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add UART RX TX to mpconfigboard
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ports/espressif/boards/lolin_c3_mini/mpconfigboard.h

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Original file line numberDiff line numberDiff line change
@@ -39,3 +39,6 @@
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#define DEFAULT_SPI_BUS_MOSI (&pin_GPIO4)
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#define DEFAULT_SPI_BUS_MISO (&pin_GPIO3)
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#define DEFAULT_SPI_BUS_SCK (&pin_GPIO2)
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#define DEFAULT_UART_BUS_RX (&pin_GPIO20)
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#define DEFAULT_UART_BUS_TX (&pin_GPIO21)

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