ArduinoNRF24L01应用实例
Arduino(NANO) NRF24L01 应用实例
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软件准备:
microBox 库(https://github.com/wastel7/microBox):构建一个微型的命令行系统
Mirf 库(https://github.com/E-elektronic/Mirf):提供RF相关的核心功能
以上库请自行下载
硬件准备:
Arduino NANO板 x 2; NRF24L01 x 2; Other;
开发环境:
VS2017 + Arduino IDE(1.8.4)
硬件连接:
Server、Client 与 NRF24L01模块的连接方式完全相同。接线次序:VCC:3.3V; GND:GND; CSN: 7; CE:8; MOSI:11; SCK:13; IRQ:不接; MISO:12;
Client 代码(client.ino):
#include "microBox.h"
#pragma region UserDefined
#define DEBUG
//#undef DEBUG
#ifndef FIRSWOF_ADD
#define FIRSWOF_ADD
#endif // !FIRSWOF_ADD
#ifdef FIRSWOF_ADD
/*
* Hardware SPI:
* MISO -> 12
* MOSI -> 11
* SCK -> 13
*
* Configurable:
* CE -> 8
* CSN -> 7
*/
#include
#include "Mirf.h"
#include "nRF24L01.h"
#include "MirfHardwareSpiDriver.h"
//LED
#define RED_LED_PIN 2
#define GREEN_LED_PIN 3
#define BLUE_LED_PIN 4
#define LED_TRIGGER HIGH
//BEEP
#define BEEP_PIN 5
#define BEEP_TRIGGER LOW
uint8_t code[4] = { 0 };
void RedLedLight()
{
digitalWrite(RED_LED_PIN, LED_TRIGGER);
delay(50);
digitalWrite(RED_LED_PIN, !LED_TRIGGER);
}
void GreenLedLight()
{
digitalWrite(GREEN_LED_PIN, LED_TRIGGER);
delay(50);
digitalWrite(GREEN_LED_PIN, !LED_TRIGGER);
}
bool RfSend_Internal(uint8_t * data)
{
unsigned long time = millis();
Serial.print("cmd: ");
Serial.print(data[0], HEX);
Serial.print(" ");
Serial.print(data[1], HEX);
Serial.print(" ");
Serial.print(data[2], HEX);
Serial.print(" ");
Serial.println(data[3], HEX);
Mirf.setTADDR((byte *)"serv0");
Mirf.send(data);
while (Mirf.isSending())
{
if ((millis() - time) > 2000)
{
RedLedLight();
Serial.println("timeout on send cmd!");
return false;
}
}
while (!Mirf.dataReady())
{
if ((millis() - time) > 2000)
{
RedLedLight();
Serial.println("timeout on response from server!");
return false;
}
}
GreenLedLight();
Mirf.getData(data);
Serial.print("ack: ");
Serial.print(data[0], HEX);
Serial.print(" ");
Serial.print(data[1], HEX);
Serial.print(" ");
Serial.print(data[2], HEX);
Serial.print(" ");
Serial.println(data[3], HEX);
}
void RfSend(char **param, uint8_t parCnt)
{
if (parCnt == 1)
{
unsigned long uli = strtoul(param[0], 0, 16);
code[3] = (uint8_t)(uli & 0xff);
code[2] = (uint8_t)((uli & 0xff00)>>8);
code[1] = (uint8_t)((uli & 0xff0000)>>16);
code[0] = (uint8_t)((uli & 0xff000000)>>24);
RfSend_Internal(code);
}
else
Serial.println(F("Usage: rf-send hex-code(4 bytes), eg: rf-send AABBCCDD"));
}
void Test(char **param, uint8_t parCnt)
{
if (parCnt == 0)
{
;
}
else
Serial.println(F("Usage: test"));
}
void UsrInit()
{
pinMode(RED_LED_PIN, OUTPUT);
pinMode(GREEN_LED_PIN, OUTPUT);
pinMode(BLUE_LED_PIN, OUTPUT);
digitalWrite(RED_LED_PIN, !LED_TRIGGER);
digitalWrite(GREEN_LED_PIN, !LED_TRIGGER);
digitalWrite(BLUE_LED_PIN, !LED_TRIGGER);
Mirf.spi = &MirfHardwareSpi;
Mirf.init();
Mirf.setRADDR((byte *)"sndr0");
Mirf.payload = sizeof(unsigned long); //size:4
//Mirf.channel = 10;
Mirf.config();
}
#endif // FIRSWOF_ADD
#pragma endregion
#pragma region InternalFunc
char historyBuf[100];
char hostname[] = "tdxk";
PARAM_ENTRY Params[] =
{
{"hostname", hostname, PARTYPE_STRING | PARTYPE_RW, sizeof(hostname), NULL, NULL, 0},
{NULL, NULL}
};
void getMillis(char **param, uint8_t parCnt)
{
Serial.println(millis());
}
void freeRam(char **param, uint8_t parCnt)
{
extern int __heap_start, *__brkval;
int v;
Serial.println((int)&v - (__brkval == 0 ? (int)&__heap_start : (int)__brkval));
}
void writePin(char **param, uint8_t parCnt)
{
uint8_t pin, pinval;
if (parCnt == 2)
{
pin = atoi(param[0]);
pinval = atoi(param[1]);
digitalWrite(pin, pinval);
}
else
Serial.println(F("Usage: writepin pinNum pinvalue"));
}
void readPin(char **param, uint8_t parCnt)
{
uint8_t pin;
if (parCnt == 1)
{
pin = atoi(param[0]);
Serial.println(digitalRead(pin));
