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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-02-10 20:35:34 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-02-10 20:35:34 +0000 |
commit | 7f70b0ff398db4b0f6640b7758893bd97d62488c (patch) | |
tree | 26595f05efaac1fb628309a768cde2c0bc25b9aa /nuttx/arch | |
parent | 610648a0b4a6115a3d73a40ae108fb18a75c1965 (diff) | |
download | px4-nuttx-7f70b0ff398db4b0f6640b7758893bd97d62488c.tar.gz px4-nuttx-7f70b0ff398db4b0f6640b7758893bd97d62488c.tar.bz2 px4-nuttx-7f70b0ff398db4b0f6640b7758893bd97d62488c.zip |
Add STM32 F3 I2C register definitions
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5636 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch')
-rw-r--r-- | nuttx/arch/arm/src/stm32/chip/stm32f30xxx_i2c.h | 240 | ||||
-rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_i2c.c | 10 | ||||
-rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_i2c.h | 8 |
3 files changed, 255 insertions, 3 deletions
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_i2c.h b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_i2c.h new file mode 100644 index 000000000..92eacaf40 --- /dev/null +++ b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_i2c.h @@ -0,0 +1,240 @@ +/************************************************************************************ + * arch/arm/src/stm32/chip/stm32f30xxx_i2c.h + * + * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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_STM32_CHIP_STM32F30XXX_I2C_H +#define __ARCH_ARM_SRC_STM32_CHIP_STM32F30XXX_I2C_H + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ + +/* Register Offsets *****************************************************************/ + +#define STM32_I2C_CR1_OFFSET 0x0000 /* Control register 1 (32-bit) */ +#define STM32_I2C_CR2_OFFSET 0x0004 /* Control register 2 (32-bit) */ +#define STM32_I2C_OAR1_OFFSET 0x0008 /* Own address register 1 (16-bit) */ +#define STM32_I2C_OAR2_OFFSET 0x000c /* Own address register 2 (16-bit) */ +#define STM32_I2C_TIMINGR_OFFSET 0x0010 /* Timing register */ +#define STM32_I2C_TIMEOUTR_OFFSET 0x0014 /* Timeout register */ +#define STM32_I2C_ISR_OFFSET 0x0018 /* Interrupt and Status register */ +#define STM32_I2C_ICR_OFFSET 0x001c /* Interrupt clear register */ +#define STM32_I2C_PECR_OFFSET 0x0020 /* Packet error checking register */ +#define STM32_I2C_RXDR_OFFSET 0x0024 /* Receive data register */ +#define STM32_I2C_TXDR_OFFSET 0x0028 /* Transmit data register */ + +/* Register Addresses ***************************************************************/ + +#if STM32_NI2C > 0 +# define STM32_I2C1_CR1 (STM32_I2C1_BASE+STM32_I2C_CR1_OFFSET) +# define STM32_I2C1_CR2 (STM32_I2C1_BASE+STM32_I2C_CR2_OFFSET) +# define STM32_I2C1_OAR1 (STM32_I2C1_BASE+STM32_I2C_OAR1_OFFSET) +# define STM32_I2C1_OAR2 (STM32_I2C1_BASE+STM32_I2C_OAR2_OFFSET) +# define STM32_I2C1_TIMINGR (STM32_I2C1_BASE+STM32_I2C_TIMINGR_OFFSET) +# define