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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 | | PTB17 | UART0_TX | UART Console |
+-------+-----------------+---------------------------+ +-------+-----------------+---------------------------+
| PTB18 | CAN0_TX | CAN TX |
+-------+-----------------+---------------------------+
| PTB19 | CAN0_RX | CAN RX |
+-------+-----------------+---------------------------+
| PTC8 | PWM | PWM_3 channel 4 | | PTC8 | PWM | PWM_3 channel 4 |
+-------+-----------------+---------------------------+ +-------+-----------------+---------------------------+
| PTC9 | PWM | PWM_3 channel 5 | | 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). device and host functions through its micro USB connector (K64F USB).
Only USB device function is supported in Zephyr at the moment. 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 Programming and Debugging
************************* *************************