143 lines
4.7 KiB
C
143 lines
4.7 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 2020 Sony Semiconductor Solutions Corporation
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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 <fcntl.h>
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#include <unistd.h>
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#include <arch/chip/pin.h>
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#include "py/mperrno.h"
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#include "py/runtime.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/sdioio/SDCard.h"
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#include "shared-bindings/util.h"
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#define DATA_PINS_NUM 4
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void common_hal_sdioio_sdcard_construct(sdioio_sdcard_obj_t *self,
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const mcu_pin_obj_t *clock, const mcu_pin_obj_t *command,
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uint8_t num_data, const mcu_pin_obj_t **data, uint32_t frequency) {
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struct geometry geo;
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if (clock->number != PIN_SDIO_CLK || command->number != PIN_SDIO_CMD) {
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raise_ValueError_invalid_pins();
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}
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uint8_t data_pins_num = 0;
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for (uint8_t i = 0; i < DATA_PINS_NUM; i++) {
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if (data[i]->number != PIN_SDIO_DATA0 || data[i]->number != PIN_SDIO_DATA1 ||
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data[i]->number != PIN_SDIO_DATA2 || data[i]->number != PIN_SDIO_DATA3) {
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data_pins_num++;
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}
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}
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if (data_pins_num != DATA_PINS_NUM) {
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raise_ValueError_invalid_pins();
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}
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if (open_blockdriver("/dev/mmcsd0", 0, &self->inode) < 0) {
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mp_raise_ValueError_varg(translate("Could not initialize %q"), MP_QSTR_SDCard);
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}
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self->inode->u.i_bops->geometry(self->inode, &geo);
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claim_pin(clock);
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claim_pin(command);
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self->clock_pin = clock;
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self->command_pin = command;
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for (uint8_t i = 0; i < DATA_PINS_NUM; i++) {
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claim_pin(data[i]);
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self->data_pins[i] = data[i];
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}
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self->count = geo.geo_nsectors;
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self->frequency = frequency;
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self->width = num_data;
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}
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void common_hal_sdioio_sdcard_deinit(sdioio_sdcard_obj_t *self) {
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close_blockdriver(self->inode);
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self->inode = NULL;
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reset_pin_number(self->clock_pin->number);
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reset_pin_number(self->command_pin->number);
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for (uint8_t i = 0; i < DATA_PINS_NUM; i++) {
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reset_pin_number(self->data_pins[i]->number);
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}
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}
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bool common_hal_sdioio_sdcard_deinited(sdioio_sdcard_obj_t *self) {
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return self->inode == NULL;
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}
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bool common_hal_sdioio_sdcard_configure(sdioio_sdcard_obj_t *self, uint32_t baudrate, uint8_t width) {
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return true;
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}
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uint32_t common_hal_sdioio_sdcard_get_frequency(sdioio_sdcard_obj_t *self) {
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return self->frequency;
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}
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uint8_t common_hal_sdioio_sdcard_get_width(sdioio_sdcard_obj_t *self) {
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return self->width;
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}
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uint32_t common_hal_sdioio_sdcard_get_count(sdioio_sdcard_obj_t *self) {
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return self->count;
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}
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STATIC void check_whole_block(mp_buffer_info_t *bufinfo) {
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if (bufinfo->len % 512) {
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mp_raise_ValueError(translate("Buffer length must be a multiple of 512"));
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}
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}
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int common_hal_sdioio_sdcard_readblocks(sdioio_sdcard_obj_t *self, uint32_t start_block, mp_buffer_info_t *bufinfo) {
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if (common_hal_sdioio_sdcard_deinited(self)) {
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raise_deinited_error();
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}
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check_whole_block(bufinfo);
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return self->inode->u.i_bops->read(self->inode, bufinfo->buf, start_block, bufinfo->len / 512);
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}
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int common_hal_sdioio_sdcard_writeblocks(sdioio_sdcard_obj_t *self, uint32_t start_block, mp_buffer_info_t *bufinfo) {
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if (common_hal_sdioio_sdcard_deinited(self)) {
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raise_deinited_error();
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}
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check_whole_block(bufinfo);
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return self->inode->u.i_bops->write(self->inode, bufinfo->buf, start_block, bufinfo->len / 512);
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}
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void common_hal_sdioio_sdcard_never_reset(sdioio_sdcard_obj_t *self) {
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never_reset_pin_number(self->clock_pin->number);
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never_reset_pin_number(self->command_pin->number);
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for (uint8_t i = 0; i < DATA_PINS_NUM; i++) {
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never_reset_pin_number(self->data_pins[i]->number);
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}
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}
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