The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
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mbed 2
This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.
TARGET_NUCLEO_F031K6/TARGET_STM/TARGET_STM32F0/i2c_device.h@169:a7c7b631e539, 2018-06-22 (annotated)
- Committer:
- Anna Bridge
- Date:
- Fri Jun 22 15:38:59 2018 +0100
- Revision:
- 169:a7c7b631e539
- Parent:
- 156:ff21514d8981
mbed library. Release version 162
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AnnaBridge | 156:ff21514d8981 | 1 | /* mbed Microcontroller Library |
AnnaBridge | 156:ff21514d8981 | 2 | ******************************************************************************* |
AnnaBridge | 156:ff21514d8981 | 3 | * Copyright (c) 2015, STMicroelectronics |
AnnaBridge | 156:ff21514d8981 | 4 | * All rights reserved. |
AnnaBridge | 156:ff21514d8981 | 5 | * |
AnnaBridge | 156:ff21514d8981 | 6 | * Redistribution and use in source and binary forms, with or without |
AnnaBridge | 156:ff21514d8981 | 7 | * modification, are permitted provided that the following conditions are met: |
AnnaBridge | 156:ff21514d8981 | 8 | * |
AnnaBridge | 156:ff21514d8981 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
AnnaBridge | 156:ff21514d8981 | 10 | * this list of conditions and the following disclaimer. |
AnnaBridge | 156:ff21514d8981 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
AnnaBridge | 156:ff21514d8981 | 12 | * this list of conditions and the following disclaimer in the documentation |
AnnaBridge | 156:ff21514d8981 | 13 | * and/or other materials provided with the distribution. |
AnnaBridge | 156:ff21514d8981 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
AnnaBridge | 156:ff21514d8981 | 15 | * may be used to endorse or promote products derived from this software |
AnnaBridge | 156:ff21514d8981 | 16 | * without specific prior written permission. |
AnnaBridge | 156:ff21514d8981 | 17 | * |
AnnaBridge | 156:ff21514d8981 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
AnnaBridge | 156:ff21514d8981 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
AnnaBridge | 156:ff21514d8981 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
AnnaBridge | 156:ff21514d8981 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
AnnaBridge | 156:ff21514d8981 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
AnnaBridge | 156:ff21514d8981 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
AnnaBridge | 156:ff21514d8981 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
AnnaBridge | 156:ff21514d8981 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
AnnaBridge | 156:ff21514d8981 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
AnnaBridge | 156:ff21514d8981 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
AnnaBridge | 156:ff21514d8981 | 28 | ******************************************************************************* |
AnnaBridge | 156:ff21514d8981 | 29 | */ |
AnnaBridge | 156:ff21514d8981 | 30 | #ifndef MBED_I2C_DEVICE_H |
AnnaBridge | 156:ff21514d8981 | 31 | #define MBED_I2C_DEVICE_H |
AnnaBridge | 156:ff21514d8981 | 32 | |
AnnaBridge | 156:ff21514d8981 | 33 | #include "cmsis.h" |
