source: rtems/bsps/arm/stm32f4/include/bsp/stm32_i2c.h @ 2afb22b

5
Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

  • The make preinstall step itself needs time and disk space.
  • Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error.
  • There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult.
  • The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit.
  • An introduction of a new build system is difficult.
  • Include paths specified by the -B option are system headers. This may suppress warnings.
  • The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

  • cpukit/include
  • cpukit/score/cpu/@RTEMS_CPU@/include
  • cpukit/libnetworking

The new BSP include directories are:

  • bsps/include
  • bsps/@RTEMS_CPU@/include
  • bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.
  • Property mode set to 100644
File size: 4.0 KB
Line 
1/**
2 * @file
3 * @ingroup stm32_i2c
4 * @brief STM32 I2C support.
5 */
6
7/*
8 * Copyright (c) 2013 Christian Mauderer.  All rights reserved.
9 *
10 *  embedded brains GmbH
11 *  Obere Lagerstr. 30
12 *  82178 Puchheim
13 *  Germany
14 *  <rtems@embedded-brains.de>
15 *
16 * The license and distribution terms for this file may be
17 * found in the file LICENSE in this distribution or at
18 * http://www.rtems.org/license/LICENSE.
19 */
20
21#ifndef LIBBSP_ARM_STM32F4_STM32_I2C_H
22#define LIBBSP_ARM_STM32F4_STM32_I2C_H
23
24#include <bsp/utility.h>
25
26/**
27 * @defgroup stm32_i2c STM32 I2C Support
28 * @ingroup stm32f4_i2c
29 * @brief STM32 I2C Support
30 * @{
31 */
32
33typedef struct {
34        uint32_t cr1;
35#define STM32F4_I2C_CR1_SWRST BSP_BIT32(15)
36#define STM32F4_I2C_CR1_ALERT BSP_BIT32(13)
37#define STM32F4_I2C_CR1_PEC BSP_BIT32(12)
38#define STM32F4_I2C_CR1_POS BSP_BIT32(11)
39#define STM32F4_I2C_CR1_ACK BSP_BIT32(10)
40#define STM32F4_I2C_CR1_STOP BSP_BIT32(9)
41#define STM32F4_I2C_CR1_START BSP_BIT32(8)
42#define STM32F4_I2C_CR1_NOSTRETCH BSP_BIT32(7)
43#define STM32F4_I2C_CR1_ENGC BSP_BIT32(6)
44#define STM32F4_I2C_CR1_ENPEC BSP_BIT32(5)
45#define STM32F4_I2C_CR1_ENARP BSP_BIT32(4)
46#define STM32F4_I2C_CR1_SMBTYPE BSP_BIT32(3)
47#define STM32F4_I2C_CR1_SMBUS BSP_BIT32(1)
48#define STM32F4_I2C_CR1_PE BSP_BIT32(0)
49        uint32_t cr2;
50#define STM32F4_I2C_CR2_LAST BSP_BIT32(12)
51#define STM32F4_I2C_CR2_DMAEN BSP_BIT32(11)
52#define STM32F4_I2C_CR2_ITBUFEN BSP_BIT32(10)
53#define STM32F4_I2C_CR2_ITEVTEN BSP_BIT32(9)
54#define STM32F4_I2C_CR2_ITERREN BSP_BIT32(8)
55#define STM32F4_I2C_CR2_FREQ(val) BSP_FLD32(val, 0, 5)
56#define STM32F4_I2C_CR2_FREQ_GET(reg) BSP_FLD32GET(reg, 0, 5)
57#define STM32F4_I2C_CR2_FREQ_SET(reg, val) BSP_FLD32SET(reg, val, 0, 5)
