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Fixed broken AVR8 USART-SPI peripheral driver (thanks to Phil Zakielarz).

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This commit is contained in:
Dean Camera 2014-09-13 16:29:29 +10:00
parent 025e57bd72
commit 6c8ebd70c7
3 changed files with 26 additions and 17 deletions
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28
LUFA/Drivers/Peripheral/AVR8/SerialSPI_AVR8.h
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@ -52,7 +52,7 @@
*
* \code
* // Initialize the Master SPI mode USART driver before first use, with 1Mbit baud
* SerialSPI_Init((USART_SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_ORDER_MSB_FIRST), 1000000);
* SerialSPI_Init((USART_SPI_SCK_LEAD_RISING | USART_SPI_SAMPLE_LEADING | USART_SPI_ORDER_MSB_FIRST), 1000000);
*
* // Send several bytes, ignoring the returned data
* SerialSPI_SendByte(0x01);
@ -90,37 +90,45 @@
#endif
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
#define SERIAL_SPI_UBBRVAL(Baud) ((Baud < (F_CPU / 2)) ? ((F_CPU / (2 * Baud)) - 1) : 0)
#endif
#if !defined(__DOXYGEN__)
#define SERIAL_SPI_UBBRVAL(Baud) ((Baud < (F_CPU / 2)) ? ((F_CPU / (2 * Baud)) - 1) : 0)
/* Master USART SPI mode flag definitions missing in the AVR8 toolchain */
#if !defined(UCPHA1)
#define UCPHA1 1
#endif
#if !defined(UDORD1)
#define UDORD1 2
#endif
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name SPI SCK Polarity Configuration Masks */
//@{
/** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the rising edge. */
#define USART_SPI_SCK_LEAD_RISING (0 << UCPOL)
#define USART_SPI_SCK_LEAD_RISING (0 << UCPOL1)
/** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the falling edge. */
#define USART_SPI_SCK_LEAD_FALLING (1 << UCPOL)
#define USART_SPI_SCK_LEAD_FALLING (1 << UCPOL1)
//@}
/** \name SPI Sample Edge Configuration Masks */
//@{
/** SPI data sample mode mask for \ref SerialSPI_Init(). Indicates that the data should sampled on the leading edge. */
#define USART_SPI_SAMPLE_LEADING (0 << UPCHA)
#define USART_SPI_SAMPLE_LEADING (0 << UCPHA1)
/** SPI data sample mode mask for \ref SerialSPI_Init(). Indicates that the data should be sampled on the trailing edge. */
#define USART_SPI_SAMPLE_TRAILING (1 << UPCHA)
#define USART_SPI_SAMPLE_TRAILING (1 << UCPHA1)
//@}
/** \name SPI Data Ordering Configuration Masks */
//@{
/** SPI data order mask for \ref SerialSPI_Init(). Indicates that data should be shifted out MSB first. */
#define USART_SPI_ORDER_MSB_FIRST (0 << UDORD)
#define USART_SPI_ORDER_MSB_FIRST (0 << UDORD1)
/** SPI data order mask for \ref SerialSPI_Init(). Indicates that data should be shifted out LSB first. */
#define USART_SPI_ORDER_LSB_FIRST (1 << UDORD)
#define USART_SPI_ORDER_LSB_FIRST (1 << UDORD1)
//@}
/* Inline Functions: */