mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 09:01:40 +01:00
9f9da9ec96
1. add hal and low-level layer for timer group 2. add callback functions to handle interrupt 3. add timer deinit function 4. add timer spinlock take function
195 lines
6.7 KiB
C
195 lines
6.7 KiB
C
/* Application Trace to Host Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/timer.h"
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static const char *TAG = "example";
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typedef struct {
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int group;
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int timer;
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int count;
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TaskHandle_t thnd;
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} example_event_data_t;
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#if CONFIG_SYSVIEW_ENABLE
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#if !CONFIG_USE_CUSTOM_EVENT_ID
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#define SYSVIEW_EXAMPLE_SEND_EVENT_ID 0
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_ID 1
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#define SYSVIEW_EXAMPLE_SEND_EVENT_START() SEGGER_SYSVIEW_OnUserStart(SYSVIEW_EXAMPLE_SEND_EVENT_ID)
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#define SYSVIEW_EXAMPLE_SEND_EVENT_END(_val_) SEGGER_SYSVIEW_OnUserStop(SYSVIEW_EXAMPLE_SEND_EVENT_ID)
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_START() SEGGER_SYSVIEW_OnUserStart(SYSVIEW_EXAMPLE_WAIT_EVENT_ID)
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_END(_val_) SEGGER_SYSVIEW_OnUserStop(SYSVIEW_EXAMPLE_WAIT_EVENT_ID)
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#else
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#define SYSVIEW_EXAMPLE_SEND_EVENT_START_ID 0
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#define SYSVIEW_EXAMPLE_SEND_EVENT_END_ID 1
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_START_ID 2
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_END_ID 3
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#define SYSVIEW_EXAMPLE_EVENT_MAX 4
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#define SYSVIEW_EXAMPLE_SEND_EVENT_START() example_sysview_event_send(SYSVIEW_EXAMPLE_SEND_EVENT_START_ID, 0)
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#define SYSVIEW_EXAMPLE_SEND_EVENT_END(_val_) example_sysview_event_send(SYSVIEW_EXAMPLE_SEND_EVENT_END_ID, _val_)
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_START() example_sysview_event_send(SYSVIEW_EXAMPLE_WAIT_EVENT_START_ID, 0)
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_END(_val_) example_sysview_event_send(SYSVIEW_EXAMPLE_WAIT_EVENT_END_ID, _val_)
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static void example_sysview_module_send_desc(void);
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static SEGGER_SYSVIEW_MODULE s_example_sysview_module = {
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.sModule = "example_sysview_module",
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.NumEvents = SYSVIEW_EXAMPLE_EVENT_MAX,
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.pfSendModuleDesc = example_sysview_module_send_desc,
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};
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static void example_sysview_module_send_desc(void)
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{
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SEGGER_SYSVIEW_RecordModuleDescription(&s_example_sysview_module, "Example SystemView User Module");
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}
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static void example_sysview_event_send(uint32_t id, uint32_t val)
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{
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U8 aPacket[SEGGER_SYSVIEW_INFO_SIZE + SEGGER_SYSVIEW_QUANTA_U32];
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U8* pPayload = SEGGER_SYSVIEW_PREPARE_PACKET(aPacket);
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pPayload = SEGGER_SYSVIEW_EncodeU32(pPayload, val); // Add the parameter to the packet
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SEGGER_SYSVIEW_SendPacket(&aPacket[0], pPayload, s_example_sysview_module.EventOffset + id);
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}
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#endif
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#else
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#define SYSVIEW_EXAMPLE_SEND_EVENT_START()
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#define SYSVIEW_EXAMPLE_SEND_EVENT_END(_val_)
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_START()
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#define SYSVIEW_EXAMPLE_WAIT_EVENT_END(_val_)
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#endif
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static void example_timer_init(int timer_group, int timer_idx, uint32_t period)
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{
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timer_config_t config;
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uint64_t alarm_val = (period * (TIMER_BASE_CLK / 1000000UL)) / 2;
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config.alarm_en = 1;
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config.auto_reload = 1;
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config.counter_dir = TIMER_COUNT_UP;
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config.divider = 2; //Range is 2 to 65536
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config.intr_type = TIMER_INTR_LEVEL;
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config.counter_en = TIMER_PAUSE;
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/*Configure timer*/
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timer_init(timer_group, timer_idx, &config);
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/*Stop timer counter*/
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timer_pause(timer_group, timer_idx);
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/*Load counter value */
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timer_set_counter_value(timer_group, timer_idx, 0x00000000ULL);
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/*Set alarm value*/
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timer_set_alarm_value(timer_group, timer_idx, alarm_val);
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/*Enable timer interrupt*/
