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examples/SX128x_examples/Camera/238_StuartCAM_LoRa_Remote_Camera/238_StuartCAM_LoRa_Remote_Camera.ino Normal file
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/*******************************************************************************************************
Based on the OV2640 Arducam programs.
ArduCAM demo (C)2017 Lee
Web: http://www.ArduCAM.com
*******************************************************************************************************/
/*******************************************************************************************************
Programs for Arduino - Copyright of the author Stuart Robinson - 19/03/22
This program is supplied as is, it is up to the user of the program to decide if the program is
suitable for the intended purpose and free from errors.
*******************************************************************************************************/
/*******************************************************************************************************
Program Operation - This is a demonstration program that uses LoRa to transfer an image taken with an
OV2640 Arducam camera. The LoRa transfer is carried out using the data transfer functions of the
SX12XX-LoRa library. Program tested on Arduino DUE.
The Arducam software takes an image and saves it to a SD card. The filename is then passed across to
the LoRa library which transfers the file already on SD across to the remote receiver, which is running
program 239_StuartCAM_LoRa_Receiver or program 234_SDfile_Transfer_Receiver.
Serial monitor baud rate is set at 115200
*******************************************************************************************************/
#define USELORA //enable this define to use LoRa packets
//#define USEFLRC //enable this define to use FLRC packets
#include <ArduCAM.h> //get library here > https://github.com/ArduCAM/Arduino
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include "memorysaver.h" //part of Arducam library
#include <SX128XLT.h>
#include <ProgramLT_Definitions.h>
#include "Settings.h" //LoRa settings etc.
SX128XLT LoRa; //create an SX128XLT library instance called LoRa
#define ENABLEMONITOR //enable monitor prints
#define PRINTSEGMENTNUM //enable this define to print segment numbers
//#define DEBUG //enable this define to print debug info for segment transfers
//#define DEBUGSD //enable this defien to print SD file debug info
#define ENABLEFILECRC //enable this define to uses and show file CRCs
//#define DISABLEPAYLOADCRC //enable this define if you want to disable payload CRC checking
#define SDLIB //DTSDlibrary.h needs to use SD.h
#include "DTSDlibrary.h" //part of SX12XX library
#include "SDtransfer.h" //part of SX12XX library
char FileName[13]; //filename passed to both Arducam and LoRa routines
ArduCAM myCAM( OV2640, OV2640CS );
#include "OV2640.h" //include local Arducam code for OV2640 camera
void loop()
{
myCAMSaveToSDFile(FileName, sizeof(FileName)); //when finished FileName[] contains name of file saved on SD
Serial.print(FileName);
Serial.println(F(" Saved to SD card"));
SDsendFile(FileName, sizeof(FileName)); //transfer image via LoRa
Serial.println();
Serial.println();
delay(60000); //wait 60 seconds
}
void led_Flash(uint16_t flashes, uint16_t delaymS)
{
uint16_t index;
for (index = 1; index <= flashes; index++)
{
digitalWrite(LED1, HIGH);
delay(delaymS);
digitalWrite(LED1, LOW);
delay(delaymS);
}
}
void setup()
{
pinMode(LED1, OUTPUT); //setup pin as output for indicator LED
led_Flash(2, 125); //two quick LED flashes to indicate program start
