• Duration:14 minutes and 59 seconds
  • Date:2019/11/15
  • Uploader:抛砖引玉
Introduction
keywords: lpwan at lora
This on-line training includes 3 different hands-on training sessions directly from an STM32 expert on how to connect your application to the cloud via a long-range network. 
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The P1 port of 89C51 is connected to a common anode digital tube, and the debounce switch is used to generate an interrupt request signal. Each time the switch is toggled back and forth, an interrupt is generated, and the digital tube is used to display the number of interrupts (no more than 15 times)
,#0FFH,AL1 MOV P0,#0 CLR EA SJMP $ INT1: INC R0 MOV A,R0 MOV DPTR,#TAB MOVC A,@A+DPTR POP DPH POP DPL MOV DPTR,#AL1 PUSH DPL PUSH DPH RETI TAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H DB 80H,90H,88H,8
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1. System initialization, and timer0 interrupt time set to 60MHz, 500 000 uSecond InitCpuTimers(); ConfigCpuTimer(CpuTimer0, 60, 500000); CpuTimer0Regs.TCR.all = 0x4001; // Use write-only instruction
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