Continuous technological innovation and breakthroughs have given rise to IoT systems with higher frequencies, lower latency and higher integration. In such systems, antennas and sensors, as the tentac
Functional Overview:Implement a 4x4 key matrix. Through key scanning, when a key is pressed, identify the key value, send it through the UART serial port, and display it on the LCD1602.
功能实现:
1. 按键扫描
1. Use USB to convert to RS-232 (TLL level) directly on the hardware. Connect TX to PA10. Connect RX to PA9
2.main.c initialization
int main(void)
{uint8_t *test="turn off LED1";uint8_t *test1="turn o
The circuit is composed of VT1, VT2, capacitors C2, C3, resistors R1, R2, R3, R4, etc., which together form an oscillation circuit. The oscillation frequency is controlled by R6, one end of which is c