The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
Dependents: hello SerialTestv11 SerialTestv12 Sierpinski ... more
mbed 2
This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.
TARGET_DISCO_F769NI/TOOLCHAIN_ARM_STD/i2c_device.h@171:3a7713b1edbc, 2018-11-08 (annotated)
- Committer:
- AnnaBridge
- Date:
- Thu Nov 08 11:45:42 2018 +0000
- Revision:
- 171:3a7713b1edbc
- Child:
- 172:65be27845400
mbed library. Release version 164
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AnnaBridge | 171:3a7713b1edbc | 1 | /* mbed Microcontroller Library |
AnnaBridge | 171:3a7713b1edbc | 2 | ******************************************************************************* |
AnnaBridge | 171:3a7713b1edbc | 3 | * Copyright (c) 2015, STMicroelectronics |
AnnaBridge | 171:3a7713b1edbc | 4 | * All rights reserved. |
AnnaBridge | 171:3a7713b1edbc | 5 | * |
AnnaBridge | 171:3a7713b1edbc | 6 | * Redistribution and use in source and binary forms, with or without |
AnnaBridge | 171:3a7713b1edbc | 7 | * modification, are permitted provided that the following conditions are met: |
AnnaBridge | 171:3a7713b1edbc | 8 | * |
AnnaBridge | 171:3a7713b1edbc | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
AnnaBridge | 171:3a7713b1edbc | 10 | * this list of conditions and the following disclaimer. |
AnnaBridge | 171:3a7713b1edbc | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
AnnaBridge | 171:3a7713b1edbc | 12 | * this list of conditions and the following disclaimer in the documentation |
AnnaBridge | 171:3a7713b1edbc | 13 | * and/or other materials provided with the distribution. |
AnnaBridge | 171:3a7713b1edbc | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
AnnaBridge | 171:3a7713b1edbc | 15 | * may be used to endorse or promote products derived from this software |
AnnaBridge | 171:3a7713b1edbc | 16 | * without specific prior written permission. |
AnnaBridge | 171:3a7713b1edbc | 17 | * |
AnnaBridge | 171:3a7713b1edbc | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
AnnaBridge | 171:3a7713b1edbc | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
AnnaBridge | 171:3a7713b1edbc | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
AnnaBridge | 171:3a7713b1edbc | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
AnnaBridge | 171:3a7713b1edbc | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
AnnaBridge | 171:3a7713b1edbc | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
AnnaBridge | 171:3a7713b1edbc | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
AnnaBridge | 171:3a7713b1edbc | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
AnnaBridge | 171:3a7713b1edbc | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
AnnaBridge | 171:3a7713b1edbc | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
AnnaBridge | 171:3a7713b1edbc | 28 | ******************************************************************************* |
AnnaBridge | 171:3a7713b1edbc | 29 | */ |
AnnaBridge | 171:3a7713b1edbc | 30 | #ifndef MBED_I2C_DEVICE_H |
AnnaBridge | 171:3a7713b1edbc | 31 | #define MBED_I2C_DEVICE_H |
AnnaBridge | 171:3a7713b1edbc | 32 | |
AnnaBridge | 171:3a7713b1edbc | 33 | #include "cmsis.h" |
AnnaBridge | 171:3a7713b1edbc | 34 | |
AnnaBridge | 171:3a7713b1edbc | 35 | #ifdef __cplusplus |
