mbed official / mbed

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_NUCLEO_F302R8/TARGET_STM/TARGET_STM32F3/i2c_device.h@136:ef9c61f8c49f, 2017-02-14 (annotated)

Committer:
Kojto
Date:
Tue Feb 14 11:24:20 2017 +0000
Revision:
136:ef9c61f8c49f
Parent:
134:ad3be0349dc5 
Release 136 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3432: Target STM USBHOST support https://github.com/ARMmbed/mbed-os/pull/3432

3181: NUCLEO_F207ZG extending PeripheralPins.c: all available alternate functions can be used now https://github.com/ARMmbed/mbed-os/pull/3181

3626: NUCLEO_F412ZG : Add USB Device +Host https://github.com/ARMmbed/mbed-os/pull/3626

3628: Fix warnings https://github.com/ARMmbed/mbed-os/pull/3628

3629: STM32: L0 LL layer https://github.com/ARMmbed/mbed-os/pull/3629

3632: IDE Export support for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3632

3642: Missing IRQ pin fix for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3642

3664: Fix ncs36510 sleep definitions https://github.com/ARMmbed/mbed-os/pull/3664

3655: [STM32F4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3655

3657: [STM32L4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3657

3658: [STM32F3] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3658

3685: STM32: I2C: reset state machine https://github.com/ARMmbed/mbed-os/pull/3685

3692: uVisor: Standardize available legacy heap and stack https://github.com/ARMmbed/mbed-os/pull/3692

3621: Fix for #2884, LPC824: export to LPCXpresso, target running with wron https://github.com/ARMmbed/mbed-os/pull/3621

3649: [STM32F7] Modify folder structure  https://github.com/ARMmbed/mbed-os/pull/3649

3695: Enforce device_name is valid in targets.json https://github.com/ARMmbed/mbed-os/pull/3695

3723: NCS36510: spi_format function bug fix https://github.com/ARMmbed/mbed-os/pull/3723

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 #define I2C_IP_VERSION_V2
<> 132:9baf128c2fab 42
<> 132:9baf128c2fab 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)
<> 132:9baf128c2fab 44
<> 132:9baf128c2fab 45 /* Family specifc settings for clock source */
<> 132:9baf128c2fab 46 #define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_SYSCLK
<> 132:9baf128c2fab 47 #define I2CAPI_I2C2_CLKSRC RCC_I2C2CLKSOURCE_SYSCLK
<> 132:9baf128c2fab 48 #define I2CAPI_I2C3_CLKSRC RCC_I2C3CLKSOURCE_SYSCLK
<> 132:9baf128c2fab 49
<> 132:9baf128c2fab 50 /* Provide the suitable timing depending on requested frequencie */
<> 134:ad3be0349dc5 51 static inline uint32_t get_i2c_timing(int hz)
<> 132:9baf128c2fab 52 {
<> 132:9baf128c2fab 53 uint32_t tim = 0;
<> 132:9baf128c2fab 54 /*
<> 132:9baf128c2fab 55 Values calculated with I2C_Timing_Configuration_V1.0.1.xls file (see AN4235)
<> 132:9baf128c2fab 56 * Standard mode (up to 100 kHz)
<> 132:9baf128c2fab 57 * Fast Mode (up to 400 kHz)
<> 132:9baf128c2fab 58 * Fast Mode Plus (up to 1 MHz)
<> 132:9baf128c2fab 59 Below values obtained with:
<> 132:9baf128c2fab 60 - I2C clock source = 64 MHz (System Clock w/ HSI) or 72 (System Clock w/ HSE)
<> 132:9baf128c2fab 61 - Analog filter delay = ON
<> 132:9baf128c2fab 62 - Digital filter coefficient = 0
<> 132:9baf128c2fab 63 */
<> 132:9baf128c2fab 64 if (SystemCoreClock == 64000000) {
<> 132:9baf128c2fab 65 switch (hz) {
<> 132:9baf128c2fab 66 case 100000:
<> 132:9baf128c2fab 67 tim = 0x10B17DB4; // Standard mode with Rise time = 120ns, Fall time = 120ns
<> 132:9baf128c2fab 68 break;
<> 132:9baf128c2fab 69 case 400000:
<> 132:9baf128c2fab 70 tim = 0x00E22163; // Fast Mode with Rise time = 120ns, Fall time = 120ns
<> 132:9baf128c2fab 71 break;
<> 132:9baf128c2fab 72 case 1000000:
<> 132:9baf128c2fab 73 tim = 0x00A00D1E; // Fast Mode Plus with Rise time = 120ns, Fall time = 10ns
<> 132:9baf128c2fab 74 break;
<> 132:9baf128c2fab 75 default:
<> 132:9baf128c2fab 76 break;
<> 132:9baf128c2fab 77 }
<> 132:9baf128c2fab 78 } else if (SystemCoreClock == 72000000) {
<> 132:9baf128c2fab 79 switch (hz) {
<> 132:9baf128c2fab 80 case 100000:
<> 132:9baf128c2fab 81 tim = 0x10D28DCB; // Standard mode with Rise time = 120ns, Fall time = 120ns
<> 132:9baf128c2fab 82 break;
<> 132:9baf128c2fab 83 case 400000:
<> 132:9baf128c2fab 84 tim = 0x00F32571; // Fast Mode with Rise time = 120ns, Fall time = 120ns
<> 132:9baf128c2fab 85 break;
<> 132:9baf128c2fab 86 case 1000000:
<> 132:9baf128c2fab 87 tim = 0x00C00D24; // Fast Mode Plus with Rise time = 120ns, Fall time = 10ns
<> 132:9baf128c2fab 88 break;
<> 132:9baf128c2fab 89 default:
<> 132:9baf128c2fab 90 break;
<> 132:9baf128c2fab 91 }
<> 132:9baf128c2fab 92 }
<> 132:9baf128c2fab 93 return tim;
<> 132:9baf128c2fab 94 }
<> 132:9baf128c2fab 95
<> 132:9baf128c2fab 96 #ifdef __cplusplus
<> 132:9baf128c2fab 97 }
<> 132:9baf128c2fab 98 #endif
<> 132:9baf128c2fab 99
<> 132:9baf128c2fab 100 #endif // DEVICE_I2C
<> 132:9baf128c2fab 101
<> 132:9baf128c2fab 102 #endif