My transmitter code is like that
//This is the A program: COM84
#include <SoftwareSerial.h>
#define DEBUG
//==== pin assignment====
#define E32_M0 8
#define E32_M1 9
#define E32_RXD 10
#define E32_TXD 11
#define E32_AUX 12
//=======Operation_Mode_Para=====
#define Mode_Normal 0
#define Mode_Wake_Up 1
#define Mode_Power_Saving 2
#define Mode_Sleep 3
//Para_Setting_CMD
#define Para_Save 0xC0
#define Para_One 0xC2
//Para_Setting_UART_Par_bit
#define pbit_8N1 0b00
#define pbit_8O1 0b01
#define pbit_8E1 0b10
//Baudrate
#define brate_1200 0b000
#define brate_2400 0b001
#define brate_4800 0b010
#define brate_9600 0b011
#define brate_19200 0b100
#define brate_38400 0b101
#define brate_57600 0b110
#define brate_115200 0b111
//Air data rate
#define adrate_0k3 0b000
#define adrate_1k2 0b001
#define adrate_2k4 0b010
#define adrate_4k8 0b011
#define adrate_9k6 0b100
#define adrate_19k2 0b101
//==para for the option
enum TransEnBit {Transparent, Fixed};
enum IODriverMode {open_collector, push_pull};
enum WirelessWakeUpTime {
WUTms250, WUTms500, WUTms750, WUTms1000, WUTms1250, WUTms1500, WUTms1750, WUTms2000
};
enum FECSwitch {FECoff, FECon};
enum TransPower {TPdbm20, TPdbm17, TPdbm14, TPdbm10};
//BYTE shifting
#define HEAD 0
#define ADDH 1
#define ADDL 2
#define SPED 3
#define CHAN 4
#define OPTION 5
//SPED_USART_bit shift
#define SPED_USART_pbit 6
#define SPED_USART_brate 3
#define SPED_USART_adrate 0
//OPTION bit shift
#define OPT_Mode 7
#define OPT_IOMode 6
#define OPT_Waketime 3
#define OPT_FEC_switch 2
#define OPT_Transmission_power 0
#define Boradcast_addr 0xFFFF
typedef struct {
uint16_t addr;
uint8_t channel;
}Device;
//===============********User Define*************==================
#define Operation_Mode Mode_Normal
#define Para_Setting_CMD Para_Save
#define Para_Setting_ADDR 0xAAAA
#define Para_Setting_UART_pbit pbit_8N1
#define Para_Setting_UART_brate brate_9600
#define Para_Setting_UART_adrate adrate_2k4
#define Para_Setting_ChannelinM 433
#define Para_Setting_TranEnbit Fixed
#define Para_Setting_IODriverMode push_pull
#define Para_Setting_WirelessWakeUpTime WUTms1000
#define Para_Setting_FECSwitch FECon
#define Para_Setting_TransPower TPdbm10
/*
you own device should match with the above setting
Device device_name(device_address, device_channel)
*/
Device deviceA = {0xAAAA, 0x17};
Device deviceB = {0xBBBB, 0x17};
//=================reg_para_set=============
#define Para_setting_Channel_reg (Para_Setting_ChannelinM-410)
void E32_ChangeMode(int mode);
void config_return_saved();
void E32_set_config();
void E32_sendmessage(uint16_t target_addr,uint8_t target_channel, uint8_t* data, uint8_t datalen);
void mainPorgram(char CMD);
SoftwareSerial E32Serial(E32_TXD, E32_RXD); // RX, TX swap intensionally
//==========main==========
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
E32Serial.begin(9600);
pinMode(E32_M0, OUTPUT);
pinMode(E32_M1, OUTPUT);
pinMode(E32_AUX, INPUT);
#ifdef DEBUG
Serial.write(0);
Serial.write(1);
#endif
//wait until power on self-check complete
while(!digitalRead(E32_AUX)); //This wait until it become high
E32_ChangeMode(Mode_Sleep);
E32_set_config();
E32_ChangeMode(Mode_Normal);
}
void loop() {
// put your main code here, to run repeatedly:
#ifdef DEBUG
if(Serial.available() > 0){
char inChar = Serial.read();
//E32Serial.write(inChar);
Serial.write(inChar);
mainPorgram(inChar);
}
#endif
if(E32Serial.available() > 0){
char inChar = E32Serial.read();
Serial.write(inChar);
}
}
void mainPorgram(char CMD){
uint8_t dataA[] = {0xA1, 0xA2, 0xA3, 0xA4};
uint8_t dataB[] = {0xB1, 0xB2, 0xB3, 0xB4};
switch(CMD){
case 'a':
E32_sendmessage(deviceB.addr, deviceB.channel, dataA, sizeof(dataA));
break;
case 'b':
E32_sendmessage(Boradcast_addr, deviceB.channel, dataB, sizeof(dataB));
break;
case '\0':
break;
default:
break;
}
}
void E32_ChangeMode(int mode){
//Mode 0: M1:0; M0:0
//Mode 1: M1:0; M0:1
//Mode 2: M1:1; M0:0
//Mode 3: M1:1; M0:1
/*
if(mode & 0b01){digitalWrite(E32_M0,HIGH);Serial.print("I am here");}
else{ digitalWrite(E32_M0,LOW); }
if(mode & 0b10){digitalWrite(E32_M1,HIGH);}
else{ digitalWrite(E32_M1,LOW); }
*/
digitalWrite(E32_M0,(mode & 0b01));
digitalWrite(E32_M1,(mode & 0b10));
while(!digitalRead(E32_AUX)); //This wait until it become high
}
void config_return_saved(){
// C1 C1 C1
E32Serial.write(193);
E32Serial.write(193);
E32Serial.write(193);
while(!digitalRead(E32_AUX)); //This wait until it become high
}
void E32_set_config(){
E32Serial.write(Para_Setting_CMD);
E32Serial.write((Para_Setting_ADDR & 0xFF00) >> 2*4);
E32Serial.write(Para_Setting_ADDR & 0x00FF);
E32Serial.write( (Para_Setting_UART_pbit << SPED_USART_pbit) |\
(Para_Setting_UART_brate << SPED_USART_brate) |\
(Para_Setting_UART_adrate << SPED_USART_adrate));
E32Serial.write(Para_setting_Channel_reg);
E32Serial.write(Para_Setting_TranEnbit << OPT_Mode |\
Para_Setting_IODriverMode << OPT_IOMode |\
Para_Setting_WirelessWakeUpTime << OPT_Waketime |\
Para_Setting_FECSwitch << OPT_FEC_switch |\
Para_Setting_TransPower << OPT_Transmission_power);
while(!digitalRead(E32_AUX)); //This wait until it become high
}
void E32_sendmessage(uint16_t target_addr,uint8_t target_channel,uint8_t* data, uint8_t datalen){
#ifdef DEBUG
// Serial.write(target_addr >> 8);
// Serial.write(target_addr);
// Serial.write(target_channel);
// for(uint8_t i = 0; i < datalen; i++)
// Serial.write(data[i]);
#endif
E32Serial.write(target_addr >> 8);
E32Serial.write(target_addr);
E32Serial.write(target_channel);
for(uint8_t i = 0; i < datalen; i++)
E32Serial.write(data[i]);
while(!digitalRead(E32_AUX)); //This wait until it become high
}
I am using lora sx1278 e32ttl 100 and the datasheet is that
http://www.ebyte.com/en/product-view-news.aspx?id=130
serial monitor is looking like that
I upload reveiver code in comments because of character limit
