ble-light/components/driver/spi/spi.c

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/*******************************************************************************
* @file   spi.c
* @brief  Contains all functions support for spi driver
* @version  0.0
* @date   18. Oct. 2017
* @author qing.han
* 
* Copyright(C) 2016, PhyPlus Semiconductor
* All rights reserved.
*
*******************************************************************************/
#include "spi.h"
#include "error.h"
#include <string.h>
#include "pwrmgr.h"
#include "clock.h"
#include "log.h"

typedef struct _spi_Context{
  spi_Cfg_t   cfg;
  hal_spi_t*  spi_info;
  bool        is_slave_mode;
  spi_xmit_t  transmit;
}spi_Ctx_t;

static spi_Ctx_t m_spiCtx[2];

#define SPI_HDL_VALIDATE(hdl)   {if((hdl == NULL) || (hdl->spi_index > 1))\
                                  return PPlus_ERR_INVALID_PARAM;\
                                if((hdl != m_spiCtx[0].spi_info) && (hdl != m_spiCtx[1].spi_info))\
                                  return PPlus_ERR_NOT_REGISTED;}


////////////////// SPI  /////////////////////////////////////////
//this function is used just when you want to use two spi master module
/*
int hal_spi_module_select(hal_spi_t* spi_ptr)
{
  SPI_HDL_VALIDATE(spi_ptr);

  if(spi_ptr->spi_index == 0)
  {
    AP_PERI_MASTER_SELECT &= ~0x33;
    AP_PERI_MASTER_SELECT |= 0x11;
  }
  else
  {
    AP_PERI_MASTER_SELECT &= ~0x33;
    AP_PERI_MASTER_SELECT |= 0x22;
  }
  
  return PPlus_SUCCESS;
}
*/
static void hal_spi_write_fifo(AP_SSI_TypeDef *Ssix,uint8_t len,uint8_t* tx_rx_ptr)
{
  uint8_t i=0;
  HAL_ENTER_CRITICAL_SECTION();
  while(i<len)
  {
    Ssix->DataReg = *(tx_rx_ptr+i);
    i++;
  }
  HAL_EXIT_CRITICAL_SECTION();
}

static void hal_spi_read_fifo(AP_SSI_TypeDef *Ssix,uint8_t len,uint8_t* tx_rx_ptr)
{
  uint8_t i=0;
  HAL_ENTER_CRITICAL_SECTION();
  while(i<len)
  {
    *(tx_rx_ptr+i) =   Ssix->DataReg;
    i++;
  }
  HAL_EXIT_CRITICAL_SECTION();
}


void spi_int_enable(hal_spi_t* spi_ptr, uint32_t mask)
{
  AP_SSI_TypeDef *Ssix = NULL; 

  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  //Ssix->IMR = mask & 0x11;
  
  //HAL_ENTER_CRITICAL_SECTION();
  NVIC_EnableIRQ((IRQn_Type)(SPI0_IRQ + spi_ptr->spi_index));
  NVIC_SetPriority((IRQn_Type)(SPI0_IRQ + spi_ptr->spi_index), IRQ_PRIO_HAL);
  //HAL_EXIT_CRITICAL_SECTION();

  if(m_spiCtx[spi_ptr->spi_index].cfg.force_cs == true)
    Ssix->IMR = 0x11;
  else
    Ssix->IMR = 0x10;
}

static void spi_int_disable(hal_spi_t* spi_ptr)
{
  AP_SSI_TypeDef *Ssix = NULL; 

  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;

  NVIC_DisableIRQ((IRQn_Type)(SPI0_IRQ + spi_ptr->spi_index));

  Ssix->IMR = 0x00;
}


static void spi_int_handle(uint8_t id, spi_Ctx_t* pctx, AP_SSI_TypeDef * Ssix)
{ 
  volatile uint8_t spi_irs_status;
  spi_xmit_t* trans_ptr;
  uint32_t rx_ftlr;
  spi_evt_t evt;
  bool complete_flag = false;
  uint16_t rem;
  uint8_t *rxBuf,*txBuf,i,len;  

  trans_ptr = &pctx->transmit;
  spi_irs_status = Ssix->ISR;  
  if(spi_irs_status & TRANSMIT_FIFO_EMPTY)
  {
    if(pctx->cfg.force_cs == true)
    {
      if(trans_ptr->tx_offset >= trans_ptr->xmit_len)
        Ssix->IMR = 0x10;
    }
  }
  
