Comments (8)
syssi
commented on September 23, 2024
If the CRC is wrong your inverter should respond with <<< NAK. I don't see any responses so I assume your inverter isn't connected properly to your ESP. Please double check the RX/TX lines between the ESP and the RS232 converter as well as the RX/TX lines between the RS232 converter and the inverter. How did you power the RS232 converter? In most cases these converter boards must be powered twice (low voltage level + high voltage level).
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PhilKloppers
commented on September 23, 2024
I've tried alternately swapping RX/TX on both ends without success. The RS232 is a MAX232-based board. I'm providing power on the 3.3v side from the ESP, and it's getting 12v from the inverter. The datasheet says it doesn't actually need voltage on the RS232 side as it has a charge pump onboard to boost the level to 12v from the 3.3v supply, but it's connected anyway. The only response I've ever seen in the log was an echo of the sent data, and that only when I disconnected the ground line to the MAX232 board. I assumed that this means that the RX/TX on the ESP side are incorrect in that configuration. I will try to connect the RS232+ESP to a USB-Serial cable I have and try sending data to see if it gets through - at least I can then confirm orientation! Failing that I'll have to dig the oscilloscope out...
Update 1 - I connected the USB-Serial cable to the MAX board with the SolarPower app running on the PC and saw the following in the log:
[13:09:01][D][uart_debug:158]: >>> "QMODI\xC3\x81\r"
[13:09:01][D][uart_debug:158]: <<< "QPI\r"
[13:09:03][D][uart_debug:158]: <<< "QPI\r"
[13:09:03][D][uart_debug:158]: >>> "QFLAG\xC2\x98t\r"
[13:09:03][D][uart_debug:158]: <<< "QPI\r"
[13:09:06][D][uart_debug:158]: <<< "^P003PI\r"
[13:09:08][D][uart_debug:158]: <<< "^P003PI\r"
[13:09:09][D][uart_debug:158]: <<< "^P003PI\r"
[13:09:10][D][uart_debug:158]: <<< "^P003PI\r"
[13:09:11][D][uart_debug:158]: <<< "^P006GMN\xDDW\r"
[13:09:13][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:14][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:15][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:15][D][uart_debug:158]: >>> "QPI\r"
[13:09:15][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:17][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:17][D][uart_debug:158]: >>> "^P003PI\r"
[13:09:17][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:19][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:19][D][uart_debug:158]: >>> "^P005PIq\xC2\x8B\r"
[13:09:19][D][uart_debug:158]: <<< "^P005PIq\x8B\r"
[13:09:21][D][uart_debug:158]: <<< "^P006GMN\xDDW\r"
It's clearly receiving the requests from the app, so the MAX232 board is working and the RX/TX must be correct, right?
Update 2 - I sniffed the serial traffic on the PC, which showed the following:
+0.0000056 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 35 50 49 71 8b 0d ^P005PIq..
+0.0040083 IRP_MJ_READ UP 0x00000000 5e 50 30 30 35 50 49 71 c2 8b 0d ^P005PIq...
+0.0000042 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0042622 IRP_MJ_READ UP 0x00000000 51 50 49 52 49 c3 b8 54 0d QPIRI..T.
+0.0000042 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0000045 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0041469 IRP_MJ_READ UP 0x00000000 51 50 49 47 53 c2 b7 c2 a9 0d QPIGS.....
+0.0000049 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0000047 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0042847 IRP_MJ_READ UP 0x00000000 51 4d 4f 44 49 c3 81 0d QMODI...
+0.0000048 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0000096 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 33 50 49 0d ^P003PI.
+0.0040406 IRP_MJ_READ UP 0x00000000 51 46 4c 41 47 c2 98 74 0d QFLAG..t.
So on the PC side it's also receiving the commands from the ESP.
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syssi
commented on September 23, 2024
Your first paragraphs sounds good. The log is a bit weird. What did you do exactly? In general the should be one response to one request. Could you capture some traffic between the SolarPower app and your inverter without noise of the third party (the ESPHome implementation)? This should help to identify the protocol of your inverter and to make sure the ESPHome component is compatible or not.
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PhilKloppers
commented on September 23, 2024
Sure! (The ESP-Home log is just showing both sides trying to discover, so won't actually be a coherent exchange).
Here's some of the sniffed serial data between the app and the inverter:
+0.0000061 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 36 56 46 57 f6 e6 0d ^P006VFW...
