mirror of https://github.com/ARMmbed/mbed-os.git
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* mbed Microcontroller Library
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* SPDX-License-Identifier: BSD-3-Clause
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******************************************************************************
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*
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* Copyright (c) 2021 STMicroelectronics.
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* All rights reserved.
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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#ifndef MBED_I2C_DEVICE_H
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#define MBED_I2C_DEVICE_H
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#include "PeripheralNames.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Define I2C Device */
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#if DEVICE_I2C
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/* Define IP version */
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#define I2C_IP_VERSION_V2
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// Common settings: I2C clock = 48 MHz, Analog filter = ON, Digital filter coefficient = 0
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#define TIMING_VAL_48M_CLK_100KHZ 0x20E03F53 // Standard mode with Rise Time = 640ns and Fall Time = 20ns
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#define TIMING_VAL_48M_CLK_400KHZ 0x20500817 // Fast mode with Rise Time = 250ns and Fall Time = 100ns
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#define TIMING_VAL_48M_CLK_1MHZ 0x00500A18 // Fast mode Plus with Rise Time = 60ns and Fall Time = 100ns
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#define I2C_PCLK_48M 48000000 // 48 MHz
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#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)
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/* Family specific settings for clock source */
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#define I2CAPI_I2C1_CLKSRC RCC_I2C1CLKSOURCE_SYSCLK
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#define I2CAPI_I2C2_CLKSRC RCC_I2C2CLKSOURCE_SYSCLK
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#define I2CAPI_I2C3_CLKSRC RCC_I2C3CLKSOURCE_SYSCLK
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uint32_t i2c_get_pclk(I2CName i2c);
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uint32_t i2c_get_timing(I2CName i2c, uint32_t current_timing, int current_hz, int hz);
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#if MBED_CONF_TARGET_I2C_TIMING_VALUE_ALGO
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uint32_t i2c_compute_timing(uint32_t clock_src_freq, uint32_t i2c_freq);
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void i2c_compute_presc_scldel_sdadel(uint32_t clock_src_freq, uint32_t I2C_speed);
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uint32_t i2c_compute_scll_sclh(uint32_t clock_src_freq, uint32_t I2C_speed);
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#endif // MBED_CONF_TARGET_I2C_TIMING_VALUE_ALGO
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#endif // DEVICE_I2C
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#ifdef __cplusplus
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}
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#endif
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#endif
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