How can I write a specific value in a specif adress of my Flash? For example, I would like to write the value 0x55 in the adress 0x1fff of my flash, then if I use the command below: unsigned char code A = 0x55; I will write 0x55 in my Flash, but I don't know the adress, if I use this other command: unsigned char code A _AT_ 0X1FFF; I will know the adress but I don't know the value and I can't write somethink in this variable, becouse it is a code variable. How can I do this ?