diff options
author | Dean Camera <dean@fourwalledcubicle.com> | 2010-02-24 06:58:23 +0000 |
---|---|---|
committer | Dean Camera <dean@fourwalledcubicle.com> | 2010-02-24 06:58:23 +0000 |
commit | 071fd8ce536522ca6365580d64cd465e4c18a031 (patch) | |
tree | 604c4881c36b11f37d0203f9466d6078080847b7 /LUFA/Drivers/Peripheral/AVRU4U6U7 | |
parent | a7aaa45ec4c3f415bf6073a5cc016635d5ecf77d (diff) | |
download | lufa-071fd8ce536522ca6365580d64cd465e4c18a031.tar.gz lufa-071fd8ce536522ca6365580d64cd465e4c18a031.tar.bz2 lufa-071fd8ce536522ca6365580d64cd465e4c18a031.zip |
Revert changes made for the partial port to the AVR32 architecture.
Diffstat (limited to 'LUFA/Drivers/Peripheral/AVRU4U6U7')
-rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h | 322 | ||||
-rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/SPI.h | 189 | ||||
-rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/Serial.h | 145 | ||||
-rw-r--r-- | LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h | 146 |
4 files changed, 802 insertions, 0 deletions
diff --git a/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h new file mode 100644 index 000000000..8b1b47df2 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h @@ -0,0 +1,322 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ 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
+ *
+ * ADC 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 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
+ *
+ * ADC 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 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: */
+ /** 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))
+
+ /** 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)
+
+ /** 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)
+
+ /** 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))
+
+ //@{
+ /** MUX mask define for the ADC0 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL0 0x00
+
+ /** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL1 0x01
+
+ #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 Note available on all AVR models.
+ */
+ #define ADC_CHANNEL2 0x02
+
+ /** MUX mask define for the ADC3 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL3 0x03
+ #endif
+
+ /** MUX mask define for the ADC4 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL4 0x04
+
+ /** MUX mask define for the ADC5 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL5 0x05
+
+ /** MUX mask define for the ADC6 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL6 0x06
+
+ /** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
+ #define ADC_CHANNEL7 0x07
+
+ /** 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
+
+ #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 Note available on all AVR models.
+ */
+ #define ADC_CHANNEL8 0x20
+
+ /** MUX mask define for the ADC9 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL9 0x21
+
+ /** MUX mask define for the ADC10 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL10 0x22
+
+ /** MUX mask define for the ADC11 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL11 0x23
+
+ /** MUX mask define for the ADC12 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL12 0x24
+
+ /** MUX mask define for the ADC13 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_CHANNEL13 0x25
+
+ /** MUX mask define for the internal temperature sensor channel of the ADC. See \ref ADC_StartReading and
+ * \ref ADC_GetChannelReading.
+ *
+ * \note Note available on all AVR models.
+ */
+ #define ADC_INT_TEMP_SENS 0x27
+ #endif
+ //@}
+
+ /* Pseudo-Function Macros: */
+ #if defined(__DOXYGEN__)
+ /** Initializes 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 settings, including adjustment, prescale, mode and reference
+ */
+ static inline void ADC_Init(uint8_t 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);
+
+ /** 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);
+
+ /** 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);
+
+ /** Retrieves the conversion value of the last completed ADC conversion.
+ *
+ * \return The result of the last ADC conversion
+ */
+ static inline uint16_t ADC_GetResult(void);
+ #else
+ #define ADC_Init(mode) MACROS{ ADCSRA = ((1 << ADEN) | mode); }MACROE
+
+ #define ADC_ShutDown() MACROS{ ADCSRA = 0; }MACROE
+
+ #define ADC_GetStatus() ((ADCSRA & (1 << ADEN)) ? true : false)
+
+ #define ADC_IsReadingComplete() (ADCSRA & (1 << ADSC))
+
+ #define ADC_GetResult() ADC
+ #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.
+ *
+ * \note The channel number must be specified as an integer, and NOT a ADC_CHANNELx mask.
+ *
+ * \param[in] Channel ADC channel number to set up for conversions
+ */
+ static inline void ADC_SetupChannel(const uint8_t Channel)
+ {
+ #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || \
+ defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_ATmega32U6__))
+ DDRF &= ~(1 << Channel);
+ DIDR0 |= (1 << Channel);
+ #elif (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__))
+ if (Channel < 8)
+ {
+ DDRF &= ~(1 << Channel);
+ DIDR0 |= (1 << Channel);
+ }
+ else if (Channel == 8)
+ {
+ DDRD &= ~(1 << 4);
+ DIDR2 |= (1 << 0);
+ }
+ else if (Channel < 11)
+ {
+ DDRD &= ~(1 << (Channel - 3));
+ DIDR2 |= (1 << (Channel - 8));
+ }
+ else
+ {
+ DDRB &= ~(1 << (Channel - 7));
+ DIDR2 |= (1 << (Channel - 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.
+ *
+ * \param[in] MUXMask Mask comprising of an ADC channel mask, reference mask and adjustment mask
+ */
+ static inline void ADC_StartReading(const uint8_t MUXMask)
+ {
+ ADMUX = MUXMask;
+
+ ADCSRA |= (1 << ADSC);
+ }
+
+ /** 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.
