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Added clarification for hardware_serial & baud_rate setting

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Per #72 , added clarifications that setting baud_rate may be required on some ESP32 boards (mine is Huzzah32 Feather) or else you will go into boot loop.
Also, added detail to baud_rate setting that some heat pumps require 2400. Mine is MSZ-GL18NA, which only worked with 2400 (not 4800 or 9600). Note, the default swicago library will first try 2400, and then try 9600, if no explicit rate is provided.
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MrChuckDanger 2023-01-23 13:27:21 -05:00 committed by GitHub
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README.md
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@ -107,6 +107,7 @@ climate:
# Optional
hardware_uart: UART0
baud_rate: 4800
# Optional
update_interval: 500ms
@ -121,7 +122,8 @@ logger:
```
On ESP32 you can change `hardware_uart` to `UART1` or `UART2` and keep logging
enabled on the main serial port.
enabled on the main serial port. This may require specifying baud_rate on some
ESP32 boards.
*Note:* this component DOES NOT use the ESPHome `uart` component, as it
requires direct access to a hardware UART via the Arduino `HardwareSerial`
@ -223,8 +225,10 @@ climate:
# ESP32 only - change UART0 to UART1 or UART2 and remove the
# logging:baud_rate above to allow the built-in UART0 to function for
# logging.
# logging.
# Some ESP32 boards will require the baud_rate setting if hardware_uart is specified.
hardware_uart: UART0
baud_rate: 4800
```
# Advanced configuration
@ -256,7 +260,8 @@ climate:
`UART0`, `UART1`, and `UART2` are all valid choices. Default: `UART0`
* *baud\_rate* (_Optional_): Serial BAUD rate used to communicate with the
HeatPump. Most systems use the default value of `4800` baud, but some use
`9600`. Default: `4800`
`2400` or `9600`. Some ESP32 boards will require the baud_rate setting if
hardware_uart is specified. Default: `4800`.
* *update\_interval* (_Optional_, range: 0ms to 9000ms): How often this
component polls the heatpump hardware, in milliseconds. Maximum usable value
is 9 seconds due to underlying issues with the HeatPump library. Default: 500ms