SPIFFS and Timer intterupt will crash ESP32
Posted: Thu Feb 22, 2018 2:42 pm
I need to run some code every 1000 micro seconds. The timer code works on its own and the SPIFFS code works on its own. But as soon as you use a Timer with SPIFFS the ESP32 will crash and burn.
I just added a timer to the SPIFFS sample to show you it will reboot all the time.
If you comment out the TimerEnable the code will run. Here is the code.
And her eis the output from the Exception
So can you run a Timer with SPIFFS ? Or will they not work together at all ?
I just added a timer to the SPIFFS sample to show you it will reboot all the time.
If you comment out the TimerEnable the code will run. Here is the code.
Code: Select all
#include "FS.h"
#include "SPIFFS.h"
hw_timer_t * timer = NULL;
portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;
void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
Serial.printf("Listing directory: %s\n", dirname);
File root = fs.open(dirname);
if(!root){
Serial.println("Failed to open directory");
return;
}
if(!root.isDirectory()){
Serial.println("Not a directory");
return;
}
File file = root.openNextFile();
while(file){
if(file.isDirectory()){
Serial.print(" DIR : ");
Serial.println(file.name());
if(levels){
listDir(fs, file.name(), levels -1);
}
} else {
Serial.print(" FILE: ");
Serial.print(file.name());
Serial.print(" SIZE: ");
Serial.println(file.size());
}
file = root.openNextFile();
}
}
void readFile(fs::FS &fs, const char * path){
Serial.printf("Reading file: %s\n", path);
File file = fs.open(path);
if(!file || file.isDirectory()){
Serial.println("Failed to open file for reading");
return;
}
Serial.print("Read from file: ");
while(file.available()){
Serial.write(file.read());
}
}
void writeFile(fs::FS &fs, const char * path, const char * message){
Serial.printf("Writing file: %s\n", path);
File file = fs.open(path, FILE_WRITE);
if(!file){
Serial.println("Failed to open file for writing");
return;
}
if(file.print(message)){
Serial.println("File written");
} else {
Serial.println("Write failed");
}
}
void appendFile(fs::FS &fs, const char * path, const char * message){
Serial.printf("Appending to file: %s\n", path);
File file = fs.open(path, FILE_APPEND);
if(!file){
Serial.println("Failed to open file for appending");
return;
}
if(file.print(message)){
Serial.println("Message appended");
} else {
Serial.println("Append failed");
}
}
void renameFile(fs::FS &fs, const char * path1, const char * path2){
Serial.printf("Renaming file %s to %s\n", path1, path2);
if (fs.rename(path1, path2)) {
Serial.println("File renamed");
} else {
Serial.println("Rename failed");
}
}
void deleteFile(fs::FS &fs, const char * path){
Serial.printf("Deleting file: %s\n", path);
if(fs.remove(path)){
Serial.println("File deleted");
} else {
Serial.println("Delete failed");
}
}
void testFileIO(fs::FS &fs, const char * path){
File file = fs.open(path);
static uint8_t buf[512];
size_t len = 0;
uint32_t start = millis();
uint32_t end = start;
if(file && !file.isDirectory()){
len = file.size();
size_t flen = len;
start = millis();
while(len){
size_t toRead = len;
if(toRead > 512){
toRead = 512;
}
file.read(buf, toRead);
len -= toRead;
}
end = millis() - start;
Serial.printf("%u bytes read for %u ms\n", flen, end);
file.close();
} else {
Serial.println("Failed to open file for reading");
}
file = fs.open(path, FILE_WRITE);
if(!file){
Serial.println("Failed to open file for writing");
return;
}
size_t i;
start = millis();
for(i=0; i<2048; i++){
file.write(buf, 512);
}
end = millis() - start;
Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end);
file.close();
}
void setup(){
Serial.begin(115200);
if(!SPIFFS.begin()){
Serial.println("SPIFFS Mount Failed");
return;
}
timer = timerBegin(0, 80, true);
timerAttachInterrupt(timer, &timerIsr, true);
timerAlarmWrite(timer, 1000, true);
//timerAlarmEnable(timer);
listDir(SPIFFS, "/", 0);
writeFile(SPIFFS, "/hello.txt", "Hello ");
appendFile(SPIFFS, "/hello.txt", "World!\n");
readFile(SPIFFS, "/hello.txt");
deleteFile(SPIFFS, "/foo.txt");
renameFile(SPIFFS, "/hello.txt", "/foo.txt");
readFile(SPIFFS, "/foo.txt");
testFileIO(SPIFFS, "/test.txt");
}
void loop(){
}
void timerIsr() {
portENTER_CRITICAL(&timerMux);
portEXIT_CRITICAL(&timerMux);
}Code: Select all
ecoding 8 results
0x400d0bbc: timerIsr() at C:\Users\Jaco\AppData\Local\Temp\arduino_modified_sketch_175913/SPIFFS_Test.ino line 178
0x400815f4: _xt_lowint1 at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/freertos/./xtensa_vectors.S line 1105
0x40086300: _frxt_int_enter at /Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/freertos/./portasm.S line 119