Nrf52-timer-config - Revision history

Ted: /* ^ References */

2021-05-27T18:37:33Z

^ References

Ted: /* ^ References */

2021-05-04T19:43:16Z

^ References

Ted at 16:43, 4 May 2021

2021-05-04T16:43:59Z

Ted at 16:41, 4 May 2021

2021-05-04T16:41:31Z

Ted at 22:36, 3 May 2021

2021-05-03T22:36:49Z

Ted: /* ^ SIMPLE_TIMER definition */

2021-04-30T21:39:03Z

^ SIMPLE_TIMER definition

Ted: /* ^ SIMPLE_TIMER definition */

2021-04-30T20:28:09Z

^ SIMPLE_TIMER definition

Ted: /* ^ app_simple_timer.c event handler */

2021-04-29T19:21:41Z

^ app_simple_timer.c event handler

Ted: /* ^ SIMPLE_TIMER definition */

2021-04-29T19:10:54Z

^ SIMPLE_TIMER definition

Ted: /* ^ SIMPLE_TIMER definition */

2021-04-28T21:32:41Z

^ SIMPLE_TIMER definition

@@ Line 368: / Line 368: @@
 Some Nordic nRF SDK notes at Sky Blue Trades:
 *  https://skybluetrades.net/projects/nrf52840-tools-comparison/nrf5-sdk-ses/
 </ul>

@@ Line 366: / Line 366: @@
 <ul>
 *  https://www.eng.auburn.edu/~nelsovp/courses/elec3040_3050/LabLectures/ELEC30x0%20Lab7%20PWM%20Slides.pdf
 </ul>

← Older revision		Revision as of 16:43, 4 May 2021
Line 19:		Line 19:

	<pre>		<pre>
		+	void nrfx_timer_enable(nrfx_timer_t const * const p_instance)
		+	{
		+	NRFX_ASSERT(m_cb[p_instance->instance_id].state == NRFX_DRV_STATE_INITIALIZED);
		+	nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_START);
		+	m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_POWERED_ON;
		+	NRFX_LOG_INFO("Enabled instance: %d.", p_instance->instance_id);
		+	}
		+	</pre>
		+
		+	QUESTION / ISSUE: I think the timer2 provisioning code is breaking in this routine, that somehow we've missed a proper declaring and instantiating of a handle for TIMER2.

−	~~</pre>~~
	<!-- comment -->		<!-- comment -->

← Older revision		Revision as of 16:41, 4 May 2021
Line 10:		Line 10:

	<!-- comment -->		<!-- comment -->
		+
		+	Looking for the definition of Nordic demo code routine <code>
		+	nrf_drv_timer_enable</code>:
		+
		+	./integration/nrfx/legacy/nrf_drv_timer.h:76:#define nrf_drv_timer_enable nrfx_timer_enable
		+
		+	This routine is defined in <code>$(SDK)/./modules/nrfx/drivers/src/nrfx_timer.c</code>:
		+
		+	<pre>
		+
		+	</pre>
		+	<!-- comment -->
		+
	2021-04-25		2021-04-25

← Older revision		Revision as of 22:36, 3 May 2021
Line 321:		Line 321:

	<!-- comment -->		<!-- comment -->
		+
		+	== [[#top\|^]] app_simple_timer_timeout_handler_t ==
		+	Info on the function or callback pointer type associated with nRF52xxx timer demo codes:
		+	* https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Fgroup__app__simple__timer.html
		+
		+	<!-- comment -->
		+

	== [[#top\|^]] Sources and leads to review ==		== [[#top\|^]] Sources and leads to review ==

← Older revision		Revision as of 21:39, 30 April 2021
Line 207:		Line 207:
	./examples/peripheral/simple_timer/pca10040/blank/config/sdk_config.h:623:#define SIMPLE_TIMER_CONFIG_INSTANCE 1		./examples/peripheral/simple_timer/pca10040/blank/config/sdk_config.h:623:#define SIMPLE_TIMER_CONFIG_INSTANCE 1

