i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, ( ESP_SLAVE_ADDR << 1 ) | WRITE_BIT, ACK_CHECK_EN); i2c_master_write(cmd, data_wr, size, ACK_CHECK_EN); i2c_master_stop(cmd); esp_err_t ret = i2c_master_cmd_begin(i2c_num...
Can someone give me a piece of code that will send these commands via I2C: device address: 0x2F register to write: 0x00 data to write: 0x15 My settings: Code: Select all static gpio_num_t i2c_gpio_sda = 4 ; static gpio_num_t i2c_gpio_scl = 2 ; static uint32_t i2c_frequen...
< I2C master will check ack from slave*/ #define ACK_CHECK_DIS 0x0 /*!< I2C master will not check ack from slave */ #define ACK_VAL 0x0 /*!< I2C ack value */ #define NACK_VAL 0x1 /*!< I2C nack value */ uint8_t Temp[2]; /** * @brief test code to read esp-i2c-sla...
// Define I2C Pins #define I2C_SDA 14 #define I2C_SCL 15 // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1); void setup() { // Initialize with the I2C addr 0x3C (for the 128x32) Wire.begin(I2...
【教程】ESP32-CAM使用I2C驱动0.91寸OLED 先安装库 1. 打开 ArduinoIDE,然后转到Sketch>Include Library> Manage Libraries。 2. 在搜索框中输入“SSD1306”,然后从 Adafruit 安装 SSD1306 库。 3. 选择“install all”。如果没有跳出弹窗,则从 Adafruit 安装 SSD1306 库后,在搜索框中键入“GFX”并安装该库。
charcount =0;voidsetup(){// put your setup code here, to run once:// Serial.begin(9600);// //testdrawcircle();// display.begin(i2c_Address,true);// testdrawbitmap(logo16_glcd_bmp, LOGO16_GLCD_HEIGHT, LOGO16_GLCD_WIDTH);Serial.begin(115200);/* prepare ...
Re: i2c scan problem flashing the i2c_tools example PostbyMicroController»Thu Apr 27, 2023 6:26 pm https://github.com/espressif/esp-idf/bl ... ols.c#L138 Code:Select all if(ret == ESP_ERR_TIMEOUT) {printf("UU "); }else... ...
温湿度的采集,还是根据 ESP32-C3入门教程 基础篇(四、I2C总线 —与SHT21温湿度传感器通讯)中的内容,添加对应的 sht21.c 和 sht21.h 文件,然后在周期任务处调用测试: 测试效果: 1.5 按键(GPIO) 按键操作目的在于,当产品需要配网的时候,手动删除以前的配网信息,按键的操作在 ...
1.4 温湿度采集(I2C) 温湿度的采集,还是根据 ESP32-C3入门教程 基础篇(四、I2C总线 —与SHT21温湿度传感器通讯)中的内容,添加对应的 sht21.c 和 sht21.h 文件,然后在周期任务处调用测试: 在这里插入图片描述 测试效果: 在这里插入图片描述 1.5 按键(GPIO) ...
The code example down below does the following: We start with defining & Attaching The PWM GPIO pin. The pin I’ll be using a PWM pin is GPIO5 in this example. Then, we’ll be configuring the PWM Channel’s frequency & resolution. And in the main loop() function, I’ll be gradual...