| /Zephyr-latest/samples/boards/nordic/nrf_sys_event/src/ |
| D | main.c | 12 printf("request global constant latency mode\n"); in main()
14 printf("failed to request global constant latency mode\n"); in main()
17 printf("constant latency mode enabled\n"); in main()
19 printf("request global constant latency mode again\n"); in main()
21 printf("failed to request global constant latency mode\n"); in main()
25 printf("release global constant latency mode\n"); in main()
26 printf("constant latency mode will remain enabled\n"); in main()
28 printf("failed to release global constant latency mode\n"); in main()
32 printf("release global constant latency mode again\n"); in main()
33 printf("constant latency mode will be disabled\n"); in main()
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| /Zephyr-latest/samples/subsys/pm/latency/ |
| D | sample.yaml | 2 name: Demonstrate usage of the PM policy latency APIs
4 sample.pm.latency:
20 - "<inf> app: Setting latency constraint: 30ms"
28 - "<inf> dev_test: Adding latency constraint: 20ms"
29 - "<inf> app: Latency constraint changed: 20ms"
36 - "<inf> app: Updating latency constraint: 10ms"
37 - "<inf> app: Latency constraint changed: 10ms"
38 - "<inf> dev_test: Latency constraint changed: 10ms"
42 - "<inf> app: Updating latency constraint: 30ms"
43 - "<inf> app: Latency constraint changed: 20ms"
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| /Zephyr-latest/samples/subsys/pm/latency/src/ |
| D | main.c | 16 static void on_latency_changed(int32_t latency) in on_latency_changed() argument
18 if (latency == SYS_FOREVER_US) { in on_latency_changed()
19 LOG_INF("Latency constraint changed: none"); in on_latency_changed()
21 LOG_INF("Latency constraint changed: %" PRId32 "ms", in on_latency_changed()
22 latency / USEC_PER_MSEC); in on_latency_changed()
40 /* test without any latency constraint */ in main()
48 /* add an application level latency constraint */ in main()
49 LOG_INF("Setting latency constraint: 30ms"); in main()
60 /* open test device (adds its own latency constraint) */ in main()
64 /* test with application + driver latency constraints */ in main()
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| D | test.c | 20 static void on_latency_changed(int32_t latency) in on_latency_changed() argument
22 if (latency == SYS_FOREVER_US) { in on_latency_changed()
23 LOG_INF("Latency constraint changed: none"); in on_latency_changed()
25 LOG_INF("Latency constraint changed: %" PRId32 "ms", in on_latency_changed()
26 latency / USEC_PER_MSEC); in on_latency_changed()
34 LOG_INF("Adding latency constraint: 20ms"); in dev_test_open()
44 LOG_INF("Removing latency constraint"); in dev_test_close()
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| /Zephyr-latest/subsys/bluetooth/controller/ll_sw/openisa/lll/ |
| D | lll_prof.c | 30 /* sample the packet timer, use it to calculate ISR latency in lll_prof_latency_capture()
52 /* get the ISR latency sample */ in lll_prof_cputime_capture()
63 uint8_t latency, cputime, prev; in lll_prof_send() local
70 latency = timestamp_latency - timestamp_radio_end; in lll_prof_send()
72 latency = timestamp_latency - radio_tmr_end_get(); in lll_prof_send()
75 /* check changes in min, avg and max of latency */ in lll_prof_send()
76 if (latency > latency_max) { in lll_prof_send()
77 latency_max = latency; in lll_prof_send()
80 if (latency < latency_min) { in lll_prof_send()
81 latency_min = latency; in lll_prof_send()
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| /Zephyr-latest/soc/nordic/common/ |
| D | mram_latency.h | 8 * nRF SoC specific public APIs for MRAM latency management
9 * @brief Experimental. It will be replaced by the PM latency policy API in the future.
24 /** @brief Request MRAM operations without latency.
27 * an operation to request the MRAM low latency. If initiation of the
37 * with the MRAM latency service.
38 * @retval -EIO if MRAM latency service returned error.
44 /** @brief Request MRAM operations without latency.
50 * @retval -EIO if MRAM latency service returned error.
56 * @brief Safely cancel a request for MRAM operations without latency.
72 * @retval -EIO if MRAM latency service returned error.
