Difference between revisions of "Nrf52-timer-config"
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Looking at some example code in <code>nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/components/app_simple_timer.c</code>, there are routines to init, start, stop (pause) and to uninitialize. Given a task to assure that a Nordic chip goes into lower or lowest possible power mode, we'll first examine the 'stop' and 'uninit' routines in this Nordic demo code. | Looking at some example code in <code>nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/components/app_simple_timer.c</code>, there are routines to init, start, stop (pause) and to uninitialize. Given a task to assure that a Nordic chip goes into lower or lowest possible power mode, we'll first examine the 'stop' and 'uninit' routines in this Nordic demo code. | ||
| − | The routine <code> uint32_t app_simple_timer_stop(void)</code> is a wrapper to <code> nrf_drv_timer_pause()</code>. Going through reverse engineering steps this routine is first defined via a macro: | + | The routine <code> uint32_t app_simple_timer_stop(void)</code> is a wrapper to <code> nrf_drv_timer_pause(nrfx_timer_t const * const p_instance)</code>. Going through reverse engineering steps this routine is first defined via a macro: |
./integration/nrfx/legacy/nrf_drv_timer.h:82:#define nrf_drv_timer_pause nrfx_timer_pause | ./integration/nrfx/legacy/nrf_drv_timer.h:82:#define nrf_drv_timer_pause nrfx_timer_pause | ||
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| + | The definition of <code>nrfx_timer_pause()</code> is in the following .c file, | ||
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| + | ./modules/nrfx/drivers/include/nrfx_timer.h:186:void nrfx_timer_pause(nrfx_timer_t const * const p_instance); | ||
| + | ./modules/nrfx/drivers/src/nrfx_timer.c:170:void nrfx_timer_pause(nrfx_timer_t const * const p_instance) | ||
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nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules | nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules | ||
nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules/nrfx/drivers/include | nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules/nrfx/drivers/include | ||
| + | nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules/nrfx/drivers/src | ||
| + | nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/integration/nrfx/legacy | ||
</pre> | </pre> | ||
Revision as of 14:36, 25 April 2021
2021-04-25
Looking at some example code in nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/components/app_simple_timer.c, there are routines to init, start, stop (pause) and to uninitialize. Given a task to assure that a Nordic chip goes into lower or lowest possible power mode, we'll first examine the 'stop' and 'uninit' routines in this Nordic demo code.
The routine uint32_t app_simple_timer_stop(void) is a wrapper to nrf_drv_timer_pause(nrfx_timer_t const * const p_instance). Going through reverse engineering steps this routine is first defined via a macro:
./integration/nrfx/legacy/nrf_drv_timer.h:82:#define nrf_drv_timer_pause nrfx_timer_pause
The definition of nrfx_timer_pause() is in the following .c file,
./modules/nrfx/drivers/include/nrfx_timer.h:186:void nrfx_timer_pause(nrfx_timer_t const * const p_instance); ./modules/nrfx/drivers/src/nrfx_timer.c:170:void nrfx_timer_pause(nrfx_timer_t const * const p_instance)
First Nordic demo code directories in which we're reviewing files:
nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/components/libraries/simple_timer nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules/nrfx/drivers/include nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/modules/nrfx/drivers/src nRF5SDK153059ac345/nRF5_SDK_15.3.0_59ac345/integration/nrfx/legacy
