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docs: initial update of programming guide for C3

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Updates "front page" content, get-started, and api-guides with C3 content

Enable building and publishing of C3 docs in CI
This commit is contained in:
Marius Vikhammer
2021-01-27 10:12:58 +08:00
parent bd1578f2e3
commit 548fd02d10
58 changed files with 442 additions and 281 deletions
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docs/en/api-guides/lwip.rst
+10 -11
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@@ -122,7 +122,7 @@ Get the error reason code
Example::
int err;
if (select(sockfd + 1, NULL, NULL, &exfds, &tval) <= 0) {
err = errno;
return err;
@@ -156,17 +156,17 @@ Below is a list of common error codes. For more detailed list of standard POSIX/
| ETIMEDOUT | Connection timed out |
+-----------------+-------------------------------------+
| EHOSTDOWN | Host is down |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| EHOSTUNREACH | Host is unreachable |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| EINPROGRESS | Connection already in progress |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| EALREADY | Socket already connected |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| EDESTADDRREQ | Destination address required |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| EPROTONOSUPPORT | Unknown protocol |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
Socket Options
^^^^^^^^^^^^^^
@@ -324,14 +324,13 @@ IP layer features
Limitations
^^^^^^^^^^^
Calling ``send()`` or ``sendto()`` repeatedly on a UDP socket may eventually fail with ``errno`` equal to ``ENOMEM``. This is a limitation of buffer sizes in the lower layer network interface drivers. If all driver transmit buffers are full then UDP transmission will fail. Applications sending a high volume of UDP datagrams who don't wish for any to be dropped by the sender should check for this error code and re-send the datagram after a short delay.
- Calling ``send()`` or ``sendto()`` repeatedly on a UDP socket may eventually fail with ``errno`` equal to ``ENOMEM``. This is a limitation of buffer sizes in the lower layer network interface drivers. If all driver transmit buffers are full then UDP transmission will fail. Applications sending a high volume of UDP datagrams who don't wish for any to be dropped by the sender should check for this error code and re-send the datagram after a short delay.
.. only::esp32
.. only:: esp32
Increasing the number of TX buffers in the :ref:`Wi-Fi <CONFIG_ESP32_WIFI_TX_BUFFER>` or :ref:`Ethernet <CONFIG_ETH_DMA_TX_BUFFER_NUM>` project configuration (as applicable) may also help.
.. only::esp32s2
.. only:: not esp32
Increasing the number of TX buffers in the :ref:`Wi-Fi <CONFIG_ESP32_WIFI_TX_BUFFER>` project configuration may also help.