ESP-IDF V5.12/V5.2 使用pnct例程时 得到的脉冲数总是为1？？？用之前的旧的驱动文件是可以。。。
以下这个源码 请帮助分析一下什么原因？？？？
/* Pulse counter module - Example
For other examples please check:
https://github.com/espressif/esp-idf/tr ... r/examples
This example code is in the Public Domain (or CC0 licensed, at your op
tion.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "esp_log.h"
#include "driver/pulse_cnt.h" //新的驱动文件
#include "driver/gpio.h"
#include "esp_sleep.h"
#include "driver/ledc.h"
static const char *TAG = "example";
#define EXAMPLE_PCNT_HIGH_LIMIT 30000
#define EXAMPLE_PCNT_LOW_LIMIT -30000
#define EXAMPLE_EC11_GPIO_A 23
#define EXAMPLE_EC11_GPIO_B 2
#define LEDC_TIMER LEDC_TIMER_0
#define LEDC_MODE LEDC_LOW_SPEED_MODE
#define LEDC_OUTPUT_IO (5) // Define the output GPIO
#define LEDC_CHANNEL LEDC_CHANNEL_0
#define LEDC_DUTY_RES LEDC_TIMER_13_BIT // Set duty resolution to 13 bits
#define LEDC_DUTY (4096) // Set duty to 50%. (2 ** 13) * 50% = 4096
#define LEDC_FREQUENCY (100) // Frequency in Hertz. Set frequency at 4 kHz
/* A sample structure to pass events from the PCNT
* interrupt handler to the main program.
*/
typedef struct
{
int unit; // the PCNT unit that originated an interrupt
uint32_t status; // information on the event type that caused the interrupt
} pcnt_evt_t;
/* Decode what PCNT's unit originated an interrupt
* and pass this information together with the event type
* the main program using a queue.
*/
bool pcnt_on_reach(pcnt_unit_handle_t unit, const pcnt_watch_event_data_t *edata, void *user_ctx)
{
BaseType_t high_task_wakeup;
QueueHandle_t queue = (QueueHandle_t)user_ctx;
xQueueSendFromISR(queue, &(edata->watch_point_value), &high_task_wakeup);
return (high_task_wakeup == pdTRUE);
};
/* Configure LED PWM Controller
* to output sample pulses at 1 Hz with duty of about 10%
*/
static void example_ledc_init(void)
{
// Prepare and then apply the LEDC PWM timer configuration
ledc_timer_config_t ledc_timer = {
.speed_mode = LEDC_MODE,
.timer_num = LEDC_TIMER,
.duty_resolution = LEDC_DUTY_RES,
.freq_hz = LEDC_FREQUENCY, // Set output frequency at 4 kHz
.clk_cfg = LEDC_AUTO_CLK};
ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
// Prepare and then apply the LEDC PWM channel configuration
ledc_channel_config_t ledc_channel = {
.speed_mode = LEDC_MODE,
.channel = LEDC_CHANNEL,
.timer_sel = LEDC_TIMER,
.intr_type = LEDC_INTR_DISABLE,
.gpio_num = LEDC_OUTPUT_IO,
.duty = 0, // Set duty to 0%
.hpoint = 0};
ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel));
}
void app_main(void)
{
ESP_LOGI(TAG, "install pcnt unit");
pcnt_unit_config_t unit_config;
unit_config.high_limit = EXAMPLE_PCNT_HIGH_LIMIT;
unit_config.low_limit = EXAMPLE_PCNT_LOW_LIMIT;
unit_config.intr_priority = 0;
unit_config.flags.accum_count = 1;
pcnt_unit_handle_t pcnt_unit = NULL;
ESP_ERROR_CHECK(pcnt_new_unit(&unit_config, &pcnt_unit));
ESP_LOGI(TAG, "set glitch filter");
pcnt_glitch_filter_config_t filter_config;
filter_config.max_glitch_ns = 1000;
ESP_ERROR_CHECK(pcnt_unit_set_glitch_filter(pcnt_unit, &filter_config));
ESP_LOGI(TAG, "install pcnt channels");
pcnt_chan_config_t chan_a_config;
chan_a_config.edge_gpio_num = EXAMPLE_EC11_GPIO_A;
chan_a_config.level_gpio_num = EXAMPLE_EC11_GPIO_B;
pcnt_channel_handle_t pcnt_chan_a = NULL;
pcnt_channel_handle_t pcnt_chan_b = NULL;
ESP_ERROR_CHECK(pcnt_new_channel(pcnt_unit, &chan_a_config, &pcnt_chan_a));
pcnt_chan_config_t chan_b_config;
chan_b_config.edge_gpio_num = EXAMPLE_EC11_GPIO_B;
chan_b_config.level_gpio_num = EXAMPLE_EC11_GPIO_A;
ESP_ERROR_CHECK(pcnt_new_channel(pcnt_unit, &chan_b_config, &pcnt_chan_b));
ESP_LOGI(TAG, "set edge and level actions for pcnt channels");
ESP_ERROR_CHECK(pcnt_channel_set_edge_action(pcnt_chan_a, PCNT_CHANNEL_EDGE_ACTION_DECREASE, PCNT_CHANNEL_EDGE_ACTION_INCREASE));
ESP_ERROR_CHECK(pcnt_channel_set_level_action(pcnt_chan_a, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE));
ESP_ERROR_CHECK(pcnt_channel_set_edge_action(pcnt_chan_b, PCNT_CHANNEL_EDGE_ACTION_INCREASE, PCNT_CHANNEL_EDGE_ACTION_DECREASE));
ESP_ERROR_CHECK(pcnt_channel_set_level_action(pcnt_chan_b, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE));
ESP_LOGI(TAG, "add watch points and register callbacks");
int watch_points[] = {EXAMPLE_PCNT_LOW_LIMIT, -50, 0, 50, EXAMPLE_PCNT_HIGH_LIMIT};
for (size_t i = 0; i < sizeof(watch_points) / sizeof(watch_points[0]); i++)
{
ESP_ERROR_CHECK(pcnt_unit_add_watch_point(pcnt_unit, watch_points
));
}
pcnt_event_callbacks_t cbs;
cbs.on_reach = pcnt_on_reach;
QueueHandle_t pnct_queue = xQueueCreate(10, sizeof(int));
ESP_ERROR_CHECK(pcnt_unit_register_event_callbacks(pcnt_unit, &cbs, pnct_queue));
ESP_LOGI(TAG, "enable pcnt unit");
ESP_ERROR_CHECK(pcnt_unit_enable(pcnt_unit));
ESP_LOGI(TAG, "clear pcnt unit");
ESP_ERROR_CHECK(pcnt_unit_clear_count(pcnt_unit));
ESP_LOGI(TAG, "start pcnt unit");
ESP_ERROR_CHECK(pcnt_unit_start(pcnt_unit));
int pulse_count = 0;
int event_count = 0;
example_ledc_init();
while (1)
{
if (xQueueReceive(pnct_queue, &event_count, pdMS_TO_TICKS(10)))
{
ESP_LOGI(TAG, "Watch point event, count: %d", event_count);
}
else
{
ESP_ERROR_CHECK(pcnt_unit_get_count(pcnt_unit, &pulse_count));
ESP_LOGI(TAG, "Pulse count: %d", pulse_count);
}
vTaskDelay(10 / portTICK_PERIOD_MS);
};
}
举报