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timer_enable_intr(timer_group, timer_idx);
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}
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static void example_timer_isr(void *arg)
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{
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example_event_data_t *tim_arg = (example_event_data_t *)arg;
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if (tim_arg->thnd != NULL) {
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if (tim_arg->count++ < 10) {
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BaseType_t xHigherPriorityTaskWoken = pdFALSE;
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SYSVIEW_EXAMPLE_SEND_EVENT_START();
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if (xTaskNotifyFromISR(tim_arg->thnd, tim_arg->count, eSetValueWithOverwrite, &xHigherPriorityTaskWoken) != pdPASS) {
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ESP_EARLY_LOGE(TAG, "Failed to notify task %p", tim_arg->thnd);
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} else {
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SYSVIEW_EXAMPLE_SEND_EVENT_END(tim_arg->count);
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if (xHigherPriorityTaskWoken == pdTRUE) {
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portYIELD_FROM_ISR();
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}
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}
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}
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}
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// re-start timer
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timer_group_clr_intr_status_in_isr(tim_arg->group, tim_arg->timer);
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timer_group_enable_alarm_in_isr(tim_arg->group, tim_arg->timer);
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}
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static void example_task(void *p)
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{
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example_event_data_t *arg = (example_event_data_t *) p;
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timer_isr_handle_t inth;
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ESP_LOGI(TAG, "%p: run task", xTaskGetCurrentTaskHandle());
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esp_err_t res = timer_isr_register(arg->group, arg->timer, example_timer_isr, arg, 0, &inth);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "%p: failed to register timer ISR", xTaskGetCurrentTaskHandle());
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} else {
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res = timer_start(arg->group, arg->timer);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "%p: failed to start timer", xTaskGetCurrentTaskHandle());
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}
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}
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while (1) {
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uint32_t event_val;
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SYSVIEW_EXAMPLE_WAIT_EVENT_START();
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xTaskNotifyWait(0, 0, &event_val, portMAX_DELAY);
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SYSVIEW_EXAMPLE_WAIT_EVENT_END(event_val);
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ESP_LOGI(TAG, "Task[%p]: received event %d", xTaskGetCurrentTaskHandle(), event_val);
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}
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}
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void app_main(void)
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{
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static example_event_data_t event_data[portNUM_PROCESSORS] = {
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{
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.group = TIMER_GROUP_1,
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.timer = TIMER_0,
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},
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#if CONFIG_FREERTOS_UNICORE == 0
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{
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.group = TIMER_GROUP_1,
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.timer = TIMER_1,
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},
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#endif
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};
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#if CONFIG_SYSVIEW_ENABLE && CONFIG_USE_CUSTOM_EVENT_ID
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// Currently OpenOCD does not support requesting module info from target. So do the following...
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// Wait untill SystemView module receives START command from host,
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// after that data can be sent to the host using onboard API,
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// so user module description does not need to be requested by OpenOCD itself.
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while(!SEGGER_SYSVIEW_Started()) {
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vTaskDelay(1);
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}
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SEGGER_SYSVIEW_RegisterModule(&s_example_sysview_module);
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#endif
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example_timer_init(TIMER_GROUP_1, TIMER_0, 2000);
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example_timer_init(TIMER_GROUP_1, TIMER_1, 4000);
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xTaskCreatePinnedToCore(example_task, "svtrace0", 2048, &event_data[0], 3, &event_data[0].thnd, 0);
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ESP_LOGI(TAG, "Created task %p", event_data[0].thnd);
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#if CONFIG_FREERTOS_UNICORE == 0
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xTaskCreatePinnedToCore(example_task, "svtrace1", 2048, &event_data[1], 3, &event_data[1].thnd, 1);
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ESP_LOGI(TAG, "Created task %p", event_data[1].thnd);
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#endif
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}
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