2.4G無線模塊nrf24l01通信試驗程序

ID:127084 · 發表于 2016-6-17 12:56

  最近項目中用到了2.4G無線模塊的數據通信，經過無數次的摸索和實驗，完成了該試驗，由于項目不方便上傳，我就把最初的實驗工程分享給大家。該實驗用的是STM32F103C8作為主控，nrf24l01作為無線模塊，通過SPI協議進行數據傳輸。
  該模塊具有自動應答，自動重發機制，可以根據項目需求進行相關設置，該無線模塊可以輕松配置為1對多模式。而且對于數據的收、發模式切換相當簡單，只需修改一個寄存器便可完成：
  發送模式：L01_SetTRMode( TX_MODE );
  接受模式:  L01_SetTRMode( RX_MODE );
  在工程文件中，可以根據宏定義配置為接收模塊或者發送模塊：
  設置為發送：#define ML01TX_MODE 屏蔽該句便是接收。
  希望該貼對于初次接觸2.4G無線模塊的您有所幫助！

引腳定義

/**
******************************************************************************
* @file SPI/FullDuplex_SoftNSS/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
//該版本用于MM板，等待接收數據然后改為發送模式循環發送
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "platform_config.h"
#include "board.h"
#include "nRF24L01.h"
#include <string.h>
#define ML01TX_MODE
//#define ML01RX_MODE
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup SPI_FullDuplex_SoftNSS
* @{
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef SPI_InitStructure;
void RCC_Configuration(void);
/**
* @brief Main program
* @param None
* @retval None
*/
#ifdef ML01TX_MODE
int main(void)
{
u32 dly;
u8 tmp,x,testbuffer[10] = {"00000"};
u8 tx_couter = 0, itmp;
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
GPIO_Initial();
SPI_Initial();
L01_Init( );
L01_SetTRMode( TX_MODE );
L01_WriteHoppingPoint( 60 );
L01_SetSpeed( SPD_250K );
while( 1 )
{
u8 read;
for( dly = 0; dly < 8000000; dly ++ );
//LED_Off2();
L01_FlushRX( );
L01_FlushTX( );
L01_WriteTXPayload_Ack( (u8*)"123\r\n", strlen( "123\r\n" ) );
GPIO_SetBits( GPIOB, SPIML01_PIN_CE );
while( GPIO_ReadInputDataBit( GPIOB, SPIML01_PIN_IRQ ) != 0 );
while( ( tmp = L01_ReadIRQSource( ) ) == 0 );
GPIO_ResetBits( GPIOB, SPIML01_PIN_CE );
if( tmp & ( 1<<MAX_RT ) )
{
int i=0;
i+=1;
LED_Toggle( );
}
if( tmp & ( 1<<TX_DS ) )
{
// LED_Toggle2( );
L01_ClearIRQ( IRQ_ALL );
//修改為接收模式
L01_SetTRMode( RX_MODE );
while( 1 )
{
L01_FlushRX( );
L01_FlushTX( );
GPIO_SetBits( GPIOB, SPIML01_PIN_CE );
while( GPIO_ReadInputDataBit( GPIOB, SPIML01_PIN_IRQ ) != 0 );
while( ( tmp = L01_ReadIRQSource( ) ) == 0 );
GPIO_ResetBits( GPIOB, SPIML01_PIN_CE );
if( tmp & ( 1<<TX_DS ) )
{
// USART_SendStr( "????\r\n" );
}
else if( tmp & ( 1<<MAX_RT ) )
{
// USART_SendStr( "????\r\n" );
}
else if( tmp & ( 1<<RX_DR ) )
{
for( tmp = 0; tmp < 32; tmp ++ )
{
testbuffer[tmp] = 0;
}
tmp = L01_ReadRXPayload( testbuffer );
LED_Toggle2( );
L01_SetTRMode( TX_MODE );
L01_ClearIRQ( IRQ_ALL );
break ;
}
L01_ClearIRQ( IRQ_ALL );
}
}
L01_ClearIRQ( IRQ_ALL );
}
}
#else // ML01RX_MODE
int main(void)
{
u32 dly;
u8 tmp,x,testbuffer[10] = {"00000"};
u8 tx_couter = 0, itmp;
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
GPIO_Initial();
SPI_Initial();
L01_Init( );
L01_SetTRMode( RX_MODE );
L01_WriteHoppingPoint( 60 );
L01_SetSpeed( SPD_250K );
while( 1 )
{
L01_FlushRX( );
L01_FlushTX( );
GPIO_SetBits( GPIOB, SPIML01_PIN_CE );
while( GPIO_ReadInputDataBit( GPIOB, SPIML01_PIN_IRQ ) != 0 );
while( ( tmp = L01_ReadIRQSource( ) ) == 0 );
if( tmp & ( 1<<TX_DS ) )
{
// USART_SendStr( "????\r\n" );
}
else if( tmp & ( 1<<MAX_RT ) )
{
// USART_SendStr( "????\r\n" );
}
else if( tmp & ( 1<<RX_DR ) )
{
for( tmp = 0; tmp < 32; tmp ++ )
{
testbuffer[tmp] = 0;
}
tmp = L01_ReadRXPayload( testbuffer );
if( tmp == 5 && testbuffer[0] == '1' && testbuffer[1] == '2' && testbuffer[2] == '3' )
{
LED_Toggle( );
// rx_conter ++;
// itmp = rx_conter;
// testbuffer[0] = ( itmp / 10000 ) + '0';
// itmp %= 10000;
// testbuffer[1] = ( itmp / 1000 ) + '0';
// itmp %= 1000;
// testbuffer[2] = ( itmp / 100 ) + '0';
// itmp %= 100;
// testbuffer[3] = ( itmp / 10 ) + '0';
// itmp %= 10;
// testbuffer[4] = itmp + '0';
// testbuffer[5] = 0;
// LCD_Dis_Str( 6, 80, (char*)testbuffer );
}
}
L01_ClearIRQ( IRQ_ALL );
}
}
#endif
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
/* PCLK2 = HCLK/2 */
//RCC_PCLK2Config(RCC_HCLK_Div2);
// RCC_DeInit();//RCC?????
//
// RCC_HSICmd(ENABLE);//??HSI
// while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)//??HSI????
// {
// }
//
// if(1)
// {
// FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
// FLASH_SetLatency(FLASH_Latency_2);
//
// RCC_HCLKConfig(RCC_SYSCLK_Div1);
// RCC_PCLK1Config(RCC_HCLK_Div2);
// RCC_PCLK2Config(RCC_HCLK_Div1);
//
// RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_8);
// RCC_PLLCmd(ENABLE);
// while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
// {
// }
// RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
// while(RCC_GetSYSCLKSource() != 0x08)
// {
// }
//
//}
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
/* Enable SPIy Periph clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
}
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/