STM32_I2C1_TIMEOUTR (STM32_I2C1_BASE+STM32_I2C_TIMEOUTR_OFFSET) +# define STM32_I2C1_ISR (STM32_I2C1_BASE+STM32_I2C_ISR_OFFSET) +# define STM32_I2C1_ICR (STM32_I2C1_BASE+STM32_I2C_ICR_OFFSET) +# define STM32_I2C1_PECR (STM32_I2C1_BASE+STM32_I2C_PECR_OFFSET) +# define STM32_I2C1_RXDR (STM32_I2C1_BASE+STM32_I2C_RXDR_OFFSET) +# define STM32_I2C1_TXDR (STM32_I2C1_BASE+STM32_I2C_TXDR_OFFSET) +#endif + +#if STM32_NI2C > 1 +# define STM32_I2C2_CR1 (STM32_I2C2_BASE+STM32_I2C_CR1_OFFSET) +# define STM32_I2C2_CR2 (STM32_I2C2_BASE+STM32_I2C_CR2_OFFSET) +# define STM32_I2C2_OAR1 (STM32_I2C2_BASE+STM32_I2C_OAR1_OFFSET) +# define STM32_I2C2_OAR2 (STM32_I2C2_BASE+STM32_I2C_OAR2_OFFSET) +# define STM32_I2C2_TIMINGR (STM32_I2C2_BASE+STM32_I2C_TIMINGR_OFFSET) +# define STM32_I2C2_TIMEOUTR (STM32_I2C2_BASE+STM32_I2C_TIMEOUTR_OFFSET) +# define STM32_I2C2_ISR (STM32_I2C2_BASE+STM32_I2C_ISR_OFFSET) +# define STM32_I2C2_ICR (STM32_I2C2_BASE+STM32_I2C_ICR_OFFSET) +# define STM32_I2C2_PECR (STM32_I2C2_BASE+STM32_I2C_PECR_OFFSET) +# define STM32_I2C2_RXDR (STM32_I2C2_BASE+STM32_I2C_RXDR_OFFSET) +# define STM32_I2C2_TXDR (STM32_I2C2_BASE+STM32_I2C_TXDR_OFFSET) +#endif + +#if STM32_NI2C > 2 +# define STM32_I2C3_CR1 (STM32_I2C3_BASE+STM32_I2C_CR1_OFFSET) +# define STM32_I2C3_CR2 (STM32_I2C3_BASE+STM32_I2C_CR2_OFFSET) +# define STM32_I2C3_OAR1 (STM32_I2C3_BASE+STM32_I2C_OAR1_OFFSET) +# define STM32_I2C3_OAR2 (STM32_I2C3_BASE+STM32_I2C_OAR2_OFFSET) +# define STM32_I2C3_TIMINGR (STM32_I2C3_BASE+STM32_I2C_TIMINGR_OFFSET) +# define STM32_I2C3_TIMEOUTR (STM32_I2C3_BASE+STM32_I2C_TIMEOUTR_OFFSET) +# define STM32_I2C3_ISR (STM32_I2C3_BASE+STM32_I2C_ISR_OFFSET) +# define STM32_I2C3_ICR (STM32_I2C3_BASE+STM32_I2C_ICR_OFFSET) +# define STM32_I2C3_PECR (STM32_I2C3_BASE+STM32_I2C_PECR_OFFSET) +# define STM32_I2C3_RXDR (STM32_I2C3_BASE+STM32_I2C_RXDR_OFFSET) +# define STM32_I2C3_TXDR (STM32_I2C3_BASE+STM32_I2C_TXDR_OFFSET) +#endif + +/* Register Bitfield Definitions ****************************************************/ + +/* Control register 1 */ + +#define I2C_CR1_PE (1 << 0) /* Bit 0: Peripheral Enable */ +#define I2C_CR1_TXIE (1 << 1) /* Bit 1: TX Interrupt enable */ +#define I2C_CR1_RXIE (1 << 2) /* Bit 2: RX Interrupt enable */ +#define I2C_CR1_ADDRIE (1 << 3) /* Bit 3: Address match interrupt enable (slave) */ +#define I2C_CR1_NACKIE (1 << 4) /* Bit 4: Not acknowledge received interrupt enable */ +#define I2C_CR1_STOPIE (1 << 5) /* Bit 5: STOP detection interrupt enable */ +#define I2C_CR1_TCIE (1 << 6) /* Bit 6: Transfer Complete interrupt enable */ +#define I2C_CR1_ERRIE (1 << 7) /* Bit 7: Error interrupts enable */ +#define I2C_CR1_DNF_SHIFT (8) /* Bits 8-11: Digital noise filter */ +#define I2C_CR1_DNF_MASK (15 << I2C_CR1_DNF_SHIFT) +# define I2C_CR1_DNF_DISABLE (0 << I2C_CR1_DNF_SHIFT) +# define I2C_CR1_DNF(n) ((n) << I2C_CR1_DNF_SHIFT) /* Up to n * Ti2cclk, n=1..15 */ +#define I2C_CR1_ANFOFF (1 << 12) /* Bit 12: Analog