+#define __ADC_H__
+
+ /* Macros: */
+ #if !defined(__DOXYGEN__)
+ #define __INCLUDE_FROM_ADC_H
+ #endif
+
+ /* Includes: */
+ #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || \
+ defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || \
+ defined(__AVR_ATmega32U6__))
+ #include "AVRU4U6U7/ADC.h"
+ #else
+ #error "ADC is not available for the currently selected AVR model."
+ #endif
+
+#endif
+
diff --git a/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h new file mode 100644 index 0000000..9a72cd2 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h @@ -0,0 +1,411 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief ADC peripheral driver for the U7, U6 and U4 USB AVRs.
+ *
+ * On-chip Analogue-to-Digital converter (ADC) driver for supported U4, U6 and U7 model AVRs that contain an ADC
+ * peripheral internally.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the ADC driver
+ * dispatch header located in LUFA/Drivers/Peripheral/ADC.h.
+ */
+
+/** \ingroup Group_ADC
+ * @defgroup Group_ADC_AVRU4U6U7 Series U4, U6 and U7 Model ADC Driver
+ *
+ * On-chip Analogue-to-Digital converter (ADC) driver for supported U4, U6 and U7 model AVRs that contain an ADC
+ * peripheral internally.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the ADC driver
+ * dispatch header located in LUFA/Drivers/Peripheral/ADC.h.
+ *
+ * @{
+ */
+
+#ifndef __ADC_AVRU4U6U7_H__
+#define __ADC_AVRU4U6U7_H__
+
+ /* Includes: */
+ #include "../../../Common/Common.h"
+
+ #include <avr/io.h>
+ #include <stdbool.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_ADC_H)
+ #error Do not include this file directly. Include LUFA/Drivers/Peripheral/ADC.h instead.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** \name ADC Reference Configuration Masks */
+ //@{
+ /** Reference mask, for using the voltage present at the AVR's AREF pin for the ADC reference. */
+ #define ADC_REFERENCE_AREF 0
+
+ /** Reference mask, for using the voltage present at the AVR's AVCC pin for the ADC reference. */
+ #define ADC_REFERENCE_AVCC (1 << REFS0)
+
+ /** Reference mask, for using the internally generated 2.56V reference voltage as the ADC reference. */
+ #define ADC_REFERENCE_INT2560MV ((1 << REFS1) | (1 << REFS0))
+ //@}
+
+ /** \name ADC Result Adjustment Configuration Masks */
+ //@{
+ /** Left-adjusts the 10-bit ADC result, so that the upper 8 bits of the value returned by the
+ * ADC_GetResult() macro contain the 8 most significant bits of the result.
+ */
+ #define ADC_LEFT_ADJUSTED (1 << ADLAR)
+
+ /** Right-adjusts the 10-bit ADC result, so that the lower 8 bits of the value returned by the
+ * ADC_GetResult() macro contain the 8 least significant bits of the result.
+ */
+ #define ADC_RIGHT_ADJUSTED (0 << ADLAR)
+ //@}
+
+ /** \name ADC Mode Configuration Masks */
+ //@{
+ /** Sets the ADC mode to free running, so that conversions take place continuously as fast as the ADC
+ * is capable of at the given input clock speed.
+ */
+ #define ADC_FREE_RUNNING (1 << ADATE)
+
+ /** Sets the ADC mode to single conversion, so that only a single conversion will take place before
+ * the ADC returns to idle.
