/************************************************************************************ * arch/arm/src/lm3s/lm3s_i2c.h * * Copyright (C) 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ************************************************************************************/ #ifndef __ARCH_ARM_SRC_LM3S_LM3S_I2C_H #define __ARCH_ARM_SRC_LM3S_LM3S_I2C_H /************************************************************************************ * Included Files ************************************************************************************/ #include /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* I2C Register Offsets *************************************************************/ /* I2C Master */ #define LM3S_I2CM_SA_OFFSET 0x000 /* I2C Master Slave Address */ #define LM3S_I2CM_CS_OFFSET 0x004 /* I2C Master Control/Status */ #define LM3S_I2CM_DR_OFFSET 0x008 /* I2C Master Data */ #define LM3S_I2CM_TPR_OFFSET 0x00c /* I2C Master Timer Period */ #define LM3S_I2CM_IMR_OFFSET 0x010 /* I2C Master Interrupt Mask */ #define LM3S_I2CM_RIS_OFFSET 0x014 /* I2C Master Raw Interrupt Status */ #define LM3S_I2CM_MIS_OFFSET 0x018 /* I2C Master Masked Interrupt Status */ #define LM3S_I2CM_ICR_OFFSET 0x01c /* I2C Master Interrupt Clear */ #define LM3S_I2CM_CR_OFFSET 0x020 /* I2C Master Configuration */ /* I2C Slave */ #define LM3S_I2CS_OAR_OFFSET 0x000 /* I2C Slave Own Address */ #define LM3S_I2CS_CSR_OFFSET 0x004 /* I2C Slave Control/Status */ #define LM3S_I2CS_DR_OFFSET 0x008 /* I2C Slave Data */ #define LM3S_I2CS_IMR_OFFSET 0x00c /* I2C Slave Interrupt Mask */ #define LM3S_I2CS_RIS_OFFSET 0x010 /* I2C Slave Raw Interrupt Status */ #define LM3S_I2CS_MIS_OFFSET 0x014 /* I2C Slave Masked Interrupt Status */ #define LM3S_I2CS_ICR_OFFSET 0x018 /* I2C Slave Interrupt Clear */ /* I2C Register Addresses ***********************************************************/ #if LM3S_NI2C > 0 /* I2C Master */ #define LM3S_I2CM_BASE(n) (LM3S_I2CM0_BASE + (n)*0x1000) #define LM3S_I2CM_SA(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_SA_OFFSET) #define LM3S_I2CM_CS(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_CS_OFFSET) #define LM3S_I2CM_DR(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_DR_OFFSET) #define LM3S_I2CM_TPR(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_TPR_OFFSET) #define LM3S_I2CM_IMR(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_IMR_OFFSET) #define LM3S_I2CM_RIS(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_RIS_OFFSET) #define LM3S_I2CM_MIS(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_MIS_OFFSET) #define LM3S_I2CM_ICR(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_ICR_OFFSET) #define LM3S_I2CM_CR(n) (LM3S_I2CM_BASE(n) + LM3S_I2CM_CR_OFFSET) /* I2C Slave */ #define LM3S_I2CS_BASE(n) (LM3S_I2CS0_BASE + (n)*0x1000) #define LM3S_I2CS_OAR(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_OAR_OFFSET) #define LM3S_I2CS_CSR(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_CSR_OFFSET) #define