#include <stdio.h>
#include <cyg/hal/hal_diag.h>
#include <cyg/io/spi.h>
#include <cyg/io/spi_at91.h>
#include <cyg/io/spi_eb55.h>

#define DEV_NUM 4 //default 0
#define CL_POL 1 //default 1
#define CL_PHA 1 //default 0
#define CL_BRATE 3000000 //default 8192000, 2000000?
#define CS_UP_UDLY 1 //default 1
#define CS_DW_UDLY 1 //default 1
#define TR_BT_UDLY 1 //default 1

static cyg_spi_at91_device_t spi_eb55_device CYG_SPI_DEVICE_ON_BUS(0) = 
{
    .spi_device.spi_bus = &cyg_spi_at91_bus.spi_bus,

    .dev_num     = DEV_NUM,          // Device number
    .cl_pol      = CL_POL,           // Clock polarity (0 or 1)
    .cl_pha      = CL_PHA,           // Clock phase (0 or 1)
    .cl_brate    = CL_BRATE,         // Clock baud rate
    .cs_up_udly  = CS_UP_UDLY,       // Delay in usec between CS up and transfer start
    .cs_dw_udly  = CS_DW_UDLY,       // Delay in usec between transfer end and CS down
    .tr_bt_udly  = TR_BT_UDLY        // Delay in usec between two transfers
};

cyg_spi_device *cyg_spi_eb55_device = &spi_eb55_device.spi_device;

void printAT91_SPI_Configuration(cyg_spi_at91_device_t dev);
void setAT91_SPI_Configuration(cyg_spi_at91_device_t *dev);

void cyg_user_start(void)
{
    cyg_uint8 tx_data0, tx_data1, tx_data2, tx_data3;
    cyg_uint8 rx_data;
    
    printf("Entering application !\n");
    hal_diag_led(0x0);
    
    tx_data0=0x0;
    tx_data1=0x1;
    tx_data2=0x90;
    tx_data3=0x15;
    
    //setAT91_SPI_Configuration(cyg_spi_dataflash_dev0);
    
    cyg_spi_tick(cyg_spi_eb55_device, 0, 10);
    
    printf("Sending data...\n");
    printf("1\n");
    cyg_spi_transaction_begin(cyg_spi_eb55_device);
    printf("2\n");
    cyg_spi_transaction_transfer(cyg_spi_eb55_device, 0, 1, &tx_data0, &rx_data, 0);
    printf("3\n");
    //cyg_spi_transaction_tick(cyg_spi_eb55_device, 0, 1);
    printf("4\n");
    cyg_spi_transaction_end(cyg_spi_eb55_device);
    printf("5\n");
    printf("Datas deceived : %i\n",rx_data);
    
    printf("Sending data...\n");
    printf("1\n");
    cyg_spi_transaction_begin(cyg_spi_eb55_device);
    printf("2\n");
    cyg_spi_transaction_transfer(cyg_spi_eb55_device, 0, 1, &tx_data1, &rx_data, 0);
    printf("3\n");
    //cyg_spi_transaction_tick(cyg_spi_eb55_device, 0, 1);
    printf("4\n");
    cyg_spi_transaction_end(cyg_spi_eb55_device);
    printf("5\n");
    printf("Datas deceived : %i\n",rx_data);
    
    printf("Sending data...\n");
    printf("1\n");
    cyg_spi_transaction_begin(cyg_spi_eb55_device);
    printf("2\n");
    cyg_spi_transaction_transfer(cyg_spi_eb55_device, 0, 1, &tx_data2, &rx_data, 0);
    printf("3\n");
    //cyg_spi_transaction_tick(cyg_spi_eb55_device, 0, 1);
    printf("4\n");
    cyg_spi_transaction_end(cyg_spi_eb55_device);
    printf("5\n");
    printf("Datas deceived : %i\n",rx_data);
    
    printf("Sending data...\n");
    printf("1\n");
    cyg_spi_transaction_begin(cyg_spi_eb55_device);
    printf("2\n");
    cyg_spi_transaction_transfer(cyg_spi_eb55_device, 0, 1, &tx_data3, &rx_data, 0);
    printf("3\n");
    //cyg_spi_transaction_tick(cyg_spi_eb55_device, 0, 1);
    printf("4\n");
    cyg_spi_transaction_end(cyg_spi_eb55_device);
    printf("5\n");
    printf("Datas deceived : %i\n",rx_data);
    
    
    //printAT91_SPI_Configuration(*spi_eb55_device);
    
    /*printf("Sending data...\n");
    cyg_spi_transfer(cyg_spi_eb55_device, 0, 1, &tx_data0, &rx_data);
    cyg_spi_tick(cyg_spi_eb55_device, 0, 1);
    printf("Datas deceived : %i\n",rx_data);
    cyg_spi_transfer(cyg_spi_eb55_device, 0, 1, &tx_data1, &rx_data);
    cyg_spi_tick(cyg_spi_eb55_device, 0, 1);
    printf("Datas deceived : %i\n",rx_data);
    cyg_spi_transfer(cyg_spi_eb55_device, 0, 1, &tx_data2, &rx_data);
    //cyg_spi_tick(cyg_spi_eb55_device, 0, 8);
    printf("Datas deceived : %i\n",rx_data);
    cyg_spi_transfer(cyg_spi_eb55_device, 0, 1, &tx_data3, &rx_data);
    //cyg_spi_tick(cyg_spi_eb55_device, 0, 8);
    printf("Datas deceived : %i\n",rx_data);*/
    
    printf("End of main !\n");
    //cyg_thread_exit();
}

void setAT91_SPI_Configuration(cyg_spi_at91_device_t *dev)
{
    printAT91_SPI_Configuration(*dev);
    
    printf("Setting SPI AT91 devince configuration...\n");
    dev->dev_num = DEV_NUM;
    dev->cl_pol = CL_POL;
    dev->cl_pha = CL_PHA;
    dev->cl_brate = CL_BRATE;
    dev->cs_up_udly = CS_UP_UDLY;
    dev->cs_dw_udly = CS_DW_UDLY;
    dev->tr_bt_udly = TR_BT_UDLY;
    printf("Configuration setted.\n");
    
    printAT91_SPI_Configuration(*dev);
}

void printAT91_SPI_Configuration(cyg_spi_at91_device_t dev)
{
    printf("Printing SPI AT91 device configuration :\n");
    printf("-  -------------\n");
    printf("-  dev_number  = %i\n",dev.dev_num);
    printf("-  cl_polarity = %i\n",dev.cl_pol);
    printf("-  cl_phase    = %i\n",dev.cl_pha);
    printf("-  cl_baudrate = %i\n",dev.cl_brate);
    printf("-  cs_up_udly  = %i\n",dev.cs_up_udly);
    printf("-  cs_dw_udly  = %i\n",dev.cs_dw_udly);
    printf("-  tr_br_udly  = %i\n",dev.tr_bt_udly);
    printf("-  -------------\n");
}