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| D | nrf_sys_event.h | 10 * @brief Request lowest latency for system events
12 * @details System will be configured for lowest latency after first
14 * configured for lowest latency until matching number of calls to
23 * @brief Release low latency request
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| D | Kconfig | 15 bool "MRAM latency manager"
29 bool "Request MRAM without latency at start"
31 When enabled then MRAM configuration without latency is requested
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| /Zephyr-latest/subsys/bluetooth/controller/ll_sw/nordic/lll/ |
| D | lll_prof.c | 108 /* sample the packet timer, use it to calculate ISR latency in lll_prof_latency_capture()
121 uint16_t latency; in lll_prof_latency_get() local
125 /* get the ISR latency sample */ in lll_prof_latency_get()
132 latency = latency_get(); in lll_prof_latency_get()
134 return latency; in lll_prof_latency_get()
153 /* get the ISR latency sample */ in lll_prof_cputime_capture()
203 uint16_t latency, cputime, prev; in send() local
211 latency = latency_get(); in send()
213 /* check changes in min, avg and max of latency */ in send()
214 if (latency > latency_max) { in send()
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| /Zephyr-latest/boards/nordic/nrf5340_audio_dk/ |
| D | nrf5340_audio_dk_config.c | 16 nrf_gpiote_latency_t latency; in core_config() local
18 latency = nrf_gpiote_latency_get(NRF_GPIOTE); in core_config()
20 if (latency != NRF_GPIOTE_LATENCY_LOWPOWER) { in core_config()
21 LOG_DBG("Setting gpiote latency to low power"); in core_config()
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| /Zephyr-latest/include/zephyr/pm/ |
| D | policy.h | 30 * @brief Callback to notify when maximum latency changes.
32 * @param latency New maximum latency. Positive value represents latency in
33 * microseconds. SYS_FOREVER_US value lifts the latency constraint. Other values
36 typedef void (*pm_policy_latency_changed_cb_t)(int32_t latency);
39 * @brief Latency change subscription.
51 * @brief Latency request.
149 * latency. Once woken up, the CPU will be kept awake until the event has been
277 * @brief Add a new latency requirement.
280 * exceed the given latency value.
282 * @param req Latency request.
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| /Zephyr-latest/subsys/pm/policy/ |
| D | policy_latency.c | 14 /** Lock to synchronize access to the latency request list. */
16 /** List of maximum latency requests. */
18 /** Maximum CPU latency in us */
20 /** Maximum CPU latency in cycles */
22 /** List of latency change subscribers. */
25 /** @brief Update maximum allowed latency. */
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| D | Kconfig | 37 bool "Allow gathering latency requirements in standalone mode"
40 This option allows using the pm_policy_latency* APIs to gather latency
43 be useful to perform system-level adjustments based on latency
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| /Zephyr-latest/soc/nordic/nrf54l/ |
| D | Kconfig | 70 bool "Force constant-latency mode"
72 In constant latency mode the CPU wakeup latency and the PPI task response
75 and predictable latency will be at the cost of having increased power consumption.
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| /Zephyr-latest/samples/subsys/pm/latency/boards/ |
| D | native_sim.overlay | 12 exit-latency-us = <10000>;
18 exit-latency-us = <20000>;
24 exit-latency-us = <30000>;
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| /Zephyr-latest/tests/subsys/pm/policy_api/src/ |
| D | main.c | 148 /** Flag to indicate expected latency */
154 static void on_pm_policy_latency_changed(int32_t latency) in on_pm_policy_latency_changed() argument
156 TC_PRINT("Latency changed to %d\n", latency); in on_pm_policy_latency_changed()
158 zassert_equal(latency, expected_latency); in on_pm_policy_latency_changed()
165 * latency requirements are imposed and CONFIG_PM_POLICY_DEFAULT=y.
