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More AVR32 achitecture ports.

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This commit is contained in:
Dean Camera
2010-02-24 06:21:46 +00:00
parent 3702ba1fb3
commit a7aaa45ec4
11 changed files with 113 additions and 75 deletions
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31
LUFA/Drivers/Peripheral/AVR32/SPI.h
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@@ -72,6 +72,12 @@
/** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 32. */
#define SPI_SPEED_FCPU_DIV_32 AVR32_SPI_MR_FDIV_MASK
/** SPI chip selection mode for direct peripheral-to-CS pin connections. */
#define SPI_CS_4BITDECODER AVR32_SPI_MR_PSDEC_MASK
/** SPI chip selection mode for peripheral CS pin connections through a 4-bit decoder. */
#define SPI_CS_DIRECT 0
/** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into slave mode. */
#define SPI_MODE_SLAVE 0
@@ -89,12 +95,15 @@
* configure these seperately to connect the SPI module to the desired GPIO pins via the
* GPIO MUX registers.
*
* \param[in] SPIOptions SPI Options, a mask consisting of one of each of the SPI_SPEED_*
* and SPI_MODE_* masks
* \param[in] SPIOptions SPI Options, a mask consisting of one of each of the SPI_SPEED_*,
* SPI_CS_* and SPI_MODE_* masks
*/
static inline void SPI_Init(const uintN_t SPIOptions)
{
AVR32_SPI.cr = (AVR32_SPI_CR_SPIEN_MASK | AVR32_SPI_CR_SWRST_MASK);
AVR32_PM.pbamask = (1 << 5);
AVR32_SPI.CR.swrst = true;
AVR32_SPI.CR.spien = true;
AVR32_SPI.mr = SPIOptions;
}
@@ -102,6 +111,8 @@
static inline void SPI_ShutDown(void)
{
AVR32_SPI.cr = AVR32_SPI_CR_SPIDIS_MASK;
AVR32_PM.pbamask &= ~(1 << 5);
}
/** Sends and receives a transfer through the SPI interface, blocking until the transfer is complete.
@@ -115,9 +126,12 @@
static inline uint16_t SPI_Transfer(const uint16_t Data) ATTR_ALWAYS_INLINE;
static inline uint16_t SPI_Transfer(const uint16_t Data)
{
AVR32_SPI.TDR.td = Data;
while (!(AVR32_SPI.SR.tdre));
return AVR32_SPI.rdr;
AVR32_SPI.TDR.td = Data;
while ((AVR32_SPI.sr & (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) !=
(AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK));
return AVR32_SPI.RDR.rd;
}
/** Sends a transfer through the SPI interface, blocking until the transfer is complete. The response
@@ -129,8 +143,8 @@
static inline void SPI_Send(const uint16_t Data) ATTR_ALWAYS_INLINE;
static inline void SPI_Send(const uint16_t Data)
{
AVR32_SPI.TDR.td = Data;
while (!(AVR32_SPI.SR.tdre));
AVR32_SPI.TDR.td = Data;
}
/** Sends a dummy transfer through the SPI interface, blocking until the transfer is complete. The response
@@ -142,8 +156,11 @@
static inline uint16_t SPI_Receive(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
static inline uint16_t SPI_Receive(void)
{
AVR32_SPI.TDR.td = 0x0000;
while (!(AVR32_SPI.SR.tdre));
AVR32_SPI.TDR.td = 0x0000;
while ((AVR32_SPI.sr & (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) !=
(AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK));
return AVR32_SPI.RDR.rd;
}