SDsetLED(LED1); //setup LED pin for data transfer indicator
digitalWrite(OV2640CS, HIGH);
pinMode(OV2640CS, OUTPUT); //set the camera CS as an output
digitalWrite(SDCS, HIGH);
pinMode(SDCS, OUTPUT); //set the SDCS as an output
Serial.begin(115200);
Serial.println(__FILE__);
Wire.begin();
SPI.begin();
//Initialize SD Card
while (!SD.begin(SDCS))
{
Serial.println(F("SD Card Error - program halted"));
while (1);
}
Serial.println(F("SD Card detected"));
//Initialize camera
setupOV2640(OV2640resolution); //resolution choice, see Settings.h file
//Initialise LoRa device
if (LoRa.begin(NSS, NRESET, RFBUSY, DIO1, LORA_DEVICE))
{
Serial.println(F("LoRa device found"));
led_Flash(2, 125);
}
else
{
Serial.println(F("LoRa device error"));
while (1)
{
led_Flash(50, 50); //long fast speed flash indicates device error
}
}
Serial.println();
#ifdef USELORA
LoRa.setupLoRa(Frequency, Offset, SpreadingFactor, Bandwidth, CodeRate);
Serial.println(F("Using LoRa packets"));
#endif
#ifdef USEFLRC
LoRa.setupFLRC(Frequency, Offset, BandwidthBitRate, CodingRate, BT, Syncword);
Serial.println(F("Using FLRC packets"));
#endif
LoRa.printOperatingSettings();
Serial.println();
LoRa.printModemSettings();
Serial.println();
Serial.println();
#ifdef DISABLEPAYLOADCRC
LoRa.setReliableConfig(NoReliableCRC);
#endif
if (LoRa.getReliableConfig(NoReliableCRC))
{
Serial.println(F("Payload CRC disabled"));
}
else
{
Serial.println(F("Payload CRC enabled"));
}
}

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/*******************************************************************************************************
Based on the OV2640 Arducam programs by;
ArduCAM demo (C)2017 Lee
Web: http://www.ArduCAM.com
*******************************************************************************************************/
#define OV2640_CHIPID_HIGH 0x0A
#define OV2640_CHIPID_LOW 0x0B
void setupOV2640(uint8_t resolution);
void myCAMSaveToSDFile2();
void myCAMSaveToSDFile(char *ACfilename, uint8_t ACfilenamesize);
void setupOV2640(uint8_t resolution)
{
uint8_t vid, pid;
uint8_t temp;
//Reset the CPLD
myCAM.write_reg(0x07, 0x80);
delay(100);
myCAM.write_reg(0x07, 0x00);
delay(100);
while (1) {
//Check if the ArduCAM SPI bus is OK
myCAM.write_reg(ARDUCHIP_TEST1, 0x55);
temp = myCAM.read_reg(ARDUCHIP_TEST1);
if (temp != 0x55) {
Serial.println(F("OV2640 SPI interface Error!"));
delay(1000); continue;
} else {
Serial.println(F("OV2640 SPI interface OK")); break;
}
}
while (1) {
//Check if the camera module type is OV2640
myCAM.wrSensorReg8_8(0xff, 0x01);
myCAM.rdSensorReg8_8(OV2640_CHIPID_HIGH, &vid);
myCAM.rdSensorReg8_8(OV2640_CHIPID_LOW, &pid);
if ((vid != 0x26 ) && (( pid != 0x41 ) || ( pid != 0x42 ))) {
Serial.println(F("Can't find OV2640 module!"));
delay(1000); continue;
}
else {
Serial.println(F("OV2640 setup on I2C")); break;
}
}
myCAM.set_format(JPEG);
myCAM.InitCAM();
myCAM.OV2640_set_JPEG_size(resolution);
}
void myCAMSaveToSDFile2()
{
char str[8];
byte buf[256];
static int i = 0;
static int k = 0;
uint8_t temp = 0, temp_last = 0;
uint32_t length = 0;
bool is_header = false;
File outFile;
myCAM.flush_fifo(); //Flush the FIFO
myCAM.clear_fifo_flag(); //Clear the capture done flag
myCAM.start_capture(); //Start capture
Serial.println(F("start Capture"));
while (!myCAM.get_bit(ARDUCHIP_TRIG , CAP_DONE_MASK));
Serial.println(F("Capture Done"));
length = myCAM.read_fifo_length();
Serial.print(F("The fifo length is :"));
Serial.println(length, DEC);
if (length >= MAX_FIFO_SIZE) //384K
{
Serial.println(F("Over size."));
return ;
}
if (length == 0 ) //0 kb
{
