(2714) i2c.master: I2C transaction unexpected nack detected E (2714) i2c.master: s_i2c_synchronous_transaction(917): I2C transaction failed E (2715) i2c.master: i2c_master_transmit_receive(1200): I2C transaction failed E (2722) lcd_panel.io.i2c: panel_io_i2c_rx_buffer(145): i2c ...
< 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...
⾸先，调⽤库函数，初始化I2C总线（类似于stm32那样）这个初始化结构体看起来也挺简单 初始化模式：Master IO⼝引脚：ESP32具有两个I2C，分别映射到的引脚为18 19 25 26。我们这⾥选择I2C0，也就是I2C_NUM_0，对应18 19号引脚。总线上拉使能：enable 总线速度 :100K 调⽤初始化i2c_param_config...
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...
首先,调用库函数,初始化I2C总线(类似于stm32那样) 这个初始化结构体看起来也挺简单 初始化模式 :Master IO口引脚 :ESP32具有两个I2C,分别映射到的引脚为18 19 25 26。我们这里选择I2C0,也就是I2C_NUM_0,对应18 19号引脚。 总线上拉使能 :enable ...
This example implements both sync and async i2c depending on the settings below. It was written to facilitate testing of the Espressif's ESP32 i2c_master code. Comment or un-comment the #define I2C_USE_CALLBACK at the top of i2c-test.c as you wish: Uncommented: Use async i2c with ca...
IP());// Display IP address on OLEDdisplay.clearDisplay();display.setCursor(0,0);display.println("WiFi connected");display.print("IP: ");display.println(WiFi.localIP());display.display();}voidloop(){// Your loop code here. In this example, the loop does not contain additional code....
example.py from machine import Pin,I2C,SPI,PWM from sht30 import SHT30,SHT30Error from st7567 import ST7567 from ufont import BMFont import time # 创建I2C对象 i2c = I2C(0,scl = Pin(5),sda = Pin(4),freq = 1_000_000) print(i2c.scan()) # 打印出i2c的地址 # 创建温湿度传感器对象...
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 ...
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 ...