58        uint32_t oar1;
59#define STM32F4_I2C_OAR1_ADDMODE BSP_BIT32(15)
60#define STM32F4_I2C_OAR1_ADD(val) BSP_FLD32(val, 0, 9)
61#define STM32F4_I2C_OAR1_ADD_GET(reg) BSP_FLD32GET(reg, 0, 9)
62#define STM32F4_I2C_OAR1_ADD_SET(reg, val) BSP_FLD32SET(reg, val, 0, 9)
63        uint32_t oar2;
64#define STM32F4_I2C_OAR2_ADD2(val) BSP_FLD32(val, 1, 7)
65#define STM32F4_I2C_OAR2_ADD2_GET(reg) BSP_FLD32GET(reg, 1, 7)
66#define STM32F4_I2C_OAR2_ADD2_SET(reg, val) BSP_FLD32SET(reg, val, 1, 7)
67#define STM32F4_I2C_OAR2_ENDUAL BSP_BIT32(0)
68        uint32_t dr;
69#define STM32F4_I2C_DR(val) BSP_FLD32(val, 0, 7)
70#define STM32F4_I2C_DR_GET(reg) BSP_FLD32GET(reg, 0, 7)
71#define STM32F4_I2C_DR_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)
72        uint32_t sr1;
73#define STM32F4_I2C_SR1_SMBALERT BSP_BIT32(15)
74#define STM32F4_I2C_SR1_TIMEOUT BSP_BIT32(14)
75#define STM32F4_I2C_SR1_PECERR BSP_BIT32(12)
76#define STM32F4_I2C_SR1_OVR BSP_BIT32(11)
77#define STM32F4_I2C_SR1_AF BSP_BIT32(10)
78#define STM32F4_I2C_SR1_ARLO BSP_BIT32(9)
79#define STM32F4_I2C_SR1_BERR BSP_BIT32(8)
80#define STM32F4_I2C_SR1_TxE BSP_BIT32(7)
81#define STM32F4_I2C_SR1_RxNE BSP_BIT32(6)
82#define STM32F4_I2C_SR1_STOPF BSP_BIT32(4)
83#define STM32F4_I2C_SR1_ADD10 BSP_BIT32(3)
84#define STM32F4_I2C_SR1_BTF BSP_BIT32(2)
85#define STM32F4_I2C_SR1_ADDR BSP_BIT32(1)
86#define STM32F4_I2C_SR1_SB BSP_BIT32(0)
87        uint32_t sr2;
88#define STM32F4_I2C_SR2_PEC(val) BSP_FLD32(val, 8, 15)
89#define STM32F4_I2C_SR2_PEC_GET(reg) BSP_FLD32GET(reg, 8, 15)
90#define STM32F4_I2C_SR2_PEC_SET(reg, val) BSP_FLD32SET(reg, val, 8, 15)
91#define STM32F4_I2C_SR2_DUALF BSP_BIT32(7)
92#define STM32F4_I2C_SR2_SMBHOST BSP_BIT32(6)
93#define STM32F4_I2C_SR2_SMBDEFAULT BSP_BIT32(5)
94#define STM32F4_I2C_SR2_GENCALL BSP_BIT32(4)
95#define STM32F4_I2C_SR2_TRA BSP_BIT32(2)
96#define STM32F4_I2C_SR2_BUSY BSP_BIT32(1)
97#define STM32F4_I2C_SR2_MSL BSP_BIT32(0)
98        uint32_t ccr;
99#define STM32F4_I2C_CCR_FS BSP_BIT32(15)
100#define STM32F4_I2C_CCR_DUTY BSP_BIT32(14)
101#define STM32F4_I2C_CCR_CCR(val) BSP_FLD32(val, 0, 11)
102#define STM32F4_I2C_CCR_CCR_GET(reg) BSP_FLD32GET(reg, 0, 11)
103#define STM32F4_I2C_CCR_CCR_SET(reg, val) BSP_FLD32SET(reg, val, 0, 11)
104#define STM32F4_I2C_CCR_CCR_MAX STM32F4_I2C_CCR_CCR_GET(BSP_MSK32(0, 11))
105        uint32_t trise;
106#define STM32F4_I2C_TRISE(val) BSP_FLD32(val, 0, 5)
107#define STM32F4_I2C_TRISE_GET(reg) BSP_FLD32GET(reg, 0, 5)
108#define STM32F4_I2C_TRISE_SET(reg, val) BSP_FLD32SET(reg, val, 0, 5)
109} stm32f4_i2c;
110
111/** @} */
112
113#endif /* LIBBSP_ARM_STM32F4_STM32_I2C_H */
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