LM3S_I2CS_DR(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_DR_OFFSET) #define LM3S_I2CS_IMR(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_IMR_OFFSET) #define LM3S_I2CS_RIS(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_RIS_OFFSET) #define LM3S_I2CS_MIS(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_MIS_OFFSET) #define LM3S_I2CS_ICR(n) (LM3S_I2CS_BASE(n) + LM3S_I2CS_ICR_OFFSET) /* I2C0 Master */ #define LM3S_I2CM0_SA (LM3S_I2CM0_BASE + LM3S_I2CM_SA_OFFSET) #define LM3S_I2CM0_CS (LM3S_I2CM0_BASE + LM3S_I2CM_CS_OFFSET) #define LM3S_I2CM0_DR (LM3S_I2CM0_BASE + LM3S_I2CM_DR_OFFSET) #define LM3S_I2CM0_TPR (LM3S_I2CM0_BASE + LM3S_I2CM_TPR_OFFSET) #define LM3S_I2CM0_IMR (LM3S_I2CM0_BASE + LM3S_I2CM_IMR_OFFSET) #define LM3S_I2CM0_RIS (LM3S_I2CM0_BASE + LM3S_I2CM_RIS_OFFSET) #define LM3S_I2CM0_MIS (LM3S_I2CM0_BASE + LM3S_I2CM_MIS_OFFSET) #define LM3S_I2CM0_ICR (LM3S_I2CM0_BASE + LM3S_I2CM_ICR_OFFSET) #define LM3S_I2CM0_CR (LM3S_I2CM0_BASE + LM3S_I2CM_CR_OFFSET) /* I2C0 Slave */ #define LM3S_I2CS0_OAR (LM3S_I2CS0_BASE + LM3S_I2CS_OAR_OFFSET) #define LM3S_I2CS0_CSR (LM3S_I2CS0_BASE + LM3S_I2CS_CSR_OFFSET) #define LM3S_I2CS0_DR (LM3S_I2CS0_BASE + LM3S_I2CS_DR_OFFSET) #define LM3S_I2CS0_IMR (LM3S_I2CS0_BASE + LM3S_I2CS_IMR_OFFSET) #define LM3S_I2CS0_RIS (LM3S_I2CS0_BASE + LM3S_I2CS_RIS_OFFSET) #define LM3S_I2CS0_MIS (LM3S_I2CS0_BASE + LM3S_I2CS_MIS_OFFSET) #define LM3S_I2CS0_ICR (LM3S_I2CS0_BASE + LM3S_I2CS_ICR_OFFSET) #if LM3S_NI2C > 1 /* I2C1 Master */ #define LM3S_I2CM1_SA (LM3S_I2CM1_BASE + LM3S_I2CM_SA_OFFSET) #define LM3S_I2CM1_CS (LM3S_I2CM1_BASE + LM3S_I2CM_CS_OFFSET) #define LM3S_I2CM1_DR (LM3S_I2CM1_BASE + LM3S_I2CM_DR_OFFSET) #define LM3S_I2CM1_TPR (LM3S_I2CM1_BASE + LM3S_I2CM_TPR_OFFSET) #define LM3S_I2CM1_IMR (LM3S_I2CM1_BASE + LM3S_I2CM_IMR_OFFSET) #define LM3S_I2CM1_RIS (LM3S_I2CM1_BASE + LM3S_I2CM_RIS_OFFSET) #define LM3S_I2CM1_MIS (LM3S_I2CM1_BASE + LM3S_I2CM_MIS_OFFSET) #define LM3S_I2CM1_ICR (LM3S_I2CM1_BASE + LM3S_I2CM_ICR_OFFSET) #define LM3S_I2CM1_CR (LM3S_I2CM1_BASE + LM3S_I2CM_CR_OFFSET) /* I2C1 Slave */ #define LM3S_I2CS1_OAR (LM3S_I2CS1_BASE + LM3S_I2CS_OAR_OFFSET) #define LM3S_I2CS1_CSR (LM3S_I2CS1_BASE + LM3S_I2CS_CSR_OFFSET) #define LM3S_I2CS1_DR (LM3S_I2CS1_BASE + LM3S_I2CS_DR_OFFSET) #define LM3S_I2CS1_IMR (LM3S_I2CS1_BASE + LM3S_I2CS_IMR_OFFSET) #define LM3S_I2CS1_RIS (LM3S_I2CS1_BASE + LM3S_I2CS_RIS_OFFSET) #define LM3S_I2CS1_MIS (LM3S_I2CS1_BASE + LM3S_I2CS_MIS_OFFSET) #define LM3S_I2CS1_ICR (LM3S_I2CS1_BASE + LM3S_I2CS_ICR_OFFSET) #endif #endif /* I2C_Register Bit Definitions *****************************************************/ /* I2C Master Slave Address (I2CM_SA), offset 0x000 */ #define I2CM_SA_RS (1 << 0) /* Bit 0: Receive/Send */ #define I2CM_SA_SA_SHIFT 1 /* Bits 7-1: I2C Slave Address */ #define I2CM_SA_SA_MASK (0x7f << I2CM_SA_SA_SHIFT) /* I2C Master Control/Status (I2CM_CS), offset 0x004 */ #define I2CM_CS_BUSY (1 << 0) /* Bit 0: I2C Busy (read) */ #define I2CM_CS_ERROR (1 << 1) /* Bit 1: Error in last bus operation (read) */ #define I2CM_CS_ADRACK (1 << 