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--- technik:pow-hvm6.2m_with_tasmota [2024/11/16 10:55]
ich [OLED display]
+++ technik:pow-hvm6.2m_with_tasmota [2025/11/04 10:49] (current)
marten
@@ Line 34: / Line 34: @@
 #define USE_UNIVERSAL_DISPLAY                // new driver with display.ini file
 </file>
+Many FW upload tools failed for my ESP32C3, but the direct USB upload from VS Code worked well.
 ===== OLED display =====
@@ Line 41: / Line 43: @@
 {{:technik:option_a_3.png?200|}}
- Now I started the display with the following commands on the console.
+The display has another ON/OFF buttom on Tasmotas main screen. Now I started the display with the following commands on the console.
 <code txt console commands>
@@ Line 48: / Line 50: @@
 DisplayModel 17       (new driver with display.ini file and OptionA3)
 </code>
+Example display: [[https://de.aliexpress.com/item/1005006895921013.html?|1.3inch OLED]]
 ===== Tasmota ModBus Script =====
-I needed the script to access my Modbus based solar inverter PowMr. PowMr inverter are all very similar. Luckily
+I needed the script to access/read my Modbus based solar inverter PowMr. PowMr inverter are all very similar. Luckily
   * [[https://github.com/leodesigner/powmr_comm]]
 investigated already on the registers for these PowMr inverters.
-This Tasmota Scripting was the most ugly part of the project.
+HW: GPIO20/21(Rx,Tx) configured as ''None'' where used.
+Tasmota Scripting was the most ugly part of the project.
   - Section >M needs to define Tx and Rx-Mask at different lines and locations which makes the code unreadable
@@ Line 153: / Line 159: @@
 {{:technik:config_pzem.png?200|}}
+===== Tasmota-Berry ModBus Script =====
+The above script lacks the possibility of changing values on the modbus device (just reading is possible).
+Dies sind Ideen für ein schöneres Berry Script. Dafür muß in der Pin configuration für pin20/21 statt ''None'', ''ModBr Rx/Tx'' ausgewählt werden, um das ''ModBusSend'' Kommando auf der Console zu ermöglichen.
+<code txt console commands>
+ModbusBaudrate 2400
+ModBusSend {"deviceaddress": 1, "functioncode": 4, "startaddress": 4501, "type": "uint16", "count": 1}
+</code>
+Zunächst antwortet dieses Kommando nicht mit ''ModBusReceive'' .
+Andere User schreiben, dass dieser Berry Mode leider Crash gefährdet ist.

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