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11f057dd9a
Performs a best-effort attempt to detect attached PSRAM, configure it and *add* it to the MicroPython heap. If PSRAM is not present, should fall back to use internal RAM. Introduce two new port/board defines: - MICROPY_HW_ENABLE_PSRAM to enable PSRAM. - MICROPY_HW_PSRAM_CS_PIN to define the chip-select pin (required). Changes are: - ports/rp2/rp2_psram.[ch]: Add new PSRAM module. - ports/rp2/main.c: Add optional PSRAM support. - ports/rp2/CMakeLists.txt: Include rp2_psram.c. - ports/rp2/mpconfigport.h: Add MICROPY_HW_ENABLE_PSRAM. - ports/rp2/modmachine.c: Reconfigure PSRAM on freq change. Co-authored-by: Kirk Benell <kirk.benell@sparkfun.com> Co-authored-by: Mike Bell <mike@mercuna.com> Signed-off-by: Phil Howard <phil@gadgetoid.com>
45 lines
1.6 KiB
C
45 lines
1.6 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 Phil Howard
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* Mike Bell
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* Kirk D. Benell
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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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#include "pico/stdlib.h"
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#ifndef MICROPY_INCLUDED_RP2_RP2_PSRAM_H
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#define MICROPY_INCLUDED_RP2_RP2_PSRAM_H
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#if MICROPY_HW_ENABLE_PSRAM
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#ifndef MICROPY_HW_PSRAM_CS_PIN
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#error "MICROPY_HW_ENABLE_PSRAM requires MICROPY_HW_PSRAM_CS_PIN"
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#endif
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#define PSRAM_BASE _u(0x11000000)
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extern size_t psram_init(uint cs_pin);
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#endif
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#endif
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