diff options
Diffstat (limited to 'os/hal/include/i2c.h')
| -rw-r--r-- | os/hal/include/i2c.h | 37 |
1 files changed, 26 insertions, 11 deletions
diff --git a/os/hal/include/i2c.h b/os/hal/include/i2c.h index a01606a18..203de769c 100644 --- a/os/hal/include/i2c.h +++ b/os/hal/include/i2c.h @@ -33,7 +33,24 @@ /*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
-
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+#define I2CD_NO_ERROR 0
+/** @brief Bus Error.*/
+#define I2CD_BUS_ERROR 0x01
+/** @brief Arbitration Lost (master mode).*/
+#define I2CD_ARBITRATION_LOST 0x02
+/** @brief Acknowledge Failure.*/
+#define I2CD_ACK_FAILURE 0x04
+/** @brief Overrun/Underrun.*/
+#define I2CD_OVERRUN 0x08
+/** @brief PEC Error in reception.*/
+#define I2CD_PEC_ERROR 0x10
+/** @brief Timeout or Tlow Error.*/
+#define I2CD_TIMEOUT 0x20
+/** @brief SMBus Alert.*/
+#define I2CD_SMB_ALERT 0x40
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
@@ -48,6 +65,9 @@ /*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
+#if I2C_USE_MUTUAL_EXCLUSION && !CH_USE_MUTEXES && !CH_USE_SEMAPHORES
+#error "I2C_USE_MUTUAL_EXCLUSION requires CH_USE_MUTEXES and/or CH_USE_SEMAPHORES"
+#endif
/*===========================================================================*/
/* Driver data structures and types. */
@@ -57,16 +77,11 @@ * @brief Driver state machine possible states.
*/
typedef enum {
- I2C_UNINIT = 0, /**< Not initialized. */
- I2C_STOP = 1, /**< Stopped. */
- I2C_READY = 2, /**< Ready. Start condition generated. */
- I2C_MACTIVE = 3, /**< I2C configured and waiting start cond. */
- I2C_10BIT_HANDSHAKE = 4, /**< 10-bit address sending */
- I2C_MWAIT_ADDR_ACK = 5, /**< Waiting ACK on address sending. */
- I2C_MTRANSMIT = 6, /**< Master transmitting. */
- I2C_MRECEIVE = 7, /**< Master receiving. */
- I2C_MWAIT_TF = 8, /**< Master wait Transmission Finished */
- I2C_MERROR = 9, /**< Error condition. */
+ I2C_UNINIT = 0, /**< @brief Not initialized. */
+ I2C_STOP = 1, /**< @brief Stopped. */
+ I2C_READY = 2, /**< @brief Ready. */
+ I2C_ACTIVE = 3, /**< @brief In communication. */
+ I2C_COMPLETE = 4, /**< @brief Asynchronous operation complete. */
// slave part
I2C_SACTIVE = 10,
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