In conventional ultra-short wave wireless communications, the problem of short communication distance of handheld devices is often encountered. Because the handheld device is restricted by many factor
When verifying the serial port function according to the following example program, the data monitored by the serial port is all 00 00. What is the reason? void main() { uint8_t str[]="mtrliya"; GPIO_
External structure of the microcontroller:1. DIP40 dual in-line socket;2. P0, P1, P2, P3 four 8-bit quasi-bidirectional I/O pins; (When used as I/O input, a high level must be output first)3. Power su
We have also made many innovations on the i.MX8M Mini development platform. One important point is that the ITOP-I.MX8M Mini core board power management adopts the PMIC power management chip PCA9450A
The sampling rate is above 1M, but the frequency range of the signal is only 37k-43k. FFT will calculate a lot of zeros. Is there any way to calculate the spectrum in a specified range? The current ha