Serial.println(F("Size is 0."));
return ;
}
k = k + 1; //Construct a file name
itoa(k, str, 10);
strcat(str, ".jpg");
outFile = SD.open(str, O_WRITE | O_CREAT | O_TRUNC); //Open the new file
if (!outFile) {
Serial.println(F("File open failed"));
return;
}
myCAM.CS_LOW();
myCAM.set_fifo_burst();
while ( length-- )
{
temp_last = temp;
temp = SPI.transfer(0x00);
//Read JPEG data from FIFO
if ( (temp == 0xD9) && (temp_last == 0xFF) ) //If find the end ,break while,
{
buf[i++] = temp; //save the last 0XD9
//Write the remain bytes in the buffer
myCAM.CS_HIGH();
outFile.write(buf, i);
//Close the file
outFile.close();
Serial.print(str);
Serial.println(F(" Image save OK"));
is_header = false;
i = 0;
}
if (is_header == true)
{
//Write image data to buffer if not full
if (i < 256)
buf[i++] = temp;
else
{
//Write 256 bytes image data to file
myCAM.CS_HIGH();
outFile.write(buf, 256);
i = 0;
buf[i++] = temp;
myCAM.CS_LOW();
myCAM.set_fifo_burst();
}
}
else if ((temp == 0xD8) & (temp_last == 0xFF))
{
is_header = true;
buf[i++] = temp_last;
buf[i++] = temp;
}
}
}
void myCAMSaveToSDFile(char *ACfilename, uint8_t ACfilenamesize)
{
byte buf[256];
char ACfilename2[ACfilenamesize+1];
static uint16_t i = 0;
static uint16_t k = 0;
uint8_t temp = 0, temp_last = 0;
uint32_t length = 0;
bool is_header = false;
File dataFile;
memset(ACfilename, 0, ACfilenamesize); //fill ACfilename array with nulls.
myCAM.flush_fifo(); //Flush the FIFO
myCAM.clear_fifo_flag(); //Clear the capture done flag
myCAM.start_capture(); //Start capture
Serial.println(F("Start capture "));
while (!myCAM.get_bit(ARDUCHIP_TRIG , CAP_DONE_MASK));
Serial.println(F("Done"));
length = myCAM.read_fifo_length();
Serial.print(F("FIFO length "));
Serial.println(length, DEC);
if (length >= MAX_FIFO_SIZE) //384K
{
Serial.println(F("FIFO over size"));
return ;
}
if (length == 0 ) //0 kb
{
Serial.println(F("FIFO size is 0"));
return ;
}
//Construct a file name
k = k + 1;
itoa(k, ACfilename2, 10);
strcat(ACfilename2, ".jpg");
ACfilename[0] = '/';
memcpy(ACfilename+1, ACfilename2, ACfilenamesize);
//Serial.print(F("Adjusted filename "));
//Serial.println(ACfilename);
dataFile = SD.open(ACfilename, O_WRITE | O_CREAT | O_TRUNC); //Open the new file
if (!dataFile)
{
Serial.print(ACfilename);
Serial.println(F(" File open failed"));
return;
}
myCAM.CS_LOW();
myCAM.set_fifo_burst();
while ( length-- )
{
temp_last = temp;
temp = SPI.transfer(0x00);
//Read JPEG data from FIFO
if ( (temp == 0xD9) && (temp_last == 0xFF) )
{
buf[i++] = temp; //save the last 0XD9
myCAM.CS_HIGH();
dataFile.write(buf, i); //Write the remain bytes in the buffer
dataFile.close(); //Close the file
Serial.print(ACfilename);
Serial.println();
is_header = false;
i = 0;
}
if (is_header == true)
{
//Write image data to buffer if not full
if (i < 256)
buf[i++] = temp;
else
{
//Write 256 bytes image data to file
myCAM.CS_HIGH();
dataFile.write(buf, 256);
i = 0;
buf[i++] = temp;
myCAM.CS_LOW();
myCAM.set_fifo_burst();
}
}
else if ((temp == 0xD8) & (temp_last == 0xFF))
{
is_header = true;
buf[i++] = temp_last;
buf[i++] = temp;
}
}
}

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examples/SX128x_examples/Camera/238_StuartCAM_LoRa_Remote_Camera/Settings.h Normal file
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/*******************************************************************************************************
Programs for Arduino - Copyright of the author Stuart Robinson - 19/03/22
This program is supplied as is, it is up to the user of the program to decide if the program is
suitable for the intended purpose and free from errors.
