What do the following macros mean and what are they used for? #define HCI_IGNORE 0x01 #define HCI_RESET 0x02 #define HCI_DIGIANSWER 0x04 #define HCI_SNIFFER 0x08 #define HCI_BROKEN_ISOC 0x10 #define H...
The original program only has the original version.. There is no problem of selecting which division through the IO portNow I modified it toPurpose: Now if the P3.6 port in my program is at a high lev...
[size=18px][color=#333333][font=微软雅黑]I have posted 2 posts before, which realized the initialization of SD card and the acquisition of SD card capacity and type. Now I will start to read the contents ...
Frequency synthesis technology has been known to people since the 1930s, and has made great progress over the past 1970s. Frequency synthesis is a technology that uses one or more frequencies as the b...
I want to make a pointer-type perpetual calendar, and I need to use LCD12864. Now the problem is that the LGM12864 I found in Protues has 18 pins, and the information I saw says it has 20 pins. So if ...
I am a novice. I have just learned DSP for a few days because I want to participate in a DSP competition. Is the difference between 2812 and 2808 only in controlling the motor? Are there big differenc...
In our common sense, the word technology often has two definitions. The first is the technology sealed in the laboratory. They are like flowers on the mountain top. Only a few people on the mountai...[Details]
In the actual project development process, it is common to encounter modifications to the hardware circuit, and then the modified part requires the modification of the driver. Thinking about the comi...[Details]
Regarding the PHY construction of LWIP, the PHY chip used is LAN8720A, RMII mode. Regarding the hardware connection part, the Atomic board F407 is used, and the hardware connection is as follows: ...[Details]
1. Initial understanding of FSMC: FSMC consists of 4 modules: (1) AHB interface (including FSMC configuration register) (2) NOR flash memory and PSRAM controller (when driving LCD, LCD is like a PSRA...[Details]
ZTE was punished, and Hou Weigui, who had already retired, had to come out of retirement again and run around to mediate. Let's follow the embedded editor to learn about the relevant content.
...[Details]
At the just concluded InfoComm 2018 exhibition, the two major brands, Zhongke Jiguang and China Hualu, both displayed three-color light source
laser TVs
. The outstanding color performance ...[Details]
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]
In recent years, in order to meet the needs of social development, more and more companies have entered the fields of smart phones, artificial intelligence,
VR
, AR, etc. After seeing the d...[Details]
STM32 has 2 watchdogs: independent watchdog and window watchdog. Independent watchdog IWDG: A system fault detector that is independent of the system and is not affected by the system because it has ...[Details]
The calculation formula of the watchdog feeding time (watchdog overflow time) is: Tout=((4*2^prer)*rlr)/40 Tout is the watchdog overflow time (in ms), prer is the watchdog clock prescaler value (...[Details]
OSC_IN and OSC_OUT are external crystal pins by default. If you do not use an external crystal oscillator on the STM32, how to connect OSC_IN and OSC_OUT If you use the internal RC oscillator instead...[Details]
The first one is a DMA mode of multiple channel acquisition void ADC_DMA_Config(void) { ADC_InitTypeDef ADC_InitStructure; RCC_HSICmd(ENABLE); while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); ...[Details]
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]
The T3 timer (8-bit) of CC2530 requires understanding of T3CTL, T3CCTL0, T3CC0, T3CCTL1, and T3CC registers. Timer 3/4 is an 8-bit timer with timer/counter/PWM functions. Timer 2, also known as MAC t...[Details]
By manually inputting single pulses to the /INT0 of the 8051 microcontroller one by one, an interrupt is requested to the microcontroller. Each time the microcontroller interrupts, it outputs 55H, AA...[Details]
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