Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/pcf8584reg.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
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1 /* $NetBSD: pcf8584reg.h,v 1.2 2016/01/03 17:32:17 jdc Exp $ */ 2 3 /* Written by Tobias Nygren. Released into the public domain. */ 4 5 /* SCL clock frequency */ 6 #define PCF8584_SCL_90 0 /* 90 kHz */ 7 #define PCF8584_SCL_45 1 /* 45 kHz */ 8 #define PCF8584_SCL_11 2 /* 11 kHz */ 9 #define PCF8584_SCL_1_5 3 /* 1.5 kHz */ 10 11 /* Internal clock frequency */ 12 #define PCF8584_CLK_3 0 /* 3 MHz */ 13 #define PCF8584_CLK_4_43 0x10 /* 4.43 MHz */ 14 #define PCF8584_CLK_6 0x14 /* 6 MHz */ 15 #define PCF8584_CLK_8 0x18 /* 8 MHz */ 16 #define PCF8584_CLK_12 0x1C /* 12 MHz */ 17 18 /* Control register bits (write only) */ 19 #define PCF8584_CTRL_ACK (1<<0) /* send ACK */ 20 #define PCF8584_CTRL_STO (1<<1) /* send STOP */ 21 #define PCF8584_CTRL_STA (1<<2) /* send START */ 22 #define PCF8584_CTRL_ENI (1<<3) /* Enable Interrupt */ 23 #define PCF8584_CTRL_ES2 (1<<4) /* alternate register selection */ 24 #define PCF8584_CTRL_ES1 (1<<5) /* alternate register selection */ 25 #define PCF8584_CTRL_ESO (1<<6) /* Enable Serial Output */ 26 #define PCF8584_CTRL_PIN (1<<7) /* Pending Interrupt Not */ 27 28 /* Status register bits (read only) */ 29 #define PCF8584_STATUS_BBN (1<<0) /* Bus Busy Not */ 30 #define PCF8584_STATUS_LAB (1<<1) /* Lost Arbitration */ 31 #define PCF8584_STATUS_AAS (1<<2) /* Adressed As Slave */ 32 #define PCF8584_STATUS_LRB (1<<3) /* Last Received Bit (NAK+bcast det.) */ 33 #define PCF8584_STATUS_BER (1<<4) /* Bus error */ 34 #define PCF8584_STATUS_STS (1<<5) /* external STOP condition detected */ 35 #define PCF8584_STATUS_INI (1<<6) /* 0 if initialized */ 36 #define PCF8584_STATUS_PIN (1<<7) /* Pending Interrupt Not */ 37 38 #define PCF8584_REG_S0_ 0 /* S0' own address */ 39 #define PCF8584_REG_S2 PCF8584_CTRL_ES1 /* clock register */ 40 #define PCF8584_REG_S3 PCF8584_CTRL_ES2 /* Interrupt vector */ 41 42 #define PCF8584_CMD_START (PCF8584_CTRL_PIN | PCF8584_CTRL_ESO | \ 43 PCF8584_CTRL_STA | PCF8584_CTRL_ACK) 44 #define PCF8584_CMD_STOP (PCF8584_CTRL_PIN | PCF8584_CTRL_ESO | \ 45 PCF8584_CTRL_STO | PCF8584_CTRL_ACK) 46 #define PCF8584_CMD_REPSTART (PCF8584_CTRL_ESO | PCF8584_CTRL_STA | \ 47 PCF8584_CTRL_ACK) 48 #define PCF8584_CMD_IDLE (PCF8584_CTRL_PIN | PCF8584_CTRL_ESO | \ 49 PCF8584_CTRL_ACK) 50 #define PCF8584_CMD_NAK (PCF8584_CTRL_ESO)
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