56d2b47370
So they can be reused by the I2CTarget implementation. Signed-off-by: Damien George <damien@micropython.org>
68 lines
2.4 KiB
C
68 lines
2.4 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) 2020-2025 Damien P. George
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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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#ifndef MICROPY_INCLUDED_RP2_MACHINE_I2C_H
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#define MICROPY_INCLUDED_RP2_MACHINE_I2C_H
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#ifdef MICROPY_HW_I2C_NO_DEFAULT_PINS
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// With no default I2C, need to require the pin args.
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#define MICROPY_HW_I2C0_SCL (0)
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#define MICROPY_HW_I2C0_SDA (0)
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#define MICROPY_HW_I2C1_SCL (0)
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#define MICROPY_HW_I2C1_SDA (0)
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#define MICROPY_I2C_PINS_ARG_OPTS MP_ARG_REQUIRED
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#else
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// Most boards do not require pin args.
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#define MICROPY_I2C_PINS_ARG_OPTS 0
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#ifndef MICROPY_HW_I2C0_SCL
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#if PICO_DEFAULT_I2C == 0
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#define MICROPY_HW_I2C0_SCL (PICO_DEFAULT_I2C_SCL_PIN)
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#define MICROPY_HW_I2C0_SDA (PICO_DEFAULT_I2C_SDA_PIN)
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#else
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#define MICROPY_HW_I2C0_SCL (9)
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#define MICROPY_HW_I2C0_SDA (8)
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#endif
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#endif
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#ifndef MICROPY_HW_I2C1_SCL
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#if PICO_DEFAULT_I2C == 1
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#define MICROPY_HW_I2C1_SCL (PICO_DEFAULT_I2C_SCL_PIN)
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#define MICROPY_HW_I2C1_SDA (PICO_DEFAULT_I2C_SDA_PIN)
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#else
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#define MICROPY_HW_I2C1_SCL (7)
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#define MICROPY_HW_I2C1_SDA (6)
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#endif
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#endif
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#endif
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// SDA/SCL on even/odd pins, I2C0/I2C1 on even/odd pairs of pins.
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#define IS_VALID_SCL(i2c, pin) (((pin) & 1) == 1 && (((pin) & 2) >> 1) == (i2c))
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#define IS_VALID_SDA(i2c, pin) (((pin) & 1) == 0 && (((pin) & 2) >> 1) == (i2c))
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#endif // MICROPY_INCLUDED_RP2_MACHINE_I2C_H
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