SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
16.3.2.5 Wait-for-Trigger Mode
Wait-for-trigger mode allows daisy-chaining of the timer modules such that once configured, a single timer can initiate multiple timing events using the timer triggers. Wait-for-trigger mode is enabled by setting the GPT:TnMR TnWOT register bit. When the TnWOT bit is set, timer N+1 does not begin counting until the timer in the previous position in the daisy-chain (timer N) reaches its time-out event. The daisy-chain is configured such that GPTM1 always follows GPTM0, GPTM2 follows GPTM1, and so forth. If Timer A is configured as a 32-bit (16 or 32-bit mode) timer (controlled by the CFG field in the GPT:CFG register), it triggers Timer A in the next module. If Timer A is configured as a 16-bit (16- or 32-bit mode) timer, it triggers Timer B in the same module and Timer B triggers Timer A in the next module. Ensure that the TAWOT bit is never set in GPTM0. Figure 16-8 shows how the GPT:CFG CFG register bit affects the daisy-chain. This function is valid for one-shot and periodic modes.
Figure 16-8 Timer Daisy-Chain