+ *
+ * \param[in] MUXMask Mask comprising of an ADC channel mask, reference mask and adjustment mask
+ */
+ static inline uint16_t ADC_GetChannelReading(const uint8_t MUXMask) ATTR_WARN_UNUSED_RESULT;
+ static inline uint16_t ADC_GetChannelReading(const uint8_t MUXMask)
+ {
+ ADC_StartReading(MUXMask);
+
+ while (!(ADC_IsReadingComplete()));
+
+ return ADC_GetResult();
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
diff --git a/LUFA/Drivers/Peripheral/AVRU4U6U7/SPI.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/SPI.h new file mode 100644 index 000000000..3440cc9f1 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/SPI.h @@ -0,0 +1,189 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ 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
+ *
+ * SPI driver for the 8-bit AVRs.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the SPI driver
+ * dispatch header located in LUFA/Drivers/Peripheral/SPI.h.
+ */
+
+/** \ingroup Group_SPI
+ * @defgroup Group_SPI_AVR8 8-Bit AVR SPI Driver
+ *
+ * SPI driver for the 8-bit AVRs.
+ *
+ * \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/SPI.h.
+ *
+ * @{
+ */
+
+#ifndef __SPI_AVR8_H__
+#define __SPI_AVR8_H__
+
+ /* Includes: */
+ #include <stdbool.h>
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_SPI_H)
+ #error Do not include this file directly. Include LUFA/Drivers/Peripheral/SPI.h instead.
+ #endif
+
+ /* 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: */
+ /** 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))
+
+ /** 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)
+
+ /** 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)
+
+ /** 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_* and SPI_MODE_* masks
+ */
+ static inline void SPI_Init(const uint8_t SPIOptions)
+ {
+ DDRB |= ((1 << 1) | (1 << 2));
+ 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/AVRU4U6U7/Serial.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/Serial.h new file mode 100644 index 000000000..0421dea73 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/Serial.h @@ -0,0 +1,145 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ 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
+ *
+ * ADC driver for the 8-bit AVRs.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the USART driver
+ * dispatch header located in LUFA/Drivers/Peripheral/Serial.h.
+ */
+
+/** \ingroup Group_Serial
+ * @defgroup Group_Serial_AVR8 8-Bit AVR Serial Driver
+ *
+ * Serial driver for the 8-bit AVRs.
+ *
+ * \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/USART.h.
+ *
+ * @{
+ */
+
+#ifndef __SERIAL_AVR8_H__
+#define __SERIAL_AVR8_H__
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <avr/pgmspace.h>
+ #include <stdbool.h>
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_SERIAL_H)
+ #error Do not include this file directly. Include LUFA/Drivers/Peripheral/Serial.h instead.
+ #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)
+
+ /* Pseudo-Function Macros: */
+ #if defined(__DOXYGEN__)
+ /** 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);
+ #else
+ #define Serial_IsCharReceived() ((UCSR1A & (1 << RXC1)) ? true : false)
+ #endif
+
+ /* 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)
+ {
+ UCSR1A = (DoubleSpeed ? (1 << U2X1) : 0);
+ UCSR1B = ((1 << TXEN1) | (1 << RXEN1));
+ UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10));
+
+ DDRD |= (1 << 3);
+ PORTD |= (1 << 2);
+
+ UBRR1 = (DoubleSpeed ? SERIAL_2X_UBBRVAL(BaudRate) : SERIAL_UBBRVAL(BaudRate));
+ }
+
+ /** Turns off the USART driver, disabling and returning used hardware to their default configuration. */
+ static inline void Serial_ShutDown(void)
+ {
+ UCSR1A = 0;
+ UCSR1B = 0;
+ UCSR1C = 0;
+
+ DDRD &= ~(1 << 3);
+ PORTD &= ~(1 << 2);
+
+ UBRR1 = 0;
+ }
+
+ /** Transmits a given byte through the USART.
+ *
+ * \param[in] DataByte Byte to transmit through the USART
+ */
+ static inline void Serial_TxByte(const char DataByte)
+ {
+ while (!(UCSR1A & (1 << UDRE1)));
+ UDR1 = DataByte;
+ }
+
+ /** Receives a byte from the USART.
+ *
+ * \return Byte received from the USART
+ */
+ static inline uint8_t 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/AVRU4U6U7/TWI.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h new file mode 100644 index 000000000..13db86e69 --- /dev/null +++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/TWI.h @@ -0,0 +1,146 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ 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
+ *
+ * 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>
+
+ /* 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: */
+ /* Pseudo-Function Macros: */
+ #if defined(__DOXYGEN__)
+ /** Initializes 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);
+
+ /** 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);
+ #else
+ #define TWI_Init() MACROS{ TWCR |= (1 << TWEN); }MACROE
+ #define TWI_ShutDown() MACROS{ TWCR &= ~(1 << TWEN); }MACROE
+ #endif
+
+ /* Inline Functions: */
+ /** Sends a TWI STOP onto the TWI bus, terminating communication with the currently addressed device. */
+ 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(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 sucessfully completed, false otherwise
+ */
+ static inline bool TWI_ReceiveByte(uint8_t* Byte, 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
+ *
+ * \return Boolean true if the device is ready for data, false otherwise
+ */
+ bool TWI_StartTransmission(uint8_t SlaveAddress);
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
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