In pic18f45k80, the datasheet says one can read and write a byte (8bit) data in EEPROM. I need to write 3 bytes data at once and read it back at once because that 3 bytes data consists of two parameters of the lead acid battery which I have to measure. Are there any ways to do this, reading and writing a bulk of data in Pic Microcontroller? An example snippet will be more helpful.
Writing 3 bytes data in EEPROM
eeprompic
Related Solutions
You're reading the data after clock is low again. You'll have to do that between making the clock high and making it low. After the clock is low the slave is allowed to change the data line, not while it's high.
So reading should be like this:
wait
SCL low
SDA high
for each bit (8 bits)
SCL high <--------
wait
check and store received bit <--------
wait
SCL low <--------
wait
wait
do a NACK or ACK depending on if it is the last byte
The PIC18F47J53 doesn't have EEPROM memory.
As for Flash programming, I don't believe there's a simpler way to write to it than the one you tried. You just have to be careful not to write/erase an already used memory section.
Best Answer
If you're using XC8, include
xc.hheader file, and use the functionsand
So, to write/read 3 bytes, just call these functions three consecutive times, with different addresses each time, of course. There's no way to write/read 3 bytes at once, if that's what you meant.