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MarlinFirmware/frameworks/CMSIS/LPC1768/include/lpc17xx_i2c.h

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/**********************************************************************
* $Id$ lpc17xx_i2c.h 2010-05-21
*//**
* @file lpc17xx_i2c.h
* @brief Contains all macro definitions and function prototypes
* support for I2C firmware library on LPC17xx
* @version 2.0
* @date 21. May. 2010
* @author NXP MCU SW Application Team
*
* Copyright(C) 2010, NXP Semiconductor
* All rights reserved.
*
***********************************************************************
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* products. This software is supplied "AS IS" without any warranties.
* NXP Semiconductors assumes no responsibility or liability for the
* use of the software, conveys no license or title under any patent,
* copyright, or mask work right to the product. NXP Semiconductors
* reserves the right to make changes in the software without
* notification. NXP Semiconductors also make no representation or
* warranty that such application will be suitable for the specified
* use without further testing or modification.
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, under NXP Semiconductors'
* relevant copyright in the software, without fee, provided that it
* is used in conjunction with NXP Semiconductors microcontrollers. This
* copyright, permission, and disclaimer notice must appear in all copies of
* this code.
**********************************************************************/
/* Peripheral group ----------------------------------------------------------- */
/** @defgroup I2C I2C (Inter-IC Control bus)
* @ingroup LPC1700CMSIS_FwLib_Drivers
* @{
*/
#ifndef LPC17XX_I2C_H_
#define LPC17XX_I2C_H_
/* Includes ------------------------------------------------------------------- */
#include "LPC17xx.h"
#include "lpc_types.h"
#ifdef __cplusplus
extern "C"
{
#endif
/* Private Macros ------------------------------------------------------------- */
/** @defgroup I2C_Private_Macros I2C Private Macros
* @{
*/
/* --------------------- BIT DEFINITIONS -------------------------------------- */
/*******************************************************************//**
* I2C Control Set register description
*********************************************************************/
#define I2C_I2CONSET_AA ((0x04)) /*!< Assert acknowledge flag */
#define I2C_I2CONSET_SI ((0x08)) /*!< I2C interrupt flag */
#define I2C_I2CONSET_STO ((0x10)) /*!< STOP flag */
#define I2C_I2CONSET_STA ((0x20)) /*!< START flag */
#define I2C_I2CONSET_I2EN ((0x40)) /*!< I2C interface enable */
/*******************************************************************//**
* I2C Control Clear register description
*********************************************************************/
/** Assert acknowledge Clear bit */
#define I2C_I2CONCLR_AAC ((1<<2))
/** I2C interrupt Clear bit */
#define I2C_I2CONCLR_SIC ((1<<3))
/** I2C STOP Clear bit */
#define I2C_I2CONCLR_STOC ((1<<4))
/** START flag Clear bit */
#define I2C_I2CONCLR_STAC ((1<<5))
/** I2C interface Disable bit */
#define I2C_I2CONCLR_I2ENC ((1<<6))
/********************************************************************//**
* I2C Status Code definition (I2C Status register)
*********************************************************************/
/* Return Code in I2C status register */
#define I2C_STAT_CODE_BITMASK ((0xF8))
/* I2C return status code definitions ----------------------------- */
/** No relevant information */
#define I2C_I2STAT_NO_INF ((0xF8))
/** Bus Error */
#define I2C_I2STAT_BUS_ERROR ((0x00))
/* Master transmit mode -------------------------------------------- */
/** A start condition has been transmitted */
#define I2C_I2STAT_M_TX_START ((0x08))
/** A repeat start condition has been transmitted */