+ */
+ #define ADC_SINGLE_CONVERSION (0 << ADATE)
+ //@}
+
+ /** \name ADC Prescaler Configuration Masks */
+ //@{
+ /** Sets the ADC input clock to prescale by a factor of 2 the AVR's system clock. */
+ #define ADC_PRESCALE_2 (1 << ADPS0)
+
+ /** Sets the ADC input clock to prescale by a factor of 4 the AVR's system clock. */
+ #define ADC_PRESCALE_4 (1 << ADPS1)
+
+ /** Sets the ADC input clock to prescale by a factor of 8 the AVR's system clock. */
+ #define ADC_PRESCALE_8 ((1 << ADPS0) | (1 << ADPS1))
+
+ /** Sets the ADC input clock to prescale by a factor of 16 the AVR's system clock. */
+ #define ADC_PRESCALE_16 (1 << ADPS2)
+
+ /** Sets the ADC input clock to prescale by a factor of 32 the AVR's system clock. */
+ #define ADC_PRESCALE_32 ((1 << ADPS2) | (1 << ADPS0))
+
+ /** Sets the ADC input clock to prescale by a factor of 64 the AVR's system clock. */
+ #define ADC_PRESCALE_64 ((1 << ADPS2) | (1 << ADPS1))
+
+ /** Sets the ADC input clock to prescale by a factor of 128 the AVR's system clock. */
+ #define ADC_PRESCALE_128 ((1 << ADPS2) | (1 << ADPS1) | (1 << ADPS0))
+ //@}
+
+ /** \name ADC MUX Masks */
+ //@{
+ /** MUX mask define for the ADC0 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL0 (0x00 << MUX0)
+
+ /** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL1 (0x01 << MUX0)
+
+ #if !(defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
+ /** MUX mask define for the ADC2 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL2 (0x02 << MUX0)
+
+ /** MUX mask define for the ADC3 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL3 (0x03 << MUX0)
+ #endif
+
+ /** MUX mask define for the ADC4 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL4 (0x04 << MUX0)
+
+ /** MUX mask define for the ADC5 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL5 (0x05 << MUX0)
+
+ /** MUX mask define for the ADC6 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL6 (0x06 << MUX0)
+
+ /** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL7 (0x07 << MUX0)
+
+ /** MUX mask define for the internal 1.1V bandgap channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_1100MV_BANDGAP (0x1E << MUX0)
+
+ #if (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
+ /** MUX mask define for the ADC8 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL8 ((1 << 8) | (0x00 << MUX0))
+
+ /** MUX mask define for the ADC9 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL9 ((1 << 8) | (0x01 << MUX0))
+
+ /** MUX mask define for the ADC10 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL10 ((1 << 8) | (0x02 << MUX0))
+
+ /** MUX mask define for the ADC11 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL11 ((1 << 8) | (0x03 << MUX0))
+
+ /** MUX mask define for the ADC12 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL12 ((1 << 8) | (0x04 << MUX0))
+
+ /** MUX mask define for the ADC13 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_CHANNEL13 ((1 << 8) | (0x05 << MUX0))
+
+ /** MUX mask define for the internal temperature sensor channel of the ADC. See \ref ADC_StartReading and
+ * \ref ADC_GetChannelReading.
+ *
+ * \note Not available on all AVR models.
+ */
+ #define ADC_INT_TEMP_SENS ((1 << 8) | (0x07 << MUX0))
+ #endif
+ //@}
+
+ /* Inline Functions: */
+ /** Configures the given ADC channel, ready for ADC conversions. This function sets the
+ * associated port pin as an input and disables the digital portion of the I/O to reduce
+ * power consumption.
+ *
+ * \note This must only be called for ADC channels with are connected to a physical port
+ * pin of the AVR, denoted by its special alternative function ADCx.
+ * \n\n
+ *
+ * \note The channel number must be specified as an integer, and NOT a ADC_CHANNELx mask.
+ *
+ * \param[in] ChannelIndex ADC channel number to set up for conversions.
+ */
+ static inline void ADC_SetupChannel(const uint8_t ChannelIndex)
+ {
+ #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || \
+ defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_ATmega32U6__))
+ DDRF &= ~(1 << ChannelIndex);
+ DIDR0 |= (1 << ChannelIndex);
+ #elif (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__))
+ if (ChannelIndex < 8)
+ {
+ DDRF &= ~(1 << ChannelIndex);
+ DIDR0 |= (1 << ChannelIndex);
+ }
+ else if (ChannelIndex == 8)
+ {
+ DDRD &= ~(1 << 4);
+ DIDR2 |= (1 << 0);
+ }
+ else if (ChannelIndex < 11)
+ {
+ DDRD &= ~(1 << (ChannelIndex - 3));
+ DIDR2 |= (1 << (ChannelIndex - 8));
+ }
+ else
+ {
+ DDRB &= ~(1 << (ChannelIndex - 7));
+ DIDR2 |= (1 << (ChannelIndex - 8));
+ }
+ #endif
+ }
+
+ /** De-configures the given ADC channel, re-enabling digital I/O mode instead of analog. This
+ * function sets the associated port pin as an input and re-enabled the digital portion of
+ * the I/O.
+ *
+ * \note This must only be called for ADC channels with are connected to a physical port
+ * pin of the AVR, denoted by its special alternative function ADCx.
+ * \n\n
+ *
+ * \note The channel number must be specified as an integer, and NOT a ADC_CHANNELx mask.
+ *
+ * \param[in] ChannelIndex ADC channel number to set up for conversions.
