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Add some missing function attributes.

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This commit is contained in:
Dean Camera 2013-04-11 17:39:00 +00:00
parent d5e84db5ab
commit 334f70aa80
12 changed files with 74 additions and 52 deletions
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29
LUFA/Drivers/Peripheral/XMEGA/SerialSPI_XMEGA.h
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@ -53,17 +53,17 @@
* \code
* // Initialize the Master SPI mode USART driver before first use, with 1Mbit baud
* SerialSPI_Init(&USARTD0, (USART_SPI_SCK_LEAD_RISING | USART_SPI_SAMPLE_LEADING | USART_SPI_ORDER_MSB_FIRST), 1000000);
*
*
* // Send several bytes, ignoring the returned data
* SerialSPI_SendByte(&USARTD0, 0x01);
* SerialSPI_SendByte(&USARTD0, 0x02);
* SerialSPI_SendByte(&USARTD0, 0x03);
*
*
* // Receive several bytes, sending a dummy 0x00 byte each time
* uint8_t Byte1 = SerialSPI_ReceiveByte(&USARTD);
* uint8_t Byte2 = SerialSPI_ReceiveByte(&USARTD);
* uint8_t Byte3 = SerialSPI_ReceiveByte(&USARTD);
*
*
* // Send a byte, and store the received byte from the same transaction
* uint8_t ResponseByte = SerialSPI_TransferByte(&USARTD0, 0xDC);
* \endcode
@ -118,40 +118,44 @@
/** SPI data order mask for \ref SerialSPI_Init(). Indicates that data should be shifted out LSB first. */
#define USART_SPI_ORDER_LSB_FIRST USART_UDORD_bm
//@}
//@}
/* Inline Functions: */
/** Initialize the USART module in Master SPI mode.
/** Initialize the USART module in Master SPI mode.
*
* \param[in,out] USART Pointer to the base of the USART peripheral within the device.
* \param[in] SPIOptions USART SPI Options, a mask consisting of one of each of the \c USART_SPI_SCK_*,
* \c USART_SPI_SAMPLE_* and \c USART_SPI_ORDER_* masks.
* \param[in] BaudRate SPI baud rate, in bits per second.
*/
static inline void SerialSPI_Init(USART_t* const USART,
const uint8_t SPIOptions,
const uint32_t BaudRate) ATTR_NON_NULL_PTR_ARG(1);
static inline void SerialSPI_Init(USART_t* const USART,
const uint8_t SPIOptions,
const uint32_t BaudRate)
{
uint16_t BaudValue = SERIAL_SPI_UBBRVAL(BaudRate);
USART->BAUDCTRLB = (BaudValue >> 8);
USART->BAUDCTRLA = (BaudValue & 0xFF);
USART->CTRLC = (USART_CMODE_MSPI_gc | SPIOptions);
USART->CTRLB = (USART_RXEN_bm | USART_TXEN_bm);
}
/** Turns off the USART driver, disabling and returning used hardware to their default configuration.
*
* \param[in,out] USART Pointer to the base of the USART peripheral within the device.
*/
static inline void SerialSPI_Disable(USART_t* const USART) ATTR_ALWAYS_INLINE ATTR_NON_NULL_PTR_ARG(1);
static inline void SerialSPI_Disable(USART_t* const USART)
{
USART->CTRLA = 0;
USART->CTRLB = 0;
USART->CTRLC = 0;
}
/** Sends and receives a byte through the USART SPI interface, blocking until the transfer is complete.
*
* \param[in,out] USART Pointer to the base of the USART peripheral within the device.
@ -159,6 +163,8 @@
*
* \return Response byte from the attached SPI device.
*/
static inline uint8_t SerialSPI_TransferByte(USART_t* const USART,
const uint8_t DataByte) ATTR_ALWAYS_INLINE ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t SerialSPI_TransferByte(USART_t* const USART,
const uint8_t DataByte)
{
@ -174,6 +180,8 @@
* \param[in,out] USART Pointer to the base of the USART peripheral within the device.
* \param[in] DataByte Byte to send through the USART SPI interface.
*/
static inline void SerialSPI_SendByte(USART_t* const USART,
const uint8_t DataByte) ATTR_ALWAYS_INLINE ATTR_NON_NULL_PTR_ARG(1)
static inline void SerialSPI_SendByte(USART_t* const USART,
const uint8_t DataByte)
{
@ -187,11 +195,12 @@
*
* \return The response byte from the attached SPI device.
*/
static inline uint8_t SerialSPI_ReceiveByte(USART_t* const USART) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
static inline uint8_t SerialSPI_ReceiveByte(USART_t* const USART)
{
return SerialSPI_TransferByte(USART, 0);
}
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}