173 /* add a latency requirement with a maximum value below the in ZTEST()
174 * latency given by any state, so we should stay active all the time in ZTEST()
184 /* update latency requirement to a value between latencies for in ZTEST()
196 /* add a new latency requirement with a maximum value below the in ZTEST()
197 * latency given by any state, so we should stay active all the time in ZTEST()
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| /Zephyr-latest/tests/subsys/pm/policy_api/ |
| D | app.overlay | 20 exit-latency-us = <10000>;
28 exit-latency-us = <100000>;
36 exit-latency-us = <50000>;
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| /Zephyr-latest/tests/subsys/pm/power_states_api/boards/ |
| D | native_sim.overlay | 18 exit-latency-us = <100>;
25 exit-latency-us = <200>;
32 exit-latency-us = <500>;
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| /Zephyr-latest/tests/benchmarks/latency_measure/ |
| D | testcase.yaml | 8 benchmark.kernel.latency:
29 benchmark.kernel.latency.stm32:
44 benchmark.kernel.latency.userspace:
60 benchmark.kernel.latency.objcore:
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| /Zephyr-latest/samples/boards/microchip/mec15xxevb_assy6853/power_management/src/ |
| D | power_mgmt.c | 25 /* Maximum latency should be less than 300 ms */
56 /* Instrumentation to measure latency and track entry exit via gpios
73 int64_t latency; in pm_latency_check() local
77 latency = k_uptime_delta(&trigger_time); in pm_latency_check()
78 secs = (int)(latency / SEC_TO_MSEC); in pm_latency_check()
79 msecs = (int)(latency % SEC_TO_MSEC); in pm_latency_check()
80 LOG_INF("PM sleep entry latency %d.%03d seconds", secs, msecs); in pm_latency_check()
83 LOG_WRN("Sleep entry latency is too high"); in pm_latency_check()
88 LOG_WRN("Sleep entry latency is higher than expected"); in pm_latency_check()
304 /* GPIO toggle to measure latency for deep sleep */ in test_pwr_mgmt_multithread()
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| /Zephyr-latest/drivers/memc/ |
| D | memc_mcux_flexspi_aps6408l.c | 45 /* Read Latency code (MR0[4:2]) */
47 #define APS_6408L_RLC_200 0x10 /* 200MHz input clock read latency */
48 /* Read Latency type (MR0[5]) */
50 #define APS_6408L_RLT_VARIABLE 0x0 /* Variable latency */
59 /* Write latency (MR4[7:5]) */
61 #define APS_6408L_WLC_200 0x20 /* 200MHz input clock write latency */
252 /* Set read latency code and type for 200MHz flash clock operation */ in memc_flexspi_aps6408l_init()
256 LOG_ERR("Could not set 200MHz read latency code"); in memc_flexspi_aps6408l_init()
259 /* Set write latency code and type for 200MHz flash clock operation */ in memc_flexspi_aps6408l_init()
262 LOG_ERR("Could not set 200MHz write latency code"); in memc_flexspi_aps6408l_init()
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| /Zephyr-latest/samples/boards/st/power_mgmt/suspend_to_ram/boards/ |
| D | nucleo_wba55cg.overlay | 17 exit-latency-us = <50>;
21 exit-latency-us = <100>;
25 exit-latency-us = <1000>;
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| /Zephyr-latest/subsys/bluetooth/controller/ll_sw/ |
| D | lll_common.c | 51 * 4. Latency (skipped- and programmed latency) in lll_prepare()
58 prio = MAX(-127, prio - hdr->score - hdr->latency); in lll_prepare()
92 hdr->latency = 0; in lll_done_score()
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| /Zephyr-latest/tests/arch/arm/arm_irq_advanced_features/src/ |
| D | arm_zero_latency_irqs.c | 74 "No available IRQ line to configure as zero-latency\n"); in ZTEST()
78 /* Configure the available IRQ line as zero-latency. */ in ZTEST()
91 /* Set the zero-latency IRQ to pending state. */ in ZTEST()
101 /* Confirm test flag is set by the zero-latency ISR handler. */ in ZTEST()
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| /Zephyr-latest/tests/arch/arm/arm_irq_zero_latency_levels/src/ |
| D | main.c | 145 "No available IRQ line to configure as zero-latency\n"); in find_unused_irq()
154 * Confirm that a zero-latency interrupt with lower priority will be in ZTEST()
155 * interrupted by a zero-latency interrupt with higher priority. in ZTEST()
167 /* Configure IRQ A as zero-latency interrupt with prio 1 */ in ZTEST()
173 /* Configure irq_b as zero-latency interrupt with prio 0 */ in ZTEST()
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