mirror of https://github.com/google/pebble
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <stdint.h>
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// This is always invalid because it includes a value being set in the reserved field.
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#define I2C_TIMINGR_INVALID_VALUE (0xffffffff)
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typedef enum I2CBusMode {
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I2CBusMode_Standard, ///< I2C Standard Mode (up to 100 kHz)
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I2CBusMode_FastMode, ///< I2C Fast Mode (up to 400 kHz)
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I2CBusMode_FastModePlus, ///< I2C Fast Mode Plus (up to 1 MHz)
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} I2CBusMode;
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uint32_t i2c_timingr_calculate(uint32_t i2c_clk_frequency,
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I2CBusMode bus_mode,
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uint32_t target_bus_frequency,
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uint32_t rise_time_ns,
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uint32_t fall_time_ns);
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