/********************************** (C) COPYRIGHT *******************************
 * File Name          : main.c
 * Author             : WCH
 * Version            : V1.0.0
 * Date               : 2024/1/6
 * Description        : Main program body.
 *********************************************************************************
 * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
 * Attention: This software (modified or not) and binary are used for 
 * microcontroller manufactured by Nanjing Qinheng Microelectronics.
 *******************************************************************************/

/*
 *@Note
 *10 bit address mode, master/slave mode transceiver routine:
 *I2C1_SCL(PB6)\I2C1_SDA(PB7).
 *This routine demonstrates that Master sends and Slave receives.
 *Note: The two boards download the Master and Slave programs respectively, and 
 *power on at the same time.
 *     Hardware connection:
 *		       PB6--PB6
 *	           PB7--PB7
 */

#include "debug.h"

/* I2C Mode Definition */
#define HOST_MODE   0
#define SLAVE_MODE   1

/* I2C Communication Mode Selection */
#define I2C_MODE   HOST_MODE
//#define I2C_MODE   SLAVE_MODE

/* Global define */
#define Size   6
#define RXAdderss   0x02
#define TxAdderss   0x02

/* Global Variable */
u8 TxData[Size] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
u8 RxData[5][Size];

/*********************************************************************
 * @fn      IIC_Init
 *
 * @brief   Initializes the IIC peripheral.
 *
 * @return  none
 */
void IIC_Init( u32 bound, u16 address )
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};
    I2C_InitTypeDef I2C_InitTSturcture = {0};

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE );
    RCC_APB1PeriphClockCmd( RCC_APB1Periph_I2C1, ENABLE );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init( GPIOB, &GPIO_InitStructure );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init( GPIOB, &GPIO_InitStructure );

    I2C_InitTSturcture.I2C_ClockSpeed = bound;
    I2C_InitTSturcture.I2C_Mode = I2C_Mode_I2C;
    I2C_InitTSturcture.I2C_DutyCycle = I2C_DutyCycle_16_9;
    I2C_InitTSturcture.I2C_OwnAddress1 = address;
    I2C_InitTSturcture.I2C_Ack = I2C_Ack_Enable;
    I2C_InitTSturcture.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_10bit;
    I2C_Init( I2C1, &I2C_InitTSturcture );

    I2C_Cmd( I2C1, ENABLE );
}

/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main( void )
{
    u8 i = 0;
    u8 j = 0;
	  u8 p = 0;

    SystemCoreClockUpdate();
    Delay_Init();
    USART_Printf_Init( 460800 );
    printf( "SystemClk:%d\r\n", SystemCoreClock );
    printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );

#if (I2C_MODE == HOST_MODE)
    printf( "IIC Host mode\r\n" );
    IIC_Init( 80000, TxAdderss );

    for( j =0; j < 5; j++)
    {
    while( I2C_GetFlagStatus( I2C1, I2C_FLAG_BUSY ) != RESET );

    I2C_GenerateSTART( I2C1, ENABLE );

    while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
    I2C_Send7bitAddress( I2C1, 0xF0, I2C_Direction_Transmitter );

    while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_ADDRESS10 ) );
    I2C_Send7bitAddress( I2C1, 0x02, I2C_Direction_Transmitter );

    while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ) );

    for( i=0; i< 6;i++ )
    {
     while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTING ) );
     I2C_SendData( I2C1, TxData[i] );
    }
    while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
    I2C_GenerateSTOP( I2C1, ENABLE );
	  Delay_Ms(1000);
    }

#elif (I2C_MODE == SLAVE_MODE)
    printf( "IIC Slave mode\r\n" );
    IIC_Init( 80000, RXAdderss );
		
 for( p =0; p < 5; p++)
	{
	  i = 0;
    while( !I2C_CheckEvent( I2C1, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ) );

    while( i < 6 )
    {
        if( I2C_GetFlagStatus( I2C1, I2C_FLAG_RXNE ) !=  RESET )
        {
            RxData[p][i] = I2C_ReceiveData( I2C1 );
            i++;
        }
    }
    while( !I2C_CheckEvent( I2C1, I2C_EVENT_SLAVE_STOP_DETECTED ) );
    I2C1->CTLR1 &= I2C1->CTLR1;
  }
    printf( "RxData:\r\n" );
    for(p=0; p<5; p++)
   {
			for( i = 0; i < 6; i++ )
			{   
					printf( "%02x ", RxData[p][i] );
			}
			    printf( "\r\n ");
	 }

#endif

    while( 1 );
}