		+
		+	A few more definitions:
		+
		+	* <code>./modules/nrfx/hal/nrf_timer.h:166:} nrf_timer_short_mask_t;</code>
		+	<pre>
		+	/**
		+	* @brief Types of timer shortcuts.
		+	*/
		+	typedef enum
		+	{
		+	NRF_TIMER_SHORT_COMPARE0_STOP_MASK = TIMER_SHORTS_COMPARE0_STOP_Msk, ///< Shortcut for stopping the timer based on compare 0.
		+	NRF_TIMER_SHORT_COMPARE1_STOP_MASK = TIMER_SHORTS_COMPARE1_STOP_Msk, ///< Shortcut for stopping the timer based on compare 1.
		+	NRF_TIMER_SHORT_COMPARE2_STOP_MASK = TIMER_SHORTS_COMPARE2_STOP_Msk, ///< Shortcut for stopping the timer based on compare 2.
		+	NRF_TIMER_SHORT_COMPARE3_STOP_MASK = TIMER_SHORTS_COMPARE3_STOP_Msk, ///< Shortcut for stopping the timer based on compare 3.
		+	#if defined(TIMER_INTENSET_COMPARE4_Msk) \|\| defined(__NRFX_DOXYGEN__)
		+	NRF_TIMER_SHORT_COMPARE4_STOP_MASK = TIMER_SHORTS_COMPARE4_STOP_Msk, ///< Shortcut for stopping the timer based on compare 4.
		+	#endif
		+	#if defined(TIMER_INTENSET_COMPARE5_Msk) \|\| defined(__NRFX_DOXYGEN__)
		+	NRF_TIMER_SHORT_COMPARE5_STOP_MASK = TIMER_SHORTS_COMPARE5_STOP_Msk, ///< Shortcut for stopping the timer based on compare 5.
		+	#endif
		+	NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK = TIMER_SHORTS_COMPARE0_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 0.
		+	NRF_TIMER_SHORT_COMPARE1_CLEAR_MASK = TIMER_SHORTS_COMPARE1_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 1.
		+	NRF_TIMER_SHORT_COMPARE2_CLEAR_MASK = TIMER_SHORTS_COMPARE2_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 2.
		+	NRF_TIMER_SHORT_COMPARE3_CLEAR_MASK = TIMER_SHORTS_COMPARE3_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 3.
		+	#if defined(TIMER_INTENSET_COMPARE4_Msk) \|\| defined(__NRFX_DOXYGEN__)
		+	NRF_TIMER_SHORT_COMPARE4_CLEAR_MASK = TIMER_SHORTS_COMPARE4_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 4.
		+	#endif
		+	#if defined(TIMER_INTENSET_COMPARE5_Msk) \|\| defined(__NRFX_DOXYGEN__)
		+	NRF_TIMER_SHORT_COMPARE5_CLEAR_MASK = TIMER_SHORTS_COMPARE5_CLEAR_Msk, ///< Shortcut for clearing the timer based on compare 5.
		+	#endif
		+	} nrf_timer_short_mask_t;
		+	</pre>

	<!-- comment -->		<!-- comment -->

@@ Line 147: / Line 147: @@
 The symbol <code>SIMPLE_TIMER</code> we encounter first in _59ac345/components/libraries/simple_timer/app_simple_timer.c on line 64:
-<span id="section--simple-timer-def--excerpt-1</span>
+<span id="section--simple-timer-def--excerpt-1></span>
    <i>excerpt 1:</i>    const nrf_drv_timer_t SIMPLE_TIMER = NRF_DRV_TIMER_INSTANCE(SIMPLE_TIMER_CONFIG_INSTANCE);

@@ Line 239: / Line 239: @@
+     }
+}
 </pre>

← Older revision		Revision as of 19:10, 29 April 2021
Line 207:		Line 207:
	./examples/peripheral/simple_timer/pca10040/blank/config/sdk_config.h:623:#define SIMPLE_TIMER_CONFIG_INSTANCE 1		./examples/peripheral/simple_timer/pca10040/blank/config/sdk_config.h:623:#define SIMPLE_TIMER_CONFIG_INSTANCE 1

		+
		+	<!-- comment -->
		+
		+	== [[#top\|^]] app_simple_timer.c event handler ==
		+
		+	So in initializing its timer, the nRF example code we're following here references an event handler for TIMERn type events. This code specifically is located in <code>nRF5_SDK_15.3.0_59ac345/components/libraries/simple_timer/app_simple_timer.c</code>, where 'nRF5_SDK_15.3.0_59ac345' is the top level directory which unpacks from nRF's SDK 15.3.0 code bundle. It is this code bundle which provides the S132 soft device code for the nRF52832 SoC.
		+
		+	Here is the event handler, which only gives us some initial idea how to proceed with our own event handler. Of note is the first and only named case in the switch statement. Be worth looking for an enumeration of TIMERn type events among SDK sources . . .
		+
		+	<pre>
		+	/**
		+	* @brief Handler for timer events.
		+	*/
		+	static void app_simple_timer_event_handler(nrf_timer_event_t event_type, void * p_context)
		+	{
		+	switch (event_type)
		+	{
		+	case NRF_TIMER_EVENT_COMPARE0:
		+	if (m_mode == APP_SIMPLE_TIMER_MODE_SINGLE_SHOT)
		+	{
		+	m_simple_timer_state = SIMPLE_TIMER_STATE_STOPPED;
		+	}
		+
		+	//@note: No NULL check required as performed in timer_start(...).
		+	m_timeout_handler(mp_timeout_handler_context);
		+	break;
		+
		+	default:
		+	//Do nothing.
		+	break;
		+	}
		+	}
		+	</pre>

	<!-- comment -->		<!-- comment -->

@@ Line 147: / Line 147: @@
 The symbol <code>SIMPLE_TIMER</code> we encounter first in _59ac345/components/libraries/simple_timer/app_simple_timer.c on line 64:
+<span id="section--simple-timer-def--excerpt-1</span>
-   const nrf_drv_timer_t SIMPLE_TIMER = NRF_DRV_TIMER_INSTANCE(SIMPLE_TIMER_CONFIG_INSTANCE);
+   <i>excerpt 1:</i>    const nrf_drv_timer_t SIMPLE_TIMER = NRF_DRV_TIMER_INSTANCE(SIMPLE_TIMER_CONFIG_INSTANCE);
@@ Line 191: / Line 191: @@
 </pre>
-Given these the above line <i>_excerpt_1_</i> expands to:
+Given these the above line <i>[[#section--simple-timer-def--excerpt-1|_excerpt_1_]]</i> expands to:
 <pre>
 const nrf_drv_timer_t SIMPLE_TIMER =
+   {
-       .p_regv           = NRF_TIMER#id,
+       .p_reg            = NRF_TIMER#id,
        .instance_id      = NRFX_TIMER#id#_INST_IDX,
        .cc_channel_count = TIMER#id#_CC_NUM,