TQ2416 development board TIMER interrupt application control device

       This issue introduces the control device code application of the new generation ARM9 development board TQ2416, using TIMER code to control the time period of the device. Timer syntax, timer code, the function is to repeatedly trigger the timer event of the specified window within the specified time interval.

　　Below is what senior blogger dengchonglin shared about how to apply TIMER code on the TQ2416 development board.

　　If you need to use the TQ2416 development board as a control device, you need to implement US level interrupts~!

　　And it cannot be realized by FOR loop, because FOR loop is a timer that temporarily uses resources. This will make the CPU of the development board too expensive and unable to bear it. Using TIMER code can better run the control program.

　　I looked at the DATASHEET and found that there are 5 TIMERs: TIMER0~3 PWM output, TIMER4 system TICK

　　TIMER4 TICK

　　TIMER3 TOUCH

　　TIMER2

　　TIMER1

　　TIMER0 BL

　　Finally decided to use TIMER2 interrupt to achieve.

　　1. Apply for an event

　　2. Start a thread to wait for an interrupt event

　　3. Set TIMER2 PWM

　　g_pPWMRegs->TCFG1 &= (~(0xf<<20)); //For interrupt

　　g_pPWMRegs->TCFG1 &= (~(0xf<<8));

　　g_pPWMRegs->TCFG1 |= (0<<8); //mux = 1/2

　　g_pPWMRegs->TCON &= (~(0xf<<12));

　　Set the timer time

　　void Set_Timer(UINT32 nUS)

　　{

　　DWORD tmp;

　　g_pPWMRegs->TCNTB2 = nUS*g_PRINTER_1us_Counter - 1;

　　g_pPWMRegs->TCMPB2 = 0 ;

　　//Be sure to use the following assignment method, otherwise no interrupt will occur

　　tmp = g_pPWMRegs->TCON & (~(0xf << 12));

　　g_pPWMRegs->TCON = tmp | (2 << 12);

　　g_pPWMRegs->TCON = tmp | (1 << 12);

　　}

　　At this point, TIMER2 is already running!