Yup - just like I explained in that last email, by default Blackbook offers 19 MAX_FILES (BlackbookConst.h). One of those files is taken up by the checkpoint file (bb.cp_). So that leaves you with 18 files. Without deleting some files, you'll be stuck.
If you want to increase the number of files the file system can hold, increase the MAX_FILES definition. -David _____ From: Mayur Maheshwari [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 06, 2007 6:59 AM To: David Moss; tinyos-help@millennium.berkeley.edu Subject: Write Fails in BlackBook Files System Hi David It seems that write fails after 18 files have been written. (I am trying to write a new file every 3 seconds). Any idea why this should happen? I am using telosb with tinyos 2.0.1 The write app which I am using is as follows: module WriteCheckC { uses interface BBoot; uses interface BFileWrite; uses interface Boot; uses interface Leds; uses interface Timer<TMilli> as Timer0; } implementation { uint32_t fileNumber; char *reverseString(char temp[10]) { int k=0; int len = strlen(temp); while(k<(len+1)/2) { char t = temp[k]; temp[k] = temp[len-k-1]; temp[len-k-1] = t; k++; } temp[len] = '\0'; return temp; } char *getString(int i) { int j=i; int k=0; char temp[10]; while(j) { temp[k] = j%10 + 48; j /= 10; k++; } temp[k] = '\0'; return reverseString(temp); } event void Boot.booted() {} event void BBoot.booted(uint16_t totalNodes, uint8_t totalFiles, error_t error) { call Timer0.startPeriodic(3000); } event void Timer0.fired() { char *temp; char file1[20]; temp = getString(fileNumber); strcpy(file1, "b"); strcat(file1, temp); call BFileWrite.open(file1, sizeof(uint32_t)); } event void BFileWrite.opened(uint32_t len, error_t error) { uint16_t sense = 12; call Leds.led0Toggle(); call BFileWrite.append(&sense, sizeof(sense)); } event void BFileWrite.appended(void *data, uint16_t amountWritten, error_t error) { call BFileWrite.save(); } event void BFileWrite.saved(error_t error) { call BFileWrite.close(); } event void BFileWrite.closed(error_t error) {fileNumber++; call Leds.led2Toggle();} } Thanks, Mayur -- Mayur Maheshwari([EMAIL PROTECTED]) "Karmanye Vadhikaraste Ma Phaleshu Kadachana, Ma Karma Phala Hetur Bhurmatey Sangostva Akarmani"
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