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Diffstat (limited to 'source')
| -rw-r--r-- | source/usart.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/source/usart.rst b/source/usart.rst index 8766e3f..e65821d 100644 --- a/source/usart.rst +++ b/source/usart.rst @@ -3,19 +3,25 @@ USART ===== +A USART is more commonly known a *serial port*. It's used to transmit +information between Maple and another device (like your computer, +another Maple, etc.). + .. contents:: Contents :local: Hardware/Circuit Design ----------------------- +.. TODO [0.0.12] Add some more information here (like how you should +.. connect TX_a to RX_b and RX_a to TX_b). + .. TODO [0.0.12/Maple Native] UART4 and UART5, Native links Each LeafLabs board has at least 3 separate USART devices. In the most simple use case, the RX and TX pins are used to send data at a -predetermined baud rate with the line voltage level relative to -ground. Their usage is documented in the :ref:`Serial Ports -<lang-serial>` language reference page. +predetermined speed (or *baud rate*). Their usage is documented in +the :ref:`Serial Ports <lang-serial>` language reference page. Which pins correspond to the USART TX and RX pins are given on your board's silkscreen, and also in the board-specific USART pin maps |