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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_L011K4/TOOLCHAIN_ARM_MICRO/i2c_device.h@171:3a7713b1edbc, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:45:42 2018 +0000
Revision:
171:3a7713b1edbc
Parent:
TARGET_DISCO_L072CZ_LRWAN1/TARGET_STM/TARGET_STM32L0/i2c_device.h@170:e95d10626187
Child:
172:65be27845400
mbed library. Release version 164

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 143:86740a56073b 1 /* mbed Microcontroller Library
AnnaBridge 143:86740a56073b 2 *******************************************************************************
AnnaBridge 143:86740a56073b 3 * Copyright (c) 2015, STMicroelectronics
AnnaBridge 143:86740a56073b 4 * All rights reserved.
AnnaBridge 143:86740a56073b 5 *
AnnaBridge 143:86740a56073b 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 143:86740a56073b 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 143:86740a56073b 8 *
AnnaBridge 143:86740a56073b 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 143:86740a56073b 10 * this list of conditions and the following disclaimer.
AnnaBridge 143:86740a56073b 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 143:86740a56073b 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 143:86740a56073b 13 * and/or other materials provided with the distribution.
AnnaBridge 143:86740a56073b 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 143:86740a56073b 15 * may be used to endorse or promote products derived from this software
AnnaBridge 143:86740a56073b 16 * without specific prior written permission.
AnnaBridge 143:86740a56073b 17 *
AnnaBridge 143:86740a56073b 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 143:86740a56073b 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 143:86740a56073b 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 143:86740a56073b 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 143:86740a56073b 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 143:86740a56073b 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 143:86740a56073b 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 143:86740a56073b 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 143:86740a56073b 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 143:86740a56073b 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 143:86740a56073b 28 *******************************************************************************
AnnaBridge 143:86740a56073b 29 */
AnnaBridge 143:86740a56073b 30 #ifndef MBED_I2C_DEVICE_H
AnnaBridge 143:86740a56073b 31 #define MBED_I2C_DEVICE_H
AnnaBridge 143:86740a56073b 32
AnnaBridge 143:86740a56073b 33 #include "cmsis.h"
AnnaBridge 143:86740a56073b 34
AnnaBridge 143:86740a56073b 35 #ifdef __cplusplus
AnnaBridge 143:86740a56073b 36 extern "C" {
AnnaBridge 143:86740a56073b 37 #endif
AnnaBridge 143:86740a56073b 38
AnnaBridge 143:86740a56073b 39 #ifdef DEVICE_I2C
AnnaBridge 143:86740a56073b 40
AnnaBridge 143:86740a56073b 41 #define I2C_IP_VERSION_V2
AnnaBridge 143:86740a56073b 42
AnnaBridge 143:86740a56073b 43 #if defined I2C1_BASE
AnnaBridge 143:86740a56073b 44 #define I2C1_EV_IRQn I2C1_IRQn
AnnaBridge 143:86740a56073b 45 #define I2C1_ER_IRQn I2C1_IRQn
AnnaBridge 143:86740a56073b 46 #endif
AnnaBridge 143:86740a56073b 47 #if defined I2C2_BASE
AnnaBridge 143:86740a56073b 48 #define I2C2_EV_IRQn I2C2_IRQn
AnnaBridge 143:86740a56073b 49 #define I2C2_ER_IRQn I2C2_IRQn
AnnaBridge 143:86740a56073b 50 #endif
AnnaBridge 143:86740a56073b 51 #if defined I2C3_BASE
AnnaBridge 143:86740a56073b 52 #define I2C3_EV_IRQn I2C3_IRQn
AnnaBridge 143:86740a56073b 53 #define I2C3_ER_IRQn I2C3_IRQn
AnnaBridge 143:86740a56073b 54 #endif
AnnaBridge 143:86740a56073b 55
AnnaBridge 143:86740a56073b 56 #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 143:86740a56073b 57
AnnaBridge 143:86740a56073b 58 /* Family specifc settings for clock source */
AnnaBridge 143:86740a56073b 59 #define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_SYSCLK
AnnaBridge 143:86740a56073b 60 #define I2CAPI_I2C3_CLKSRC RCC_I2C3CLKSOURCE_SYSCLK
AnnaBridge 143:86740a56073b 61 #define I2CAPI_I2C4_CLKSRC RCC_I2C4CLKSOURCE_SYSCLK
AnnaBridge 143:86740a56073b 62
AnnaBridge 143:86740a56073b 63 /* Provide the suitable timing depending on requested frequencie */
AnnaBridge 143:86740a56073b 64 static inline uint32_t get_i2c_timing(int hz)
AnnaBridge 143:86740a56073b 65 {
AnnaBridge 143:86740a56073b 66 uint32_t tim = 0;
AnnaBridge 143:86740a56073b 67
AnnaBridge 143:86740a56073b 68 switch (hz) {
AnnaBridge 143:86740a56073b 69 case 100000:
AnnaBridge 143:86740a56073b 70 tim = 0x20602938; // Standard mode with Rise Time = 400ns and Fall Time = 100ns
AnnaBridge 170:e95d10626187 71 break;
AnnaBridge 143:86740a56073b 72 case 400000:
AnnaBridge 170:e95d10626187 73 tim = 0x00B0122A; // Fast mode with Rise Time = 250ns and Fall Time = 100ns
AnnaBridge 143:86740a56073b 74 break;
AnnaBridge 143:86740a56073b 75 case 1000000:
AnnaBridge 143:86740a56073b 76 tim = 0x0030040E; // Fast mode Plus with Rise Time = 60ns and Fall Time = 100ns
AnnaBridge 143:86740a56073b 77 break;
AnnaBridge 143:86740a56073b 78 default:
AnnaBridge 143:86740a56073b 79 break;
AnnaBridge 143:86740a56073b 80 }
AnnaBridge 143:86740a56073b 81 return tim;
AnnaBridge 143:86740a56073b 82 }
AnnaBridge 143:86740a56073b 83
AnnaBridge 143:86740a56073b 84 #ifdef __cplusplus
AnnaBridge 143:86740a56073b 85 }
AnnaBridge 143:86740a56073b 86 #endif
AnnaBridge 143:86740a56073b 87
AnnaBridge 143:86740a56073b 88 #endif // DEVICE_I2C
AnnaBridge 143:86740a56073b 89
AnnaBridge 143:86740a56073b 90 #endif