  if(spi_irs_status & RECEIVE_FIFO_FULL)
  {
    rx_ftlr = Ssix->RXFTLR;
    rxBuf = trans_ptr->rx_buf + trans_ptr->rx_offset;
    
    i=0;
    while(i<(rx_ftlr+1))
    {
      *(rxBuf+i) = Ssix->DataReg;
      i++;
    }
        
    trans_ptr->rx_offset += rx_ftlr+1;
    if(trans_ptr->rx_offset < trans_ptr->xmit_len)
    {
      rem = trans_ptr->xmit_len - trans_ptr->rx_offset;
      if(pctx->cfg.force_cs == true)
      {
        len = (rem>=4) ? 4 : rem;
      }
      else
      {
        len = (rem>=8) ? 8 : rem;
      }
  
      if(rx_ftlr != (len-1))
      {
        Ssix->RXFTLR = len-1;
        Ssix->TXFTLR = len-1;
      }
      
      i=0;
      txBuf = trans_ptr->tx_buf + trans_ptr->tx_offset;
      while(i<len)
      {
        Ssix->DataReg = *(txBuf+i);
        i++;
      }
      trans_ptr->tx_offset += len;
    }
    else
    {
      if(pctx->cfg.force_cs == true)
        hal_gpio_fmux(pctx->cfg.ssn_pin, Bit_ENABLE);
      complete_flag = true;
    }
  }
  
  if(complete_flag == true)
  {
    Ssix->IMR = 0x00;
    trans_ptr->busy = false;
    trans_ptr->tx_buf = NULL;
    trans_ptr->rx_buf = NULL;
    trans_ptr->tx_offset = 0;
    trans_ptr->rx_offset = 0;
    trans_ptr->xmit_len = 0;
    hal_pwrmgr_unlock((MODULE_e)(MOD_SPI0 + id));
    
    evt.id = id;
    evt.evt = SPI_TX_COMPLETED;
    pctx->cfg.evt_handler(&evt);
  }
}

static void spis_int_handle(uint8_t id, spi_Ctx_t* pctx, AP_SSI_TypeDef * Ssix)
{ 
  volatile uint8_t spi_irs_status;
  spi_xmit_t* trans_ptr;
  spi_evt_t evt;
  uint16_t i, cnt;
    
  trans_ptr = &(pctx->transmit);
  spi_irs_status = Ssix->ISR;  
  if(spi_irs_status & TRANSMIT_FIFO_EMPTY)
  {
    cnt = 8 - Ssix->TXFLR;
    for(i = 0; i< cnt; i++){
      if(trans_ptr->tx_offset == trans_ptr->xmit_len){
        Ssix->IMR = 0x10;
        break;
      }
      if(trans_ptr->tx_buf){
        Ssix->DataReg = trans_ptr->tx_buf[trans_ptr->tx_offset ++];
      }
      else
      {
        trans_ptr->tx_offset ++;
        Ssix->DataReg = 0;
      }
    }
  }
  
  if(spi_irs_status & RECEIVE_FIFO_FULL)
  {
    volatile uint32_t garbage;
    cnt = Ssix->RXFLR;
    if(trans_ptr->rx_buf){
      for(i = 0; i< cnt; i++)
      {
        if(trans_ptr->xmit_len > trans_ptr->rx_offset)
          trans_ptr->rx_buf[trans_ptr->rx_offset++] = Ssix->DataReg;
        else
          garbage = Ssix->DataReg;
      }
    }
    else
    {
      uint8_t rxbuf[16];
      if(trans_ptr->busy)
        trans_ptr->rx_offset += cnt;
      for(i = 0; i< cnt; i++)
      {
        *(rxbuf+i) = Ssix->DataReg;
      }
      evt.id = id;
      evt.evt = SPI_RX_DATA_S;
  		evt.data = rxbuf;
  		evt.len = cnt;
      pctx->cfg.evt_handler(&evt);
      
    }
    
    if(trans_ptr->busy && trans_ptr->rx_offset >= trans_ptr->xmit_len){
      memset(trans_ptr, 0, sizeof(spi_xmit_t));
      evt.id = id;
      evt.evt = SPI_RX_COMPLETED;
  		evt.data = NULL;
  		evt.len = cnt;
      pctx->cfg.evt_handler(&evt);
      evt.evt = SPI_TX_COMPLETED;
      pctx->cfg.evt_handler(&evt);
    }
  }
  
