I am using Altera's EP2S30 series FPGA chip, and I need to use DDR SDRAM, which needs to be connected to the SSTL2 voltage standard. I don't know how to connect VREF. If VREF is connected to 1.25V, VC...
How to define the address variable of the off-chip space in 8958cpu and what data type is better? I want to define 1 array global variable and 2 array local variables with the size of [24] one-dimensi...
[size=4]:puzzle:The analog ground and digital ground are connected through an inductor. There is a voltage of more than 100 millivolts between them. How to eliminate it? [/size] [size=4]:) The board i...
[color=rgb(68,68,68)][backcolor=rgb(255,255,255)]The AD9642, a 14-bit analog-to-digital converter with a sampling rate of up to 250 MSPS, is suitable for diversity radio systems, analog digital receiv...
ADI, which was originally a leader in the DSP field, also uses the Cortex-M4 core. Has anyone used the ADSP-CM40x series mixed-signal controller? Can you tell me which DSP and DSP extension of Cortex-...
Recently, the first Digital China Summit was held in Fuzhou, attracting many domestic ICT industry giants to participate in the exhibition. The long queues outside the venue, the noisy and exciting...[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]
We have come a long way from the 2G era, and now 5G is about to be commercialized. Suddenly, we realize that time has passed quickly, but technology has never stopped. The activation of 5G heralds ...[Details]
Recently, there was news that the US government asked Google to shut down the Android operating system for ZTE phones. After that, some people even imagined what the consequences would be if Intern...[Details]
Because the STM32 HAL library only has millisecond-level delay for HAl_Delay(), in order to achieve accurate microsecond-level delay, Systick has to be modified. However, since it is used internally ...[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]
From last year to now, competition in the photovoltaic inverter industry has become increasingly fierce. In addition to the introduction of new products, various marketing and promotion methods hav...[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, the application of high-brightness LED has developed rapidly, especially in signboards and traffic lights. For automotive applications, LED is also very attractive. Long life, shock ...[Details]
STM32 Watchdog Summary I have been adjusting the development board of Atom Brother for more than a year, and it is basically usable, but I still don't understand the working mechanism of some basi...[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]
Summary of STM32 peripheral DMA usage: 1. Select DAM mode according to your needs: (1) Circular mode—DMA_Mode = DMA_Mode_Circular (2) Normal mode—DMA_Mode = DMA_Mode_Normal 2. For Chanel3 of DMA1, t...[Details]
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