/**
 ******************************************************************************
 * @file    board.c
 * @author  SRG
 * @version V1.0.0
 * @date    2020-03-17
 * @brief
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2020 FudanMicroelectronics.
 * All rights reserved.</center></h2>
 *
 ******************************************************************************
 */
#include "board.h"
#include "READER.h"
#include "fm15l0xx.h"
#include "fm15l0xx_ll_cmu.h"
#include "fm15l0xx_ll_gpio.h"
#include "fm15l0xx_ll_uart.h"
#include "fm15l0xx_ll_spi.h"
#include "fm15l0xx_ll_svd.h"
#include "fm15l0xx_ll_rng.h"



// 判断VDD是否低于阈值
int Vdd_is_Low( void )
{
    return (!LL_SVD_IsActiveFlag_SVDR() );
}

void SVD_Init( void )
{
    LL_SVD_EnableSVDDigitalFilter();                // 使能数字滤波，间隔检测必须开启
    LL_SVD_SetSVDMode( LL_SVD_SVDMOD_INTERVAL_ON ); // 间隔检测

    LL_SVD_SetSVDInterval( LL_SVD_SVDITVL_62p5ms ); // 检测间隔62.5ms

    LL_SVD_DisableV1P0();                           // 关闭1V基准电压
    LL_SVD_EnableV0P95();                           // 使用基准电压：0.95V
    LL_SVD_SetSVDLevel( LL_SVD_SVDLVL_LEVEL10 );    // 检测阈值等级10 - 阈值3.614V

    LL_SVD_EnableSVD();
}


void RNG_Init( void )
{
    LL_CMU_EnablePeriphBusClock_RNG();                  // Enable bus clock(RCHF)
    LL_CMU_EnableClock_RNG();                           // Enable RNG work clock
    LL_CMU_SetClockPrescaler_RNG( LL_CMU_PERPRSC_2 );   // 4MHz: RCHF / 2，时钟频率过高会导致SFAIL错误

    LL_RNG_EnableNoiseSource();
    LL_RNG_Enable();
}


uint32_t Get_RandomNumber( void )
{
    while ( 1 )
    {
        if ( LL_RNG_IsDataReady() || LL_RNG_IsActiveFlag_SFAIL() )
        {
            if ( LL_RNG_IsActiveFlag_SFAIL() )
            {
                // 清空错误标志
                LL_RNG_ClearFlag_SFAIL();
                LL_RNG_GetRandomData();
            }
            else
            {
                break; // 获取成功
            }
        }
    }

    return (LL_RNG_GetRandomData());
}


/*********************************************************************************************************
** 函数名称:	GPIO_NVIC_Init
** 函数功能:	部分引脚的中断配置
** 输入参数:	无
** 输出参数:	无
** 返回值:		无
*********************************************************************************************************/
void GPIO_NVIC_Init( void )
{
    LL_CMU_EnableClock_EXTI();

    //触摸芯片IRQ中断
    LL_EXTI_SetEXTISelection( LL_EXTI_LINE_0, LL_EXTI_SELECTION_3 );    // PA3
    LL_EXTI_SetEXTIEdgeTrig( LL_EXTI_LINE_0, LL_EXTI_EDS_FALLING );     // Falling

    //FM17读卡芯片IRQ中断
    LL_EXTI_SetEXTISelection( LL_EXTI_LINE_1, LL_EXTI_SELECTION_3 );    // PA7
    LL_EXTI_SetEXTIEdgeTrig( LL_EXTI_LINE_1, LL_EXTI_EDS_FALLING );     // Falling

    NVIC_EnableIRQ( GPIO_IRQn );
}


void GPIO_Init( void )
{
    LL_CMU_EnablePeriphBusClock_GPIO();                                         // Bus clock enable

    LL_GPIO_SetPinMode( GPIOA, LL_GPIO_Pin12, LL_GPIO_PINxMODE_DIGITAL );        // PA12 Digital function - UART1 RX
    LL_GPIO_SetPinDigitalFunc( GPIOA, LL_GPIO_Pin12, LL_GPIO_PinDFS0 );
    LL_GPIO_SetPinMode( GPIOA, LL_GPIO_Pin13, LL_GPIO_PINxMODE_DIGITAL );        // PA13 Digital function - UART1 TX
    LL_GPIO_SetPinDigitalFunc( GPIOA, LL_GPIO_Pin13, LL_GPIO_PinDFS0 );

	
		LL_GPIO_SetPinMode( LED_GPIO, LED1_PIN, LL_GPIO_PINxMODE_OUTPUT );	
		LL_GPIO_SetPinMode( LED_GPIO, LED2_PIN, LL_GPIO_PINxMODE_OUTPUT );	

		LED1_On;
		LED2_On;
		DelayMs(200);
		LED1_Off;
		LED2_Off;

}


void Uart_Init( void )
{
    /* Bus clock enable */
    LL_CMU_EnablePeriphBusClock_UART1();

    LL_CMU_SelectClock_UART1( LL_CMU_HFPER_CLK_APBCLKx );       // Clock source select
    LL_CMU_EnableClock_UART1();                                 // Operation clock enable

    LL_UART_SetBaudRate( UART1, 412 );                          // Set baudrate to 115200bps, reg = (uclk / baudrate) - 1
    LL_UART_SetDataWidth( UART1, LL_UART_DATA_WIDTH_8bit );     // 8 bit
    LL_UART_SetStopBitsLength( UART1, LL_UART_STOPCFG_1bit );   // 1 stop bit
    LL_UART_SetParity( UART1, LL_UART_PARITY_NONE );            // Parity none

    LL_UART_EnableTx( UART1 );                                  // Tx enable
    LL_UART_EnableRx( UART1 );                                  // Rx enable
}


void uart_send_byte( UART_Typedef *uart, uint16_t c )
{
    while ( !LL_UART_IsActiveFlag_TXBE( uart ) )
        ;
    LL_UART_TransmitData( uart, (uint32_t) c );
}


/* Retarget fputc, then you can use printf. */
int fputc( int ch, FILE *f )
{
    uart_send_byte( UART1, ch );
    return (ch);
}

void SPI_Init( SPI_Typedef *spi )
{
    // Bus clock enable
    if ( spi == SPI1 )
        LL_CMU_EnablePeriphBusClock_SPI1();
    else if ( spi == SPI2 )
        LL_CMU_EnablePeriphBusClock_SPI2();

    LL_SPI_DisableCtrlSSN( spi );                        // Disable Software Control
    //LL_SPI_SetSSNOutput( spi, 1 );                      // Set SSN High

    LL_SPI_Disable( spi );                              // Disable SPI
    LL_SPI_SetWorkMode( spi, LL_SPI_WORKMODE_MASTER );  // Mode select - master
    LL_SPI_SetBaudrate( spi, LL_SPI_BAUDRATE_DIV_4 );  // Baudrate Select - fPCLK/16
		LL_SPI_SetFrameFormat(spi,LL_SPI_FRAME_FMT_MSB);
		LL_SPI_SetClockPolarity(spi,LL_SPI_CPOL_NEGATIVE);
		LL_SPI_SetCommMode(spi,LL_SPI_COMM_MODE_STANDARD);
		LL_SPI_SetDataLength(spi,LL_SPI_DATA_LENGTH_8bit);
		LL_SPI_DisableHalfDuplexDummyCycle(spi);
    LL_SPI_Enable( spi );                               // Enable SPI
}


void BSP_Init( void )
{
    GPIO_Init();
    Uart_Init();
		//SPI_Init( SPI1);
		SVD_Init();
		RNG_Init();
}