/*!
 * \file      spi_slave.c
 *
 * \brief     Target spi slave device implementation
 *
 * \copyright Revised BSD License, see section \ref LICENSE.
 *
 * \code
 *
 *            _  __ _       ________    _
 *           | |/ /(_)___  / ____/ /_  (_)___
 *           |   // / __ \/ /   / __ \/ / __ \
 *          /   |/ / / / / /___/ / / / / /_/ /
 *         /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
 *                                   /_/
 *           (C) 2022-2025 XinChip
 *
 * \endcode
 *
 * \author     ( XinChip ) Alex-J
 *
 * \author     ( XinChip )
 */

/*-----------------------------------------------------------------------------------
                                       INCLUDE HEADE FILES
 ------------------------------------------------------------------------------------*/
#include "spi_slave.h"
#include "xc6xxx_hal_spi.h"
#include "xc6xxx_hal_spi_dmac.h"

/*------------------------------------------------------------------------------------
                                            Macros
 -------------------------------------------------------------------------------------*/
#define SL_BUFFER_LEN 64U
#define SL_NODMA_BUFFER_LEN 16U
/*------------------------------------------------------------------------------------
                                         Global Variables
 -------------------------------------------------------------------------------------*/
volatile uint8_t s_rd_buff[SL_BUFFER_LEN] = {0};
volatile uint8_t s_wr_buff[SL_BUFFER_LEN] = {0};
/*------------------------------------------------------------------------------------
                                            Functions
 -------------------------------------------------------------------------------------*/
/**
 * @brief       spi_dma_slave_demo
 * @details
 * @param       void
 * @retval      void
 */
void spi_dma_slave_demo(void) {
  DEBUG("__SPI_DMA_SLAVE_DEMO__\n");

  GPIO_InitTypeDef gpio_cfg = {0};

  gpio_cfg.Mux = GPIO_Mux0;
  gpio_cfg.Dir = GPIO_DIR_OUTPUT;
  gpio_cfg.FunSel = SSI1_CLK;
  gpio_cfg.Int = NOT_INT;
  gpio_cfg.Pull = GPIO_PULLDOWN;
  gpio_cfg.Pin = GPIO_5;
  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_SSN;
  gpio_cfg.Pin = GPIO_15; // GPIO_15;
  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_TX;
  gpio_cfg.Pin = GPIO_16;
  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_RX;
  gpio_cfg.Pin = GPIO_17;
  GPIO_Init(&gpio_cfg);

  SPI_TypeDef *spi_idx = XC_SPI1; // XC_SPI0;//XC_SPI1;
  SPI_InitCfg_t spi_cfg = {0};

  spi_cfg.Mode = SPI_MODE_SLAVE;
  spi_cfg.DataSize = SSI_CTRL0_DFS_LEN_8BIT;
  spi_cfg.Direction = SSI_CTRL0_TMOD_WR;
  spi_cfg.BaudRatePrescaler =
      SPI_BAUDRATEPRESCALER_2; // SPI_BAUDRATEPRESCALER_2;
  spi_cfg.CLKPolarity = SSI_CTRL0_SCPOL_LOW;
  spi_cfg.CLKPhase = SSI_CTRL0_SCPHA_TRAIL;
  spi_cfg.FirstBit = SPI_FirstBit_MSB;

  xc_spi_init(spi_idx, &spi_cfg);
  NVIC_EnableIRQ(DMA_IRQn);

  DEBUG("Write buffer: \n");
  for (uint16_t i = 0; i < sizeof(s_wr_buff); i++) {
    s_wr_buff[i] = i;
    PRINT("%02x ", s_wr_buff[i]);
  }
  PRINT("\n");

