hi,
I want to write whole flash and then want to verify by reading. but, I am
not able to read perfectly. i tried to write(256 bytes each time) whole
flash recursively and after ultimate write, it started to read similar way.
I found that only 1sr reading gives 256 bytes acurate data. but, later
reading gives +-55 bytes data. I dont understand why later readings are
coming partially. I got the same result using Listen tool. please, someone
clarify me so that i can write and read whole flash. My configuration and
code used are mentioned below:
Mote type: TelosbB,
Flash: ST M25P80
uint32_t Waddr=0x00000, Raddr=0x00000;
event void Boot.booted() {
call SerialControl.start();
}
event void SerialControl.startDone(error_t e) {
call BlockWrite.erase();
}
event void BlockWrite.eraseDone(error_t result) {
nextWrite();
}
event void BlockWrite.writeDone(storage_addr_t x, void* buf, storage_len_t
y, error_t result) __attribute__((noinline)) {
if(writeCount == 5) // [lets try to make 5 successful consecutive
write/read]
readNext();
else
writeNext();
}
event void BlockRead.readDone(storage_addr_t x, void* buf, storage_len_t
rlen, error_t result) __attribute__((noinline)) {
printf(buf);
printfflush();
if(readCount != 5)
readNext();
}
void nextWrite(){
call BlockWrite.write(Waddr, &myString, sizeof(myString)));
Waddr = Waddr + 0x00100;
writeCount++;
}
void nextRead(){
call BlockRead.read(Raddr, &readBuffer, sizeof(readBuffer));
Raddr = Raddr + 0x00100;
readCount++;
}
pls ask me if you want more info. waiting for your reply
Regard
Shafiq
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