alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

docs: fix uart number naming error

Browse Source
This commit is contained in:
Marius Vikhammer 2021-01-20 10:34:35 +08:00
parent 967c07b6ae
commit d8ba0f9b0e
1 changed files with 13 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
docs/en/api-reference/peripherals/uart.rst
View File

@ -1,7 +1,7 @@
UART
====
{IDF_TARGET_UART_NUM:default = "UART1", esp32 = "UART2", esp32s2 = "UART1"}
{IDF_TARGET_UART_NUM:default = "UART_NUM_1", esp32 = "UART_NUM_2", esp32s2 = "UART_NUM_1"}
Overview
--------
@ -99,21 +99,19 @@ After setting communication parameters, configure the physical GPIO pins to whic
The same macro should be specified for pins that will not be used.
.. code-block:: c
.. only:: esp32
::
.. code-block:: c
// Set UART pins(TX: IO16 (UART2 default), RX: IO17 (UART2 default), RTS: IO18, CTS: IO19)
ESP_ERROR_CHECK(uart_set_pin(UART_NUM_2, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, 18, 19));
// Set UART pins(TX: IO16 (UART2 default), RX: IO17 (UART2 default), RTS: IO18, CTS: IO19)
ESP_ERROR_CHECK(uart_set_pin(UART_NUM_2, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, 18, 19));
.. only:: esp32s2
::
.. code-block:: c
// Set UART pins(TX: IO17 (UART1 default), RX: IO18 (UART1 default), RTS: IO19, CTS: IO20)
ESP_ERROR_CHECK(uart_set_pin(UART_NUM_1, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, 19, 20));
// Set UART pins(TX: IO17 (UART1 default), RX: IO18 (UART1 default), RTS: IO19, CTS: IO20)
ESP_ERROR_CHECK(uart_set_pin(UART_NUM_1, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, 19, 20));
.. _uart-api-driver-installation:
@ -189,7 +187,7 @@ There is a 'companion' function :cpp:func:`uart_wait_tx_done` that monitors the
.. code-block:: c
// Wait for packet to be sent
const int uart_num = UART_NUM_2;
const int uart_num = {IDF_TARGET_UART_NUM};
ESP_ERROR_CHECK(uart_wait_tx_done(uart_num, 100)); // wait timeout is 100 RTOS ticks (TickType_t)
@ -353,7 +351,7 @@ Circuit C: Auto Switching Transmitter/Receiver
VCC1 <-------------------+-----------+ +-------------------+----> VCC2
10K ____ | | | |
+---|____|--+ +---x-----------x---+ 10K ____ |
| | | +---|____|--+ GND2
| | | +---|____|--+
RX <----------+-------------------| RXD | |
10K ____ | A|---+---------------<> A (+)
+-------|____|------| PV ADM2483 | | ____ 120
@ -363,7 +361,7 @@ Circuit C: Auto Switching Transmitter/Receiver
---+ +-->| /RE | | ____
10K | | | | +---|____|---+
____ | /-C +---| TXD | 10K |
TX >---|____|--B___|/ NPN | | | |
TX >---|____|--+_B_|/ NPN | | | |
|\ | +---x-----------x---+ |
| \-E | | | |
| | | | |