text: /******************************************************************
   *
   * Copyright 2019 Samsung Electronics All Rights Reserved.
   *
   * 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.
   *
   ******************************************************************/
  
  // Copyright 2015-2018 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.
  
  #ifndef _SOC_SPI_PERIPH_H_
  #define _SOC_SPI_PERIPH_H_
  
  #include <stdint.h>
  #include "esp32_soc.h"
  #include "chip/periph_defs.h"
  //include soc related (generated) definitions
  #include "soc/spi_pins.h"
  #include "soc/spi_reg.h"
  #include "soc/spi_struct.h"
  #include "soc/gpio_sig_map.h"
  
  #ifdef __cplusplus
  extern "C"
  {
  
  #endif	/* 
   */
  
  /*
   Stores a bunch of per-spi-peripheral data.
  */
  typedef struct {
  
  	const uint8_t spiclk_out;	//GPIO mux output signals
  	const uint8_t spiclk_in;
  
  	const uint8_t spid_out;
  
  	const uint8_t spiq_out;
  
  	const uint8_t spiwp_out;
  
  	const uint8_t spihd_out;
  
  	const uint8_t spid_in;	//GPIO mux input signals
  	const uint8_t spiq_in;
  
  	const uint8_t spiwp_in;
  
  	const uint8_t spihd_in;
  
  	const uint8_t spics_out[3];	// /CS GPIO output mux signals
  	const uint8_t spics_in;
  
  	const uint8_t spiclk_iomux_pin;	//IO pins of IO_MUX muxed signals
  	const uint8_t spid_iomux_pin;
  
  	const uint8_t spiq_iomux_pin;
  
  	const uint8_t spiwp_iomux_pin;
  
  	const uint8_t spihd_iomux_pin;
  
  	const uint8_t spics0_iomux_pin;
  
  	const uint8_t irq;	//irq source for interrupt mux
  	const uint8_t irq_dma;	//dma irq source for interrupt mux
  	const periph_module_t module;	//peripheral module, for enabling clock etc
  	spi_dev_t *hw;			//Pointer to the hardware registers
  } spi_signal_conn_t;
  
  
  extern const spi_signal_conn_t spi_periph_signal[3];
  
  
  #ifdef __cplusplus
  }
  #endif	/* 
   */
  
  #endif	/* _SOC_SPI_PERIPH_H_ */
  