PCB and schematic diagram are at http://www.openedv.com/thread-297984-1-1.html to download, not found a way to upload

CodePudding user response:

You chose a SW download!!!!!!
Why not use USART1 or two mouth? !

CodePudding user response:

Brother, you can not help you solve problems, but to see you in the circuit board, sad, want to tell you two things:
1: a circuit design software, can draw schematic and PCB, useful, and free, and EDA, url: lceda. Cn
2: there are many online play board manufacturers, cheap, such as jia gen, 10 x10cm within package mail only 5 yuan, twice a month is favorable, beyond just 20 yuan, draw PCB hair in the past, will be back in three days, so much faster than you, also more provinces,
Want to ask: you should be self-taught, I saw you playing board, surprise your skill and patience, spends much of her time to do it? Do you want for a week?

CodePudding user response:

With sw because before made of pull out general version of the base, and then use sw can download so later need not general board, paint, corrosion, welding, and then can't use

CodePudding user response:

Because the principle diagram is it before, so their draw PCB, printing, transfer printing, corrosion, welding, spent a day

CodePudding user response:

You will sooner or later have to be a cool guy!

CodePudding user response:

Visual clock circuit part processes is not good, first take a look at the power supply is abnormal

CodePudding user response:

The solution? To see if the JTAG mode can detect, or look at flashdownload configuration is right there

CodePudding user response:

Should be the power supply problem, met once before, did you measure chip VDDA electricity,

CodePudding user response:

I saw you choose the download speed of 20 m, likely this is too big, the chip is not supported, jlink download only need four wires, VCC SWCLK GND swdio clock line cable

CodePudding user response:

Power electric checked, all is normal, download speed, to mend, to 5 m also not line,

CodePudding user response:

Drawings to see if you have any questions

CodePudding user response:

Went through the whole, found the principle diagram, PCB is no problem, there is a problem that is not directly see the pin, but look at the text on the schematic diagram,,,, on the basis of text, and the chip to expand on the plate when move the pin,,,
Thank you for your help

CodePudding user response:

Oh, carefully is very important

CodePudding user response:

Print, corrosion... The 30 years of money skills! Pro!
Out of date, and not willing to can use off-the-shelf switching board, too hard,

CodePudding user response:

I use USB to TTL under 10 yuan, through UART1 PA9/PA10 &gnd, novice a successful,

CodePudding user response:

A useless MAO, chips, copper clad, solder wire, electric, jlink, corrosive liquid, row needle, also make the (usb transfer is the most main TTL to buy now, so give up)

CodePudding user response:

Grasp the TCK signal output u, if have shorten the line length, equidistant

CodePudding user response:

See you in the latest status of atomic BBS, or carefully , but let me congratulate you on your problem solving

CodePudding user response:

The hardware problem is bad to say, the key is to don't know if it is hardware or software, we advise other download method, such as USB to TTL, and don't obsess over the one way

CodePudding user response:

Jink I also download, you this is not the environment is not to do well the board that part of the power supply

CodePudding user response: