#include "nbiot.h"
#include "string.h"
#include "stdlib.h"  
#include "led.h" 
#include "beep.h" 

/*********************************************************************************
*********************啟明欣欣 STM32F407應用開發板(高配版)*************************
**********************************************************************************
*資源源於網路 程式碼由阿正修改
*QQ群：476840321 
*                               *
**********************************************************************************
********************************************************************************
 
*/

u8 receive_str6[USART6_REC_NUM];     //接收快取陣列,最大USART_REC_LEN個位元組 
u8 uart_byte_count6=0;
//定義結構體用來儲存接收資料
typedef struct {
    char USART_BUFF[100];
    int USART_Length;
    int flag;
}Usart_Struct;

Usart_Struct struct_usart6;
/****************************************************************************
* 名    稱: void uart1_init(u32 bound)
* 功    能：USART6初始化
* 入口引數：bound：波特率
* 返回引數：無
* 說    明： 
***************************************************************************
 
*/
void uart6_init(u32 bound)
{   //GPIO埠設定
  GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;
    
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE); //使能GPIOA時鐘
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);//使能USART1時鐘 
    
 
//串列埠1對應引腳複用對映
    GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_USART6);  //GPIOA9複用為USART1
    GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_USART6); //GPIOA10複用為USART1
    //USART1埠配置
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; //GPIOA9與GPIOA10
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;      //複用功能
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    //速度50MHz
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推輓複用輸出
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;   //上拉
    GPIO_Init(GPIOC,&GPIO_InitStructure);          //初始化PA9，PA10
   //USART1 初始化設定
    USART_InitStructure.USART_BaudRate = bound;//波特率設定
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長為8位資料格式
    USART_InitStructure.USART_StopBits = USART_StopBits_1;  //一個停止位
    USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬體資料流控制
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;    //收發模式
  USART_Init(USART6, &USART_InitStructure); //初始化串列埠1    
  USART_Cmd(USART6, ENABLE);  //使能串列埠1 
    
    USART_ClearFlag(USART6, USART_FLAG_TC);
    
    USART_ITConfig(USART6, USART_IT_RXNE, ENABLE);         //開啟相關中斷
    //Usart1 NVIC 配置
  NVIC_InitStructure.NVIC_IRQChannel = USART6_IRQn;      //串列埠1中斷通道
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//搶佔優先順序3
    NVIC_InitStructure.NVIC_IRQChannelSubPriority =3;           //子優先順序3
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               //IRQ通道使能
    NVIC_Init(&NVIC_InitStructure);      //根據指定的引數初始化VIC暫存器、
}

/*******************************************************************************  
* 傳送位元組 
*******************************************************************************/    
void uart6_send_char(u8 temp)      
{        
    USART_SendData(USART6,(u8)temp);        
    while(USART_GetFlagStatus(USART6,USART_FLAG_TXE)==RESET);         
}    

/*******************************************************************************  
* 傳送字串  
*******************************************************************************/    
void uart6_send_buff(u8 buf[],u32 len)     
{    
    u32 i;    
    for(i=0;i<len;i++)    
    uart6_send_char(buf[i]);
    // 可設定換行符   NB串列埠AT指令不需要換行
   // uart2_send_char('\r');
   // uart2_send_char('\n');

}
void USART6_IRQHandler(void)  
{
        uint8_t ch;
#ifdef SYSTEM_SUPPORT_OS        
    OSIntEnter();    
#endif
    if(USART_GetITStatus(USART6,USART_IT_RXNE) != RESET)
    {
        USART_ClearITPendingBit(USART6,USART_IT_RXNE);
        ch = USART_ReceiveData(USART6);
        struct_usart6.USART_BUFF[struct_usart6.USART_Length++] = ch;
        struct_usart6.flag = 1;
    }
    if( USART_GetITStatus( USART6, USART_IT_IDLE ) == SET )
    {
        USART_ClearITPendingBit(USART6,USART_IT_IDLE);
        struct_usart6.flag = 1;
        ch = USART_ReceiveData(USART6);
    }
#ifdef SYSTEM_SUPPORT_OS     
    OSIntExit();                                             
#endif
    
} 

/*******************************************************************************  
* 傳送字串  並解析返回值是否正確
* cmd為傳入值  reply 為校驗返回值 wait 為延時
*******************************************************************************/   
int NBiot_SendCmd(char* cmd, char* reply, int wait)
{
    struct_usart6.USART_Length = 0;
    printf("[NBiot_SendCmd] %s\r\n", cmd);

    uart6_send_buff((u8*)cmd, strlen(cmd));

    delay_ms(wait);

    if (strcmp(reply, "") == 0) //返回值為空
    {
        return 0;
    }

    if (struct_usart6.USART_Length != 0) //返回值不為空
    {
        struct_usart6.USART_BUFF[struct_usart6.USART_Length] = '\0';

        if (strstr((char*)struct_usart6.USART_BUFF, reply))
        {
            printf("\r\n%s+++YES\r\n", struct_usart6.USART_BUFF);

            return 1;
        }
        else if (strstr((char*)struct_usart6.USART_BUFF, "ERROR"))
        {
            printf("ERROR...\r\n");

            delay_ms(3000);

            return 0;
        }
        else
        {  
            printf("\r\n%s+++NO\r\n", struct_usart6.USART_BUFF);

            return 0;
        }  
    }  
}
int NBiot_Init()  
{
    int ret = 0;
    ret = NBiot_SendCmd("admin#AT+VER","OK", 1000);  //詢問版本號作為初始化
    if (!ret)
    {
        printf("Cannot initialize NBIOT module");
        return 0;
    }
    return ret;
}