Explorer 16 will be used.
Question 1.
To set up the interrupt mechanism for Timer1, mention the name of the specific registers and the specific bits that need to be configured.
To set up the interrupt mechanism for Timer1 on the Explorer 16 board, the specific registers that need to be configured are:
1. T1CON (Timer1 Control Register): This register controls the operation of Timer1 and its interrupt settings. The specific bits to configure are:
- TMR1ON (bit 15): Set this bit to enable Timer1.
- TMR1CS (bit 7): Set this bit to select the clock source for Timer1.
- T1CKPS (bits 5-4): Set these bits to configure the Timer1 prescaler value.
- T1OSCEN (bit 3): Set this bit to enable the Timer1 oscillator.
- T1SYNC (bit 2): Set this bit to synchronize the external clock input with the system clock.
- TMR1IE (bit 0): Set this bit to enable the Timer1 interrupt.
2. TMR1IF (Timer1 interrupt flag): This is a bit in the INTCON register. Set this bit to trigger the Timer1 interrupt.
Note: The specific register and bit names can vary depending on the microcontroller used with the Explorer 16 board. The configurations mentioned above are for general reference.
To set up the interrupt mechanism for Timer1 on the Explorer 16 board, you need to configure the following specific registers and bits:
1. Interrupt Enable register (INTCONbits.GIE): This register controls the global interrupt enable. Set the GIE bit to 1 to enable interrupts globally.
2. Timer1 Interrupt Enable register (PIE1bits.TMR1IE): This register controls the Timer1 interrupt enable. Set the TMR1IE bit to 1 to enable Timer1 interrupts.
3. Timer1 Interrupt Priority register (IPR1bits.TMR1IP): This register controls the Timer1 interrupt priority. Set the TMR1IP bit to 1 for high-priority interrupt, or set it to 0 for low-priority interrupt.
4. Timer1 Interrupt Flag register (PIR1bits.TMR1IF): This register is automatically set when the Timer1 interrupt occurs. You should clear this flag manually by setting the TMR1IF bit to 0 before exiting the interrupt service routine.
By configuring these specific registers and bits, you can enable and handle Timer1 interrupts on the Explorer 16 board.
To set up the interrupt mechanism for Timer1 on the Explorer 16 board, you need to configure the following specific registers and bits:
1. INTCON3 register: This register controls the interrupt flags for Timer1. Specifically, you need to configure the following bits:
- TMR1IE (Timer1 Interrupt Enable): Set this bit to enable interrupts from Timer1.
- TMR1IF (Timer1 Interrupt Flag): This bit is automatically set when the Timer1 interrupt occurs. You should clear this bit explicitly in the interrupt service routine.
2. IEC0 register: This register controls the global enable/disable for different peripheral interrupts. Configure the following bit:
- INT1IE (Interrupt 1 Enable): Set this bit to enable interrupts from Timer1.
3. IPC0 register: This register sets the interrupt priority for different peripherals. Configure the following bits:
- T1IP (Timer1 Interrupt Priority): Set the priority level of the Timer1 interrupt by configuring these three bits. The priority level can range from 1 to 7, with 7 being the highest priority.
By configuring these registers and bits, you can set up the interrupt mechanism for Timer1 on the Explorer 16 board. Remember to also write the interrupt service routine code to handle the Timer1 interrupt and perform the desired actions.