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.
Diff: TARGET_NUCLEO_H743ZI/TOOLCHAIN_ARM_MICRO/i2c_device.h
- Revision:
- 172:65be27845400
diff -r 3a7713b1edbc -r 65be27845400 TARGET_NUCLEO_H743ZI/TOOLCHAIN_ARM_MICRO/i2c_device.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NUCLEO_H743ZI/TOOLCHAIN_ARM_MICRO/i2c_device.h Wed Feb 20 20:53:29 2019 +0000 @@ -0,0 +1,87 @@ +/* mbed Microcontroller Library + ******************************************************************************* + * Copyright (c) 2015, STMicroelectronics + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + ******************************************************************************* + */ +#ifndef MBED_I2C_DEVICE_H +#define MBED_I2C_DEVICE_H + +#include "cmsis.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if DEVICE_I2C + +#define I2C_IP_VERSION_V2 + +#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) + +/* Family specifc settings for clock source */ +#define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_D2PCLK1 +#define I2CAPI_I2C2_CLKSRC RCC_I2C2CLKSOURCE_D2PCLK1 +#define I2CAPI_I2C3_CLKSRC RCC_I2C3CLKSOURCE_D2PCLK1 +#define I2CAPI_I2C4_CLKSRC RCC_I2C4CLKSOURCE_D3PCLK1 + +/* Provide the suitable timing depending on requested frequencie */ +static inline uint32_t get_i2c_timing(int hz) +{ + uint32_t tim = 0; + /* + Values calculated with I2C_Timing_Configuration tool (excel file) + * Standard mode (up to 100 kHz) + * Fast Mode (up to 400 kHz) + * Fast Mode Plus (up to 1 MHz) + Below values obtained with: + - I2Cx clock source = APB1CLK = 54 MHz + - Analog filter delay = ON + - Digital filter coefficient = 0 + */ + switch (hz) { + case 100000: + tim = 0x10916998; // Standard mode with Rise time = 120ns, Fall time = 120ns + break; + case 400000: + tim = 0x00B11B54; // Fast Mode with Rise time = 120ns, Fall time = 120ns + break; + case 1000000: + tim = 0x0090091B; // Fast Mode Plus with Rise time = 120ns, Fall time = 10ns + break; + default: + break; + } + return tim; +} + +#ifdef __cplusplus +} +#endif + +#endif // DEVICE_I2C + +#endif