+ */
+ static inline void ADC_DisableChannel(const uint8_t ChannelIndex)
+ {
+ #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || \
+ defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_ATmega32U6__))
+ DDRF &= ~(1 << ChannelIndex);
+ DIDR0 &= ~(1 << ChannelIndex);
+ #elif (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__))
+ if (ChannelIndex < 8)
+ {
+ DDRF &= ~(1 << ChannelIndex);
+ DIDR0 &= ~(1 << ChannelIndex);
+ }
+ else if (ChannelIndex == 8)
+ {
+ DDRD &= ~(1 << 4);
+ DIDR2 &= ~(1 << 0);
+ }
+ else if (ChannelIndex < 11)
+ {
+ DDRD &= ~(1 << (ChannelIndex - 3));
+ DIDR2 &= ~(1 << (ChannelIndex - 8));
+ }
+ else
+ {
+ DDRB &= ~(1 << (ChannelIndex - 7));
+ DIDR2 &= ~(1 << (ChannelIndex - 8));
+ }
+ #endif
+ }
+
+ /** Starts the reading of the given channel, but does not wait until the conversion has completed.
+ * Once executed, the conversion status can be determined via the \ref ADC_IsReadingComplete() macro and
+ * the result read via the \ref ADC_GetResult() macro.
+ *
+ * If the ADC has been initialized in free running mode, calling this function once will begin the repeated
+ * conversions. If the ADC is in single conversion mode (or the channel to convert from is to be changed),
+ * this function must be called each time a conversion is to take place.
+ *
+ * \param[in] MUXMask ADC channel mask, reference mask and adjustment mask.
+ */
+ static inline void ADC_StartReading(const uint16_t MUXMask)
+ {
+ ADMUX = MUXMask;
+
+ #if (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
+ if (MUXMask & (1 << 8))
+ ADCSRB |= (1 << MUX5);
+ else
+ ADCSRB &= ~(1 << MUX5);
+ #endif
+
+ ADCSRA |= (1 << ADSC);
+ }
+
+ /** Indicates if the current ADC conversion is completed, or still in progress.
+ *
+ * \return Boolean false if the reading is still taking place, or true if the conversion is
+ * complete and ready to be read out with \ref ADC_GetResult().
+ */
+ static inline bool ADC_IsReadingComplete(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool ADC_IsReadingComplete(void)
+ {
+ return ((ADCSRA & (1 << ADIF)) ? true : false);
+ }
+
+ /** Retrieves the conversion value of the last completed ADC conversion and clears the reading
+ * completion flag.
+ *
+ * \return The result of the last ADC conversion as an unsigned value.
+ */
+ static inline uint16_t ADC_GetResult(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint16_t ADC_GetResult(void)
+ {
+ ADCSRA |= (1 << ADIF);
+ return ADC;
+ }
+
+ /** Performs a complete single reading from channel, including a polling spin-loop to wait for the
+ * conversion to complete, and the returning of the converted value.
+ *
+ * \note For free running mode, the automated conversions should be initialized with a single call
+ * to \ref ADC_StartReading() to select the channel and begin the automated conversions, and
+ * the results read directly from the \ref ADC_GetResult() instead to reduce overhead.
+ *
+ * \param[in] MUXMask Mask comprising of an ADC channel mask, reference mask and adjustment mask.
+ */
+ static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask) ATTR_WARN_UNUSED_RESULT;
+ static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask)
+ {
+ ADC_StartReading(MUXMask);
+
+ while (!(ADC_IsReadingComplete()));
+
+ return ADC_GetResult();
+ }
+
+ /** Initialises the ADC, ready for conversions. This must be called before any other ADC operations.
+ * The "mode" parameter should be a mask comprised of a conversion mode (free running or single) and
+ * prescaler masks.
+ *
+ * \param[in] Mode Mask of ADC prescale and mode settings.
+ */
+ static inline void ADC_Init(uint8_t Mode) ATTR_ALWAYS_INLINE;
+ static inline void ADC_Init(uint8_t Mode)
+ {
+ ADCSRA = ((1 << ADEN) | Mode);
+ }
+
+ /** Turns off the ADC. If this is called, any further ADC operations will require a call to
+ * \ref ADC_Init() before the ADC can be used again.
+ */
+ static inline void ADC_ShutDown(void) ATTR_ALWAYS_INLINE;
+ static inline void ADC_ShutDown(void)
+ {
+ ADCSRA = 0;
+ }
+
+ /** Indicates if the ADC is currently enabled.
+ *
+ * \return Boolean true if the ADC subsystem is currently enabled, false otherwise.