}

/**************************************************************************************
 * @fn          hal_SPI0_IRQHandler
 *
 * @brief       This function process for spi0 interrupt,when use int please consummate its callbackfunction
 *
 * input parameters
 *
 * @param       None.      
 *
 * output parameters
 *
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
void __attribute__((used)) hal_SPI0_IRQHandler(void)
{
  spi_Ctx_t* pctx = &m_spiCtx[0];
  if(pctx->spi_info == NULL)
    return;
  if(pctx->is_slave_mode)
    spis_int_handle(0, pctx, AP_SPI0);
  else
    spi_int_handle(0, pctx, AP_SPI0);
}

/**************************************************************************************
 * @fn          hal_SPI1_IRQHandler
 *
 * @brief       This function process for spi1 interrupt,when use int please consummate its callbackfunction
 *
 * input parameters
 *
 * @param       None.      
 *
 * output parameters
 *
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
void __attribute__((used)) hal_SPI1_IRQHandler(void)
{
  spi_Ctx_t* pctx = &m_spiCtx[1];
  if(pctx->spi_info == NULL)
    return;
  if(pctx->is_slave_mode)
    spis_int_handle(1, pctx, AP_SPI1);
  else
    spi_int_handle(1, pctx, AP_SPI1);
}

/**************************************************************************************
 * @fn          hal_spi_pin_init
 *
 * @brief       This function process for spi pin initial(4 lines);You can use two spi,spi0 and spi1,should programe by USE_AP_SPIX 
 *
 * input parameters
 *
 * @param       GPIO_Pin_e sck_pin: define sclk pin
 *              GPIO_Pin_e ssn_pin: define ssn pin
 *              GPIO_Pin_e tx_pin: define transmit pin;when use as master,it's mosi pin;corresponding,use as slave,it's miso
 *              GPIO_Pin_e rx_pin: define receive pin;when use as master,it's miso pin;corresponding,use as slave,it's mosi
 *
 * output parameters
 *
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
static void hal_spi_pin_init(hal_spi_t* spi_ptr,GPIO_Pin_e sck_pin,GPIO_Pin_e ssn_pin,GPIO_Pin_e tx_pin,GPIO_Pin_e rx_pin)
{  
  if(spi_ptr->spi_index == SPI0)
  {
    hal_gpio_fmux_set(sck_pin, SPI_0_SCK);
    hal_gpio_fmux_set(ssn_pin, SPI_0_SSN);
    hal_gpio_fmux_set(tx_pin, SPI_0_TX);
    hal_gpio_fmux_set(rx_pin, SPI_0_RX);
  }
  else if(spi_ptr->spi_index == SPI1)
  {
    hal_gpio_fmux_set(sck_pin, SPI_1_SCK);
    hal_gpio_fmux_set(ssn_pin, SPI_1_SSN);
    hal_gpio_fmux_set(tx_pin, SPI_1_TX);
    hal_gpio_fmux_set(rx_pin, SPI_1_RX);
  } 
}

static void hal_spi_pin_deinit(GPIO_Pin_e sck_pin,GPIO_Pin_e ssn_pin,GPIO_Pin_e tx_pin,GPIO_Pin_e rx_pin)
{
  hal_gpio_fmux(sck_pin, Bit_DISABLE);
  hal_gpio_fmux(ssn_pin, Bit_DISABLE); 
  hal_gpio_fmux(tx_pin, Bit_DISABLE); 
  hal_gpio_fmux(rx_pin, Bit_DISABLE); 
}

/**************************************************************************************
 * @fn          hal_spi_master_init
 *
 * @brief       This function process for spi master initial
 *
 * input parameters
 *
 * @param       uint32_t baud: baudrate select
 *              SPI_SCMOD_e scmod: Serial Clock Polarity and Phase select;  SPI_MODE0,        //SCPOL=0,SCPH=0(default)
 *                                                                          SPI_MODE1,        //SCPOL=0,SCPH=1
 *                                                                          SPI_MODE2,        //SCPOL=1,SCPH=0
 *                                                                          SPI_MODE3,        //SCPOL=1,SCPH=1
 *              SPI_TMOD_e tmod: Transfer Mode                              SPI_TRXD,        //Transmit & Receive(default)
 *                                                                          SPI_TXD,         //Transmit Only
 *                                                                          SPI_RXD,         //Receive Only
 *                                                                          SPI_EEPROM,      //EEPROM Read  
 *
 * output parameters
 *
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
static void hal_spi_master_init(hal_spi_t* spi_ptr,uint32_t baud,SPI_SCMOD_e scmod,SPI_TMOD_e tmod) 
{
  uint8_t shift = 0;
  AP_SSI_TypeDef *Ssix = NULL; 
  AP_COM_TypeDef *apcom = AP_COM;
  uint16_t baud_temp;
  int pclk = clk_ap_pclk();
	