AnnaBridge | 171:3a7713b1edbc | 36 | extern "C" { |
AnnaBridge | 171:3a7713b1edbc | 37 | #endif |
AnnaBridge | 171:3a7713b1edbc | 38 | |
AnnaBridge | 171:3a7713b1edbc | 39 | #ifdef DEVICE_I2C |
AnnaBridge | 171:3a7713b1edbc | 40 | |
AnnaBridge | 171:3a7713b1edbc | 41 | #define I2C_IP_VERSION_V2 |
AnnaBridge | 171:3a7713b1edbc | 42 | |
AnnaBridge | 171:3a7713b1edbc | 43 | #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 | 171:3a7713b1edbc | 44 | |
AnnaBridge | 171:3a7713b1edbc | 45 | /* Family specifc settings for clock source */ |
AnnaBridge | 171:3a7713b1edbc | 46 | #define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_PCLK1 |
AnnaBridge | 171:3a7713b1edbc | 47 | #define I2CAPI_I2C2_CLKSRC RCC_I2C2CLKSOURCE_PCLK1 |
AnnaBridge | 171:3a7713b1edbc | 48 | #define I2CAPI_I2C3_CLKSRC RCC_I2C3CLKSOURCE_PCLK1 |
AnnaBridge | 171:3a7713b1edbc | 49 | #define I2CAPI_I2C4_CLKSRC RCC_I2C4CLKSOURCE_PCLK1 |
AnnaBridge | 171:3a7713b1edbc | 50 | |
AnnaBridge | 171:3a7713b1edbc | 51 | /* Provide the suitable timing depending on requested frequencie */ |
AnnaBridge | 171:3a7713b1edbc | 52 | static inline uint32_t get_i2c_timing(int hz) |
AnnaBridge | 171:3a7713b1edbc | 53 | { |
AnnaBridge | 171:3a7713b1edbc | 54 | uint32_t tim = 0; |
AnnaBridge | 171:3a7713b1edbc | 55 | /* |
AnnaBridge | 171:3a7713b1edbc | 56 | Values calculated with I2C_Timing_Configuration tool (excel file) |
AnnaBridge | 171:3a7713b1edbc | 57 | * Standard mode (up to 100 kHz) |
AnnaBridge | 171:3a7713b1edbc | 58 | * Fast Mode (up to 400 kHz) |
AnnaBridge | 171:3a7713b1edbc | 59 | * Fast Mode Plus (up to 1 MHz) |
AnnaBridge | 171:3a7713b1edbc | 60 | Below values obtained with: |
AnnaBridge | 171:3a7713b1edbc | 61 | - I2Cx clock source = APB1CLK = 54 MHz |
AnnaBridge | 171:3a7713b1edbc | 62 | - Analog filter delay = ON |
AnnaBridge | 171:3a7713b1edbc | 63 | - Digital filter coefficient = 0 |
AnnaBridge | 171:3a7713b1edbc | 64 | */ |
AnnaBridge | 171:3a7713b1edbc | 65 | switch (hz) { |
AnnaBridge | 171:3a7713b1edbc | 66 | case 100000: |
AnnaBridge | 171:3a7713b1edbc | 67 | tim = 0x10916998; // Standard mode with Rise time = 120ns, Fall time = 120ns |
AnnaBridge | 171:3a7713b1edbc | 68 | break; |
AnnaBridge | 171:3a7713b1edbc | 69 | case 400000: |
AnnaBridge | 171:3a7713b1edbc | 70 | tim = 0x00B11B54; // Fast Mode with Rise time = 120ns, Fall time = 120ns |
AnnaBridge | 171:3a7713b1edbc | 71 | break; |
AnnaBridge | 171:3a7713b1edbc | 72 | case 1000000: |
AnnaBridge | 171:3a7713b1edbc | 73 | tim = 0x0090091B; // Fast Mode Plus with Rise time = 120ns, Fall time = 10ns |
AnnaBridge | 171:3a7713b1edbc | 74 | break; |
AnnaBridge | 171:3a7713b1edbc | 75 | default: |
AnnaBridge | 171:3a7713b1edbc | 76 | break; |
AnnaBridge | 171:3a7713b1edbc | 77 | } |
AnnaBridge | 171:3a7713b1edbc | 78 | return tim; |
AnnaBridge | 171:3a7713b1edbc | 79 | } |
AnnaBridge | 171:3a7713b1edbc | 80 | |
AnnaBridge | 171:3a7713b1edbc | 81 | #ifdef __cplusplus |
AnnaBridge | 171:3a7713b1edbc | 82 | } |
AnnaBridge | 171:3a7713b1edbc | 83 | #endif |
AnnaBridge | 171:3a7713b1edbc | 84 | |
AnnaBridge | 171:3a7713b1edbc | 85 | #endif // DEVICE_I2C |
AnnaBridge | 171:3a7713b1edbc | 86 | |
AnnaBridge | 171:3a7713b1edbc | 87 | #endif |