+ */
+ static inline bool ADC_GetStatus(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool ADC_GetStatus(void)
+ {
+ return ((ADCSRA & (1 << ADEN)) ? true : false);
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
diff --git a/LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h new file mode 100644 index 0000000..a797990 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h @@ -0,0 +1,155 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief TWI peripheral driver for the U7, U6 and U4 USB AVRs.
+ *
+ * Master mode TWI driver for the AT90USB1287, AT90USB1286, AT90USB647, AT90USB646, ATMEGA16U4 and ATMEGA32U4 AVRs.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the TWI driver
+ * dispatch header located in LUFA/Drivers/Peripheral/TWI.h.
+ */
+
+/** \ingroup Group_TWI
+ * @defgroup Group_TWI_AVRU4U6U7 Series U4, U6 and U7 Model TWI Driver
+ *
+ * Master mode TWI driver for the AT90USB1287, AT90USB1286, AT90USB647, AT90USB646, ATMEGA16U4 and ATMEGA32U4 AVRs.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the TWI driver
+ * dispatch header located in LUFA/Drivers/Peripheral/TWI.h.
+ *
+ * @{
+ */
+
+#ifndef __TWI_AVRU4U6U7_H__
+#define __TWI_AVRU4U6U7_H__
+
+ /* Includes: */
+ #include "../../../Common/Common.h"
+
+ #include <avr/io.h>
+ #include <stdbool.h>
+ #include <util/twi.h>
+ #include <util/delay.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_TWI_H)
+ #error Do not include this file directly. Include LUFA/Drivers/Peripheral/TWI.h instead.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Inline Functions: */
+ /** Initialises the TWI hardware into master mode, ready for data transmission and reception. This must be
+ * before any other TWI operations.
+ */
+ static inline void TWI_Init(void) ATTR_ALWAYS_INLINE;
+ static inline void TWI_Init(void)
+ {
+ TWCR |= (1 << TWEN);
+ }
+
+ /** Turns off the TWI driver hardware. If this is called, any further TWI operations will require a call to
+ * \ref TWI_Init() before the TWI can be used again.
+ */
+ static inline void TWI_ShutDown(void) ATTR_ALWAYS_INLINE;
+ static inline void TWI_ShutDown(void)
+ {
+ TWCR &= ~(1 << TWEN);
+ }
+
+ /** Sends a TWI STOP onto the TWI bus, terminating communication with the currently addressed device. */
+ static inline void TWI_StopTransmission(void) ATTR_ALWAYS_INLINE;
+ static inline void TWI_StopTransmission(void)
+ {
+ TWCR = ((1 << TWINT) | (1 << TWSTO) | (1 << TWEN));
+ }
+
+ /** Sends a byte to the currently addressed device on the TWI bus.
+ *
+ * \param[in] Byte Byte to send to the currently addressed device
+ *
+ * \return Boolean true if the recipient ACKed the byte, false otherwise
+ */
+ static inline bool TWI_SendByte(const uint8_t Byte)
+ {
+ TWDR = Byte;
+ TWCR = ((1 << TWINT) | (1 << TWEN));
+ while (!(TWCR & (1 << TWINT)));
+
+ return ((TWSR & TW_STATUS_MASK) == TW_MT_DATA_ACK);
+ }
+
+ /** Receives a byte from the currently addressed device on the TWI bus.
+ *
+ * \param[in] Byte Location where the read byte is to be stored
+ * \param[in] LastByte Indicates if the byte should be ACKed if false, NAKed if true
+ *
+ * \return Boolean true if the byte reception successfully completed, false otherwise
+ */
+ static inline bool TWI_ReceiveByte(uint8_t* const Byte,
+ const bool LastByte)
+ {
+ uint8_t TWCRMask = ((1 << TWINT) | (1 << TWEN));
+
+ if (!(LastByte))
+ TWCRMask |= (1 << TWEA);
+
+ TWCR = TWCRMask;
+ while (!(TWCR & (1 << TWINT)));
+ *Byte = TWDR;
+
+ return ((TWSR & TW_STATUS_MASK) == TW_MR_DATA_ACK);
+ }
+
+ /* Function Prototypes: */
+ /** Begins a master mode TWI bus communication with the given slave device address.
+ *
+ * \param[in] SlaveAddress Address of the slave TWI device to communicate with
+ * \param[in] TimeoutMS Timeout period within which the slave must respond, in milliseconds
+ *
+ * \return Boolean true if the device is ready for data, false otherwise
+ */
+ bool TWI_StartTransmission(const uint8_t SlaveAddress,
+ const uint8_t TimeoutMS);
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
diff --git a/LUFA/Drivers/Peripheral/SPI.h b/LUFA/Drivers/Peripheral/SPI.h new file mode 100644 index 0000000..957325e --- /dev/null +++ b/LUFA/Drivers/Peripheral/SPI.h @@ -0,0 +1,208 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Master include file for the SPI peripheral driver.