noise filter OFF */ +#define I2C_CR1_TXDMAEN (1 << 14) /* Bit 14: DMA transmission requests enable */ +#define I2C_CR1_RXDMAEN (1 << 15) /* Bit 15: DMA reception requests enable */ +#define I2C_CR1_SBC (1 << 16) /* Bit 16: Slave byte control */ +#define I2C_CR1_NOSTRETCH (1 << 17) /* Bit 17: Clock stretching disable */ +#define I2C_CR1_WUPEN (1 << 18) /* Bit 18: Wakeup from STOP enable */ +#define I2C_CR1_GCEN (1 << 19) /* Bit 19: General call enable */ +#define I2C_CR1_SMBHEN (1 << 20) /* Bit 20: SMBus Host address enable */ +#define I2C_CR1_SMBDEN (1 << 21) /* Bit 21: SMBus Device Default address enable */ +#define I2C_CR1_ALERTEN (1 << 22) /* Bit 22: SMBus alert enable */ +#define I2C_CR1_PECEN (1 << 23) /* Bit 23: PEC enable */ + +/* Control register 2 */ + +#define I2C_CR2_SADD10_SHIFT (0) /* Bits 0-9: Slave 10-bit address (master) */ +#define I2C_CR2_SADD10_MASK (0x3ff << I2C_CR2_SADD10_SHIFT) +#define I2C_CR2_SADD7_SHIFT (1) /* Bits 1-7: Slave 7-bit address (master) */ +#define I2C_CR2_SADD7_MASK (0x7f << I2C_CR2_SADD7_SHIFT) +#define I2C_CR2_RD_WRN (1 << 10) /* Bit 10: Transfer direction (master) */ +#define I2C_CR2_ADD10 (1 << 11) /* Bit 11: 10-bit addressing mode (master) */ +#define I2C_CR2_HEAD10R (1 << 12) /* Bit 12: 10-bit address header only read direction (master) */ +#define I2C_CR2_START (1 << 13) /* Bit 13: Start generation */ +#define I2C_CR2_STOP (1 << 14) /* Bit 14: Stop generation (master) */ +#define I2C_CR2_NACK (1 << 15) /* Bit 15: NACK generation (slave) */ +#define I2C_CR2_NBYTES_SHIFT (16) /* Bits 16-23: Number of bytes */ +#define I2C_CR2_NBYTES_MASK (0xff << I2C_CR2_NBYTES_SHIFT) +#define I2C_CR2_RELOAD (1 << 24) /* Bit 24: NBYTES reload mode */ +#define I2C_CR2_AUTOEND (1 << 25) /* Bit 25: Automatic end mode (master) */ +#define I2C_CR2_PECBYTE (1 << 26) /* Bit 26: Packet error checking byte */ + +/* Own address register 1 */ + +#define I2C_OAR1_OA1_10_SHIFT (0) /* Bits 0-9: 10-bit interface address */ +#define I2C_OAR1_OA1_10_MASK (0x3ff << I2C_OAR1_OA1_10_SHIFT) +#define I2C_OAR1_OA1_7_SHIFT (1) /* Bits 1-7: 7-bit interface address */ +#define I2C_OAR1_OA1_7_MASK (0x7f << I2C_OAR1_OA1_7_SHIFT) +#define I2C_OAR1_OA1MODE (1 << 10) /* Bit 10: Own Address 1 10-bit mode */ +#define I2C_OAR1_OA1EN (1 << 15) /* Bit 15: Own Address 1 enable */ + +/* Own address register 2 */ + +#define I2C_OAR2_OA2_SHIFT (1) /* Bits 1-7: 7-bit interface address */ +#define I2C_OAR2_OA2_MASK (0x7f << I2C_OAR2_OA2_SHIFT) +#define I2C_OAR2_OA2MSK_SHIFT (8) /* Bits 8-10: Own Address 2 masks */ +#define I2C_OAR2_OA2MSK_MASK (7 << I2C_OAR2_OA2MSK_SHIFT) +# define I2C_OAR2_OA2MSK_NONE (0 << I2C_OAR2_OA2MSK_SHIFT) /* No mask */ +# define I2C_OAR2_OA2MSK_2_7 (1 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7:2] are compared */ +# define I2C_OAR2_OA2MSK_3_7 (2 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7:3] are compared */ +# define I2C_OAR2_OA2MSK_4_7 (3 