What's wrong with my Timer?
jmspaggi
Posts: 629
Hi there,
I have code a kind of clock using timeout(1000). It works pretty well, but now, I want to add the minutes, and would like to use timeout (high, low) instead of the one using the ms.
After looking at Timer code, I have define
ONESECONDHIGH = 1; // 1000 / 569
ONESECONDLOW = 0xC1<<8 + 0x9D; // (1000%569)*115 = 49565
But using timeout (ONESECONDHIGH, ONESECONDLOW) instead of timeout (1000) make my clock running way faster than the regular one.
I suspect my constants ONESECONDLOW and ONESECONDHIGH to be wrong, because if I modify ONESECONDHIGH with 2, instead of 1, then I'm slowler than the 1s delay, but I can't figure what's wrong.
Has anyone any hint for me? Is ONESECONDLOW wrong?
Thanks,
Jean-Marc
I have code a kind of clock using timeout(1000). It works pretty well, but now, I want to add the minutes, and would like to use timeout (high, low) instead of the one using the ms.
After looking at Timer code, I have define
ONESECONDHIGH = 1; // 1000 / 569
ONESECONDLOW = 0xC1<<8 + 0x9D; // (1000%569)*115 = 49565
But using timeout (ONESECONDHIGH, ONESECONDLOW) instead of timeout (1000) make my clock running way faster than the regular one.
I suspect my constants ONESECONDLOW and ONESECONDHIGH to be wrong, because if I modify ONESECONDHIGH with 2, instead of 1, then I'm slowler than the 1s delay, but I can't figure what's wrong.
Has anyone any hint for me? Is ONESECONDLOW wrong?
Thanks,
Jean-Marc
Comments
I think I found where the issue was. It's regarding 0xC1<<8 + 0x9D which is interpreted as something about 1700 instead of the expected 49000.
So I removed 1, and revert the number, which gave me -15971, and I replaced my 0xC1<<8 + 0x9D by -15971, and look like it's now working fine.
JM