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In the past few days, the news that ZTE was "banned" by the US Department of Commerce has triggered widespread reflection and concern in various domestic industries about the lack of independent co...[Details]
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LAN8720 configuration: IP: 192.168.192.30 Gateway: 192.168.192.1 A high frequency of ARP packets is detected The content of the packet asks for the mac address of 192.168.192.1, and asks the resp...[Details]
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After studying the F4 FSMC method to drive the touch screen for a few days, I have gained some understanding, which are listed below. The unorganized record is only for my own reference in the future...[Details]
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This routine is also a classic routine on the development board. I modified the framework of the program to make it more suitable for future calls. The specific 4*4 keyboard scanning principle is rel...[Details]
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This paper proposes a design scheme for an embedded CNC system based on ARM and FPGA. The software and hardware design of the ARM system, the implementation method of hardware fine interpolation ...[Details]
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The day before yesterday, another mainland technology company submitted a prospectus to the Hong Kong Stock Exchange. The company is called "Jia Nan Creative (hereinafter referred to as 'Jia Nan')"...[Details]
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1. Heart rate measurement principle 1. What is a heart rate module? The heart rate module is professionally used to monitor the heart rate of the wrist, fingers, forehead, earlobe, chest and other ...[Details]
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The independent watchdog of STM32 is driven by a dedicated internal 40Khz low-speed clock, that is, it is still effective even if the main clock fails. Here we need to note that the clock of the inde...[Details]
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When STM32 uses JTMS (PA13) and JTCK (PA14) as normal I/O ports, add the following code before initialization (the order cannot be reversed): RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); G...[Details]
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Today I am using the AD function of the stm8s microcontroller. There are ten channels from AN0 to AN9 on the microcontroller. I want to use only three of them, AN5 to AN7. //ADC initialization void A...[Details]
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Here is the temperature added in the previous chapter The above figure is the temperature calculation formula: where Vsense is the ADC value collected from the temperature channel. The stm32f407 ...[Details]
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1. A/D (Analog-to-Digital) and D/A (Digital-to-Analog) Conversion 1. Pin AOUT: Analog output Vref: reference voltage AGND: Analog ground EXT: Ground OSC: Floating SCL，SDA：IIC AIN0, AIN1, AIN2: anal...[Details]
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/*----------------------------------------------- Name: IIC protocol PCF8591 AD/DA conversion Content: Use DA input, digital tube display output digital quantity, LED display analog voltage size ...[Details]
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One addend is in the on-chip RAM 40H, 41H, 42H units, the other addend is in the on-chip RAM 43H, 44H, 45H, and the sum is stored in the 50H, 51H, 52H units, with the carry bit stored in 00H. Please ...[Details]
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1. SCL is always controlled by the Master. SDA is controlled by the Slave when reading data and by the Master when writing data according to the direction of data transmission. After the 8-bit data i...[Details]
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