12/14/2023 0 Comments Pic ccp as timer![]() Timer Period Register (`PR1`): The desired timer period is set in this register. Timer Value Register (`TMR1`): The current counter value of the timer can be read from this register.ģ. Note that the CCP modules contain a bit more functionality so they have 3 control registers each.Ģ. Most notable of these are the on/off bit, prescaler select bits, and clock source select bits. Timer Control (`T1CON`): Contains various bits that configure the operation of the timer. ![]() For the standalone timer (`Timer1`), there are 3 main registers to remember:ġ. The PIC32 MM contains a total of 7 16-bit timers: one standalone 16-bit timer and 2 16-bit timers integrated in each of the 3 Capture/Compare/PWM (CCP) modules. source: PIC32MM Family Reference Manual Figure 30-1 shows how these functions are realized inside the microcontroller. *Pulse Width Modulation* (PWM) was already previewed in the previous week and is a specific mode of operation of the OC module. *Output Compare* (OC), on the other hand, compares the timer register to a specified value and toggles its output based on the result. *Input Capture* (IC) provides a way for the microcontroller to *capture* the specific moment an input changes. To know how it exactly does this things, Kevin Lynch provides us with ().Ī Capture/Compare/PWM module is a timer module with extended the functionality of an input capture and output compare module. Alternatively, timers are also used to generate interrupts after a programmed time period has elapsed. It does this by counting the number of clock cycles that have elapsed since the timer was activated. ![]() Timers, as the name suggests, allow the microcontroller to measure periods of time. * To use the integrated OC module and configure it for PWM and use it to modulate the brightness of an LED. * To explore the funtionality of the CCP module of the PIC32. * To call periodic subroutines using the timer module with interrupts. * To use the timer module to generate delays with polling and interrupts. * To properly configure PIC32 timer modules to have a specified period. * The video walkthrough for this module is available here: () and (). * The function of SFRs here are summarized and only the control bits necessary for the exercises are mentioned check the datasheet for the complete list and more information. * The sample codes given are for reference only, these are not meant to be ran as they are. * The length of the videos are indicated inside the parentheses for your reference. * The videos mentioned in this document are just supplementary and optional.
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