188 lines
4.7 KiB
C
188 lines
4.7 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
|
|
*two-wire full duplex mode, master/slave mode, data transceiver:
|
|
*Master:SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
|
|
*Slave:SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
|
|
*
|
|
*This example demonstrates simultaneous full-duplex transmission and
|
|
*reception between Master and Slave.
|
|
*Note: The two boards download the Master and Slave programs respectively,
|
|
*and power on at the same time.
|
|
* Hardware connection:PA5 -- PA5
|
|
* PA6 -- PA6
|
|
* PA7 -- PA7
|
|
*
|
|
*/
|
|
|
|
|
|
#include "debug.h"
|
|
#include "string.h"
|
|
|
|
/* SPI Mode Definition */
|
|
#define HOST_MODE 0
|
|
#define SLAVE_MODE 1
|
|
|
|
/* SPI Communication Mode Selection */
|
|
//#define SPI_MODE HOST_MODE
|
|
#define SPI_MODE SLAVE_MODE
|
|
|
|
/* Global define */
|
|
#define Size 18
|
|
|
|
/* Global Variable */
|
|
|
|
u16 TxData[Size] = { 0x0101, 0x0202, 0x0303, 0x0404, 0x0505, 0x0606,
|
|
0x1111, 0x1212, 0x1313, 0x1414, 0x1515, 0x1616,
|
|
0x2121, 0x2222, 0x2323, 0x2424, 0x2525, 0x2626 };
|
|
u16 RxData[Size];
|
|
|
|
/*********************************************************************
|
|
* @fn SPI_FullDuplex_Init
|
|
*
|
|
* @brief Configuring the SPI for full-duplex communication.
|
|
*
|
|
* @return none
|
|
*/
|
|
void SPI_FullDuplex_Init(void)
|
|
{
|
|
GPIO_InitTypeDef GPIO_InitStructure={0};
|
|
SPI_InitTypeDef SPI_InitStructure={0};
|
|
|
|
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_SPI1, ENABLE );
|
|
|
|
#if (SPI_MODE == HOST_MODE)
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
#elif (SPI_MODE == SLAVE_MODE)
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
#endif
|
|
|
|
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
|
|
|
|
#if (SPI_MODE == HOST_MODE)
|
|
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
|
|
|
|
#elif (SPI_MODE == SLAVE_MODE)
|
|
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
|
|
|
|
#endif
|
|
|
|
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
|
|
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
|
|
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
|
|
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
|
|
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
|
|
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
|
|
SPI_InitStructure.SPI_CRCPolynomial = 7;
|
|
SPI_Init( SPI1, &SPI_InitStructure );
|
|
|
|
SPI_Cmd( SPI1, ENABLE );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn main
|
|
*
|
|
* @brief Main program.
|
|
*
|
|
* @return none
|
|
*/
|
|
int main(void)
|
|
{
|
|
u8 i=0;
|
|
u8 j=0;
|
|
u8 value;
|
|
|
|
SystemCoreClockUpdate();
|
|
Delay_Init();
|
|
USART_Printf_Init(460800);
|
|
printf("SystemClk:%d\r\n",SystemCoreClock);
|
|
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
|
|
|
|
#if (SPI_MODE == SLAVE_MODE)
|
|
printf("Slave Mode\r\n");
|
|
Delay_Ms(1000);
|
|
|
|
#endif
|
|
|
|
SPI_FullDuplex_Init();
|
|
|
|
#if (SPI_MODE == HOST_MODE)
|
|
printf("Host Mode\r\n");
|
|
Delay_Ms(2000);
|
|
|
|
#endif
|
|
|
|
while(1)
|
|
{
|
|
while( ( i<18 ) || ( j<18 ))
|
|
{
|
|
if( i<18 )
|
|
{
|
|
if( SPI_I2S_GetFlagStatus( SPI1, SPI_I2S_FLAG_TXE ) != RESET )
|
|
{
|
|
SPI_I2S_SendData( SPI1, TxData[i] );
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if( j<18 )
|
|
{
|
|
if( SPI_I2S_GetFlagStatus( SPI1, SPI_I2S_FLAG_RXNE ) != RESET )
|
|
{
|
|
RxData[j] = SPI_I2S_ReceiveData( SPI1 );
|
|
j++;
|
|
}
|
|
}
|
|
}
|
|
|
|
value = memcmp( TxData, RxData, Size );
|
|
|
|
if( value == 0 )
|
|
{
|
|
printf( "Same\r\n" );
|
|
}
|
|
else
|
|
{
|
|
printf( "Different\r\n" );
|
|
}
|
|
|
|
while(1);
|
|
}
|
|
}
|