+ *
+ * Hardware SPI subsystem driver for the supported USB AVRs models.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ * @defgroup Group_SPI SPI Driver - LUFA/Drivers/Peripheral/SPI.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - None
+ *
+ * \section Module Description
+ * Driver for the hardware SPI port available on most AVR models. This module provides
+ * an easy to use driver for the setup of and transfer of data over the AVR's SPI port.
+ *
+ * @{
+ */
+
+#ifndef __SPI_H__
+#define __SPI_H__
+
+ /* Includes: */
+ #include <stdbool.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Macros: */
+ #define SPI_USE_DOUBLESPEED (1 << SPE)
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** \name SPI Prescaler Configuration Masks */
+ //@{
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 2. */
+ #define SPI_SPEED_FCPU_DIV_2 SPI_USE_DOUBLESPEED
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 4. */
+ #define SPI_SPEED_FCPU_DIV_4 0
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 8. */
+ #define SPI_SPEED_FCPU_DIV_8 (SPI_USE_DOUBLESPEED | (1 << SPR0))
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 16. */
+ #define SPI_SPEED_FCPU_DIV_16 (1 << SPR0)
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 32. */
+ #define SPI_SPEED_FCPU_DIV_32 (SPI_USE_DOUBLESPEED | (1 << SPR1))
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 64. */
+ #define SPI_SPEED_FCPU_DIV_64 (SPI_USE_DOUBLESPEED | (1 << SPR1) | (1 << SPR0))
+
+ /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 128. */
+ #define SPI_SPEED_FCPU_DIV_128 ((1 << SPR1) | (1 << SPR0))
+ //@}
+
+ /** \name SPI SCK Polarity Configuration Masks */
+ //@{
+ /** SPI clock polarity mask for SPI_Init(). Indicates that the SCK should lead on the rising edge. */
+ #define SPI_SCK_LEAD_RISING (0 << CPOL)
+
+ /** SPI clock polarity mask for SPI_Init(). Indicates that the SCK should lead on the falling edge. */
+ #define SPI_SCK_LEAD_FALLING (1 << CPOL)
+ //@}
+
+ /** \name SPI Sample Edge Configuration Masks */
+ //@{
+ /** SPI data sample mode mask for SPI_Init(). Indicates that the data should sampled on the leading edge. */
+ #define SPI_SAMPLE_LEADING (0 << CPHA)
+
+ /** SPI data sample mode mask for SPI_Init(). Indicates that the data should be sampled on the trailing edge. */
+ #define SPI_SAMPLE_TRAILING (1 << CPHA)
+ //@}
+
+ /** \name SPI Data Ordering Configuration Masks */
+ //@{
+ /** SPI data order mask for SPI_Init(). Indicates that data should be shifted out MSB first. */
+ #define SPI_ORDER_MSB_FIRST (0 << DORD)
+
+ /** SPI data order mask for SPI_Init(). Indicates that data should be shifted out MSB first. */
+ #define SPI_ORDER_LSB_FIRST (1 << DORD)
+ //@}
+
+ /** \name SPI Mode Configuration Masks */
+ //@{
+ /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into slave mode. */
+ #define SPI_MODE_SLAVE (0 << MSTR)
+
+ /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into master mode. */
+ #define SPI_MODE_MASTER (1 << MSTR)
+ //@}
+
+ /* Inline Functions: */
+ /** Initialises the SPI subsystem, ready for transfers. Must be called before calling any other
+ * SPI routines.
+ *
+ * \param[in] SPIOptions SPI Options, a mask consisting of one of each of the SPI_SPEED_*,
+ * SPI_SCK_*, SPI_SAMPLE_*, SPI_ORDER_* and SPI_MODE_* masks.
+ */
+ static inline void SPI_Init(const uint8_t SPIOptions)
+ {
+ DDRB |= ((1 << 1) | (1 << 2));
+ DDRB &= ~((1 << 0) | (1 << 3));
+ PORTB |= ((1 << 0) | (1 << 3));
+
+ SPCR = ((1 << SPE) | SPIOptions);
+
+ if (SPIOptions & SPI_USE_DOUBLESPEED)
+ SPSR |= (1 << SPI2X);
+ else
+ SPSR &= ~(1 << SPI2X);
+ }
+
+ /** Turns off the SPI driver, disabling and returning used hardware to their default configuration. */
+ static inline void SPI_ShutDown(void)
+ {
+ DDRB &= ~((1 << 1) | (1 << 2));
+ PORTB &= ~((1 << 0) | (1 << 3));
+
+ SPCR = 0;
+ SPSR = 0;
+ }
+
+ /** Sends and receives a byte through the SPI interface, blocking until the transfer is complete.
