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feat(global): add macros for GPIO->channel lookup

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including: macros for dac, adc, touch, rtc_gpio, uart and clk_out.

TW#13970
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michael
2017-08-29 15:52:04 +08:00
parent 4809c70899
commit 08b9fbc242
17 changed files with 409 additions and 39 deletions
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docs/api-reference/peripherals/uart.rst
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@@ -18,4 +18,17 @@ API Reference
.. include:: /_build/inc/uart.inc
GPIO Lookup Macros
^^^^^^^^^^^^^^^^^^
Some useful macros can be used to specified the **direct** GPIO (UART module connected to pads through direct IO mux without the GPIO mux) number of a UART channel, or vice versa.
The pin name can be omitted if specify the channel of a GPIO num.
e.g.
1. ``UART_NUM_2_TXD_DIRECT_GPIO_NUM`` is the GPIO number of UART channel 2 TXD pin (17);
2. ``UART_GPIO19_DIRECT_CHANNEL`` is the UART channel number of GPIO 19 (channel 0);
3. ``UART_CTS_GPIO19_DIRECT_CHANNEL`` is the UART channel number of GPIO 19, and GPIO 19 must be a CTS pin (channel 0).
.. include:: /_build/inc/uart_channel.inc