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minor readme update

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2021-04-22 10:55:49 -07:00
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Grbl_Esp32/src/Spindles/TecoL510_README.md
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@@ -15,5 +15,14 @@ Check that these are set to the default factory values:
# Implementation details
this was tested with pin 16 RX and 26 TX mapped in the machine config file. Pin 4 was used for RTS but it is not used on the rs485 module I tested with.
```
#define VFD_RS485_TXD_PIN GPIO_NUM_26
#define VFD_RS485_RTS_PIN GPIO_NUM_4
#define VFD_RS485_RXD_PIN GPIO_NUM_16
```
not sure how to detect and parse error messages
max frequency is currenly hardcode