STM8L052C6无法下行程序

你好Omkar，
你能用MCU展示你的原理图吗？
您还可以使用STM8L052C6与我的电路板原理图进行交叉检查。我把它附在下面。
问候
Szymon



以下为原文




Hello Omkar,
Can you show your schematics with MCU?
You can also make a cross check with schematics of my board with STM8L052C6. I attach it below.
Regards
Szymon

我像你一样添加了电容器，现在进行了测试，但没有解决，我正在分享我的原理图
我为SWIM和NRST保留了2个焊盘，并直接焊接电线进行编程。 SWIM和NRST的默认状态为0.02 V.我使用ST-LINK V2进行编程。



以下为原文




I added capacitor as you did and tested now but not worked out, i am sharing my schematic
i kept 2 pads for SWIM and NRST and directly soldering there wire for programing. Default status of SWIM and NRST is 0.02 V. I am using ST-LINK V2 for programming.

你好Omkar，
感谢您分享原理图。我对它进行了审查。请在下面找到我的反馈：
 
VDDx，VDDA，VREF +，VLCD：连接正常（3.3V）
 
VSSx，VSSA，VREF-：连接正常（接地）
 
NRST / PA1引脚与地之间的100nF电容缺失
VDD1引脚与地之间的100nF电容缺失
VDDA / VREF +引脚与地之间的100nF + 1uF电容缺失
VDD2和地之间的100nF电容缺失
C24的价值未知。它应该是1uF。
 
从原理图看，似乎连接正常：您使用PA1 / NRST作为PAD1，接地为PAD2，SWIM作为PAD3，3.3V作为PAD4。将这四条线直接连接到ST-Link应该允许连接到MCU。请添加所有缺少的电容，然后重试。我没有在原理图上发现任何其他问题。
你提到你测量0.02V
SWIM和NRST引脚。这很奇怪，因为NRST引脚具有内部上拉电阻，您应测量VDD附近的值，因此在您的情况下为3.3V。请确保电源电压连接到MCU。
问候
 
Szymon



以下为原文




Hello Omkar,
Thanks for sharing the schematics. I made a review of it. Please find below my feedback:


VDDx, VDDA, VREF+, VLCD: connections are ok (3.3V)

VSSx, VSSA, VREF-: connections are ok (ground)

100nF capacitor between NRST/PA1 pin and ground is missing
100nF capacitor between VDD1 pin and ground is missing
100nF + 1uF capacitors between VDDA/VREF+ pins and ground are missing
100nF capacitor between VDD2 and ground is missing
C24 has unknown value. It should be 1uF.

From the schematics it seems that connection is ok: you use PA1/NRST as PAD1, ground as PAD2, SWIM as PAD3 and 3.3V as PAD4. Attaching these four wire directly to ST-Link should allow to connect to the MCU.Please add all missing capacitors and try again. I didn't find any other problem on your schematics.
You mentioned that you measure 0.02V on
SWIM and NRST pins. This is strange, because NRST pin has internal pull-up resistor and you should measure there value around VDD, so 3.3V in your case. Please make sure that supply voltage is attached to MCU.
Regards

Szymon

嗨，
它工作，非常感谢。然后我尝试做出改变。我只使用11和12针短和100nf，9针gnd，1针游泳。它编程。它解决了但是我的PCB仍然没有找到问题。我会在什么时候找到它让你知道。谢谢你。



以下为原文




Hi,
It worked, Thanks a lot. Then i try to make changes. I used just 11 and 12 pins short and 100nf, 9 pin gnd, 1 pin swim. It programmed. It worked out but not on my PCB still finding problem. I will let you know when i will find it. Thanks for it.