  if(spi_ptr->spi_index == SPI1)
  {
    shift = 1;
  }
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  Ssix->SSIEN = 0;  //DISABLE_SPI;    
  
  apcom->PERI_MASTER_SELECT |= (BIT(shift)|BIT(shift+4));

  Ssix->CR0= ((Ssix->CR0) & 0xfffffc3f)|(scmod<<6)|(tmod<<8);

  baud_temp = (pclk + (baud>>1)) / baud;
  if(baud_temp<2)
  {
    baud_temp = 2;
  }
  else if(baud_temp>65534)
  {
    baud_temp =65534;
  } 
  Ssix->BAUDR= baud_temp;   // set clock(round)
  
  Ssix->TXFTLR=4;    // set fifo threshold to triggle interrupt
  Ssix->RXFTLR=1;

  Ssix->IMR = 0x00;
  Ssix->SER=1;      //enable slave device
  
  Ssix->SSIEN = 1;  //ENABLE_SPI;
}

/**************************************************************************************
 * @fn          hal_spi_slave_init
 *
 * @brief       This function process for spi slave initial
 *
 * input parameters
 *
 * @param       uint32_t baud: baudrate select
 *              SPI_SCMOD_e scmod: Serial Clock Polarity and Phase select;  SPI_MODE0,        //SCPOL=0,SCPH=0(default)
 *                                                                          SPI_MODE1,        //SCPOL=0,SCPH=1
 *                                                                          SPI_MODE2,        //SCPOL=1,SCPH=0
 *                                                                          SPI_MODE3,        //SCPOL=1,SCPH=1
 *              SPI_TMOD_e tmod: Transfer Mode                              SPI_TRXD,        //Transmit & Receive(default)
 *                                                                          SPI_TXD,         //Transmit Only
 *                                                                          SPI_RXD,         //Receive Only
 *                                                                          SPI_EEPROM,      //EEPROM Read  
 *
 * output parameters
 *
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
/*static*/ void hal_spi_slave_init(hal_spi_t* spi_ptr,uint32_t baud,SPI_SCMOD_e scmod,SPI_TMOD_e tmod)
{
  uint8_t shift = 0;
  AP_SSI_TypeDef *Ssix = NULL;
  AP_COM_TypeDef *apcom = AP_COM;
  uint16_t baud_temp; 
  int pclk = clk_ap_pclk();
	
  if(spi_ptr->spi_index == SPI1)
  {
    shift = 1;
  }
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  Ssix->SSIEN = 0;  //DISABLE_SPI;    
  
  apcom->PERI_MASTER_SELECT &= ~(BIT(shift));
  
  Ssix->CR0= ((Ssix->CR0) & 0xfffffc3f)|(scmod<<6)|(tmod<<8)|0x400;
  
  baud_temp = (pclk + (baud>>1)) / baud;
  if(baud_temp<2)
  {
    baud_temp = 2;
  }
  else if(baud_temp>65534)
  {
    baud_temp =65534;
  } 
  Ssix->BAUDR= baud_temp;   // set clock(round)
  
  Ssix->TXFTLR=4;    // set fifo threshold to triggle interrupt
  Ssix->RXFTLR=1;    //threshold is 1
  Ssix->IMR=0x11;    //enable tx and rx
//  Ssix->SER=1;      //enable slave device
  Ssix->SSIEN = 1;  //ENABLE_SPI;
}





static int hal_spi_tx_rx_single_frame(hal_spi_t* spi_ptr,uint8_t* tx_buf,uint8_t* rx_buf,uint8_t len)
{
  int ret =  PPlus_ERR_BUSY;;
  uint8_t dummy_buf[8] ={0,0,0,0,0,0,0,0};//padding data with your application
  uint8_t* tx_rx_ptr = NULL;
  AP_SSI_TypeDef *Ssix = NULL; 
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  if(tx_buf != NULL)
    tx_rx_ptr = tx_buf;
  else
    tx_rx_ptr = dummy_buf;
  
