/*
 * MIT License
 *
 * Copyright (c) 2022 Joey Castillo
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "watch_spi.h"

struct io_descriptor *spi_io;

void watch_enable_spi(void) {
    SPI_0_init();
    spi_m_sync_get_io_descriptor(&SPI_0, &spi_io);
    spi_m_sync_enable(&SPI_0);
}

void watch_disable_spi(void) {
    spi_m_sync_disable(&SPI_0);
    spi_io = NULL;
}

bool watch_spi_write(const uint8_t *buf, uint16_t length) {
	return !!io_write(spi_io, buf, length);
}

bool watch_spi_read(uint8_t *buf, uint16_t length) {
	return !!io_read(spi_io, buf, length);
}

bool watch_spi_transfer(const uint8_t *data_out, uint8_t *data_in, uint16_t length) {
    struct spi_xfer xfer;
    xfer.txbuf = (uint8_t *)data_out;
    xfer.rxbuf = data_in;
    xfer.size = length;
    return !!spi_m_sync_transfer(&SPI_0, &xfer);
}