169 lines
4.4 KiB
C
169 lines
4.4 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : main.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : Main program body.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/*
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*@Note
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*10-bit addressing mode, master/slave mode transceiver routine:
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*I2C1_SCL(PB8)\I2C1_SDA(PB9).
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*This routine demonstrates that Master sends and Slave receives.
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*Note: The two boards download the Master and Slave programs respectively,
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*and power on at the same time.
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*Hardware connection:PB8 -- PB8
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* PB9 -- PB9
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*/
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#include "debug.h"
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/* I2C Mode Definition */
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#define HOST_MODE 0
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#define SLAVE_MODE 1
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/* I2C Communication Mode Selection */
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#define I2C_MODE HOST_MODE
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//#define I2C_MODE SLAVE_MODE
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/* Global define */
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#define Size 6
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#define RXAdderss 0x02
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#define TxAdderss 0x02
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/* Global Variable */
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u8 TxData[Size] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
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u8 RxData[5][Size];
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/*********************************************************************
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* @fn IIC_Init
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*
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* @brief Initializes the IIC peripheral.
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*
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* @return none
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*/
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void IIC_Init(u32 bound, u16 address)
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{
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GPIO_InitTypeDef GPIO_InitStructure={0};
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I2C_InitTypeDef I2C_InitTSturcture={0};
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RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE );
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GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
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RCC_APB1PeriphClockCmd( RCC_APB1Periph_I2C1, ENABLE );
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init( GPIOB, &GPIO_InitStructure );
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init( GPIOB, &GPIO_InitStructure );
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I2C_InitTSturcture.I2C_ClockSpeed = bound;
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I2C_InitTSturcture.I2C_Mode = I2C_Mode_I2C;
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I2C_InitTSturcture.I2C_DutyCycle = I2C_DutyCycle_16_9;
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I2C_InitTSturcture.I2C_OwnAddress1 = address;
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I2C_InitTSturcture.I2C_Ack = I2C_Ack_Enable;
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I2C_InitTSturcture.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_10bit;
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I2C_Init( I2C1, &I2C_InitTSturcture );
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I2C_Cmd( I2C1, ENABLE );
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#if (I2C_MODE == HOST_MODE)
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I2C_AcknowledgeConfig( I2C1, ENABLE );
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#endif
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}
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/*********************************************************************
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* @fn main
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*
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* @brief Main program.
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*
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* @return none
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*/
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int main(void)
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{
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u8 i = 0;
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u8 j = 0;
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u8 p = 0;
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SystemCoreClockUpdate();
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Delay_Init();
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USART_Printf_Init(460800);
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printf("SystemClk:%d\r\n",SystemCoreClock);
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printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
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#if (I2C_MODE == HOST_MODE)
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printf("IIC Host mode\r\n");
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IIC_Init( 80000, TxAdderss);
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for( j =0; j < 5; j++)
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{
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while( I2C_GetFlagStatus( I2C1, I2C_FLAG_BUSY ) != RESET );
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I2C_GenerateSTART( I2C1, ENABLE );
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while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
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I2C_Send7bitAddress( I2C1, 0xF0, I2C_Direction_Transmitter );
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while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_ADDRESS10 ) );
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I2C_Send7bitAddress( I2C1, 0x02, I2C_Direction_Transmitter );
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while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ) );
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for( i=0; i< 6;i++ )
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{
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if( I2C_GetFlagStatus( I2C1, I2C_FLAG_TXE ) != RESET )
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{
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Delay_Ms(100);
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I2C_SendData( I2C1, TxData[i] );
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}
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}
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while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
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I2C_GenerateSTOP( I2C1, ENABLE );
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Delay_Ms(1000);
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}
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#elif (I2C_MODE == SLAVE_MODE)
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printf( "IIC Slave mode\r\n" );
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IIC_Init( 80000, RXAdderss );
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for( p =0; p < 5; p++)
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{
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i = 0;
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while( !I2C_CheckEvent( I2C1, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ) );
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while( i < 6 )
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{
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if( I2C_GetFlagStatus( I2C1, I2C_FLAG_RXNE ) != RESET )
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{
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RxData[p][i] = I2C_ReceiveData( I2C1 );
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i++;
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}
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}
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I2C1->CTLR1 &= I2C1->CTLR1;
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}
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printf( "RxData:\r\n" );
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for(p=0; p<5; p++)
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{
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for( i = 0; i < 6; i++ )
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{
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printf( "%02x ", RxData[p][i] );
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}
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printf( "\r\n ");
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}
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#endif
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while(1);
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}
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