/************************************************************************************ * arch/arm/src/lpc2378/lpc23xx_i2c.h * * Copyright (C) 2013 Li Zhuoyi. All rights reserved. * Author: Li Zhuoyi * * Derived arch/arm/src/lpc17xx/lpc17_i2c.h * * Copyright (C) 2010 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_LPC2378_LPC23XX_I2C_H #define __ARCH_ARM_SRC_LPC2378_LPC23XX_I2C_H /************************************************************************************ * Included Files ************************************************************************************/ #include #include "chip.h" /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* I2C Pin Configuration ************************************************************/ #define I2C0_PCLKSEL_MASK (0x03 << 14) #define I2C1_PCLKSEL_MASK (0x03 << 6) #define I2C2_PCLKSEL_MASK (0x03 << 20) #define I2C0_PCLKSEL (0x01 << 14) #define I2C1_PCLKSEL (0x01 << 6) #define I2C2_PCLKSEL (0x01 << 20) #define I2C0_PINSEL_MASK (0x0f << 22) /* P0.27 P0.28 PINSEL1 */ #define I2C1_PINSEL_MASK (0x0f) /* P0.0 P0.1 PINSEL0 */ #define I2C2_PINSEL_MASK (0x0f << 22) /* P0.10 P0.11 PINSEL0 */ #define I2C0_PINSEL (0x05 << 22) #define I2C1_PINSEL (0x0f) #define I2C2_PINSEL (0x0a << 22) /* I2C Register addresses ***********************************************************/ #define I2C0_CONSET (I2C0_BASE_ADDR+I2C_CONSET_OFFSET) #define I2C0_STAT (I2C0_BASE_ADDR+I2C_STAT_OFFSET) #define I2C0_DAT (I2C0_BASE_ADDR+I2C_DAT_OFFSET) #define I2C0_ADR0 (I2C0_BASE_ADDR+I2C_ADR0_OFFSET) #define I2C0_SCLH (I2C0_BASE_ADDR+I2C_SCLH_OFFSET) #define I2C0_SCLL (I2C0_BASE_ADDR+I2C_SCLL_OFFSET) #define I2C0_CONCLR (I2C0_BASE_ADDR+I2C_CONCLR_OFFSET) #define I2C1_CONSET (I2C1_BASE_ADDR+I2C_CONSET_OFFSET) #define I2C1_STAT (I2C1_BASE_ADDR+I2C_STAT_OFFSET) #define I2C1_DAT (I2C1_BASE_ADDR+I2C_DAT_OFFSET) #define I2C1_ADR0 (I2C1_BASE_ADDR+I2C_ADR0_OFFSET) #define I2C1_SCLH (I2C1_BASE_ADDR+I2C_SCLH_OFFSET) #define I2C1_SCLL (I2C1_BASE_ADDR+I2C_SCLL_OFFSET) #define I2C1_CONCLR (I2C1_BASE_ADDR+I2C_CONCLR_OFFSET) #define I2C2_CONSET (I2C2_BASE_ADDR+I2C_CONSET_OFFSET) #define I2C2_STAT (I2C2_BASE_ADDR+I2C_STAT_OFFSET) #define I2C2_DAT (I2C2_BASE_ADDR+I2C_DAT_OFFSET) #define I2C2_ADR0 (I2C2_BASE_ADDR+I2C_ADR0_OFFSET) #define I2C2_SCLH (I2C2_BASE_ADDR+I2C_SCLH_OFFSET) #define I2C2_SCLL (I2C2_BASE_ADDR+I2C_SCLL_OFFSET) #define I2C2_CONCLR (I2C2_BASE_ADDR+I2C_CONCLR_OFFSET) /* I2C Register bit definitions *****************************************************/ /* I2C Control Set Register */ /* Bits 0-1: Reserved */ #define I2C_CONSET_AA (1 << 2) /* Bit 2: Assert acknowledge flag */ #define I2C_CONSET_SI (1 << 3) /* Bit 3: I2C interrupt flag */ #define I2C_CONSET_STO (1 << 4) /* Bit 4: STOP flag */ #define I2C_CONSET_STA (1 << 5) /* Bit 5: START flag */ #define I2C_CONSET_I2EN (1 << 6) /* Bit 6: I2C interface enable */ /* Bits 7-31: Reserved */ /* I2C Control Clear Register */ /* Bits 0-1: Reserved */ #define I2C_CONCLR_AAC (1 << 2) /* Bit 2: Assert acknowledge Clear bit */ #define I2C_CONCLR_SIC (1 << 3) /* Bit 3: I2C interrupt Clear bit */ /* Bit 4: Reserved */ #define I2C_CONCLR_STAC (1 << 5) /* Bit 5: START flag Clear bit */ #define I2C_CONCLRT_I2ENC (1 << 6) /* Bit 6: I2C interface Disable bit */ /* Bits 7-31: Reserved */ /* I2C Status Register * * See tables 399-402 in the "LPC17xx User Manual" (UM10360), Rev. 01, 4 January * 2010, NXP for definitions of status codes. */ #define I2C_STAT_MASK (0xff) /* Bits 0-7: I2C interface status * Bits 0-1 always zero */ /* Bits 8-31: Reserved */ /* I2C Data Register */ #define I2C_DAT_MASK (0xff) /* Bits 0-7: I2C data */ /* Bits 8-31: Reserved */ #define I2C_ADR_GC (1 << 0) /* Bit 0: GC General Call enable bit */ #define I2C_ADR_ADDR_SHIFT (1) /* Bits 1-7: I2C slave address */ #define I2C_ADR_ADDR_MASK (0x7f << I2C_ADR_ADDR_SHIFT) /* Bits 8-31: Reserved */ /* I2C Slave address mask registers: * * I2C Slave address mask register 0 * I2C Slave address mask register 1 * I2C Slave address mask register 2 * I2C Slave address mask register 3 */ /* Bit 0: Reserved */ #define I2C_MASK_SHIFT (1) /* Bits 1-7: I2C mask bits */ #define I2C_MASK_MASK (0x7f << I2C_ADR_ADDR_SHIFT) /* Bits 8-31: Reserved */ /* SCH Duty Cycle Register High Half Word */ #define I2C_SCLH_MASK (0xffff) /* Bit 0-15: Count for SCL HIGH time period selection */ /* Bits 16-31: Reserved */ /* SCL Duty Cycle Register Low Half Word */ #define I2C_SCLL_MASK (0xffff) /* Bit 0-15: Count for SCL LOW time period selection */ /* Bits 16-31: Reserved */ /************************************************************************************ * Public Types ************************************************************************************/ /************************************************************************************ * Public Data ************************************************************************************/ /************************************************************************************ * Public Functions ************************************************************************************/ #endif /* __ARCH_ARM_SRC_LPC2378_LPC23XX_I2C_H */