Q1. Given the following setup code for Timer 2, write an Interrupt Service Routine (ISR)

Q1. Given the following setup code for Timer 2, write an Interrupt Service Routine (ISR) for Timer 3 that uses INV to toggle the LED light connected to Port A, RA5. The ISR should be called Timer3Interrupt. Timer 3 setup: Internal fPB clock is 40Mhz , pre-scalar 1:256

Q2. a) If TAD = 85 * 10-9 (85 ns) Seconds (Assume PBclk-Freq = 40 MHz , [2 Marks] So TPB = 1 PBclk − Freq ), Calculate the ADC’s value. Hint: TAD = 2 * (TPB * (ADCs + 1)) b) Write the following Setup code for the ADC with manual sampling and manual conversion.

Q3a.Write a program using an Interrupt Service Routine that does the following : Waits for a Single High Pulse of 250 ms on Pin OC3. When the High Pulse goes from High to low , it turns ON the LED at Port A, RA3 and the LED then stays on.

You will use the Output Compare OC1, Dual Compare mode with a Single High Pulse (OCM= 004). You will use Timer 3 for the OC with a pre-scale value of 256. You need to setup OC3RS and OC3R such that OC3RS – OC3R = 200 ms. We need to convert 200 ms into Timer Clock Cycles. We have Timer 3 with a fpb is 10 Mhz and a Precale of 1:64.

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