c7c90f47b0
This fixes SPI with PSRAM allocated buffers. DMA with SPI2 was attempted but produced junk output. This manual copy is less than 2x slower than DMA when not interrupted. Fixes #3339
59 lines
2.1 KiB
C
59 lines
2.1 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) 2016 Scott Shawcroft
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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_ESP32S2_COMMON_HAL_BUSIO_SPI_H
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#define MICROPY_INCLUDED_ESP32S2_COMMON_HAL_BUSIO_SPI_H
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#include "common-hal/microcontroller/Pin.h"
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#include "esp-idf/components/driver/include/driver/spi_common_internal.h"
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#include "esp-idf/components/soc/include/hal/spi_hal.h"
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#include "esp-idf/components/soc/include/hal/spi_types.h"
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#include "py/obj.h"
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typedef struct {
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mp_obj_base_t base;
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const mcu_pin_obj_t* clock_pin;
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const mcu_pin_obj_t* MOSI_pin;
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const mcu_pin_obj_t* MISO_pin;
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spi_host_device_t host_id;
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spi_bus_lock_dev_handle_t lock;
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spi_hal_context_t hal_context;
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spi_hal_timing_conf_t timing_conf;
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intr_handle_t interrupt;
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uint32_t target_frequency;
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int32_t real_frequency;
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uint8_t polarity;
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uint8_t phase;
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uint8_t bits;
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bool has_lock;
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bool connected_through_gpio;
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} busio_spi_obj_t;
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void spi_reset(void);
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#endif // MICROPY_INCLUDED_ESP32S2_COMMON_HAL_BUSIO_SPI_H
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