*******************************************************************************************************/
#define NSS 10 //select on LoRa device
#define NRESET 9 //reset on LoRa device
#define RFBUSY 7 //RFBUSY pin on LoRa device
#define DIO1 3 //DIO1 on LoRa device, used for RX and TX done
#define LED1 8 //On board LED, high for on
#define SDCS 30 //select pin for SD card
#define OV2640CS 22 //select for SPI on camera
#define LORA_DEVICE DEVICE_SX1280 //this is the device we are using
#define Monitorport Serial //Port where serial prints go
const uint32_t Frequency = 2445000000; //frequency of transmissions
const uint32_t Offset = 0; //offset frequency for calibration purposes
const int8_t TXpower = 10; //LoRa transmit power
//******* Setup LoRa modem parameters here ! ***************
const uint8_t Bandwidth = LORA_BW_1600; //LoRa bandwidth
const uint8_t SpreadingFactor = LORA_SF5; //LoRa spreading factor
const uint8_t CodeRate = LORA_CR_4_5; //LoRa coding rate
//******* Setup FLRC modem parameters here ! ***************
const uint8_t BandwidthBitRate = FLRC_BR_1_300_BW_1_2; //FLRC bandwidth and bit rate, 1.3Mbs
//const uint8_t BandwidthBitRate = FLRC_BR_0_260_BW_0_3; //FLRC 260kbps
const uint8_t CodingRate = FLRC_CR_1_0; //FLRC coding rate
const uint8_t BT = RADIO_MOD_SHAPING_BT_1_0; //FLRC BT
const uint32_t Syncword = 0x01234567; //FLRC uses syncword
const uint32_t TXtimeoutmS = 5000; //mS to wait for TX to complete
const uint32_t RXtimeoutmS = 60000; //mS to wait for receiving a packet
const uint32_t ACKdelaymS = 0; //ms delay after packet actioned and ack sent
const uint32_t ACKsegtimeoutmS = 75; //mS to wait for receiving an ACK before re-trying transmit segment
const uint32_t ACKopentimeoutmS = 750; //mS to wait for receiving an ACK before re-trying transmit file open
const uint32_t ACKclosetimeoutmS = 750; //mS to wait for receiving an ACK before re-trying transmit file close
const uint32_t DuplicatedelaymS = 10; //ms delay if there has been an duplicate segment or command receipt
const uint32_t NoAckCountLimit = 250; //if no NoAckCount exceeds this value - restart transfer
const uint8_t HeaderSizeMax = 12; //max size of header in bytes, minimum size is 7 bytes
const uint8_t DataSizeMax = 245; //max size of data array in bytes
const uint8_t DTSendAttempts = 10; //number of attempts sending a packet before a restart
const uint8_t StartAttempts = 2; //number of attempts to start transfer before a fail
const uint8_t SendAttempts = 5; //number of attempts carrying out a process before a restart
const uint8_t Maxfilenamesize = 32; //size of DTfilename buffer
const uint32_t FunctionDelaymS = 0; //delay between functions such as open file, send segments etc
const uint32_t PacketDelaymS = 1000; //mS delay between transmitted packets such as DTInfo etc
const uint16_t NetworkID = 0x3210; //a unique identifier to go out with packet
#ifdef USELORA
const uint8_t SegmentSize = 245; //number of bytes in each segment, 245 is maximum value for LoRa
#endif
#ifdef USEFLRC
const uint8_t SegmentSize = 117; //number of bytes in each segment, 117 is maximum value for FLRC
#endif
/******************************************************************************
Setup the resolution OV2640 required, the choices are;
OV2640_160x120,OV2640_176x144,OV2640_320x240,OV2640_352x288,OV2640_640x480,
OV2640_800x600, OV2640_1024x768,OV2640_1280x1024,OV2640_1600x1200
*******************************************************************************/
const uint8_t OV2640resolution = OV2640_640x480;