添加智能灯固件代码

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/CMakeLists.txt

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+# The following lines of boilerplate have to be in your project's CMakeLists
+# in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(uart_echo)

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/Makefile

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+#
+# This is a project Makefile. It is assumed the directory this Makefile resides in is a
+# project subdirectory.
+#
+
+PROJECT_NAME := uart_echo
+
+include $(IDF_PATH)/make/project.mk
+

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/README.md

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+# UART Echo Example
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+This example demonstrates how to utilize UART interfaces of ESP32 by echoing back to the sender any data received on
+UART1.
+
+## How to use example
+
+### Hardware Required
+
+The example can be run on any ESP32 development board connected to a PC with a single USB cable for flashing and
+monitoring. The external interface should have 3.3V outputs. You may use e.g. 3.3V compatible USB-to-Serial dongle.
+
+### Setup the Hardware
+
+Connect the external serial interface to the ESP32 board as follows.
+
+  | ESP32 Interface | #define | ESP32 Pin | External UART Pin |
+  | --- | --- | --- | --- |
+  | Transmit Data (TxD) | ECHO_TEST_TXD | GPIO4 | RxD |
+  | Receive Data (RxD) | ECHO_TEST_RXD | GPIO5 | TxD |
+  | Ground | n/a | GND | GND |
+
+Optionally, you can set-up and use a serial interface that has RTS and CTS signals in order to verify that the
+hardware control flow works. Connect the extra signals according to the following table, configure both extra pins in
+the example code by replacing existing `UART_PIN_NO_CHANGE` macros with the appropriate pin numbers and configure
+UART1 driver to use the hardware flow control by setting `.flow_ctrl = UART_HW_FLOWCTRL_CTS_RTS` and adding
+`.rx_flow_ctrl_thresh = 122`.
+
+  | ESP32 Interface | #define | ESP32 Pin | External UART Pin |
+  | --- | --- | --- | --- |
+  | Request to Send (RTS) | ECHO_TEST_RTS | GPIO18 | CTS |
+  | Clear to Send (CTS) | ECHO_TEST_CTS | GPIO19 | RTS |
+
+### Configure the project
+
+```
+idf.py menuconfig
+```
+
+### Build and Flash
+
+Build the project and flash it to the board, then run monitor tool to view serial output:
+
+```
+idf.py -p PORT flash monitor
+```
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
+
+## Example Output
+
+Type some characters in the terminal connected to the external serial interface. As result you should see echo in the
+terminal which is used for flashing and monitoring. You can verify if the echo indeed comes from ESP32 by
+disconnecting either `TxD` or `RxD` pin: no characters will appear when typing.
+
+## Troubleshooting
+
+You are not supposed to see the echo in the terminal which is used for flashing and monitoring, but in the other one
+which is connected to UART1.

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/main/CMakeLists.txt

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+idf_component_register(SRCS "uart_echo_example_main.c"
+                    INCLUDE_DIRS ".")

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/main/component.mk

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+#
+# Main Makefile. This is basically the same as a component makefile.
+#

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/uart/uart_echo/main/uart_echo_example_main.c

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+/* UART Echo Example
+
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+#include <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/uart.h"
+#include "driver/gpio.h"
+
+/**
+ * This is an example which echos any data it receives on UART1 back to the sender,
+ * with hardware flow control turned off. It does not use UART driver event queue.
+ *
+ * - Port: UART1
+ * - Receive (Rx) buffer: on
+ * - Transmit (Tx) buffer: off
+ * - Flow control: off
+ * - Event queue: off
+ * - Pin assignment: see defines below
+ */
+
+#define ECHO_TEST_TXD  (GPIO_NUM_4)
+#define ECHO_TEST_RXD  (GPIO_NUM_5)
+#define ECHO_TEST_RTS  (UART_PIN_NO_CHANGE)
+#define ECHO_TEST_CTS  (UART_PIN_NO_CHANGE)
+
+#define BUF_SIZE (1024)
+
+static void echo_task(void *arg)
+{
+    /* Configure parameters of an UART driver,
+     * communication pins and install the driver */
+    uart_config_t uart_config = {
+        .baud_rate = 115200,
+        .data_bits = UART_DATA_8_BITS,
+        .parity    = UART_PARITY_DISABLE,
+        .stop_bits = UART_STOP_BITS_1,
+        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+        .source_clk = UART_SCLK_APB,
+    };
+    uart_driver_install(UART_NUM_1, BUF_SIZE * 2, 0, 0, NULL, 0);
+    uart_param_config(UART_NUM_1, &uart_config);
+    uart_set_pin(UART_NUM_1, ECHO_TEST_TXD, ECHO_TEST_RXD, ECHO_TEST_RTS, ECHO_TEST_CTS);
+
+    // Configure a temporary buffer for the incoming data
+    uint8_t *data = (uint8_t *) malloc(BUF_SIZE);
+
+    while (1) {
+        // Read data from the UART
+        int len = uart_read_bytes(UART_NUM_1, data, BUF_SIZE, 20 / portTICK_RATE_MS);
+        // Write data back to the UART
+        uart_write_bytes(UART_NUM_1, (const char *) data, len);
+    }
+}
+
+void app_main(void)
+{
+    xTaskCreate(echo_task, "uart_echo_task", 1024, NULL, 10, NULL);
+}