sonoff 4ch pro OTA

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BertB
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sonoff 4ch pro OTA

#1 Post by BertB » 01 Jun 2020, 17:09

I would like to use a rev2 sonoff 4ch pro in a live situation, where it is very difficult to do regular updates.
Is it possible to use OTA for this device as well?

TD-er
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Re: sonoff 4ch pro OTA

#2 Post by TD-er » 01 Jun 2020, 19:54

As far as I know, this one only has 1M flash.
If so, then you need to use some minimal OTA update, like on other 1M modules.

If these Sonoff units currently have a larger flash, then it would make updating a lot easier.

BertB
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Re: sonoff 4ch pro OTA

#3 Post by BertB » 14 Jun 2020, 18:21

Well, it has the following characteristics:
ESP Board
ESP Chip ID: 13281048 (0xCAA718)
ESP Chip Frequency: 80 MHz
ESP Board Name: PLATFORMIO_ESP8285
Storage
Flash Chip ID: Vendor: 0x51 Device: 0x4014
Flash Chip Real Size: 1024 kB
Flash IDE Size: 1024 kB
Flash IDE Speed: 40 MHz
Flash IDE Mode: DOUT
Flash Writes: 0 daily / 0 boot
Sketch Size: 826 kB (48 kB free)
Max. OTA Sketch Size: 599 kB (614384 bytes)
OTA possible: false
OTA 2-step Needed: true
SPIFFS Size: 110 kB (27 kB free)
Page size: 256
Block size: 4096
Number of blocks: 27
Maximum open files: 5
Maximum path length: 32
I just flashed the latest 1 mb 8285 firmware:
Build:⋄ 20107 - Mega
System Libraries:⋄ ESP82xx Core 2_4_2, NONOS SDK 2.2.1(cfd48f3), LWIP: 2.0.3 PUYA support
Git Build:⋄ mega-20200608
Plugin Count:⋄ 3 [Normal] [Minimal 1M OTA]
Build Origin: Travis
Build Time:⋄ Jun 8 2020 21:13:25
Binary Filename:⋄ ESP_Easy_mega_20200608_minimal_core_242_ESP8285_1M_OTA
Build Platform:⋄ Linux-5.0.0-1031-gcp-x86_64-with-glibc2.2.5
Git HEAD:⋄ HEAD
Can you help me understand how the two step OTA works?

TD-er
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Re: sonoff 4ch pro OTA

#4 Post by TD-er » 14 Jun 2020, 21:36

In the downloaded ZIP file there is a small 2-step OTA bin file included (roughly 280k in size)
On the "minimal OTA" builds, you should be able to flash this small file.
It reads the existing settings to connect to WiFi and starts the webserver to allow loading a new "minimal OTA" bin file.

BertB
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Re: sonoff 4ch pro OTA

#5 Post by BertB » 14 Jun 2020, 21:57

Many thanks

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