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Add DIR_LS #3

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Add DIR_LS #3

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ebd0487
fix: HUB_FILE_OPEN return packet should not coupled to file id
Nov 25, 2023
59b0c4e
add HUB_DIR_LS
Nov 25, 2023
b5bc79f
fix: set leng of out buffer
Nov 26, 2023
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46 changes: 45 additions & 1 deletion Firmware/Hub-Mega2560/Hub-Mega2560.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -1396,6 +1396,50 @@ void comProcessCMD() {
pushPacket(HUB_SYS_IP, -1);
break;

case HUB_DIR_LS: // Todo: Implement for root directory /microSD
{
unsigned char skip = comInBuffer[0];
unsigned char count = 0;
length = 1;

// TODO: we may want to start a different dir if CD is implemented
File dir = SD.open("/");
while (true) {
File entry = dir.openNextFile();
if (!entry) {
// no more files
break;
}
if (!entry.isDirectory()){
// skip any dir; TODO: change when CD is implemented
if( skip!=0){
// skip entries as requested
skip--;
}else{
unsigned int slen=strlen(entry.name());
if( length+slen+3>255){
// printf("Buffer length exceeded!");
break;
}
memcpy(&serBuffer[length], entry.name(), slen);
length += slen;
serBuffer[length++] = 0;
serBuffer[length++] = (unsigned char)(entry.size() & 0xff);
serBuffer[length++] = (unsigned char)((entry.size() >> 8)&0xff);
count++;
}
}

entry.close();
}
dir.close();
serBuffer[0] = count;
serLen = length;
}

pushPacket(HUB_DIR_LS, -1);
break;

case HUB_FILE_OPEN:
// Check if file was previously opened
if (hubFile[comInBuffer[0]])
Expand All @@ -1418,7 +1462,7 @@ void comProcessCMD() {
// Send back file size
length = hubFile[comInBuffer[0]].size();
memcpy(serBuffer, (char*)&length, 4); serLen = 4;
pushPacket(HUB_FILE_OPEN, comInBuffer[0]);
pushPacket(HUB_FILE_OPEN, -1);
break;

case HUB_FILE_SEEK:
Expand Down