Differences

This shows you the differences between two versions of the page.

--- t1600g-52ps [2022/08/18 08:41] – andyboeh
+++ t1600g-52ps [2022/09/04 20:18] (current) – andyboeh
@@ Line 79: / Line 79: @@
 </code>
-==== GPIO mapping ====
+==== Fan Control ====
-So far, a rather complete GPIO mapping has been found, but some GPIOs cannot be toggled from within OpenWrt. Since the cause is yet unknown, it is not possible to control the fan or LEDs.
+The fan control was measured, but not all required GPIOs could be found. Only Full speed and medium speed are possible so far.
-^ GPIO ^ Direction ^ Purpose ^
+==== Workarounds ====
-| 15 | Out | PoE Reset (500ms Low) |
-| 31 | In | Probably Fan RPM Input |
-| 20 | Out | System Fan RPM Input |
-| 22 | In | Power Supply Fan 1 RPM Input |
-| 23 | Out | Fan Green LED |
-| 8 | Out | Fan Orange LED |
-| 11 | In | Button PoE/Speed |
-| 12 | In | Button Reset |
-| 16 | Out | Speed Green LED |
-| 17 | Out | PoE Green LED |
-| 10 | Out | PoE Max Green LED |
-| 28 | Out | Fan Speed Out |
-| 19 | Out | Fan Speed Out |
-| 18 | Out | Fan Speed Out |
-and 26 are probably SDA/SCL for PoE, but this is not yet confirmed.
+Until proper kernel driver support comes up, PoE support and LED support need some hacks:
-==== Fan Control ====
+===== LEDs =====
+The following commands enable the port LEDs in automatic mode:
+<code>
+cd /sys/kernel/debug/rtl838x/led
+echo 0x0060f568 > led_glb_ctrl
+echo 0x00007dea > led_set_0_1
+echo 0xffffffff > led_copr_pmask_ctrl_0
+echo 0x000fffff > led_copr_pmask_ctrl_1
+echo 0xffffffff > led_combo_ctrl_0
+echo 0x000fffff > led_combo_ctrl_1
+</code>
-The fan control was measured, but can't be replicated since toggling these GPIOs does not work from within OpenWrt:
+===== PoE =====
-  * Low - Low - Low = Full Speed
+The PoE modules and the kernel hwmon driver work, but the ICs are not in the correct mode during startup. In order to enable them, the package `i2c-tools` needs to installed and a startup script is required:
-  * Low - High - High = Medium
-  * High - High - High = Low Speed
+<code>
+i2cset -y 0 0x30 0x12 0xff
+for i in `seq 3 14`; do
+echo 1 > /sys/class/hwmon/hwmon$i/in0_enable
+echo 1 > /sys/class/hwmon/hwmon$i/in1_enable
+echo 1 > /sys/class/hwmon/hwmon$i/in2_enable
+echo 1 > /sys/class/hwmon/hwmon$i/in3_enable
+done
+</code>
 ===== References =====
   * [[https://www.tp-link.com/us/business-networking/smart-switch/t1600g-52ps/ | Product page]]
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