5c78762c16
The functionality is similar to the RP2 implementation. The supported address size is 7 bit. In order to achieve a sufficient response, the target I2C IRQ handler has to run from RAM, causing much more code moved to RAM than required. Tested with Teensy 4.1, MIMXRT1021EVK, MIMXRT1011EVK and MIMXRT1170, using both a On-Board SoftI2C as controller and a RP2 Pico as external controller. Signed-off-by: Damien George <damien@micropython.org> Signed-off-by: robert-hh <robert@hammelrath.com>
38 lines
1.7 KiB
C
38 lines
1.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2025 Damien P. George
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* Copyright (c) 2025 Robert Hammelrath
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#define DEFAULT_I2C_ID (0)
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#define DEFAULT_I2C_FREQ (400000)
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#define DEFAULT_I2C_DRIVE (6)
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#define DEFAULT_I2C_TIMEOUT (50000)
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#define DEFAULT_I2C_FILTER_NS (200)
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#define MICROPY_HW_I2C_NUM ARRAY_SIZE(i2c_index_table)
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extern const uint8_t i2c_index_table[];
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extern LPI2C_Type *i2c_base_ptr_table[];
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extern bool lpi2c_set_iomux(int8_t hw_i2c, uint8_t drive);
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extern const uint8_t micropy_hw_i2c_num;
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