+ *
+ * \param[in] Byte Byte to send through the SPI interface.
+ *
+ * \return Response byte from the attached SPI device.
+ */
+ static inline uint8_t SPI_TransferByte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
+ static inline uint8_t SPI_TransferByte(const uint8_t Byte)
+ {
+ SPDR = Byte;
+ while (!(SPSR & (1 << SPIF)));
+ return SPDR;
+ }
+
+ /** Sends a byte through the SPI interface, blocking until the transfer is complete. The response
+ * byte sent to from the attached SPI device is ignored.
+ *
+ * \param[in] Byte Byte to send through the SPI interface.
+ */
+ static inline void SPI_SendByte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
+ static inline void SPI_SendByte(const uint8_t Byte)
+ {
+ SPDR = Byte;
+ while (!(SPSR & (1 << SPIF)));
+ }
+
+ /** Sends a dummy byte through the SPI interface, blocking until the transfer is complete. The response
+ * byte from the attached SPI device is returned.
+ *
+ * \return The response byte from the attached SPI device.
+ */
+ static inline uint8_t SPI_ReceiveByte(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
+ static inline uint8_t SPI_ReceiveByte(void)
+ {
+ SPDR = 0x00;
+ while (!(SPSR & (1 << SPIF)));
+ return SPDR;
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
diff --git a/LUFA/Drivers/Peripheral/Serial.c b/LUFA/Drivers/Peripheral/Serial.c new file mode 100644 index 0000000..fe41b20 --- /dev/null +++ b/LUFA/Drivers/Peripheral/Serial.c @@ -0,0 +1,54 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#include "Serial.h"
+
+void Serial_TxString_P(const char* FlashStringPtr)
+{
+ uint8_t CurrByte;
+
+ while ((CurrByte = pgm_read_byte(FlashStringPtr)) != 0x00)
+ {
+ Serial_TxByte(CurrByte);
+ FlashStringPtr++;
+ }
+}
+
+void Serial_TxString(const char* StringPtr)
+{
+ uint8_t CurrByte;
+
+ while ((CurrByte = *StringPtr) != 0x00)
+ {
+ Serial_TxByte(CurrByte);
+ StringPtr++;
+ }
+}
+
diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h new file mode 100644 index 0000000..9f42df6 --- /dev/null +++ b/LUFA/Drivers/Peripheral/Serial.h @@ -0,0 +1,167 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Master include file for the USART peripheral driver.
+ *
+ * Driver for the USART subsystem on supported USB AVRs.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ * @defgroup Group_Serial Serial USART Driver - LUFA/Drivers/Peripheral/Serial.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/Peripheral/Serial.c <i>(Makefile source module name: LUFA_SRC_SERIAL)</i>
+ *
+ * \section Module Description
+ * Hardware serial USART driver. This module provides an easy to use driver for
+ * the setup of and transfer of data over the AVR's USART port.
+ *
+ * @{
+ */
+
+#ifndef __SERIAL_H__
+#define __SERIAL_H__
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <avr/pgmspace.h>
+ #include <stdbool.h>
+
+ #include "../../Common/Common.h"
+ #include "../Misc/TerminalCodes.h"
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is
+ * not set.
+ */
+ #define SERIAL_UBBRVAL(baud) ((((F_CPU / 16) + (baud / 2)) / (baud)) - 1)
+
+ /** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is
+ * set.
+ */
+ #define SERIAL_2X_UBBRVAL(baud) ((((F_CPU / 8) + (baud / 2)) / (baud)) - 1)
+
+ /* Function Prototypes: */
+ /** Transmits a given string located in program space (FLASH) through the USART.
+ *
+ * \param[in] FlashStringPtr Pointer to a string located in program space.
+ */
+ void Serial_TxString_P(const char* FlashStringPtr) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Transmits a given string located in SRAM memory through the USART.
+ *
+ * \param[in] StringPtr Pointer to a string located in SRAM space.
+ */
+ void Serial_TxString(const char* StringPtr) ATTR_NON_NULL_PTR_ARG(1);
+
+ /* Inline Functions: */
+ /** Initializes the USART, ready for serial data transmission and reception. This initializes the interface to
+ * standard 8-bit, no parity, 1 stop bit settings suitable for most applications.
+ *
+ * \param[in] BaudRate Serial baud rate, in bits per second.
