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| Low end PC-compatible Logic Analyzer suggestions |
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| darkspr1te:
--- Quote from: tggzzz on September 06, 2022, 12:14:49 am ---The OP might like to consider one of the "bus pirate" family of devices. Downloadable "personalities" are available, and they can also generate signals. For the avoidance of doubt, I haven't used them. --- End quote --- I have used bus pirate, Bus blaster and the logic sniffer from DP all are recommended products for signal debugging, sniffing and jtag access. I would recommend them as starting device's for any home lab. Of the 3 the bus pirate has the most uses as it can act as 4 channel LA, general purpose uart (i2s/spi/serial etc) , jtag adapter and more. darkspr1te |
| tautech:
MathWizard Your Siglent scope can do more than you imagine and you just need learn how. Below SPI decode with timebase set to max packets...it warns you and then just press the timebase control to enter Zoom mode and again set the timebase and/or H Pos to examine any packet. Ch1 yellow is Clk set to Timeout for SPI decoding with just 2 channels. For simple decodes do set the Trigger edge correctly and add some Timeout for a little more than a packet. Decode table also shown that you can scroll through which displays some 2600 bytes are decoded that you can examine the result in 2 ways, Pan the decode bar with the H Pos encoder or select Scroll and examine the results list. Always keep an eye on both the blue V arrows to know where you are within the capture and BTW this is NOT a capture but live continuous decoding that has been captured by pressing the Print button. |
| tggzzz:
--- Quote from: tautech on September 06, 2022, 05:18:30 am ---MathWizard Your Siglent scope can do more than you imagine and you just need learn how. Below SPI decode with timebase set to max packets...it warns you and then just press the timebase control to enter Zoom mode and again set the timebase and/or H Pos to examine any packet. Ch1 yellow is Clk set to Timeout for SPI decoding with just 2 channels. For simple decodes do set the Trigger edge correctly and add some Timeout for a little more than a packet. Decode table also shown that you can scroll through which displays some 2600 bytes are decoded that you can examine the result in 2 ways, Pan the decode bar with the H Pos encoder or select Scroll and examine the results list. Always keep an eye on both the blue V arrows to know where you are within the capture and BTW this is NOT a capture but live continuous decoding that has been captured by pressing the Print button. --- End quote --- I don't know whether the following are of interest to the OP, but when debugging at that kind of level I've always needed: * running silently until "Aargh" (or some other message) is encountered? Then displaying the messages that lead up to it? * ignoring everything except messages "Vpos xxxx" interleaved with other uninteresting messages?No tool can do everything, and there are good reasons why a tool shouldn't attempt to do something poorly. Basically "eierlegende Wollmilchsau" are a pain. The key is to know which tool to use for which job. |
| tautech:
--- Quote from: tggzzz on September 06, 2022, 08:06:26 am ---The key is to know which tool to use for which job. --- End quote --- And read the #15 post that clearly indicates MW is unclear about his scopes capabilities of which I hope I've demonstrated are adequate for his reported needs. We could also use Search or dedicated protocol triggering to analyze more complex requirements. |
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