sx1278LORA+stm32单片机无线模块可用源程序分享

ID:385001 · 发表于 2019-7-19 20:59

弄了这个半天了不想别人也这么累
出现了很多问题  本来以为GND 接一个就可以  谁知道所有都要接地
SX1278端口配置：

复位：PA1

射频开关芯片收发切换：    CTRL  /CTRL
CTRL:  PA2                1    0    RF_RX
/CTRL: PA3                0    1    RF_TX

DIO0: PA0 可做收发中断用
DIO1: PB1
DIO2: PB2
DIO3: PA8
DIO4: PA11
DIO5: PA12

LED指示灯： PB0

单片机源程序如下:

/****************************************************************************
* 本例程在 STM32开发板上调试通过
*
* 文件名: main.c
* 内容简述: *
* 演示的是安信可LoRa无线通信的功能。
*
* 定义：
* LED1-LED3 ---V1--V3 注意郭版的开发板上LED灯为高电平点亮！
* V1----- PB5-LED1
* V2----- PD6-LED2
* V3----- PD3-LED3
* Key1----PC5
* Key2----PC2
* Key3----PC3
* Key4----PE6
* 硬件连接：
*
* LoRa模块引脚连接
* 1--VDD--3.3V
* 3--GND--GND
* 5--PE1--RESET
* 7--PD4--DIO0
* 9--PD5--DIO1
* 11--PD7--DIO2
* 13--PD11--DIO3
*
* 2--PA5--SCK
* 4--PB7--NSS
* 6--PA7--MOSI
* 8--PA6--MISO
* -----
*20--PD8--DIO5
* 22--PE15--DIO4
* 24--GND--GND
* ------------------------
* | PA9 - USART1(Tx) |
* | PA10 - USART1(Rx) |
* ------------------------
* 基于MDK版本： 3.8
* 基于官方外设库版本： 3.5
*
* 文件历史:
* 版本号日期作者说明
* v0.1 2017-2-11 Duke 创建该文件
*
*******************************************************************************/
#include "sys_config.h"
#define BUFFER_SIZE 30 // Define the payload size here
static uint16_t BufferSize = BUFFER_SIZE; // RF buffer size
static uint8_t Buffer[BUFFER_SIZE]; // RF buffer
static uint8_t EnableMaster = false; // Master/Slave selection
tRadioDriver *Radio = NULL;
const uint8_t PingMsg[] = "PING";
const uint8_t PongMsg[] = "PONG";
const uint8_t MY_TEST_Msg[] = "LoRa_SX1278_TEST";
void OnMaster( void );
void OnSlave( void );
/*
* Manages the master operation
*/
void OnMaster( void )
{
uint8_t i;
switch( Radio->Process( ) )
{
case RF_RX_TIMEOUT:
// Send the next PING frame
Buffer[0] = 'P';
Buffer[1] = 'I';
Buffer[2] = 'N';
Buffer[3] = 'G';
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
Radio->SetTxPacket( Buffer, BufferSize ); //RFLR_STATE_TX_INIT
break;
case RF_RX_DONE:
Radio->GetRxPacket( Buffer, ( uint16_t* )&BufferSize );
for(i=0;i<17;i++)
{
USART_putchar(USART1,Buffer[i]);
}
printf("\n");
if( BufferSize > 0 )
{
if( strncmp( ( const char* )Buffer, ( const char* )PongMsg, 4 ) == 0 )
{
// Indicates on a LED that the received frame is a PONG
// LedToggle( LED_GREEN );
LED0_TOGGLE;
// Send the next PING frame
Buffer[0] = 'P';
Buffer[1] = 'I';
Buffer[2] = 'N';
Buffer[3] = 'G';
// We fill the buffer with numbers for the payload
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
Radio->SetTxPacket( Buffer, BufferSize ); //RFLR_STATE_TX_INIT
}
else if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
{ // A master already exists then become a slave
EnableMaster = false;
// LedOff( LED_RED );
LED0_OFF;
}
}
break;
case RF_TX_DONE:
// Indicates on a LED that we have sent a PING
// LedToggle( LED_RED );
LED0_TOGGLE;
Radio->StartRx( ); //RFLR_STATE_RX_INIT
break;
default:
break;
}
}
/*
* Manages the slave operation
*/
void OnSlave( void )
{
uint8_t i;
switch( Radio->Process( ) )
{
case RF_RX_DONE:
Radio->GetRxPacket( Buffer, ( uint16_t* )&BufferSize );
if( BufferSize > 0 )
{
if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
{
// Indicates on a LED that the received frame is a PING
// LedToggle( LED_GREEN );
LED0_TOGGLE;
// Send the reply to the PONG string
Buffer[0] = 'P';
Buffer[1] = 'O';
Buffer[2] = 'N';
Buffer[3] = 'G';
// We fill the buffer with numbers for the payload
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
Radio->SetTxPacket( Buffer, BufferSize ); //RFLR_STATE_TX_INIT
}
}
break;
case RF_TX_DONE:
// Indicates on a LED that we have sent a PONG
// LedToggle( LED_RED );
LED0_TOGGLE;
Radio->StartRx( ); //RFLR_STATE_RX_INIT
break;
default:
break;
}
}
#define SX1278_RX
//#define SX1278_TX
/**
* @brief 主函数
* @param 无
* @retval 无
*/
int main(void)
{
uint8_t i;
//stm32 config
sys_Configuration();
BoardInit( );
Radio = RadioDriverInit( );
Radio->Init( );
#if defined (SX1278_RX)
Radio->StartRx( ); //RFLR_STATE_RX_INIT
//printf("StartRx\n");
#elif defined (SX1278_TX)
Radio->SetTxPacket( MY_TEST_Msg, 18 );
#endif
while(1)
{
#if defined (SX1278_RX)
while( Radio->Process( ) == RF_RX_DONE)
{
Radio->GetRxPacket( Buffer, ( uint16_t* )&BufferSize );
// if( strncmp( ( const char* )Buffer, ( const char* )MY_TEST_Msg, 18 ) == 0 )
// {
for(i=0;i < BufferSize;i++)
{
USART_putchar(USART1,Buffer[i]);
}
printf("\n");
LED0_TOGGLE;
for(i=0;i<BUFFER_SIZE;i++)
{
Buffer[i] = 0;
}
Radio->StartRx( );
}
#elif defined (SX1278_TX)
// printf("运行在RF_LoRa_TX_OK？ \n");
while(Radio->Process( ) == RF_TX_DONE)
{
printf("RF_LoRa_TX_OK! \n");
LED0_TOGGLE;
Soft_delay_ms(500);
Radio->SetTxPacket( MY_TEST_Msg, strlen(MY_TEST_Msg) ); //RFLR_STATE_TX_INIT
}
#endif
}
}
/*********************************************END OF FILE**********************/