}
else
Serial.println(F("Usage: readpin pinNum"));
}
void setPinDirection(char **param, uint8_t parCnt)
{
uint8_t pin, pindir;
if (parCnt == 2)
{
pin = atoi(param[0]);
if (strcmp(param[1], "out") == 0)
pindir = OUTPUT;
else
pindir = INPUT;
pinMode(pin, pindir);
}
else
Serial.println(F("Usage: setpindir pinNum in|out"));
}
void readAnalogPin(char **param, uint8_t parCnt)
{
uint8_t pin;
if (parCnt == 1)
{
pin = atoi(param[0]);
Serial.println(analogRead(pin));
}
else
Serial.println(F("Usage: readanalog pinNum"));
}
void writeAnalogPin(char **param, uint8_t parCnt)
{
uint8_t pin, pinval;
if (parCnt == 2)
{
pin = atoi(param[0]);
pinval = atoi(param[1]);
analogWrite(pin, pinval);
}
else
Serial.println(F("Usage: writeanalog pinNum pinvalue"));
}
#pragma endregion
void setup()
{
Serial.begin(115200);
microbox.begin(&Params[0], hostname, true, historyBuf, 100);
microbox.AddCommand("free", freeRam);
microbox.AddCommand("millis", getMillis);
microbox.AddCommand("readanalog", readAnalogPin);
microbox.AddCommand("readpin", readPin);
microbox.AddCommand("setpindir", setPinDirection);
microbox.AddCommand("writeanalog", writeAnalogPin);
microbox.AddCommand("writepin", writePin);
#ifdef FIRSWOF_ADD
UsrInit();
microbox.AddCommand("test", Test);
microbox.AddCommand("rf-send", RfSend);
#endif // FIRSWOF_ADD
}
void loop()
{
microbox.cmdParser();
}
Server 代码(Server.ino):
/**
* An Mirf example which copies back the data it recives.
*
* Pins:
* Hardware SPI:
* MISO -> 12
* MOSI -> 11
* SCK -> 13
*
* Configurable:
* CE -> 8
* CSN -> 7
*
*/
#include
#include "Mirf.h"
#include "nRF24L01.h"
#include "MirfHardwareSpiDriver.h"
#define DEBUG
//#undef DEBUG
#define BEEP_PIN 2
#define BEEP_TRIGGER LOW
#define CHECKSUM data[0]
#define DATA_SET_INTERNAL(x,y,m,n) {/*data[0]=(uint8_t)x;*/data[1]=(uint8_t)y;data[2]=(uint8_t)m;data[3]=(uint8_t)n;}
#define SEND_DATA(x,y,m,n) {DATA_SET_INTERNAL(x,y,m,n);\
Serial.print("ack: ");\
Serial.print(data[0], HEX);\
Serial.print(" ");\
Serial.print(data[1], HEX);\
Serial.print(" ");\
Serial.print(data[2], HEX);\
Serial.print(" ");\
Serial.println(data[3], HEX);\
Mirf.send(data); }
//FLAG
#define ACK_OK 0xE0
#define ACK_NG 0xE1
#define ACK_ERROR 0xE2
unsigned long ulCode = 0ul;
void beep()
{
digitalWrite(BEEP_PIN, BEEP_TRIGGER);
delay(10);
digitalWrite(BEEP_PIN, !BEEP_TRIGGER);
}
//CRC-8, Widh:8, Poly:0x07, Init: 0x00
//RefIn:False, RefOut:False, XorOut:0x00
byte CalcCRC8(byte * pdata, unsigned int len)
{
byte crc = 0x00;
for (int i = 0; i < len; i++)
{
crc ^= ((*pdata++) & 0xFF);
for (byte j = 0; j < 8; j++)
{
if (crc & 0x80)
{
crc <<= 1;
crc ^= 0x07;
}
else
{
crc <<= 1;
}
}
}
return crc;
}
void setup()
{
pinMode(BEEP_PIN, OUTPUT);
digitalWrite(BEEP_PIN, !BEEP_TRIGGER);
Serial.begin(115200);
Mirf.spi = &MirfHardwareSpi;
Mirf.init();
Mirf.setRADDR((byte *)"serv0");
Mirf.payload = sizeof(unsigned long);
Mirf.config();
Serial.println("Listening...");
}
void loop()
{
byte data[Mirf.payload];
if (!Mirf.isSending() && Mirf.dataReady())
{
Mirf.getData(data);
Serial.print("cmd: ");
Serial.print(data[0], HEX);
Serial.print(" ");
Serial.print(data[1], HEX);
Serial.print(" ");
Serial.print(data[2], HEX);
Serial.print(" ");
Serial.println(data[3], HEX);
Mirf.setTADDR((byte *)"sndr0");
beep();
ulCode = (unsigned long)((unsigned long)data[0]<<24|(unsigned long)data[1]<<16|(unsigned long)data[2]<<8|data[3]);
CHECKSUM = CalcCRC8(data, Mirf.payload);
switch (ulCode)
{
case 0x000000:
SEND_DATA(CHECKSUM, ACK_OK, 0, 0);
Serial.println("[case 0x000000]");
break;
case 0x00112233:
SEND_DATA(CHECKSUM, ACK_OK, 0, 0);
Serial.println("[case 0x00112233]");
break;
default:
SEND_DATA(CHECKSUM, ACK_NG, 0, 0);
Serial.println("[case default]");
break;
}
}
}
测试图示:
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