+ * \param[in] DoubleSpeed Enables double speed mode when set, halving the sample time to double the baud rate.
+ */
+ static inline void Serial_Init(const uint32_t BaudRate,
+ const bool DoubleSpeed)
+ {
+ UBRR1 = (DoubleSpeed ? SERIAL_2X_UBBRVAL(BaudRate) : SERIAL_UBBRVAL(BaudRate));
+
+ UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10));
+ UCSR1A = (DoubleSpeed ? (1 << U2X1) : 0);
+ UCSR1B = ((1 << TXEN1) | (1 << RXEN1));
+
+ DDRD |= (1 << 3);
+ PORTD |= (1 << 2);
+ }
+
+ /** Turns off the USART driver, disabling and returning used hardware to their default configuration. */
+ static inline void Serial_ShutDown(void)
+ {
+ UCSR1B = 0;
+ UCSR1A = 0;
+ UCSR1C = 0;
+
+ UBRR1 = 0;
+
+ DDRD &= ~(1 << 3);
+ PORTD &= ~(1 << 2);
+ }
+
+ /** Indicates whether a character has been received through the USART.
+ *
+ * \return Boolean true if a character has been received, false otherwise.
+ */
+ static inline bool Serial_IsCharReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Serial_IsCharReceived(void)
+ {
+ return ((UCSR1A & (1 << RXC1)) ? true : false);
+ }
+
+ /** Transmits a given byte through the USART.
+ *
+ * \param[in] DataByte Byte to transmit through the USART.
+ */
+ static inline void Serial_TxByte(const char DataByte) ATTR_ALWAYS_INLINE;
+ static inline void Serial_TxByte(const char DataByte)
+ {
+ while (!(UCSR1A & (1 << UDRE1)));
+ UDR1 = DataByte;
+ }
+
+ /** Receives a byte from the USART. This function blocks until a byte has been
+ * received; if non-blocking behaviour is required, test for a received character
+ * beforehand with \ref Serial_IsCharReceived().
+ *
+ * \return Byte received from the USART.
+ */
+ static inline char Serial_RxByte(void) ATTR_ALWAYS_INLINE;
+ static inline char Serial_RxByte(void)
+ {
+ while (!(UCSR1A & (1 << RXC1)));
+ return UDR1;
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
diff --git a/LUFA/Drivers/Peripheral/SerialStream.c b/LUFA/Drivers/Peripheral/SerialStream.c new file mode 100644 index 0000000..30aa5a4 --- /dev/null +++ b/LUFA/Drivers/Peripheral/SerialStream.c @@ -0,0 +1,54 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#define __INCLUDE_FROM_SERIALSTREAM_C
+#include "SerialStream.h"
+
+FILE USARTStream = FDEV_SETUP_STREAM(SerialStream_TxByte, SerialStream_RxByte, _FDEV_SETUP_RW);
+
+static int SerialStream_TxByte(char DataByte,
+ FILE *Stream)
+{
+ (void)Stream;
+
+ Serial_TxByte(DataByte);
+ return 0;
+}
+
+static int SerialStream_RxByte(FILE *Stream)
+{
+ (void)Stream;
+
+ if (!(Serial_IsCharReceived()))
+ return _FDEV_EOF;
+
+ return Serial_RxByte();
+}
+
diff --git a/LUFA/Drivers/Peripheral/SerialStream.h b/LUFA/Drivers/Peripheral/SerialStream.h new file mode 100644 index 0000000..3e37667 --- /dev/null +++ b/LUFA/Drivers/Peripheral/SerialStream.h @@ -0,0 +1,116 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Standard avr-libc character stream driver for the USART.
+ *
+ * Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
+ * regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
+ * puts, etc.) to work with the
+ * USART.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ * @defgroup Group_SerialStream Serial Stream Driver - LUFA/Drivers/Peripheral/SerialStream.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/Peripheral/SerialStream.c <i>(Makefile source module name: LUFA_SRC_SERIALSTREAM)</i>
+ *
+ * \section Module Description
+ * Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
+ * regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
+ * puts, etc.) to work with the
+ * USART.
+ *
+ * @{
+ */
+
+#ifndef __SERIAL_STREAM_H__
+#define __SERIAL_STREAM_H__
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <stdio.h>
+
+ #include "Serial.h"
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* External Variables: */
+ extern FILE USARTStream;
+
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_SERIALSTREAM_C)
+ static int SerialStream_TxByte(char DataByte,
+ FILE *Stream) ATTR_NON_NULL_PTR_ARG(2);
+ static int SerialStream_RxByte(FILE *Stream) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Inline Functions: */
+ /** Initialises the serial stream (and regular USART driver) so that both the stream and regular
+ * USART driver functions can be used. Must be called before any stream or regular USART functions.
