Enable UART pull-up

Add explicit pull-up configuration for the UART RX pin and disable the logger (baud_rate: 0) to avoid pin conflicts with an RS485 converter. Updates applied to esphome-smartmeter.yaml and both README (EN/CZ) files with notes explaining that esp-idf > 5.x defaults pins to floating so RX needs pull-up, and that the logger was turned off because the same pins are shared with the RS485 converter.
main
Tomer27cz 2026-03-07 13:44:06 +01:00
parent 1db8e48acf
commit 81bbd19c09
3 changed files with 30 additions and 3 deletions

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@ -180,10 +180,17 @@ Konfigurační možnosti jsou:
Až bude komponenta fungovat, můžeš nastavit `show_log` na `false`, aby se logy přestaly zobrazovat.
```yaml
logger:
baud_rate: 0
uart:
id: bus_1
rx_pin:
number: GPIO21
mode:
input: true
pullup: true
tx_pin: GPIO20
rx_pin: GPIO21
baud_rate: 9600
data_bits: 8
parity: NONE
@ -194,6 +201,10 @@ dlms_push:
uart_id: bus_1
```
V novějších verzích ESPHome (esp-idf > 5.x) je potřeba pro piny `uart` nastavit pull-up, jinak komunikace nebude fungovat. Proto6e výchozí stav pinů byl změněn na "floating".
Používám stejné piny pro RS485 převodník jako pro logger, takže jsem musel logger vypnout nastavením `baud_rate` na 0. Pokud chceš logger ponechat povolený, můžeš použít jiné piny pro logger.
### Number sensor (`sensor`)
Moje spotřeba elektřiny se měří v kWh, ale elektroměr odesílá hodnotu ve Wh. Proto používám lambda filtr k převodu hodnoty z Wh na kWh vydělením 1000.

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@ -175,10 +175,17 @@ The configuration options are:
Disable the log onece everything is working fine.
```yaml
logger:
baud_rate: 0
uart:
id: bus_1
rx_pin:
number: GPIO21
mode:
input: true
pullup: true
tx_pin: GPIO20
rx_pin: GPIO21
baud_rate: 9600
data_bits: 8
parity: NONE
@ -189,6 +196,10 @@ dlms_push:
uart_id: bus_1
```
In newer versions of ESPHome (esp-idf > 5.x) , the `uart` pins need to be pulled up, otherwise the communication will not work. This is because the default state of the pins was changed to floating.
I am using the same pins for the RS485 converter as for the logger, so I had to disable the logger by setting the `baud_rate` to 0. You can use different pins for the logger if you want to keep it enabled.
### Number sensor (`sensor`)
My electricity consumption is measured in kWh, but the meter sends the value in Wh. Therefore, I use a lambda filter to convert the value from Wh to kWh by dividing it by 1000.

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@ -11,6 +11,7 @@ esp32:
# Enable logging
logger:
baud_rate: 0
# Enable Home Assistant API
api:
@ -34,7 +35,11 @@ dlms_push:
uart:
id: bus_1
rx_pin: GPIO21
rx_pin:
number: GPIO21
mode:
input: true
pullup: true
tx_pin: GPIO20
baud_rate: 9600
data_bits: 8