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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_F030R8/TARGET_STM/TARGET_STM32F0/i2c_device.h@143:86740a56073b, 2017-05-26 (annotated)

Committer:
AnnaBridge
Date:
Fri May 26 12:30:20 2017 +0100
Revision:
143:86740a56073b
Parent:
134:ad3be0349dc5 
Release 143 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 132:9baf128c2fab 1 /* mbed Microcontroller Library
<> 132:9baf128c2fab 2 *******************************************************************************
<> 132:9baf128c2fab 3 * Copyright (c) 2015, STMicroelectronics
<> 132:9baf128c2fab 4 * All rights reserved.
<> 132:9baf128c2fab 5 *
<> 132:9baf128c2fab 6 * Redistribution and use in source and binary forms, with or without
<> 132:9baf128c2fab 7 * modification, are permitted provided that the following conditions are met:
<> 132:9baf128c2fab 8 *
<> 132:9baf128c2fab 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 132:9baf128c2fab 10 * this list of conditions and the following disclaimer.
<> 132:9baf128c2fab 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 132:9baf128c2fab 12 * this list of conditions and the following disclaimer in the documentation
<> 132:9baf128c2fab 13 * and/or other materials provided with the distribution.
<> 132:9baf128c2fab 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 132:9baf128c2fab 15 * may be used to endorse or promote products derived from this software
<> 132:9baf128c2fab 16 * without specific prior written permission.
<> 132:9baf128c2fab 17 *
<> 132:9baf128c2fab 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 132:9baf128c2fab 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 132:9baf128c2fab 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 132:9baf128c2fab 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 132:9baf128c2fab 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 132:9baf128c2fab 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 132:9baf128c2fab 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 132:9baf128c2fab 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 132:9baf128c2fab 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 132:9baf128c2fab 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 132:9baf128c2fab 28 *******************************************************************************
<> 132:9baf128c2fab 29 */
<> 132:9baf128c2fab 30 #ifndef MBED_I2C_DEVICE_H
<> 132:9baf128c2fab 31 #define MBED_I2C_DEVICE_H
<> 132:9baf128c2fab 32
<> 132:9baf128c2fab 33 #include "cmsis.h"
<> 132:9baf128c2fab 34
<> 132:9baf128c2fab 35 #ifdef __cplusplus
<> 132:9baf128c2fab 36 extern "C" {
<> 132:9baf128c2fab 37 #endif
<> 132:9baf128c2fab 38
<> 132:9baf128c2fab 39 #ifdef DEVICE_I2C
<> 132:9baf128c2fab 40
<> 132:9baf128c2fab 41 #if defined I2C1_BASE
<> 132:9baf128c2fab 42 #define I2C1_EV_IRQn I2C1_IRQn
<> 132:9baf128c2fab 43 #define I2C1_ER_IRQn I2C1_IRQn
<> 132:9baf128c2fab 44 #endif
<> 132:9baf128c2fab 45 #if defined I2C2_BASE
<> 132:9baf128c2fab 46 #define I2C2_EV_IRQn I2C2_IRQn
<> 132:9baf128c2fab 47 #define I2C2_ER_IRQn I2C2_IRQn
<> 132:9baf128c2fab 48 #endif
<> 132:9baf128c2fab 49 #if defined I2C3_BASE
<> 132:9baf128c2fab 50 #define I2C3_EV_IRQn I2C3_IRQn
<> 132:9baf128c2fab 51 #define I2C3_ER_IRQn I2C3_IRQn
<> 132:9baf128c2fab 52 #endif
<> 132:9baf128c2fab 53
<> 132:9baf128c2fab 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)
<> 132:9baf128c2fab 55
<> 132:9baf128c2fab 56
<> 132:9baf128c2fab 57 /* Define IP version */
<> 132:9baf128c2fab 58 #define I2C_IP_VERSION_V2
<> 132:9baf128c2fab 59
<> 132:9baf128c2fab 60 /* Family specifc settings for clock source */
<> 132:9baf128c2fab 61 #define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_SYSCLK
<> 132:9baf128c2fab 62
<> 132:9baf128c2fab 63 /* Provide the suitable timing depending on requested frequencie */
<> 134:ad3be0349dc5 64 static inline uint32_t get_i2c_timing(int hz)
<> 132:9baf128c2fab 65 {
<> 132:9baf128c2fab 66 uint32_t tim = 0;
<> 132:9baf128c2fab 67
<> 132:9baf128c2fab 68 switch (hz) {
<> 132:9baf128c2fab 69 case 100000:
<> 132:9baf128c2fab 70 tim = 0x10805E89; // Standard mode with Rise Time = 400ns and Fall Time = 100ns
<> 132:9baf128c2fab 71 break;
<> 132:9baf128c2fab 72 case 400000:
<> 132:9baf128c2fab 73 tim = 0x00901850; // Fast mode with Rise Time = 250ns and Fall Time = 100ns
<> 132:9baf128c2fab 74 break;
<> 132:9baf128c2fab 75 case 1000000:
<> 132:9baf128c2fab 76 tim = 0x00700818; // Fast mode Plus with Rise Time = 60ns and Fall Time = 100ns
<> 132:9baf128c2fab 77 break;
<> 132:9baf128c2fab 78 default:
<> 132:9baf128c2fab 79 break;
<> 132:9baf128c2fab 80 }
<> 132:9baf128c2fab 81 return tim;
<> 132:9baf128c2fab 82 }
<> 132:9baf128c2fab 83
<> 132:9baf128c2fab 84 #endif // DEVICE_I2C
<> 132:9baf128c2fab 85
<> 132:9baf128c2fab 86 #endif