esp-idf/components/soc/esp32s2/spi_periph.c

// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "soc/spi_periph.h"
#include "stddef.h"

/*
 Bunch of constants for every SPI peripheral: GPIO signals, irqs, hw addr of registers etc
*/
const spi_signal_conn_t spi_periph_signal[SOC_SPI_PERIPH_NUM] = {
    {
        .spiclk_out = SPICLK_OUT_MUX_IDX,
        .spiclk_in = 0,/* SPI clock is not an input signal*/
        .spid_out = SPID_OUT_IDX,
        .spiq_out = SPIQ_OUT_IDX,
        .spiwp_out = SPIWP_OUT_IDX,
        .spihd_out = SPIHD_OUT_IDX,
        .spid_in = SPID_IN_IDX,
        .spiq_in = SPIQ_IN_IDX,
        .spiwp_in = SPIWP_IN_IDX,
        .spihd_in = SPIHD_IN_IDX,
        .spics_out = {SPICS0_OUT_IDX, SPICS1_OUT_IDX},/* SPI0/1 do not have CS2 now */
        .spics_in = 0,/* SPI cs is not an input signal*/
        .spiclk_iomux_pin = SPI_IOMUX_PIN_NUM_CLK,
        .spid_iomux_pin = SPI_IOMUX_PIN_NUM_MOSI,
        .spiq_iomux_pin = SPI_IOMUX_PIN_NUM_MISO,
        .spiwp_iomux_pin = SPI_IOMUX_PIN_NUM_WP,
        .spihd_iomux_pin = SPI_IOMUX_PIN_NUM_HD,
        .spics0_iomux_pin = SPI_IOMUX_PIN_NUM_CS,
        .irq = ETS_SPI1_INTR_SOURCE,
        .irq_dma = -1,
        .module = PERIPH_SPI_MODULE,
        .hw = (spi_dev_t *) &SPIMEM1,
        .func = SPI_FUNC_NUM,
    }, {
        .spiclk_out = FSPICLK_OUT_MUX_IDX,
        .spiclk_in = FSPICLK_IN_IDX,
        .spid_out = FSPID_OUT_IDX,
        .spiq_out = FSPIQ_OUT_IDX,
        .spiwp_out = FSPIWP_OUT_IDX,
        .spihd_out = FSPIHD_OUT_IDX,
        .spid_in = FSPID_IN_IDX,
        .spiq_in = FSPIQ_IN_IDX,
        .spiwp_in = FSPIWP_IN_IDX,
        .spihd_in = FSPIHD_IN_IDX,
        .spics_out = {FSPICS0_OUT_IDX, FSPICS1_OUT_IDX, FSPICS2_OUT_IDX},
        .spics_in = FSPICS0_IN_IDX,
        .spiclk_iomux_pin = FSPI_IOMUX_PIN_NUM_CLK,
        .spid_iomux_pin = FSPI_IOMUX_PIN_NUM_MOSI,
        .spiq_iomux_pin = FSPI_IOMUX_PIN_NUM_MISO,
        .spiwp_iomux_pin = FSPI_IOMUX_PIN_NUM_WP,
        .spihd_iomux_pin = FSPI_IOMUX_PIN_NUM_HD,
        .spics0_iomux_pin = FSPI_IOMUX_PIN_NUM_CS,
        .irq = ETS_SPI2_INTR_SOURCE,
        .irq_dma = ETS_SPI2_DMA_INTR_SOURCE,
        .module = PERIPH_FSPI_MODULE,
        .hw = &GPSPI2,
        .func = FSPI_FUNC_NUM,
    }, {
        .spiclk_out = SPI3_CLK_OUT_MUX_IDX,
        .spiclk_in = SPI3_CLK_IN_IDX,
        .spid_out = SPI3_D_OUT_IDX,
        .spiq_out = SPI3_Q_OUT_IDX,
        //SPI3 doesn't have wp and hd signals
        .spiwp_out = -1,
        .spihd_out = -1,
        .spid_in = SPI3_D_IN_IDX,
        .spiq_in = SPI3_Q_IN_IDX,
        .spiwp_in = -1,
        .spihd_in = -1,
        .spics_out = {SPI3_CS0_OUT_IDX, SPI3_CS1_OUT_IDX, SPI3_CS2_OUT_IDX},
        .spics_in = SPI3_CS0_IN_IDX,
        //SPI3 doesn't have iomux pins
        .spiclk_iomux_pin = -1,
        .spid_iomux_pin = -1,
        .spiq_iomux_pin = -1,
        .spiwp_iomux_pin = -1,
        .spihd_iomux_pin = -1,
        .spics0_iomux_pin = -1,
        .irq = ETS_SPI3_INTR_SOURCE,
        .irq_dma = ETS_SPI3_DMA_INTR_SOURCE,
        .module = PERIPH_HSPI_MODULE,
        .hw = &GPSPI3,
        .func = -1,
    }
};