General descriptions of PIC timer variables used to control the timer: (you should be able to use these no matter what programming language you use):
T1CON.0 is the first bit of the timer configuration byte, this bit is used to start and stop the timer.
T1CON.0=1, starts the timer
T1CON.0=0, stops the timer
TMR1H is the timer value's high byte (bits 8-15)
TMR1L is the timer value's low byte (bits 0-7)
TMR1H = 0 'resets the timer value's high byte
TMR1L = 0 'resets the timer value's low byte
MyTime.Lowbyte = TMR1L 'puts the timer's low byte in MyTime's lower 8 bits
MyTime.Highbyte = TMR1H 'puts the timer's high byte in MyTime's upper 8 bits
the MyTime should be declared as a word, not a byte since it has to be 16 bits long to hold the whole 16 bit timer1 value
When writing to or reading from the timer, it is very important in which order it is done. When reading the timer values you have to read first the LOW then the HIGH byte. When writing the timer values write first the HIGH then the LOW, this is due to complications in how the timer works.
when I say 'timer value' I mean a number representing the amount of time since the timer was started. To convert between real time and timer1 value units, there seems to be a 5:1 ration between timer1 units and microseconds (5000 timer1 units = 1000 microsecond = 1 millisecond)