freq() # get current frequency (default 5kHz) pwm0.freq(1000) # set PWM frequency from 1Hz to 40MHz duty = pwm0.duty() # get current duty cycle, range 0-1023 (default 512, 50%) pwm0.duty(256) # set duty cycle from 0 to 1023 as a ratio duty/1023, (now 25%) duty_u16 =...
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 ...
AI代码解释 voidapp_main(void){ledc_timer_config_t ledc_timer={.duty_resolution=LEDC_TIMER_10_BIT,// resolution of PWM duty.freq_hz=1,// frequency of PWM signal.speed_mode=LEDC_HIGH_SPEED_MODE,// timer mode.timer_num=LEDC_TIMER_0,// timer index.clk_cfg=LEDC_AUTO_CLK,// Auto sele...
#define I2C_MASTER_NUM I2C_NUM_0 // I2C port number #define I2C_MASTER_TX_BUF_DISABLE 0 // I2C master do not need buffer #define I2C_MASTER_RX_BUF_DISABLE 0 // I2C master do not need buffer #define I2C_MASTER_FREQ_HZ 100000 // I2C frequency #define TM1650_ADDR 0x3C // TM1650...
.master.clk_speed = I2C_MASTER_FREQ_HZ, // select frequency specific to your project // .clk_flags = 0, /*!< Optional, you can use I2C_SCLK_SRC_FLAG_* flags to choose i2c source clock here. */ }; 1. 2. 3. 4. 5.
在SCL保持高电平期间,SDA被释放,返回高电平,称为I2C总线的停止信号,标志着一次数据传输的终止。停止信号由主机主动建立的,建立该信号之后,I2C总线将返回空闲状态。 SCL保持高电平。SDA由低电平变为高电平。 4. 应答信号 在I2C 通信中,针对每个数据传输操作,接收端设备需要发送一个应答信号来确认数据是否正确接收。
1、初始化 （1）配置i2c：指定i2c的引脚、模式、速率等； （2）安装i2c驱动：设置发送、接收缓冲，指...
CORE ESP32核心板是基于乐鑫ESP32-C3进行设计的一款核心板,尺寸仅有21mm*51mm,板边采用邮票孔设计,方便开发者在不同场景下的使用。核心板支持UART、GPIO、SPI、I2C、ADC、PWM等接口,可根据实际需要选择。 屏幕使用的LuatOS屏幕扩展板购买连接 驱动芯片:ST7735S屏幕尺寸:80 X 160 ...
(){// 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 for possible serial debug */setCpuFrequencyMhz(...
< I2C port number for master dev */ #define I2C_MASTER_FREQ_HZ 400000 /*!< I2C master clock frequency */ static i2c_bus_handle_t i2c_bus = NULL; static mpu6050_handle_t mpu6050 = NULL; extern "C" void app_main(void) { i2c_config_t conf = { .mode = I2C_MODE_MASTER, .sda_...