Realtime task with esp32

[edo76malParticipant]

Hi.

I’m using a wroom32 with visual studio 2022. I need to have a real time task running to 250Hz frequency. I tried to modify “Hello world” sample in order to achieve the target: I set 1000 Hz tick rate for freeRTOs. The best result is 125 Hz, if I try to get better rate it fails.

My task is this:

 

C++

static void yys_rtc_task(void* arg) { static int64_t time = 0; static int64_t endTime = 0; static int64_t deltaT = 0; static TickType_t xLastWakeTime; static const TickType_t xFrequency = 7; static BaseType_t xWasDelayed; // Initialise the xLastWakeTime variable with the current time. xLastWakeTime = xTaskGetTickCount(); for (;;) { time = esp_timer_get_time(); deltaT = time - endTime; endTime = time; // Wait for the next cycle. //xWasDelayed = xTaskDelayUntil(&xLastWakeTime, xFrequency); vTaskDelayUntil(&xLastWakeTime, xFrequency); // time = esp_timer_get_time(); // deltaT = time - endTime; // endTime = time; // Perform action here. xWasDelayed value can be used to determine // whether a deadline was missed if the code here took too long. ESP_LOGE("TEST", "time %lld -- deltaT %lld -- xWasDelayed %d", time, deltaT, xWasDelayed); } }

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static void yys_rtc_task(void* arg) { static int64_t time = 0; static int64_t endTime = 0; static int64_t deltaT = 0; static TickType_t xLastWakeTime; static const TickType_t xFrequency = 7; static BaseType_t xWasDelayed;   // Initialise the xLastWakeTime variable with the current time. xLastWakeTime = xTaskGetTickCount(); for (;;) { time = esp_timer_get_time(); deltaT = time - endTime; endTime = time; // Wait for the next cycle. //xWasDelayed = xTaskDelayUntil(&xLastWakeTime, xFrequency); vTaskDelayUntil(&xLastWakeTime, xFrequency);   // time = esp_timer_get_time(); // deltaT = time - endTime; // endTime = time;   // Perform action here. xWasDelayed value can be used to determine // whether a deadline was missed if the code here took too long. ESP_LOGE("TEST", "time %lld -- deltaT %lld -- xWasDelayed %d", time, deltaT, xWasDelayed); } }

• This topic was modified 3 months, 2 weeks ago by  support. Reason: formatting

[supportKeymaster]

Hi,

This looks like a question about the ESP-IDF framework and not something specific to VisualGDB. Please consider asking on the Espressif forums instead. Any advice they may suggest will also work with VisualGDB.

[Author]

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