235 lines
7.0 KiB
C
235 lines
7.0 KiB
C
/********************************** (C) COPYRIGHT *******************************
|
|
* File Name : main.c
|
|
* Author : WCH
|
|
* Version : V1.0.0
|
|
* Date : 2021/06/06
|
|
* 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
|
|
*I2C DMA, master/slave mode transceiver routine:
|
|
*I2C1_SCL(PB8)\I2C1_SDA(PB9).
|
|
*This example demonstrates the 7-bit address mode, Master sends via DMA,
|
|
*and Slave receives via DMA.
|
|
*Note: The two boards download the Master and Slave programs respectively,
|
|
*and power on at the same time.
|
|
*Hardware connection:PB8 -- PB8
|
|
* PB9 -- PB9
|
|
*
|
|
*/
|
|
|
|
|
|
|
|
#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 Tize 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 | RCC_APB2Periph_AFIO, ENABLE );
|
|
GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
|
|
RCC_APB1PeriphClockCmd( RCC_APB1Periph_I2C1, ENABLE );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
|
|
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_9;
|
|
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_7bit;
|
|
I2C_Init( I2C1, &I2C_InitTSturcture );
|
|
|
|
I2C_DMACmd( I2C1, ENABLE );
|
|
|
|
I2C_Cmd( I2C1, ENABLE );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn DMA_Tx_Init
|
|
*
|
|
* @brief Initializes the SPI1 DMAy Channelx configuration.
|
|
*
|
|
* @param DMA_CHx -
|
|
* ppadr - Peripheral base address.
|
|
* memadr - Memory base address.
|
|
* bufsize - DMA channel buffer size.
|
|
*
|
|
* @return none
|
|
*/
|
|
void DMA_Tx_Init(DMA_Channel_TypeDef *DMA_CHx, u32 ppadr, u32 memadr, u16 bufsize)
|
|
{
|
|
DMA_InitTypeDef DMA_InitStructure={0};
|
|
NVIC_InitTypeDef NVIC_InitStructure={0};
|
|
|
|
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA1, ENABLE );
|
|
|
|
DMA_DeInit(DMA_CHx);
|
|
|
|
DMA_InitStructure.DMA_PeripheralBaseAddr = ppadr;
|
|
DMA_InitStructure.DMA_MemoryBaseAddr = memadr;
|
|
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
|
|
DMA_InitStructure.DMA_BufferSize = bufsize;
|
|
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
|
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
|
|
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
|
|
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
|
|
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
|
|
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
|
|
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
|
|
DMA_Init( DMA_CHx, &DMA_InitStructure );
|
|
|
|
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel6_IRQn;
|
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
|
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
|
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|
NVIC_Init(&NVIC_InitStructure);
|
|
|
|
DMA_ITConfig( DMA1_Channel6, DMA_IT_TC, ENABLE );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn DMA_Rx_Init
|
|
*
|
|
* @brief Initializes the SPI1 DMAy Channelx configuration.
|
|
*
|
|
* @param DMA_CHx -
|
|
* ppadr - Peripheral base address.
|
|
* memadr - Memory base address.
|
|
* bufsize - DMA channel buffer size.
|
|
*
|
|
* @return none
|
|
*/
|
|
void DMA_Rx_Init(DMA_Channel_TypeDef *DMA_CHx, u32 ppadr, u32 memadr, u16 bufsize)
|
|
{
|
|
DMA_InitTypeDef DMA_InitStructure={0};
|
|
|
|
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA1, ENABLE );
|
|
|
|
DMA_DeInit(DMA_CHx);
|
|
|
|
DMA_InitStructure.DMA_PeripheralBaseAddr = ppadr;
|
|
DMA_InitStructure.DMA_MemoryBaseAddr = memadr;
|
|
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
|
|
DMA_InitStructure.DMA_BufferSize = bufsize;
|
|
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
|
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
|
|
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
|
|
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
|
|
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
|
|
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
|
|
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
|
|
DMA_Init( DMA_CHx, &DMA_InitStructure );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn main
|
|
*
|
|
* @brief Main program.
|
|
*
|
|
* @return none
|
|
*/
|
|
int main(void)
|
|
{
|
|
uint8_t i ,t;
|
|
uint8_t j ;
|
|
NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );
|
|
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++)
|
|
{
|
|
DMA_Tx_Init( DMA1_Channel6, ( u32 )&I2C1->DATAR, ( u32 )TxData, Tize );
|
|
while( I2C_GetFlagStatus( I2C1, I2C_FLAG_BUSY ) != RESET );
|
|
I2C_GenerateSTART( I2C1, ENABLE );
|
|
|
|
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
|
|
I2C_Send7bitAddress( I2C1, 0x02, I2C_Direction_Transmitter );
|
|
|
|
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ) );
|
|
|
|
DMA_Cmd( DMA1_Channel6, ENABLE );
|
|
|
|
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(t=0; t<5; t++)
|
|
{
|
|
DMA_Rx_Init( DMA1_Channel7, ( u32 )&I2C1->DATAR, ( u32)&RxData[t][0], Tize );
|
|
while( !I2C_CheckEvent( I2C1, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ) );
|
|
DMA_Cmd( DMA1_Channel7, ENABLE );
|
|
|
|
while( ( !DMA_GetFlagStatus( DMA1_FLAG_TC7 ) ) );
|
|
|
|
while(I2C_GetFlagStatus(I2C1,I2C_FLAG_STOPF)==RESET);
|
|
I2C1->CTLR1 &= I2C1->CTLR1;
|
|
|
|
printf( "RxData:\r\n" );
|
|
|
|
for( i = 0; i < 6; i++ )
|
|
{
|
|
printf( "%02x ", RxData[t][i] );
|
|
RxData[t][i] =0;
|
|
}
|
|
printf( "\r\n ");
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
while(1);
|
|
}
|
|
|