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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-10-17 09:13:43 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-10-17 09:13:43 +0000 |
| commit | a7af0ac06b5cafe7dfadf3e292e3107a8e45ff21 (patch) | |
| tree | ff4a9c519ff1f219d0125222a79187be2303a091 /os/hal/platforms/LPC214x/spi_lld.h | |
| parent | 3b5571076e95a4cab3f09f1c6ad0905e454c00e5 (diff) | |
| download | ChibiOS-a7af0ac06b5cafe7dfadf3e292e3107a8e45ff21.tar.gz ChibiOS-a7af0ac06b5cafe7dfadf3e292e3107a8e45ff21.tar.bz2 ChibiOS-a7af0ac06b5cafe7dfadf3e292e3107a8e45ff21.zip | |
New LPC214x SPI device driver.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2264 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/LPC214x/spi_lld.h')
| -rw-r--r-- | os/hal/platforms/LPC214x/spi_lld.h | 94 |
1 files changed, 84 insertions, 10 deletions
diff --git a/os/hal/platforms/LPC214x/spi_lld.h b/os/hal/platforms/LPC214x/spi_lld.h index d3d271cf0..57d02d4de 100644 --- a/os/hal/platforms/LPC214x/spi_lld.h +++ b/os/hal/platforms/LPC214x/spi_lld.h @@ -34,32 +34,77 @@ /* Driver constants. */
/*===========================================================================*/
+/**
+ * @brief Hardware FIFO depth. + */
+#define LPC214x_SSP_FIFO_DEPTH 8
+
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
- * @brief SPI1 (SSP) driver enable switch.
- * @details If set to @p TRUE the support for SPI0 is included.
+ * @brief SPI1 driver enable switch.
+ * @details If set to @p TRUE the support for SSP is included.
* @note The default is @p TRUE.
*/
-#if !defined(USE_LPC214x_SPI1) || defined(__DOXYGEN__)
-#define USE_LPC214x_SPI1 TRUE
+#if !defined(LPC214x_SPI_USE_SSP) || defined(__DOXYGEN__)
+#define LPC214x_SPI_USE_SSP TRUE
+#endif
+
+/**
+ * @brief SSP interrupt priority level setting.
+ */
+#if !defined(STM32_SPI_SPI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC214x_SPI_SSP_IRQ_PRIORITY 4
+#endif
+
+/**
+ * @brief Overflow error hook.
+ * @details The default action is to stop the system.
+ */
+#if !defined(LPC214x_SPI_SSP_ERROR_HOOK) || defined(__DOXYGEN__)
+#define LPC214x_SPI_SSP_ERROR_HOOK() chSysHalt()
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
+#if !LPC214x_SPI_USE_SSP
+#error "SPI driver activated but no SPI peripheral assigned"
+#endif
+
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
+ * @brief Type of a structure representing an SPI driver.
+ */
+typedef struct SPIDriver SPIDriver;
+
+/**
+ * @brief SPI notification callback type.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object triggering the
+ * callback
+ */
+typedef void (*spicallback_t)(SPIDriver *spip);
+
+/**
* @brief Driver configuration structure.
*/
typedef struct {
/**
+ * @brief Operation complete callback or @p NULL.
+ * @note In order to use synchronous functions this field must be set to
+ * @p NULL, callbacks and synchronous operations are mutually
+ * exclusive.
+ */
+ spicallback_t spc_endcb;
+ /* End of the mandatory fields.*/
+ /**
* @brief The chip select line port.
*/
ioportid_t spc_ssport;
@@ -84,11 +129,21 @@ typedef struct { /**
* @brief Structure representing a SPI driver.
*/
-typedef struct {
+struct SPIDriver {
/**
* @brief Driver state.
*/
spistate_t spd_state;
+ /**
+ * @brief Current configuration data.
+ */
+ const SPIConfig *spd_config;
+#if SPI_USE_WAIT || defined(__DOXYGEN__)
+ /**
+ * @brief Waiting thread.
+ */
+ Thread *spd_thread;
+#endif /* SPI_USE_WAIT */
#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
#if CH_USE_MUTEXES || defined(__DOXYGEN__)
/**
@@ -99,12 +154,31 @@ typedef struct { Semaphore spd_semaphore;
#endif
#endif /* SPI_USE_MUTUAL_EXCLUSION */
+#if defined(SPI_DRIVER_EXT_FIELDS)
+ SPI_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields.*/
/**
- * @brief Current configuration data.
+ * @brief Pointer to the SSP registers block.
*/
- const SPIConfig *spd_config;
- /* End of the mandatory fields.*/
-} SPIDriver;
+ SSP *spd_ssp;
+ /**
+ * @brief Number of bytes yet to be received. + */
+ uint32_t spd_rxcnt;
+ /**
+ * @brief Receive pointer or @p NULL.
+ */
+ void *spd_rxptr;
+ /**
+ * @brief Number of bytes yet to be transmitted.
+ */
+ uint32_t spd_txcnt;
+ /**
+ * @brief Transmit pointer or @p NULL.
+ */
+ const void *spd_txptr;
+};
/*===========================================================================*/
/* Driver macros. */
@@ -114,7 +188,7 @@ typedef struct { /* External declarations. */
/*===========================================================================*/
-#if USE_LPC214x_SPI1 && !defined(__DOXYGEN__)
+#if LPC214x_SPI_USE_SSP && !defined(__DOXYGEN__)
extern SPIDriver SPID1;
#endif
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