  //while(SPI_BUSY);  
  if(Ssix->SR & TX_FIFO_NOT_FULL)
  {
    hal_spi_write_fifo(Ssix,len,tx_rx_ptr);
    
    SPI_INIT_TOUT(to);
    while(Ssix->SR & SPI_BUSY)
    {
	   SPI_CHECK_TOUT(to,1000000,"timeout\n")
    }
    ret = PPlus_SUCCESS;
  }
  else
  {
    return ret;
  }
  
  if(rx_buf != NULL)
    tx_rx_ptr = rx_buf;
  else
    tx_rx_ptr = dummy_buf;
  
  //while(SPI_BUSY);
  len = NUMBER_DATA_RX_FIFO;
  hal_spi_read_fifo(Ssix,len,tx_rx_ptr);

  return ret;
}


static void spi0_sleep_handler(void)
{
  if(m_spiCtx[0].spi_info != NULL)
    hal_spi_bus_deinit(m_spiCtx[0].spi_info);   
}

static void spi1_sleep_handler(void)
{
  if(m_spiCtx[1].spi_info != NULL)
    hal_spi_bus_deinit(m_spiCtx[1].spi_info);   
}

static void spi0_wakeup_handler(void)
{
  NVIC_SetPriority((IRQn_Type)SPI0_IRQ, IRQ_PRIO_HAL);
}

static void spi1_wakeup_handler(void)
{
  NVIC_SetPriority((IRQn_Type)SPI1_IRQ, IRQ_PRIO_HAL);
}

int hal_spi_transmit(hal_spi_t* spi_ptr,uint8_t* tx_buf,uint8_t* rx_buf,uint16_t len)
{
	spi_Ctx_t* pctx;
	AP_SSI_TypeDef *Ssix = NULL; 
	spi_xmit_t* trans_ptr;
	uint8_t trans_len,remainder;
	uint16_t offset = 0;
  
  SPI_HDL_VALIDATE(spi_ptr);
  
	if((tx_buf == NULL) && (rx_buf == NULL))
		return PPlus_ERR_INVALID_PARAM;

	if(len == 0)
		return PPlus_ERR_INVALID_PARAM;

	pctx = &m_spiCtx[spi_ptr->spi_index];
	trans_ptr = &(pctx->transmit);

	if(pctx->transmit.busy == true)
		return PPlus_ERR_BUSY;
  
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  if(pctx->cfg.force_cs == true /*&& pctx->is_slave_mode == FALSE*/)
  {
    hal_gpio_fmux(pctx->cfg.ssn_pin,Bit_DISABLE);
    hal_gpio_write(pctx->cfg.ssn_pin,0);
  }  
  
  if(pctx->cfg.int_mode == false)
  {
	SPI_INIT_TOUT(to);
    while(len > 0)
    {
		trans_len =(len >= 8)?8:len;
        if(PPlus_SUCCESS == hal_spi_tx_rx_single_frame(spi_ptr,(tx_buf + offset),(rx_buf + offset),trans_len))
		{
			offset += trans_len;
			len -= trans_len;
		}
		 SPI_CHECK_TOUT(to,1000000,"timeout2\n")
    }
	
    if(pctx->cfg.force_cs == true  && pctx->is_slave_mode == FALSE)
      hal_gpio_fmux(pctx->cfg.ssn_pin,Bit_ENABLE);
  }
  else
  {
    spi_int_disable(spi_ptr);
	trans_ptr->busy = true;
	trans_ptr->tx_offset = 0;
	trans_ptr->rx_offset = 0;
	trans_ptr->rx_buf = rx_buf;
	trans_ptr->xmit_len = len;
    memcpy(trans_ptr->tx_buf,tx_buf,len);
   
  
	if(Ssix->SR & TX_FIFO_NOT_FULL)
	{

		hal_pwrmgr_lock((MODULE_e)(MOD_SPI0 + spi_ptr->spi_index));
			
		if(pctx->cfg.force_cs == true)

			trans_len = 4;
		else
			trans_len = 8;			
		
		remainder = (len >= trans_len)?trans_len:len;
		m_spiCtx[spi_ptr->spi_index].transmit.tx_offset = remainder;
		Ssix->TXFTLR=remainder-1;
		Ssix->RXFTLR = remainder -1;
		hal_spi_write_fifo(Ssix,remainder,tx_buf);
		
		
		