  SPI_DMA_ReadAndWriteData(spi_idx, (uint8_t *)s_wr_buff, sizeof(s_wr_buff),
                           (uint8_t *)s_rd_buff, sizeof(s_rd_buff));
  DEBUG("__SPI_READ_END__\n");
  for (uint16_t i = 0; i < sizeof(s_rd_buff); i++) {
    PRINT("%02x ", s_rd_buff[i]);
  }
  PRINT("\n");

  s_wr_buff[0] = 0xff;
  SPI_DMA_ReadAndWriteData(spi_idx, (uint8_t *)s_wr_buff, sizeof(s_wr_buff),
                           (uint8_t *)s_rd_buff, sizeof(s_rd_buff));
  DEBUG("__SPI_READ_END2__\n");
  for (uint16_t i = 0; i < sizeof(s_rd_buff); i++) {
    PRINT("%02x ", s_rd_buff[i]);
  }
  PRINT("\n");
}

/**
 * @brief       spi_slave_demo
 * @details
 * @param       void
 * @retval      void
 */
void spi_slave_demo(void) {
  DEBUG("__SPI_SLAVE_DEMO__\r");

  SPI_InitCfg_t spi_cfg = {0};
  GPIO_InitTypeDef gpio_cfg = {0};

  gpio_cfg.Mux = GPIO_Mux0;
  gpio_cfg.Dir = GPIO_DIR_OUTPUT;
  gpio_cfg.FunSel = SSI1_CLK;
  gpio_cfg.Int = NOT_INT;
  gpio_cfg.Pull = GPIO_PULLDOWN;
  gpio_cfg.Pin = GPIO_5;

  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_SSN;
  gpio_cfg.Pin = GPIO_15;
  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_TX;
  gpio_cfg.Pin = GPIO_16;
  GPIO_Init(&gpio_cfg);

  gpio_cfg.FunSel = SSI1_RX;
  gpio_cfg.Pin = GPIO_17;
  GPIO_Init(&gpio_cfg);

  spi_cfg.Mode = SPI_MODE_SLAVE;
  spi_cfg.DataSize = SSI_CTRL0_DFS_LEN_8BIT;
  spi_cfg.Direction = SSI_CTRL0_TMOD_WR;
  spi_cfg.BaudRatePrescaler = SSI_BAUD_DIV_8;
  spi_cfg.CLKPolarity = SSI_CTRL0_SCPOL_LOW;
  spi_cfg.CLKPhase = SSI_CTRL0_SCPHA_TRAIL;
  spi_cfg.FirstBit = SPI_FirstBit_MSB;

  SPI_TypeDef *spi_handle = XC_SPI1;

  xc_spi_init(spi_handle, &spi_cfg);

  uint8_t txbuff[SL_NODMA_BUFFER_LEN];
  uint8_t rxbuff[SL_NODMA_BUFFER_LEN];

  SPI_RXFTL_Set(XC_SPI1, 0x07);
  SPI_IE_Enable(XC_SPI1, SSI_IE_RXFIE_ENABLE);
  // while(1)
  //{
  DEBUG("Write buffer: \n");
  for (int i = 0; i < sizeof(txbuff); i++) {
    txbuff[i] = i + 1;
    PRINT("%02x ", txbuff[i]);
  }
  PRINT("\n");

  spi_write_and_read_data(spi_handle, (uint8_t *)txbuff, sizeof(txbuff),
                       (uint8_t *)rxbuff, sizeof(rxbuff));

  DEBUG("Read buffer: \n");
  for (int i = 0; i < sizeof(rxbuff); i++) {
    PRINT("%02x ", rxbuff[i]);
  }
  PRINT("\n");
  DEBUG("__SPI_END__\n");

  DEBUG("Write buffer: \n");
  memset((uint8_t *)txbuff, 0xbb, sizeof(txbuff));
  for (int i = 0; i < sizeof(txbuff); i++) {
    PRINT("%02x ", txbuff[i]);
  }
  PRINT("\n");

  spi_write_and_read_data(spi_handle, (uint8_t *)txbuff, sizeof(txbuff),
                       (uint8_t *)rxbuff, sizeof(rxbuff));

  DEBUG("Read buffer: \n");
  for (int i = 0; i < sizeof(rxbuff); i++) {
    PRINT("%02x ", rxbuff[i]);
  }
  PRINT("\n");
  DEBUG("__SPI_END2__\n");
  //}
}