+ *
+ * \param[in] BaudRate Baud rate to configure the USART to.
+ * \param[in] DoubleSpeed Enables double speed mode when set, halving the sample time to double the baud rate.
+ */
+ static inline void SerialStream_Init(const uint32_t BaudRate,
+ const bool DoubleSpeed)
+ {
+ Serial_Init(BaudRate, DoubleSpeed);
+
+ stdout = &USARTStream;
+ stdin = &USARTStream;
+ }
+
+ /** Turns off the serial stream (and regular USART driver), disabling and returning used hardware to
+ * their default configuration.
+ */
+ static inline void SerialStream_ShutDown(void)
+ {
+ Serial_ShutDown();
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
diff --git a/LUFA/Drivers/Peripheral/TWI.c b/LUFA/Drivers/Peripheral/TWI.c new file mode 100644 index 0000000..4694b0b --- /dev/null +++ b/LUFA/Drivers/Peripheral/TWI.c @@ -0,0 +1,75 @@ +/*
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+#include "TWI.h"
+
+bool TWI_StartTransmission(const uint8_t SlaveAddress,
+ const uint8_t TimeoutMS)
+{
+ for (;;)
+ {
+ bool BusCaptured = false;
+ uint16_t TimeoutRemaining;
+
+ TWCR = ((1 << TWINT) | (1 << TWSTA) | (1 << TWEN));
+
+ TimeoutRemaining = (TimeoutMS * 100);
+ while (TimeoutRemaining-- && !(BusCaptured))
+ {
+ if (TWCR & (1 << TWINT))
+ {
+ switch (TWSR & TW_STATUS_MASK)
+ {
+ case TW_START:
+ case TW_REP_START:
+ BusCaptured = true;
+ break;
+ case TW_MT_ARB_LOST:
+ TWCR = ((1 << TWINT) | (1 << TWSTA) | (1 << TWEN));
+ continue;
+ default:
+ TWCR = (1 << TWEN);
+ return false;
+ }
+ }
+
+ _delay_us(10);
+ }
+
+ if (!(BusCaptured))
+ {
+ TWCR = (1 << TWEN);
+ return false;
+ }
+
+ TWDR = SlaveAddress;
+ TWCR = ((1 << TWINT) | (1 << TWEN));
+
+ TimeoutRemaining = (TimeoutMS * 100);
+ while (TimeoutRemaining--)
+ {
+ if (TWCR & (1 << TWINT))
+ break;
+
+ _delay_us(10);
+ }
+
+ if (!(TimeoutRemaining))
+ return false;
+
+ switch (TWSR & TW_STATUS_MASK)
+ {
+ case TW_MT_SLA_ACK:
+ case TW_MR_SLA_ACK:
+ return true;
+ default:
+ TWCR = ((1 << TWINT) | (1 << TWSTO) | (1 << TWEN));
+ return false;
+ }
+ }
+}
+
diff --git a/LUFA/Drivers/Peripheral/TWI.h b/LUFA/Drivers/Peripheral/TWI.h new file mode 100644 index 0000000..ae918c3 --- /dev/null +++ b/LUFA/Drivers/Peripheral/TWI.h @@ -0,0 +1,72 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Master include file for the TWI peripheral driver.
+ *
+ * This file is the master dispatch header file for the device-specific ADC driver, for AVRs containing an ADC.
+ *
+ * User code should include this file, which will in turn include the correct ADC driver header file for the
+ * currently selected AVR model.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ * @defgroup Group_TWI TWI Driver - LUFA/Drivers/Peripheral/TWI.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - LUFA/Drivers/Peripheral/TWI.c <i>(Makefile source module name: LUFA_SRC_TWI)</i>
+ *
+ *
+ * \section Module Description
+ * Master Mode Hardware TWI driver. This module provides an easy to use driver for the hardware
+ * TWI present on many AVR models, for the transmission and reception of data on a TWI bus.
+ */
+
+#ifndef __TWI_H__
+#define __TWI_H__
+
+ /* Macros: */
+ #if !defined(__DOXYGEN__)
+ #define __INCLUDE_FROM_TWI_H
+ #endif
+
+ /* Includes: */
+ #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || \
+ defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || \
+ defined(__AVR_ATmega32U6__))
+ #include "AVRU4U6U7/TWI.h"
+ #else
+ #error "TWI is not available for the currently selected AVR model."
+ #endif
+
+#endif
+
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