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@@ -24,21 +24,24 @@ $ sudo apt-get install --no-install-recommends python3-spidev
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Connect the following pins directly:
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-|C1101|Raspberry Pi |
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-|-----|--------------------|
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-|VDD | 3.3V (Pin 1 or 17) |
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-|SI | MOSI (Pin 19) |
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-|SO | MISO (Pin 21) |
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-|CSn | CE0 (Pin 24) |
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-|SCLK | SCLK (Pin 23) |
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-|GND | Ground |
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-
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-If these pins are already in use,
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+|C1101 |Raspberry Pi |
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+|------|--------------------|
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+|VDD | 3.3V (Pin 1 or 17) |
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+|SI | MOSI (Pin 19) |
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+|SO | MISO (Pin 21) |
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+|CSn | CE0 (Pin 24) |
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+|SCLK | SCLK (Pin 23) |
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+|GDO2\*| Any GPIO pin, commonly GPIO25 (Pin 22) \[[1](https://github.com/SpaceTeddy/CC1101/blob/0d0f011d3b808e36ad57fab596ed5e1db9516856/README.md#hardware-connection),[2](https://allgeek.de/2017/07/31/cc1101-spi-raspberry-adapter-fuer-homegear-homematicmax/),[3](https://securipi.co.uk/cc1101.pdf)\] |
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+|GND | Ground |
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+
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+If some of these pins are already in use,
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select a different SPI bus or chip select:
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https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md
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([permalink](https://github.com/raspberrypi/documentation/blob/d41d69f8efa3667b1a8b01a669238b8bd113edc1/hardware/raspberrypi/spi/README.md#hardware))
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-No resistors required. GDO0 & GDO2 are currently unused.
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+No resistors required.
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+Pins marked with \* are optional.
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+GDO2 stays "high until power and crystal have stabilized" (see CHIP_RDYn in docs).
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Raspberry Pi GPIO docs: https://www.raspberrypi.org/documentation/usage/gpio/
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