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7:4] are compared */ +# define I2C_OAR2_OA2MSK_5_7 (4 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7:5] are compared */ +# define I2C_OAR2_OA2MSK_6_7 (5 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7:6] are compared */ +# define I2C_OAR2_OA2MSK_7 (6 << I2C_OAR2_OA2MSK_SHIFT) /* Only OA2[7] is compared */ +# define I2C_OAR2_OA2MSK_ALL (7 << I2C_OAR2_OA2MSK_SHIFT) /* All 7-bit addresses acknowledged */ +#define I2C_OAR2_OA2EN (1 << 15) /* Bit 15: Own Address 2 enable */ + +/* Timing register */ + +#define I2C_TIMINGR_SCLL_SHIFT (0) /* Bits 0-7: SCL low period (master) */ +#define I2C_TIMINGR_SCLL_MASK (0xff << I2C_TIMINGR_SCLL_SHIFT) +# define I2C_TIMINGR_SCLL(n) (((n)-1) << I2C_TIMINGR_SCLL_SHIFT) /* tSCLL = n x tPRESC */ +#define I2C_TIMINGR_SCLH_SHIFT (0) /* Bits 8-15: SCL high period (master) */ +#define I2C_TIMINGR_SCLH_MASK (0xff << I2C_TIMINGR_SCLH_SHIFT) +# define I2C_TIMINGR_SCLH(n) (((n)-1) << I2C_TIMINGR_SCLH_SHIFT) /* tSCLH = n x tPRESC */ +#define I2C_TIMINGR_SDADEL_SHIFT (0) /* Bits 16-19: Data hold time */ +#define I2C_TIMINGR_SDADEL_MASK (15 << I2C_TIMINGR_SDADEL_SHIFT) +# define I2C_TIMINGR_SDADEL(n) ((n) << I2C_TIMINGR_SDADEL_SHIFT) /* tSDADEL= n x tPRESC */ +#define I2C_TIMINGR_SCLDEL_SHIFT (0) /* Bits 20-23: Data setup time */ +#define I2C_TIMINGR_SCLDEL_MASK (15 << I2C_TIMINGR_SCLDEL_SHIFT) +# define I2C_TIMINGR_SCLDEL(n) (((n)-1) << I2C_TIMINGR_SCLDEL_SHIFT) /* tSCLDEL = n x tPRESC */ +#define I2C_TIMINGR_PRESC_SHIFT (0) /* Bits 28-31: Timing prescaler */ +#define I2C_TIMINGR_PRESC_MASK (15 << I2C_TIMINGR_PRESC_SHIFT) +# define I2C_TIMINGR_PRESC(n) (((n)-1) << I2C_TIMINGR_PRESC_SHIFT) /* tPRESC = n x tI2CCLK */ + +/* Timeout register */ + +#define I2C_TIMEOUTR_A_SHIFT (0) /* Bits 0-11: Bus Timeout A */ +#define I2C_TIMEOUTR_A_MASK (0x0fff << I2C_TIMEOUTR_A_SHIFT) +# define I2C_TIMEOUTR_A(n) ((n) << I2C_TIMEOUTR_A_SHIFT) +#define I2C_TIMEOUTR_TIDLE (1 << 12) /* Bit 12: Idle clock timeout detection */ +#define I2C_TIMEOUTR_TIMOUTEN (1 << 15) /* Bit 15: Clock timeout enable */ +#define I2C_TIMEOUTR_B_SHIFT (16) /* Bits 16-27: Bus Timeout B */ +#define I2C_TIMEOUTR_B_MASK (0x0fff << I2C_TIMEOUTR_B_SHIFT) +# define I2C_TIMEOUTR_B(n) ((n) << I2C_TIMEOUTR_B_SHIFT) +#define I2C_TIMEOUTR_TEXTEN (1 << 31) /* Bits 31: Extended clock timeout enable */ + +/* Interrupt and Status register and interrupt clear register */ +/* Common interrupt bits */ + +#define I2C_INT_ADDR (1 << 3) /* Bit 3: Address matched (slave) */ +#define I2C_INT_NACK (1 << 4) /* Bit 4: Not Acknowledge received flag */ +#define I2C_INT_STOP (1 << 5) /* Bit 5: Stop detection flag */ +#define I2C_INT_BERR (1 << 8) /* Bit 8: Bus error */ +#define I2C_INT_ARLO (1 << 9) /* Bit 9: Arbitration lost */ +#define I2C_INT_OVR (1 << 10) /* Bit 10: Overrun/Underrun (slave) */ +#define I2C_INT_PECERR (1 << 11) /* Bit 11: PEC Error in reception */ +#define I2C_INT_TIMEOUT (1 << 12) /* Bit 12: Timeout or tLOW detection flag */ +#define I2C_INT_ALERT (1 << 13) /* Bit 13: SMBus alert */ + +/* Fields unique to the Interrupt and Status register */ + +#define I2C_ISR_TXE (1 << 0) /* Bit 0: Transmit data register empty (transmitters) */ +#define I2C_ISR_TXIS (1 << 1) /* Bit 1: Transmit interrupt status (transmitters) */ +#define I2C_ISR_RXNE (1 << 2) /* Bit 2: Receive data register not empty (receivers) */ +#define I2C_ISR_TC (1 << 6) /* Bit 6: Transfer Complete (master) */ +#define I2C_ISR_TCR (1 << 7) /* Bit 7: Transfer Complete Reload */ +#define I2C_ISR_BUSY (1 << 15) /* Bit 15: Bus busy */ +#define I2C_ISR_DIR (1 << 16) /* Bit 16: Transfer direction (slave) */ +#define I2C_ISR_ADDCODE_SHIFT (17) /* Bits 17-23: Address match code (slave) */ +#define I2C_ISR_ADDCODE_MASK (0x7f << I2C_ISR_ADDCODE_SHIFT) + +/* Packet error checking register */ + +#define I2C_PECR_MASK (0xff) + +/* Receive data register */ + +#define I2C_RXDR_MASK (0xff) + +/* Transmit data register */ + +#define I2C_TXDR_MASK (0xff) + +#endif /* __ARCH_ARM_SRC_STM32_CHIP_STM32F30XXX_I2C_H */ + diff --git a/nuttx/arch/arm/src/stm32/stm32_i2c.c b/nuttx/arch/arm/src/stm32/stm32_i2c.c index c2d638dd4..ee1033635 100644 --- a/nuttx/arch/arm/src/stm32/stm32_i2c.c +++ b/nuttx/arch/arm/src/stm32/stm32_i2c.c @@ -7,7 +7,7 @@ * * With extensions, modifications by: * - * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. + * Copyright (C) 2011-2013 Gregory Nutt. All rights reserved. * Author: Gregroy Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -93,8 +93,15 @@ #include "stm32_i2c.h" #include "stm32_waste.h" +/* At least one I2C peripheral must be enabled */ + #if defined(CONFIG_STM32_I2C1) || defined(CONFIG_STM32_I2C2) || defined(CONFIG_STM32_I2C3) +/* This implementation is for the STM32 F1, F2, and F4 only */ + +#if defined(CONFIG_STM32_STM32F10XX) || defined(CONFIG_STM32_STM32F20XX) || \ + defined(CONFIG_STM32_STM32F40XX) + /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ @@ -2086,4 +2093,5 @@ out: } #endif /* CONFIG_I2C_RESET */ +#endif /* CONFIG_STM32_STM32F10XX || CONFIG_STM32_STM32F20XX || CONFIG_STM32_STM32F40XX */ #endif /* CONFIG_STM32_I2C1 || CONFIG_STM32_I2C2 || CONFIG_STM32_I2C3 */ diff --git a/nuttx/arch/arm/src/stm32/stm32_i2c.h b/nuttx/arch/arm/src/stm32/stm32_i2c.h index b914c4247..09fad8779 100644 --- a/nuttx/arch/arm/src/stm32/stm32_i2c.h +++ b/nuttx/arch/arm/src/stm32/stm32_i2c.h @@ -1,7 +1,7 @@ /************************************************************************************ * arch/arm/src/stm32/stm32_i2c.h * - * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. + * Copyright (C) 2009, 2011, 2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -44,7 +44,11 @@ #include <nuttx/i2c.h> #include "chip.h" -#include "chip/stm32_i2c.h" +#if defined(CONFIG_STM32_STM32F30XX) +# include "chip/stm32f30xxx_i2c.h" +#else +# include "chip/stm32_i2c.h" +#endif #endif /* __ARCH_ARM_SRC_STM32_STM32_I2C_H */ |