AnnaBridge | 156:ff21514d8981 | 34 | |
AnnaBridge | 156:ff21514d8981 | 35 | #ifdef __cplusplus |
AnnaBridge | 156:ff21514d8981 | 36 | extern "C" { |
AnnaBridge | 156:ff21514d8981 | 37 | #endif |
AnnaBridge | 156:ff21514d8981 | 38 | |
AnnaBridge | 156:ff21514d8981 | 39 | #ifdef DEVICE_I2C |
AnnaBridge | 156:ff21514d8981 | 40 | |
AnnaBridge | 156:ff21514d8981 | 41 | #if defined I2C1_BASE |
AnnaBridge | 156:ff21514d8981 | 42 | #define I2C1_EV_IRQn I2C1_IRQn |
AnnaBridge | 156:ff21514d8981 | 43 | #define I2C1_ER_IRQn I2C1_IRQn |
AnnaBridge | 156:ff21514d8981 | 44 | #endif |
AnnaBridge | 156:ff21514d8981 | 45 | #if defined I2C2_BASE |
AnnaBridge | 156:ff21514d8981 | 46 | #define I2C2_EV_IRQn I2C2_IRQn |
AnnaBridge | 156:ff21514d8981 | 47 | #define I2C2_ER_IRQn I2C2_IRQn |
AnnaBridge | 156:ff21514d8981 | 48 | #endif |
AnnaBridge | 156:ff21514d8981 | 49 | #if defined I2C3_BASE |
AnnaBridge | 156:ff21514d8981 | 50 | #define I2C3_EV_IRQn I2C3_IRQn |
AnnaBridge | 156:ff21514d8981 | 51 | #define I2C3_ER_IRQn I2C3_IRQn |
AnnaBridge | 156:ff21514d8981 | 52 | #endif |
AnnaBridge | 156:ff21514d8981 | 53 | |
AnnaBridge | 156:ff21514d8981 | 54 | #define I2C_IT_ALL (I2C_IT_ERRI|I2C_IT_TCI|I2C_IT_STOPI|I2C_IT_NACKI|I2C_IT_ADDRI|I2C_IT_RXI|I2C_IT_TXI) |
AnnaBridge | 156:ff21514d8981 | 55 | |
AnnaBridge | 156:ff21514d8981 | 56 | |
AnnaBridge | 156:ff21514d8981 | 57 | /* Define IP version */ |
AnnaBridge | 156:ff21514d8981 | 58 | #define I2C_IP_VERSION_V2 |
AnnaBridge | 156:ff21514d8981 | 59 | |
AnnaBridge | 156:ff21514d8981 | 60 | /* Family specifc settings for clock source */ |
AnnaBridge | 156:ff21514d8981 | 61 | #define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_SYSCLK |
AnnaBridge | 156:ff21514d8981 | 62 | |
AnnaBridge | 156:ff21514d8981 | 63 | /* Provide the suitable timing depending on requested frequencie */ |
AnnaBridge | 156:ff21514d8981 | 64 | static inline uint32_t get_i2c_timing(int hz) |
AnnaBridge | 156:ff21514d8981 | 65 | { |
AnnaBridge | 156:ff21514d8981 | 66 | uint32_t tim = 0; |
AnnaBridge | 156:ff21514d8981 | 67 | |
AnnaBridge | 156:ff21514d8981 | 68 | switch (hz) { |
AnnaBridge | 156:ff21514d8981 | 69 | case 100000: |
AnnaBridge | 156:ff21514d8981 | 70 | tim = 0x10805E89; // Standard mode with Rise Time = 400ns and Fall Time = 100ns |
AnnaBridge | 156:ff21514d8981 | 71 | break; |
AnnaBridge | 156:ff21514d8981 | 72 | case 400000: |
AnnaBridge | 156:ff21514d8981 | 73 | tim = 0x00901850; // Fast mode with Rise Time = 250ns and Fall Time = 100ns |
AnnaBridge | 156:ff21514d8981 | 74 | break; |
AnnaBridge | 156:ff21514d8981 | 75 | case 1000000: |
AnnaBridge | 156:ff21514d8981 | 76 | tim = 0x00700818; // Fast mode Plus with Rise Time = 60ns and Fall Time = 100ns |
AnnaBridge | 156:ff21514d8981 | 77 | break; |
AnnaBridge | 156:ff21514d8981 | 78 | default: |
AnnaBridge | 156:ff21514d8981 | 79 | break; |
AnnaBridge | 156:ff21514d8981 | 80 | } |
AnnaBridge | 156:ff21514d8981 | 81 | return tim; |
AnnaBridge | 156:ff21514d8981 | 82 | } |
AnnaBridge | 156:ff21514d8981 | 83 | |
AnnaBridge | 156:ff21514d8981 | 84 | #endif // DEVICE_I2C |
AnnaBridge | 156:ff21514d8981 | 85 | |
AnnaBridge | 156:ff21514d8981 | 86 | #endif |