Hey guys, I'm a beginner programmer who is in a weather balloon project. I have programmed some sensors before but my launch date is in 2 more days and I've been working on this for hours upon hours. The farthest I have gotten with some sample code is a JPEG file on the SD card but wont open due to "this is not a valid bitmap file, or it's format is not currently supported".
The sample code on that website is almost identical to the one im using on the Arduino IDE except I've made changes for the code to run on hardware serial for a WF32. The hexadecimal data is being saved to the file correctly however I believe the data itself may have a few problems in the first line. I'll attach a notepad of the hexadecimal.
This may look like a lot to do just to help some noob but getting this working is VERY important to me and I really appreciate any help, thanks.
// LinkSprite.com
// Note:
// 1. SD must be formated to FAT16
// ***2. As the buffer of softserial has 64 bytes, so the code read 32 bytes each time
// 3. Please add the libaray to the lib path
// * SD card attached to SPI bus as follows:
// MOSI - pin
// MISO - pin
// CLK - pin
// SS - pin 51
#include <SD.h>
const int chipSelect_SD_default = 51;
const int chipSelect_SD = chipSelect_SD_default;
byte ZERO = 0x00;
byte incomingbyte;
#define mySerial Serial1 // Set Arduino pin 4 and 5 as softserial
long int a=0x0000,j=0,k=0,count=0,i=0;
uint8_t MH,ML;
boolean EndFlag=0;
File myFile;
void SendResetCmd();
void SetBaudRateCmd();
void SetImageSizeCmd();
void SendTakePhotoCmd();
void SendReadDataCmd();
void StopTakePhotoCmd();
void setup()
{
Serial.begin(38400);
Serial1.begin(38400);
mySerial.begin(38400);
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
// pinMode(10, OUTPUT);
// pinMode(chipSelect_SD_default, OUTPUT);
// digitalWrite(chipSelect_SD_default, HIGH);
pinMode(chipSelect_SD, OUTPUT);
digitalWrite(chipSelect_SD, HIGH);
if (!SD.begin(chipSelect_SD)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
}
void loop()
{
byte a[32];
int ii;
SendResetCmd();
delay(4000); //Wait 2-3 second to send take picture command
SendTakePhotoCmd();
while(mySerial.available()>0)
{
incomingbyte=mySerial.read();
}
myFile = SD.open("pic.jpg", FILE_WRITE); //<strong><span style="color: #ff0000;">The file name should not be too long</span></strong>
while(!EndFlag)
{
j=0;
k=0;
count=0;
SendReadDataCmd();
delay(20); //250 for regular
while(mySerial.available()>0)
{
incomingbyte=mySerial.read();
k++;
if((k>5)&&(j<32)&&(!EndFlag))
{
a[j]=incomingbyte;
if((a[j-1]==0xFF)&&(a[j]==0xD9)) //tell if the picture is finished
EndFlag=1;
j++;
count++;
}
}
for(j=0;j<count;j++)
{
if(a[j]<0x10)
Serial.print("0");
Serial.print(a[j],HEX); // observe the image through serial port
Serial.print(" ");
}
for(ii=0; ii<count; ii++)
myFile.write(a[ii]);
Serial.println();
i++;
}
myFile.close();
Serial.print("Finished writing data to file");
while(1);
}
void SendResetCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x26);
mySerial.write(ZERO);
}
void SetImageSizeCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x31);
mySerial.write(0x05);
mySerial.write(0x04);
mySerial.write(0x01);
mySerial.write(ZERO);
mySerial.write(0x19);
mySerial.write(0x11);
}
void SetBaudRateCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x24);
mySerial.write(0x03);
mySerial.write(0x01);
mySerial.write(0x2A);
mySerial.write(0xC8);
}
void SendTakePhotoCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x36);
mySerial.write(0x01);
mySerial.write(ZERO);
}
void SendReadDataCmd()
{
MH=a/0x100;
ML=a%0x100;
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x32);
mySerial.write(0x0c);
mySerial.write(ZERO);
mySerial.write(0x0a);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(MH);
mySerial.write(ML);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(0x20);
mySerial.write(ZERO);
mySerial.write(0x0a);
a+=0x20;
}
void StopTakePhotoCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x36);
mySerial.write(0x01);
mySerial.write(0x03);
}
I'm using a chipkit WF32 microprocessor but programming on the Arduino IDE.
I'm going to be working on this literally all day so if anyone as questions to ask please feel free. If you look at the hexadecimal the return address 76 00 32 00 00 is being printed before the start of the file FF D8. I'm not sure if that's supposed to be there along with the 5 bytes FE 00 24 5F 00 in between FF and E0.