#define I2C_I2STAT_M_TX_RESTART ((0x10))
/** SLA+W has been transmitted, ACK has been received */
#define I2C_I2STAT_M_TX_SLAW_ACK ((0x18))
/** SLA+W has been transmitted, NACK has been received */
#define I2C_I2STAT_M_TX_SLAW_NACK ((0x20))
/** Data has been transmitted, ACK has been received */
#define I2C_I2STAT_M_TX_DAT_ACK ((0x28))
/** Data has been transmitted, NACK has been received */
#define I2C_I2STAT_M_TX_DAT_NACK ((0x30))
/** Arbitration lost in SLA+R/W or Data bytes */
#define I2C_I2STAT_M_TX_ARB_LOST ((0x38))
/* Master receive mode -------------------------------------------- */
/** A start condition has been transmitted */
#define I2C_I2STAT_M_RX_START ((0x08))
/** A repeat start condition has been transmitted */
#define I2C_I2STAT_M_RX_RESTART ((0x10))
/** Arbitration lost */
#define I2C_I2STAT_M_RX_ARB_LOST ((0x38))
/** SLA+R has been transmitted, ACK has been received */
#define I2C_I2STAT_M_RX_SLAR_ACK ((0x40))
/** SLA+R has been transmitted, NACK has been received */
#define I2C_I2STAT_M_RX_SLAR_NACK ((0x48))
/** Data has been received, ACK has been returned */
#define I2C_I2STAT_M_RX_DAT_ACK ((0x50))
/** Data has been received, NACK has been return */
#define I2C_I2STAT_M_RX_DAT_NACK ((0x58))
/* Slave receive mode -------------------------------------------- */
/** Own slave address has been received, ACK has been returned */
#define I2C_I2STAT_S_RX_SLAW_ACK ((0x60))
/** Arbitration lost in SLA+R/W as master */
#define I2C_I2STAT_S_RX_ARB_LOST_M_SLA ((0x68))
/** General call address has been received, ACK has been returned */
#define I2C_I2STAT_S_RX_GENCALL_ACK ((0x70))
/** Arbitration lost in SLA+R/W (GENERAL CALL) as master */
#define I2C_I2STAT_S_RX_ARB_LOST_M_GENCALL ((0x78))
/** Previously addressed with own SLV address;
* Data has been received, ACK has been return */
#define I2C_I2STAT_S_RX_PRE_SLA_DAT_ACK ((0x80))
/** Previously addressed with own SLA;
* Data has been received and NOT ACK has been return */
#define I2C_I2STAT_S_RX_PRE_SLA_DAT_NACK ((0x88))
/** Previously addressed with General Call;
* Data has been received and ACK has been return */
#define I2C_I2STAT_S_RX_PRE_GENCALL_DAT_ACK ((0x90))
/** Previously addressed with General Call;
* Data has been received and NOT ACK has been return */
#define I2C_I2STAT_S_RX_PRE_GENCALL_DAT_NACK ((0x98))
/** A STOP condition or repeated START condition has
* been received while still addressed as SLV/REC
* (Slave Receive) or SLV/TRX (Slave Transmit) */
#define I2C_I2STAT_S_RX_STA_STO_SLVREC_SLVTRX ((0xA0))
/** Slave transmit mode */
/** Own SLA+R has been received, ACK has been returned */
#define I2C_I2STAT_S_TX_SLAR_ACK ((0xA8))
/** Arbitration lost in SLA+R/W as master */
#define I2C_I2STAT_S_TX_ARB_LOST_M_SLA ((0xB0))
/** Data has been transmitted, ACK has been received */
#define I2C_I2STAT_S_TX_DAT_ACK ((0xB8))
/** Data has been transmitted, NACK has been received */
#define I2C_I2STAT_S_TX_DAT_NACK ((0xC0))
/** Last data byte in I2DAT has been transmitted (AA = 0);
ACK has been received */
#define I2C_I2STAT_S_TX_LAST_DAT_ACK ((0xC8))
/** Time out in case of using I2C slave mode */
#define I2C_SLAVE_TIME_OUT 0x10000UL
/********************************************************************//**
* I2C Data register definition
*********************************************************************/
/** Mask for I2DAT register*/
#define I2C_I2DAT_BITMASK ((0xFF))
/** Idle data value will be send out in slave mode in case of the actual
* expecting data requested from the master is greater than its sending data
* length that can be supported */
#define I2C_I2DAT_IDLE_CHAR (0xFF)
/********************************************************************//**
* I2C Monitor mode control register description
*********************************************************************/
#define I2C_I2MMCTRL_MM_ENA ((1<<0)) /**< Monitor mode enable */
