Hello thanks for ESP32-PsRamFS ramdisk program.
Im using this useful program.
When I used readBytes(char *,sizs_t) function ,l could not read last char of this file.
followin is test program
#include "./PSRamFS.h"
#include "./pfs.h"
void setup() {
Serial.begin(115200);
esp32Info();
if (!PSRamFS.begin()) {
log_e("PSRamFS Mount Failed");
return;
}
if (PSRamFS.exists("/test.txt")) {
PSRamFS.remove("/test.txt");;
}
File t = PSRamFS.open("/test.txt", FILE_WRITE);
if (t) {
t.print("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
Serial.print("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
Serial.printf("\n/test.txt size= %d \n", t.size());
t.close();
}
File r = PSRamFS.open("/test.txt", FILE_READ);
int rsize = r.size();
if (r) {
int c = 0;
char rbuf[32];
int len = 0;
int total = 0;
do {
len = r.readBytes(rbuf, sizeof(rbuf));
for (int i = 0; i < len; i++) {
Serial.print(rbuf[i]);
}
Serial.printf("\nlen=%d", len);
total += len;
} while (len);
t.close();
Serial.printf("\ntotal=%d", total);
if (total != rsize) {
Serial.printf("\nwe can read all data except file end..Z");
}
}
Serial.println("\nEND");
}
void loop() {
// put your main code here, to run repeatedly:
}
void esp32Info(void) {
Serial.println("---------------------------- -");
uint64_t chipid;
chipid = ESP.getEfuseMac(); //The chip ID is essentially its MAC address(length: 6 bytes).
Serial.printf("ESP32 Chip ID = % 04X\r\n", (uint16_t)(chipid >> 32)); //print High 2 bytes
Serial.printf("Chip Revision % d\r\n", ESP.getChipRevision());
esp_chip_info_t chip_info;
esp_chip_info(&chip_info);
Serial.printf("Number of Core: % d\r\n", chip_info.cores);
Serial.printf("CPU Frequency: % d MHz\r\n", ESP.getCpuFreqMHz());
Serial.printf("Flash Chip Size = % d byte\r\n", ESP.getFlashChipSize());
Serial.printf("Flash Frequency = % d Hz\r\n", ESP.getFlashChipSpeed());
Serial.printf("Free Heap Size = % d\r\n", esp_get_free_heap_size());
Serial.printf("Total PSRAM: %d\r\n", ESP.getPsramSize());
Serial.printf("Free PSRAM: %d\r\n", ESP.getFreePsram());
Serial.printf("ESP - IDF version = % s\r\n", esp_get_idf_version());
Serial.println();
}