	}
    spi_int_enable(spi_ptr,0x11);
}
  
  return PPlus_SUCCESS;
}

int hal_spi_set_tx_buffer(hal_spi_t* spi_ptr,uint8_t* tx_buf,uint16_t len)
{

  SPI_HDL_VALIDATE(spi_ptr);
   
  if((tx_buf == NULL) || (len == 0))
    return PPlus_ERR_INVALID_PARAM;
    
  m_spiCtx[spi_ptr->spi_index].transmit.tx_buf = tx_buf;//used when tx int
  m_spiCtx[spi_ptr->spi_index].transmit.buf_len = len;

  return PPlus_SUCCESS;
}

int hal_spi_set_int_mode(hal_spi_t* spi_ptr,bool en)
{ 
  SPI_HDL_VALIDATE(spi_ptr);
  
  m_spiCtx[spi_ptr->spi_index].cfg.int_mode = en;
  
  if(en)
  {
      m_spiCtx[spi_ptr->spi_index].cfg.int_mode = true;
      spi_int_enable(spi_ptr, 0x10);
  }
  else
  {
      m_spiCtx[spi_ptr->spi_index].cfg.int_mode = false;
      spi_int_disable(spi_ptr);
  }
  
  return PPlus_SUCCESS;
}

int hal_spi_set_force_cs(hal_spi_t* spi_ptr,bool en)
{
  SPI_HDL_VALIDATE(spi_ptr);
  
  m_spiCtx[spi_ptr->spi_index].cfg.force_cs = en;
  return PPlus_SUCCESS;
}

bool hal_spi_get_transmit_bus_state(hal_spi_t* spi_ptr)
{
  return m_spiCtx[spi_ptr->spi_index].transmit.busy;
}


int hal_spi_TxComplete(hal_spi_t* spi_ptr)
{
  AP_SSI_TypeDef *Ssix = NULL; 
  
  SPI_HDL_VALIDATE(spi_ptr);
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;

  SPI_INIT_TOUT(to);
  while(Ssix->SR & SPI_BUSY)
  {
    SPI_CHECK_TOUT(to, SPI_OP_TIMEOUT, "hal_spi_TxComplete TO\n");
  }
  return PPlus_SUCCESS;
}

int hal_spi_send_byte(hal_spi_t* spi_ptr,uint8_t data)
{
  AP_SSI_TypeDef *Ssix = NULL; 
  
  SPI_HDL_VALIDATE(spi_ptr);
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  if(Ssix->SR & TX_FIFO_NOT_FULL){    
    Ssix->DataReg = data & 0xff;
    SPI_INIT_TOUT(to);
    while(Ssix->SR & SPI_BUSY)
    {
      SPI_CHECK_TOUT(to, SPI_OP_TIMEOUT,"hal_spi_send_byte TO\n");
    }      
  }
	return PPlus_SUCCESS;
}


int hal_spi_bus_init(hal_spi_t* spi_ptr,spi_Cfg_t cfg)
{
  spi_Ctx_t* pctx = NULL;
  if((spi_ptr == NULL) || (spi_ptr->spi_index > 1))
    return PPlus_ERR_INVALID_PARAM;
  
  pctx = &m_spiCtx[spi_ptr->spi_index];
  
  if(pctx->spi_info != NULL)
    return PPlus_ERR_BUSY;

  clk_gate_enable((MODULE_e)(MOD_SPI0 + spi_ptr->spi_index));
  
  hal_spi_pin_init(spi_ptr,cfg.sclk_pin,cfg.ssn_pin,cfg.MOSI,cfg.MISO);

  hal_spi_master_init(spi_ptr,cfg.baudrate, cfg.spi_scmod, cfg.spi_tmod);
  
  pctx->cfg = cfg;
  pctx->transmit.busy = false;
  pctx->spi_info = spi_ptr;
  
  if(cfg.int_mode)
    spi_int_enable(spi_ptr, 0x10);
  else
    spi_int_disable(spi_ptr);

  pctx->is_slave_mode = false;
  
  return PPlus_SUCCESS;
}

//#define SPI_INIT_TOUT(to) int to = hal_systick()
//#define PSI_CHECK_TOUT(to, timeout, loginfo) {if(hal_ms_intv(to) > timeout){LOG(loginfo);return PPlus_ERR_TIMEOUT;}}

int hal_spis_clear_rx(hal_spi_t* spi_ptr)
{
  AP_SSI_TypeDef *Ssix = NULL;
  volatile uint8_t rx;
  SPI_HDL_VALIDATE(spi_ptr);
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  while(Ssix->RXFLR){
    rx = Ssix->DataReg;
  }
  return (int)rx;
}

uint32_t hal_spis_rx_len(hal_spi_t* spi_ptr)
{
  AP_SSI_TypeDef *Ssix = NULL; 
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  return Ssix->RXFLR;
}

int hal_spis_read_rxn(hal_spi_t* spi_ptr, uint8_t* pbuf, uint16_t len)
{
  AP_SSI_TypeDef *Ssix = NULL; 
  