#define I2C_I2MMCTRL_ENA_SCL ((1<<1)) /**< SCL output enable */
#define I2C_I2MMCTRL_MATCH_ALL ((1<<2)) /**< Select interrupt register match */
#define I2C_I2MMCTRL_BITMASK ((0x07)) /**< Mask for I2MMCTRL register */
/********************************************************************//**
* I2C Data buffer register description
*********************************************************************/
/** I2C Data buffer register bit mask */
#define I2DATA_BUFFER_BITMASK ((0xFF))
/********************************************************************//**
* I2C Slave Address registers definition
*********************************************************************/
/** General Call enable bit */
#define I2C_I2ADR_GC ((1<<0))
/** I2C Slave Address registers bit mask */
#define I2C_I2ADR_BITMASK ((0xFF))
/********************************************************************//**
* I2C Mask Register definition
*********************************************************************/
/** I2C Mask Register mask field */
#define I2C_I2MASK_MASK(n) ((n&0xFE))
/********************************************************************//**
* I2C SCL HIGH duty cycle Register definition
*********************************************************************/
/** I2C SCL HIGH duty cycle Register bit mask */
#define I2C_I2SCLH_BITMASK ((0xFFFF))
/********************************************************************//**
* I2C SCL LOW duty cycle Register definition
*********************************************************************/
/** I2C SCL LOW duty cycle Register bit mask */
#define I2C_I2SCLL_BITMASK ((0xFFFF))
/* I2C status values */
#define I2C_SETUP_STATUS_ARBF (1<<8) /**< Arbitration false */
#define I2C_SETUP_STATUS_NOACKF (1<<9) /**< No ACK returned */
#define I2C_SETUP_STATUS_DONE (1<<10) /**< Status DONE */
/*********************************************************************//**
* I2C monitor control configuration defines
**********************************************************************/
#define I2C_MONITOR_CFG_SCL_OUTPUT I2C_I2MMCTRL_ENA_SCL /**< SCL output enable */
#define I2C_MONITOR_CFG_MATCHALL I2C_I2MMCTRL_MATCH_ALL /**< Select interrupt register match */
/* ---------------- CHECK PARAMETER DEFINITIONS ---------------------------- */
/* Macros check I2C slave address */
#define PARAM_I2C_SLAVEADDR_CH(n) (n<=3)
/** Macro to determine if it is valid SSP port number */
#define PARAM_I2Cx(n) ((((uint32_t *)n)==((uint32_t *)LPC_I2C0)) \
|| (((uint32_t *)n)==((uint32_t *)LPC_I2C1)) \
|| (((uint32_t *)n)==((uint32_t *)LPC_I2C2)))
/* Macros check I2C monitor configuration type */
#define PARAM_I2C_MONITOR_CFG(n) ((n==I2C_MONITOR_CFG_SCL_OUTPUT) || (I2C_MONITOR_CFG_MATCHALL))
/* I2C state handle return values */
#define I2C_OK 0x00
#define I2C_BYTE_SENT 0x01
#define I2C_BYTE_RECV 0x02
#define I2C_LAST_BYTE_RECV 0x04
#define I2C_SEND_END 0x08
#define I2C_RECV_END 0x10
#define I2C_STA_STO_RECV 0x20
#define I2C_ERR (0x10000000)
#define I2C_NAK_RECV (0x10000000 |0x01)
#define I2C_CheckError(ErrorCode) (ErrorCode & 0x10000000)
/**
* @}
*/
/* Public Types --------------------------------------------------------------- */
/** @defgroup I2C_Public_Types I2C Public Types
* @{
*/
typedef enum
{
I2C_0 = 0,
I2C_1,
I2C_2
} en_I2C_unitId;
typedef enum
{
I2C_MASTER_MODE,
I2C_SLAVE_MODE,
I2C_GENERAL_MODE,
} en_I2C_Mode;
/**
* @brief I2C Own slave address setting structure
*/
typedef struct {
uint8_t SlaveAddrChannel; /**< Slave Address channel in I2C control,
should be in range from 0..3
*/
uint8_t SlaveAddr_7bit; /**< Value of 7-bit slave address */
uint8_t GeneralCallState; /**< Enable/Disable General Call Functionality
when I2C control being in Slave mode, should be:
- ENABLE: Enable General Call function.
- DISABLE: Disable General Call function.
