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boards: arm: frdm_k64f: add documentation for CAN pins

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Add documentation to the CAN RX/TX pins of the NXP FRDM-K64F development
board.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2021-12-06 11:23:49 +01:00 • committed by David Leach
commit dc9fcc4b66
1 changed files with 11 additions and 0 deletions
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11
boards/arm/frdm_k64f/doc/index.rst
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@ -135,6 +135,10 @@ The K64F SoC has five pairs of pinmux/gpio controllers.
+-------+-----------------+---------------------------+
| PTB17 | UART0_TX | UART Console |
+-------+-----------------+---------------------------+
| PTB18 | CAN0_TX | CAN TX |
+-------+-----------------+---------------------------+
| PTB19 | CAN0_RX | CAN RX |
+-------+-----------------+---------------------------+
| PTC8 | PWM | PWM_3 channel 4 |
+-------+-----------------+---------------------------+
| PTC9 | PWM | PWM_3 channel 5 |
@ -207,6 +211,13 @@ The K64F SoC has a USB OTG (USBOTG) controller that supports both
device and host functions through its micro USB connector (K64F USB).
Only USB device function is supported in Zephyr at the moment.
CAN
===
The FRDM-K64F board does not come with an onboard CAN transceiver. In order to
use the CAN bus, an external CAN bus tranceiver must be connected to ``PTB18``
(``CAN0_TX``) and ``PTB19`` (``CAN0_RX``).
Programming and Debugging
*************************