+0.0040702 IRP_MJ_READ UP 0x00000000 5e 44 30 32 30 30 35 34 30 32 2c 30 34 30 32 35 2c 30 30 30 … ^D02005402,04025,000…
+0.0000056 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 49 52 49 ee 38 0d ^P007PIRI.8.
+0.0039939 IRP_MJ_READ UP 0x00000000 5e 44 30 38 39 32 34 30 30 2c 32 33 33 2c 32 34 30 30 2c 35 … ^D0892400,233,2400,5…
+0.0000093 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 36 46 57 53 c5 43 0d ^P006FWS.C.
+0.0041065 IRP_MJ_READ UP 0x00000000 5e 44 30 33 39 30 30 2c 30 2c 30 2c 30 2c 30 2c 30 2c 30 2c … ^D03900,0,0,0,0,0,0,…
+0.0000063 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 30 6d 9d 0d ^P007PRI0m..
+0.0041183 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 31 2c 31 34 2c 39 36 31 33 32 31 31 30 31 30 … ^D0401,14,9613211010…
+0.0000063 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 47 53 30 29 b6 0d ^P007PGS0)..
+0.0041749 IRP_MJ_READ UP 0x00000000 5e 44 31 31 33 31 2c 35 2c 30 30 2c 32 33 35 37 2c 35 30 31 … ^D1131,5,00,2357,501…
+0.0000065 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 30 6d 9d 0d ^P007PRI0m..
+0.0040325 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 31 2c 31 34 2c 39 36 31 33 32 31 31 30 31 30 … ^D0401,14,9613211010…
+0.0000092 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 31 7d bc 0d ^P007PRI1}..
+0.0040749 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 31 2c 31 34 2c 39 36 31 33 32 31 31 30 31 30 … ^D0401,14,9613211010…
+0.0000061 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 47 53 31 39 97 0d ^P007PGS19..
+0.0040898 IRP_MJ_READ UP 0x00000000 5e 44 31 31 33 31 2c 35 2c 30 30 2c 32 33 35 38 2c 35 30 31 … ^D1131,5,00,2358,501…
+0.0000074 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 36 46 57 53 c5 43 0d ^P006FWS.C.
+0.0040879 IRP_MJ_READ UP 0x00000000 5e 44 30 33 39 30 30 2c 30 2c 30 2c 30 2c 30 2c 30 2c 30 2c … ^D03900,0,0,0,0,0,0,…
+0.0000057 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 31 7d bc 0d ^P007PRI1}..
+0.0040908 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 31 2c 31 34 2c 39 36 31 33 32 31 31 30 31 30 … ^D0401,14,9613211010…
+0.0000059 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 32 4d df 0d ^P007PRI2M..
+0.0040996 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000059 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 33 5d fe 0d ^P007PRI3]..
+0.0041905 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000064 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 34 2d 19 0d ^P007PRI4-..
+0.0041518 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000084 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 35 3d 38 0d ^P007PRI5=8.
+0.0041289 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000066 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 36 0e 5b 0d ^P007PRI6.[.
+0.0041180 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000064 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 37 1d 7a 0d ^P007PRI7.z.
+0.0040962 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
+0.0000066 IRP_MJ_WRITE DOWN 0x00000000 5e 50 30 30 37 50 52 49 38 ec 95 0d ^P007PRI8...
+0.0040332 IRP_MJ_READ UP 0x00000000 5e 44 30 34 30 30 2c 30 30 2c 30 30 30 30 30 30 30 30 30 30 … ^D0400,00,0000000000…
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syssi
commented on September 23, 2024
Unfortunately this protocol isn't supported by the pipsolar component.
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PhilKloppers
commented on September 23, 2024
Ah! That would explain all the difficulties!😂 I did see the protocol listed in the documents in this issue #39 (specifically this one I think: https://github.com/ardupic/voltronic-inverter-communication-protocols/blob/main/Infini-Solar%20V%26VII%26VIII%26VIV%26%20V%20II%206K%20LV%20Split-Phase%26TWIN%20protocol%20202205....xlsx)
Are there any plans to include the protocol, and if not, could you suggest any package that could work? I also don't mind doing the legwork to get it included if that's feasible?
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SeByDocKy
commented on September 23, 2024
As far I know for MPI models, there is no CRC ....
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syssi
commented on September 23, 2024
@PhilKloppers I've fixed and improved the protocol test YAML. Could you give it another try?
https://github.com/syssi/esphome-pipsolar/blob/main/tests/esp8266-test-protocols.yaml
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