*/
uint8_t SlaveAddrMaskValue; /**< Any bit in this 8-bit value (bit 7:1)
which is set to '1' will cause an automatic compare on
the corresponding bit of the received address when it
is compared to the SlaveAddr_7bit value associated with this
mask register. In other words, bits in SlaveAddr_7bit value
which are masked are not taken into account in determining
an address match
*/
} I2C_OWNSLAVEADDR_CFG_Type;
/**
* @brief Master transfer setup data structure definitions
*/
typedef struct
{
uint32_t sl_addr7bit; /**< Slave address in 7bit mode */
__IO uint8_t* tx_data; /**< Pointer to Transmit data - NULL if data transmit
is not used */
uint32_t tx_length; /**< Transmit data length - 0 if data transmit
is not used*/
__IO uint32_t tx_count; /**< Current Transmit data counter */
__IO uint8_t* rx_data; /**< Pointer to Receive data - NULL if data receive
is not used */
uint32_t rx_length; /**< Receive data length - 0 if data receive is
not used */
__IO uint32_t rx_count; /**< Current Receive data counter */
uint32_t retransmissions_max; /**< Max Re-Transmission value */
uint32_t retransmissions_count; /**< Current Re-Transmission counter */
__IO uint32_t status; /**< Current status of I2C activity */
void (*callback)(void); /**< Pointer to Call back function when transmission complete
used in interrupt transfer mode */
} I2C_M_SETUP_Type;
/**
* @brief Slave transfer setup data structure definitions
*/
typedef struct
{
__IO uint8_t* tx_data;
uint32_t tx_length;
__IO uint32_t tx_count;
__IO uint8_t* rx_data;
uint32_t rx_length;
__IO uint32_t rx_count;
__IO uint32_t status;
void (*callback)(void);
} I2C_S_SETUP_Type;
/**
* @brief Transfer option type definitions
*/
typedef enum {
I2C_TRANSFER_POLLING = 0, /**< Transfer in polling mode */
I2C_TRANSFER_INTERRUPT /**< Transfer in interrupt mode */
} I2C_TRANSFER_OPT_Type;
/**
* @}
*/
/* Public Functions ----------------------------------------------------------- */
/** @defgroup I2C_Public_Functions I2C Public Functions
* @{
*/
/* I2C Init/DeInit functions ---------- */
void I2C_Init(LPC_I2C_TypeDef *I2Cx, uint32_t clockrate);
void I2C_DeInit(LPC_I2C_TypeDef* I2Cx);
void I2C_Cmd(LPC_I2C_TypeDef* I2Cx, en_I2C_Mode Mode, FunctionalState NewState);
/* I2C transfer data functions -------- */
Status I2C_MasterTransferData(LPC_I2C_TypeDef *I2Cx, \
I2C_M_SETUP_Type *TransferCfg, I2C_TRANSFER_OPT_Type Opt);
Status I2C_SlaveTransferData(LPC_I2C_TypeDef *I2Cx, \
I2C_S_SETUP_Type *TransferCfg, I2C_TRANSFER_OPT_Type Opt);
uint32_t I2C_MasterTransferComplete(LPC_I2C_TypeDef *I2Cx);
uint32_t I2C_SlaveTransferComplete(LPC_I2C_TypeDef *I2Cx);
void I2C_SetOwnSlaveAddr(LPC_I2C_TypeDef *I2Cx, I2C_OWNSLAVEADDR_CFG_Type *OwnSlaveAddrConfigStruct);
uint8_t I2C_GetLastStatusCode(LPC_I2C_TypeDef* I2Cx);
/* I2C Monitor functions ---------------*/
void I2C_MonitorModeConfig(LPC_I2C_TypeDef *I2Cx, uint32_t MonitorCfgType, FunctionalState NewState);
void I2C_MonitorModeCmd(LPC_I2C_TypeDef *I2Cx, FunctionalState NewState);
uint8_t I2C_MonitorGetDatabuffer(LPC_I2C_TypeDef *I2Cx);
BOOL_8 I2C_MonitorHandler(LPC_I2C_TypeDef *I2Cx, uint8_t *buffer, uint32_t size);
/* I2C Interrupt handler functions ------*/
void I2C_IntCmd (LPC_I2C_TypeDef *I2Cx, Bool NewState);
void I2C_MasterHandler (LPC_I2C_TypeDef *I2Cx);
void I2C_SlaveHandler (LPC_I2C_TypeDef *I2Cx);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* LPC17XX_I2C_H_ */
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
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