kopia lustrzana https://github.com/micropython/micropython
112 wiersze
3.6 KiB
C
112 wiersze
3.6 KiB
C
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/*
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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) 2021 Philipp Ebensberger
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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_MIMXRT_SDCARD_H
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#define MICROPY_INCLUDED_MIMXRT_SDCARD_H
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#include "modmachine.h"
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#include "pin.h"
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#include "fsl_usdhc.h"
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// ---
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// SD Card public defines
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// ---
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#define SDCARD_DEFAULT_BLOCK_SIZE (512U)
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#define SDCARD_CLOCK_400KHZ (400000U)
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#define SDCARD_CLOCK_25MHZ (25000000U)
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#define SDCARD_CLOCK_50MHZ (50000000U)
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typedef struct _mimxrt_sdcard_pin_t {
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const machine_pin_obj_t *pin;
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uint8_t af_idx;
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} mimxrt_sdcard_pin_t;
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typedef struct _mimxrt_sdcard_obj_pins_t {
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mimxrt_sdcard_pin_t cmd;
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mimxrt_sdcard_pin_t clk;
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mimxrt_sdcard_pin_t cd_b;
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mimxrt_sdcard_pin_t data0;
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mimxrt_sdcard_pin_t data1;
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mimxrt_sdcard_pin_t data2;
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mimxrt_sdcard_pin_t data3;
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} mimxrt_sdcard_obj_pins_t;
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typedef volatile struct _mimxrt_sdcard_status_obj_t {
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bool initialized;
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bool inserted;
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} mimxrt_sdcard_status_obj_t;
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typedef struct _mimxrt_sdcard_obj_t {
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mp_obj_base_t base;
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USDHC_Type *usdhc_inst;
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usdhc_handle_t handle;
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mimxrt_sdcard_status_obj_t *state;
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uint16_t block_len;
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uint32_t base_clk;
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uint32_t bus_clk;
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uint32_t rca;
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uint32_t block_count;
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uint32_t status;
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uint32_t oper_cond;
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const mimxrt_sdcard_obj_pins_t *pins;
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} mimxrt_sdcard_obj_t;
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// ---
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// SD Card object instances
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// ---
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#if MICROPY_PY_MACHINE_SDCARD && (defined MICROPY_USDHC1 || defined MICROPY_USDHC2)
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enum {
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#if defined MICROPY_USDHC1 && USDHC1_AVAIL
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SDCARD_OBJ_USDHC1_IDX,
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#endif
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#if defined MICROPY_USDHC2 && USDHC2_AVAIL
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SDCARD_OBJ_USDHC2_IDX,
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#endif
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SDCARD_OBJ_USDHC_N
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};
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#endif
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extern mimxrt_sdcard_obj_t mimxrt_sdcard_objs[SDCARD_OBJ_USDHC_N];
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// ---
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// SD Card functions
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// ---
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void sdcard_init(mimxrt_sdcard_obj_t *card, uint32_t base_clk);
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void sdcard_deinit(mimxrt_sdcard_obj_t *card);
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void sdcard_init_pins(mimxrt_sdcard_obj_t *card);
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bool sdcard_read(mimxrt_sdcard_obj_t *card, uint8_t *buffer, uint32_t block_num, uint32_t block_count);
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bool sdcard_write(mimxrt_sdcard_obj_t *card, uint8_t *buffer, uint32_t block_num, uint32_t block_count);
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bool sdcard_set_active(mimxrt_sdcard_obj_t *card);
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bool sdcard_volt_validation(mimxrt_sdcard_obj_t *card);
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bool sdcard_power_on(mimxrt_sdcard_obj_t *self);
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bool sdcard_power_off(mimxrt_sdcard_obj_t *self);
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bool sdcard_detect(mimxrt_sdcard_obj_t *self);
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static inline bool sdcard_state_initialized(mimxrt_sdcard_obj_t *card) {
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return card->state->initialized;
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}
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#endif // MICROPY_INCLUDED_MIMXRT_SDCARD_H
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