I tested MTP and it works great stand-alone, but now I have it in my project it appears to interfere with the current working directory or maybe the volume working directory.
My File structure is dynamic (sub-folders are named YYYYMMDD and my files are named HHMMSS by calling RTC time) and this prevents me from calling open files using a full path, and forces the use of the chdir() command.
I (think) I have isolated the odd behaviour into a working example, that successfully creates 3 files in the setup, but then fails once MTP is running in the loop. (code below)
Should I try and separate MTP and normal SD usage in code by disabling the interrupt?
Am I doing anything obviously stupid?
Any help much appreciated.
My File structure is dynamic (sub-folders are named YYYYMMDD and my files are named HHMMSS by calling RTC time) and this prevents me from calling open files using a full path, and forces the use of the chdir() command.
I (think) I have isolated the odd behaviour into a working example, that successfully creates 3 files in the setup, but then fails once MTP is running in the loop. (code below)
Should I try and separate MTP and normal SD usage in code by disabling the interrupt?
Am I doing anything obviously stupid?
Code:
#include <MTP.h>
#include <SdFat.h>
MTPStorage_SD storage;
MTPD mtpd(&storage);
volatile int status = 0;
volatile int writenow = 0;
volatile bool sdfound = 0;
volatile int MTPcount = 1;
void rtc_seconds_isr() {
if (MTPcount-- == 0) {
// digitalWrite(LED_BUILTIN, status);
Serial.println("I should be commented out");
writenow = true;
// status = !status;
if (sdfound)
MTPcount = 2;
else
MTPcount = 1;
}
}
SdFatSdioEX sd;
ArduinoOutStream cout(Serial); //create a serial out stream
File logfile;
#define FILE_BASE_NAME "000000"
const uint8_t BASE_NAME_SIZE = sizeof(FILE_BASE_NAME) - 1;
const uint8_t FILE_NAME_DIM = BASE_NAME_SIZE + 7;
char logfolder[] = "LOGFILES";
char subfolderName[] = "SUBFOLDR";
char logfileName[] = "1000_001.bin";
#define error(s) sd.errorHalt(F(s))
// -------------------------------------------------------------
void setup(void)
{
Serial.begin(19200);
pinMode(LED_BUILTIN, OUTPUT);
///////////////mtp setup/////////////////////////////////////////////////////////////
RTC_IER |= 0x10; // Enable seconds IRQ from RTC peripheral
NVIC_ENABLE_IRQ(IRQ_RTC_SECOND); // Enable seconds IRS function in NVIC
//////////////////////////////////////////////////////////////////////////////////////
Serial.println(F("Hello Teensy 3.6 dual CAN Test With Objects."));
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized:
if (!sd.begin()) {
Serial.println("card fail.");
}
else {
sd.chvol(); // make sd the current volume.
Serial.println("card initialized.");
}
createfile();
createfile();
createfile();
}
void loop() {
if (SD.begin()) {
sdfound = true;
mtpd.loop();
}
else {
sdfound = false;
}
if (writenow) {
createfile();
writenow = false;
}
}
void createfile() {
sd.chvol();
sd.vwd()->rewind(); // rewind to root directory
if (!sd.chdir()) { // change dir to root
Serial.println("chdir failed for Root");
}
if (!sd.exists(logfolder)) {
if (!sd.mkdir(logfolder)) {
Serial.println("Create LOGFILES folder failed");
}
}
if (!sd.chdir(logfolder)) {
Serial.println("chdir failed for LOGFILES");
}
if (!sd.exists(subfolderName)) {
if (!sd.mkdir(subfolderName)) {
Serial.println("Create SUBFOLDR folder failed");
}
}
if (!sd.chdir(subfolderName)) {
Serial.println("chdir failed for SUBFOLDR");
}
while (sd.exists(logfileName)) {
if (logfileName[BASE_NAME_SIZE + 1] != '9') {
logfileName[BASE_NAME_SIZE + 1]++;
} else if (logfileName[BASE_NAME_SIZE] != '9') {
logfileName[BASE_NAME_SIZE + 1] = '0';
logfileName[BASE_NAME_SIZE]++;
} else {
Serial.println("Can't create file name");
}
}
if (!logfile.open(logfileName, O_RDWR | O_CREAT)) {
Serial.println("open failed");
}
logfile.close();
}Any help much appreciated.