AI代码解释 voiddelay_us(uint32_t us){// Set timer period for desired delay in microseconds__HAL_TIM_SET_AUTORELOAD(&htim2,us-1);//定时器响应时间为period*定时器频率HAL_TIM_Base_Start(&htim2);//start the timer//通过轮询的方式等待定
HAL_Delay_us()函数的实现代码如下：复制 void HAL_Delay_us(uint32_t microseconds){ uint32_t ...
void HAL_Delay_us(uint32_t microseconds){ uint32_t tickstart = 0;tickstart = HAL_GetTick();...
在HAL库中用定时器实现自定义延时函数delay_us() STM32程序从标准库移植到HAL库的时候,会发现HAL库中只有一个毫秒级延时函数HAL_Delay(),而没有微秒级延时delay_us(),本文就在HAL库中用定时器实现这个delay_us()。 2022-09-21 10:33:04 请问怎么在ucosII中实现微秒级的延时? 1、ucosii中怎么实现微秒级...
* @param microseconds:延时微秒数 * */ __STATIC_INLINE void DWT_Delay_us(volatile uint32_t microseconds) { /*获取当前CYCNT计数*/ uint32_t clk_cycle_start = DWT->CYCCNT; /*计算1us对应的CYCCNT计数增量*/ microseconds = microseconds * (HAL_RCC_GetHCLKFreq() / 1000000) - 51; ...
handle->uart){/* 发送起始位 */hal_pin_pulldown(handle->sda);hal_delay_microseconds(TM1652_DELAY_MIRCOSECOND);/* 发送数据时进入临界区,避免发送被调度器打断,导致显示出错 */hal_suspend_scheduler();/* 发送数据位 */for(unsignedcharmask=0x01;mask!=0;mask<<=1){if(byte&mask){hal_pin_pull...
Functions are named as DWT_* to be HAL-alike. Feel free to do whatever you like with this lib, change names, indents, coding style, use it in LHC firmware. Example /* main.c */ #include "dwt_delay.h" void main (void) { // Init section of your code DWT_Init(); while(1) {...
Build the project and start debugging. Press the play button and connect to your Nucleo board with a serial terminal program, such asPuTTY. You should see that it takes about 51000 microseconds to execute HAL_Delay(50) (interestingly, it seems that HAL_Delay() adds a milli...
00349 00350 00351 if (HAL_IS_BIT_CLR(hadc->Instance->CR, ADCCR_ADV)) 00352 { 00353 /* Enable ADC internal voltageregulatorthen 00354 wait for start-up time */ 00355 SET_(hadc>InstanceCR, ADCCR_ADV; 00356 wait_loop_index = (ADC_STAB_DELAY_US * ( ...
初始化完成后就是编写I2C读写函数了,这部分跟EERPOM的一样,主要是调用STM32HAL库函数读写数据寄存器及标志位,本实验的这部分被编写进ST_Sensors_I2C_WriteRegister及ST_Sensors_I2C_ReadRegister中了,在它们之上,再封装成了Sensors_I2C_WriteRegister及Sensors_I2C_ReadRegister,见 代码清单:MPU6050-3。 代码清单:MPU...