  Ssix = (spi_ptr->spi_index == SPI0) ? AP_SPI0 : AP_SPI1;
  
  while(len){
    *pbuf = Ssix->DataReg;
    pbuf ++;
    len --;
  }
  return PPlus_SUCCESS;
}

int hal_spis_bus_init(hal_spi_t* spi_ptr,spi_Cfg_t cfg)
{
  spi_Ctx_t* pctx = NULL;
  if((spi_ptr == NULL) || (spi_ptr->spi_index > 1))
    return PPlus_ERR_INVALID_PARAM;
  
  pctx = &m_spiCtx[spi_ptr->spi_index];

  if(pctx->spi_info != NULL)
    return PPlus_ERR_BUSY;

  clk_gate_enable((MODULE_e)(MOD_SPI0 + spi_ptr->spi_index));
  
  hal_spi_pin_init(spi_ptr,cfg.sclk_pin,cfg.ssn_pin,cfg.MOSI,cfg.MISO);

  hal_spi_slave_init(spi_ptr,cfg.baudrate, cfg.spi_scmod, cfg.spi_tmod);
  
  pctx->cfg = cfg;

  memset(&(pctx->transmit), 0, sizeof(spi_xmit_t));
  pctx->spi_info = spi_ptr;
  pctx->is_slave_mode = true;
  if(cfg.int_mode)
    spi_int_enable(spi_ptr, 0x10);
  else
    spi_int_disable(spi_ptr);
  
  return PPlus_SUCCESS;
}

/**************************************************************************************
 * @fn          hal_spi_deinit
 *
 * @brief       This function will deinit the spi you select.
 *
 * input parameters
 *
 * @param         hal_spi_t* spi_ptr: spi module handle.

 *
 * output parameters
 *
 * @param       None.
 *
 * @return      
 *              PPlus_SUCCESS
 *              PPlus_ERR_INVALID_PARAM
 **************************************************************************************/
int hal_spi_bus_deinit(hal_spi_t* spi_ptr)
{
	SPI_HDL_VALIDATE(spi_ptr);
	clk_reset((MODULE_e)(MOD_SPI0 + spi_ptr->spi_index));
	clk_gate_disable((MODULE_e)(MOD_SPI0 + spi_ptr->spi_index));
	//spi_int_disable(spi_ptr);

	hal_spi_pin_deinit(m_spiCtx[spi_ptr->spi_index].cfg.sclk_pin,m_spiCtx[spi_ptr->spi_index].cfg.ssn_pin,m_spiCtx[spi_ptr->spi_index].cfg.MOSI,m_spiCtx[spi_ptr->spi_index].cfg.MISO);
	memset(&(m_spiCtx[spi_ptr->spi_index]),0,sizeof(spi_Ctx_t));

	return PPlus_SUCCESS;
}



/**************************************************************************************
 * @fn          hal_spi_init
 *
 * @brief       it is used to init spi module.
 *
 * input parameters
 * @param       None
 *
 * output parameters
 * @param       None.
 *
 * @return      None.
 **************************************************************************************/
int hal_spi_init(SPI_INDEX_e channel)
{
  int ret = 0;
  if(channel == SPI0){
    ret = hal_pwrmgr_register(MOD_SPI0,spi0_sleep_handler, spi0_wakeup_handler);
    if(ret == PPlus_SUCCESS)
      memset(&m_spiCtx[0],0,sizeof(spi_Ctx_t));
    return ret;
  }
  else if(channel == SPI1){
    ret = hal_pwrmgr_register(MOD_SPI1,spi1_sleep_handler, spi1_wakeup_handler);
    if(ret == PPlus_SUCCESS)
      memset(&m_spiCtx[1],0,sizeof(spi_Ctx_t));
    return ret;
  }
  return PPlus_ERR_INVALID_PARAM;
}