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Progrock

Dave Miller Member Profile All Messages By This Member #19435 Hans or anyone else, I am testing out my Progrock with the pr1.01a.hex file. I cannot connect to it with 9600 Baud but works perfectly on the communication side with 1200 Baud. Has anyone seen this? Note I did program the Tiny84 myself from a blank IC. Are there any setting I need to adjust when programming. I have not looked at the output yet. Thansk Dave Ve7HR
Hans Summers All Messages By This Member #19439 Hi Dave You have the fuses wrong on the blank chip you programmed.. The default fuse settings for the Tiny84A have the divide-by-8 clock flag enabled. So your ATtiny84A is running 8x too slowly, this explains why you have serial communication at 1200 baud not 9600 baud.? I think that you should correct the fuse settings - I am not sure if there may be some other undesirable side-effects if the clock is 8 times too slow.? 73 Hans G0UPL toggle quoted message Show quoted text On Wed, Dec 13, 2017 at 8:39 PM, Dave Miller <ve7hr@...> wrote: Hans or anyone else, I am testing out my Progrock with the pr1.01a.hex file. I cannot connect to it with 9600 Baud but works perfectly on the communication side with 1200 Baud. Has anyone seen this? Note I did program the Tiny84 myself from a blank IC. Are there any setting I need to adjust when programming. I have not looked at the output yet. Thansk Dave Ve7HR
Dave Miller Member Profile All Messages By This Member #19441 Thanks Hans, I figured that was the case. Thought I would check before I did much work. FYI here is a phase noise plot on my unit. Don't know much about PN application but I think it looks not bad. Or pretty good based on what my instrument can message. I see the frequency needs some tweaking. SA is GPSDO locked Thanks Dave toggle quoted message Show quoted text On Wed, Dec 13, 2017 at 10:24 AM, Hans Summers <hans.summers@...> wrote: Hi Dave You have the fuses wrong on the blank chip you programmed.. The default fuse settings for the Tiny84A have the divide-by-8 clock flag enabled. So your ATtiny84A is running 8x too slowly, this explains why you have serial communication at 1200 baud not 9600 baud.? I think that you should correct the fuse settings - I am not sure if there may be some other undesirable side-effects if the clock is 8 times too slow.? 73 Hans G0UPL On Wed, Dec 13, 2017 at 8:39 PM, Dave Miller <ve7hr@...> wrote: Hans or anyone else, I am testing out my Progrock with the pr1.01a.hex file. I cannot connect to it with 9600 Baud but works perfectly on the communication side with 1200 Baud. Has anyone seen this? Note I did program the Tiny84 myself from a blank IC. Are there any setting I need to adjust when programming. I have not looked at the output yet. Thansk Dave Ve7HR -- 72 de Dave VE7HR

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