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Using Systick timer to achieve delay 1. SysTick timer characteristics The SysTick timer is a 24-bit down counter, that is, when vlue is decremented to 0, an interrupt is triggered and the load va...[Details]
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background After the hardware engineer completed the PCB and schematic design, the routine was modified according to the tutorial of Zhengdian Atom to verify the correctness of the hardware. STM32F...[Details]
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Household photovoltaic power stations mainly utilize idle resources on existing household buildings, such as roofs, wall facades, balconies, courtyards, etc., to install and use distributed photovo...[Details]
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Independent watchdog (IWDG) and low power mode are often used in STM32 development. The watchdog is to detect and solve faults caused by software errors, and the low power mode is to enter sleep mode...[Details]
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A crystal oscillator can be electrically equivalent to a two-terminal network consisting of a capacitor and a resistor in parallel and a capacitor in series. In electrical engineering, this network h...[Details]
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If you do not use an external crystal on the STM32, the connection method of OSC_IN and OSC_OUT If you use the internal RC oscillator instead of an external crystal, please follow the following metho...[Details]
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Assume that the MCS-51 microcontroller uses a 12MHz crystal oscillator, and wants to use a timer to generate a pulse with a duty cycle of about 30% and a period of 60ms at port P1.0. ;==============...[Details]
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Please help me analyze the clock cycles occupied by the following delay program. Seek to explain: DELAY: MOV R6, #13 DELAY1: MOV R5, #250 DELAY2: NOP DJNZ R5, DELAY2 DJNZ R6, DEL...[Details]
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/**********（一）Timer A comparison mode*************/ int main( void ) { WDTCTL=WDTPW+WDTHOLD; //Turn off watchdog BCSCTL1 =CALBC1_1M Hz ; //Set DCO to 1MHZ DCOCTL =CALBC1_1MHZ; P1DIR |= BIT0; ...[Details]
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The chip is EM78P153 ; P64, P65 are connected to the crystal oscillator, the oscillation mode is 4MHz crystal oscillator ; the watchdog is off, the instruction cycle is 2 CLOCK, and P63 is the rese...[Details]
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The industry generally believes that hybrid beamforming (Figure 1) will be the preferred architecture for 5G systems operating at microwave and millimeter wave frequencies. This architecture combin...[Details]
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在一个沒有規则性的内容转换中，查表程序是相当有用的，用户可以使用查表程序很快速的得到相关内容的转换。 例：设计一个程序，將如下图所示中的PORT5读到的一个数值，将输入内容做转换，然后输出到PORT6的7段显示器上。 上图中开关关闭，I/O引脚可以得到一个低电位，若是开关开启则I/O引脚可以得到一个高电位。 图 5.2 数码管 八段说明 7段显示器的接线图如上，我們要編一...[Details]
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; ******************************************** ; Function: 7-segment digital tube display program * ; MICroProcessor : HT48R50A-1/28SKDIP-A * ; Author: www.picavr.com * ; Cr...[Details]
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China Energy Storage Network News:
Today, Baidu and China Southern Power Grid Guangdong Company signed a strategic cooperation framework agreement in Guangzhou and will jointly implement the ...[Details]
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Recently, the Ministry of Science and Technology issued a notice approving the establishment of six national research centers, including Beijing Molecular Science, Wuhan Optoelectronics, Beijing Co...[Details]
Test/Measurement
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