2) /* Bit 2: Acknowledge Address (read) */ #define I2CM_CS_DATACK (1 << 3) /* Bit 3: Acknowledge Data (read) */ #define I2CM_CS_ARBLST (1 << 4) /* Bit 4: Arbitration Lost (read) */ #define I2CM_CS_IDLE (1 << 5) /* Bit 5: I2C Idle (read) */ #define I2CM_CS_BUSBSY (1 << 6) /* Bit 6: Bus Busy (read) */ #define I2CM_CS_RUN (1 << 0) /* Bit 0: I2C Master Enable (write) */ #define I2CM_CS_START (1 << 1) /* Bit 1: Generate START (write) */ #define I2CM_CS_STOP (1 << 2) /* Bit 2: Generate STOP (write) */ #define I2CM_CS_ACK (1 << 3) /* Bit 3: Data Acknowledge Enable (write) */ /* I2C Master Data (I2CM_DR), offset 0x008 */ #define I2CM_DR_MASK 0xff /* Bits 7-0: Data transferred */ /* I2C Master Timer Period (I2CM_TPR), offset 0x00c */ #define I2CM_TPR_MASK 0xff /* Bits 7-0: SCL Clock Period */ /* I2C Master Interrupt Mask (I2CM_IMR), offset 0x010 */ #define I2CM_IMR_IM (1 << 0) /* Bit 0: Interrupt Mask */ /* I2C Master Raw Interrupt Status (I2CM_RIS), offset 0x014 */ #define I2CM_RIS_RIS (1 << 0) /* Bit 0: Raw Interrupt Status */ /* I2C Master Masked Interrupt Status (I2CM_MIS), offset 0x018 */ #define I2CM_MIS_MIS (1 << 0) /* Bit 0: Masked Interrupt Status */ /* I2C Master Masked Interrupt Status (I2CM_ICR), offset 0x01c */ #define I2CM_ICR_IC (1 << 0) /* Bit 0: Masked Interrupt Status */ /* I2C Master Configuration (I2CM_CR), offset 0x020 */ #define I2CM_CR_LPBK (1 << 0) /* Bit 0:: I2C Loopback */ #define I2CM_CR_MFE (1 << 4 ) /* Bit 4: I2C Master Function Enable */ #define I2CM_CR_SFE (1 << 5) /* Bit 5: I2C Slave Function Enable */ /* I2C Slave Own Address (I2CS_OAR), offset 0x000 */ #define I2CS_OAR_MASK 0xff /* Bits 7-0: I2C Slave Own Address */ /* I2C Slave Control/Status (I2CS_CSR), offset 0x004 */ #define I2CS_CSR_RREQ (1 << 0) /* Bit 0: Receive Request (read) */ #define I2CS_CSR_TREQ (1 << 1) /* Bit 1: Transmit Request (read) */ #define I2CS_CSR_FBR (1 << 2) /* Bit 2: First Byte Received (read) */ #define I2CS_CSR_DA (1 << 0) /* Bit 0: Device Active (write) */ /* I2C Slave Data (I2CS_DR), offset 0x008 */ #define I2CS_DR_MASK 0xff /* Bits 7-0: Data for Transfer */ /* I2C Slave Interrupt Mask (I2CS_IMR), offset 0x00c */ #define I2CM_IMR_DATAIM (1 << 0) /* Bit 0: Data Interrupt Mask */ /* I2C Slave Raw Interrupt Status (I2CS_RIS), offset 0x010 */ #define I2CM_RIS_DATARIS (1 << 0) /* Bit 0: Data Raw Interrupt Status */ /* I2C Slave Masked Interrupt Status (I2CS_MIS), offset 0x014 */ #define I2CM_MIS_DATAMIS (1 << 0) /* Bit 0: Data Masked Interrupt Status */ /* I2C Slave Interrupt Clear (I2CS_ICR), offset 0x018 */ #define I2CM_ICR_DATAIC (1 << 0) /* Bit 0: Data Interrupt Clear */ /************************************************************************************ * Public Types ************************************************************************************/ /************************************************************************************ * Public Data ************************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #endif /* __ARCH_ARM_SRC_LM3S_LM3S_I2C_H */