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pcnt: replace isr register with isr service in example

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This commit is contained in:
morris
2020-10-12 14:23:49 +08:00
parent 153e819e8a
commit 906dd0ad84
2 changed files with 39 additions and 59 deletions
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7
components/driver/test/test_pcnt.c
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@@ -14,6 +14,8 @@
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
#include "freertos/queue.h" #include "freertos/queue.h"
#include "soc/soc_caps.h"
#if SOC_PCNT_SUPPORTED
#include "driver/periph_ctrl.h" #include "driver/periph_ctrl.h"
#include "driver/gpio.h" #include "driver/gpio.h"
#include "driver/pcnt.h" #include "driver/pcnt.h"
@@ -21,12 +23,9 @@
#include "esp_attr.h" #include "esp_attr.h"
#include "esp_log.h" #include "esp_log.h"
#include "soc/gpio_periph.h" #include "soc/gpio_periph.h"
#include "soc/soc_caps.h"
#include "unity.h" #include "unity.h"
#include "esp_rom_gpio.h" #include "esp_rom_gpio.h"
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S3)
#define PULSE_IO 21 #define PULSE_IO 21
#define PCNT_INPUT_IO 4 #define PCNT_INPUT_IO 4
#define PCNT_CTRL_VCC_IO 5 #define PCNT_CTRL_VCC_IO 5
@@ -673,4 +672,4 @@ TEST_CASE("PCNT counting mode test", "[pcnt]")
count_mode_test(PCNT_CTRL_GND_IO); count_mode_test(PCNT_CTRL_GND_IO);
} }
#endif #endif // #if SOC_PCNT_SUPPORTED

91
examples/peripherals/pcnt/pulse_count_event/main/pcnt_event_example_main.c
View File

@@ -9,18 +9,16 @@
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. CONDITIONS OF ANY KIND, either express or implied.
*/ */
#include <stdio.h>
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/portmacro.h"
#include "freertos/task.h" #include "freertos/task.h"
#include "freertos/queue.h" #include "freertos/queue.h"
#include "driver/periph_ctrl.h"
#include "driver/ledc.h" #include "driver/ledc.h"
#include "driver/gpio.h"
#include "driver/pcnt.h" #include "driver/pcnt.h"
#include "esp_attr.h" #include "esp_attr.h"
#include "esp_log.h" #include "esp_log.h"
static const char *TAG = "example";
/** /**
* TEST CODE BRIEF * TEST CODE BRIEF
* *
@@ -43,7 +41,6 @@
* - reaches 'l_lim' value or 'h_lim' value, * - reaches 'l_lim' value or 'h_lim' value,
* - will be reset to zero. * - will be reset to zero.
*/ */
#define PCNT_TEST_UNIT PCNT_UNIT_0
#define PCNT_H_LIM_VAL 10 #define PCNT_H_LIM_VAL 10
#define PCNT_L_LIM_VAL -10 #define PCNT_L_LIM_VAL -10
#define PCNT_THRESH1_VAL 5 #define PCNT_THRESH1_VAL 5
@@ -53,7 +50,6 @@
#define LEDC_OUTPUT_IO 18 // Output GPIO of a sample 1 Hz pulse generator #define LEDC_OUTPUT_IO 18 // Output GPIO of a sample 1 Hz pulse generator
xQueueHandle pcnt_evt_queue; // A queue to handle pulse counter events xQueueHandle pcnt_evt_queue; // A queue to handle pulse counter events
pcnt_isr_handle_t user_isr_handle = NULL; //user's ISR service handle
/* A sample structure to pass events from the PCNT /* A sample structure to pass events from the PCNT
* interrupt handler to the main program. * interrupt handler to the main program.
@@ -69,24 +65,13 @@ typedef struct {
*/ */
static void IRAM_ATTR pcnt_example_intr_handler(void *arg) static void IRAM_ATTR pcnt_example_intr_handler(void *arg)
{ {
uint32_t intr_status = PCNT.int_st.val; int pcnt_unit = (int)arg;
int i;
pcnt_evt_t evt; pcnt_evt_t evt;
portBASE_TYPE HPTaskAwoken = pdFALSE; evt.unit = pcnt_unit;
/* Save the PCNT event type that caused an interrupt
for (i = 0; i < PCNT_UNIT_MAX; i++) { to pass it to the main program */
if (intr_status & (BIT(i))) { pcnt_get_event_status(pcnt_unit, &evt.status);
evt.unit = i; xQueueSendFromISR(pcnt_evt_queue, &evt, NULL);
/* Save the PCNT event type that caused an interrupt
to pass it to the main program */
evt.status = PCNT.status_unit[i].val;
PCNT.int_clr.val = BIT(i);
xQueueSendFromISR(pcnt_evt_queue, &evt, &HPTaskAwoken);
if (HPTaskAwoken == pdTRUE) {
portYIELD_FROM_ISR();
}
}
}
} }
/* Configure LED PWM Controller /* Configure LED PWM Controller
@@ -120,7 +105,7 @@ static void ledc_init(void)
* - set up the input filter * - set up the input filter
* - set up the counter events to watch * - set up the counter events to watch
*/ */
static void pcnt_example_init(void) static void pcnt_example_init(int unit)
{ {
/* Prepare configuration for the PCNT unit */ /* Prepare configuration for the PCNT unit */
pcnt_config_t pcnt_config = { pcnt_config_t pcnt_config = {
@@ -128,7 +113,7 @@ static void pcnt_example_init(void)
.pulse_gpio_num = PCNT_INPUT_SIG_IO, .pulse_gpio_num = PCNT_INPUT_SIG_IO,
.ctrl_gpio_num = PCNT_INPUT_CTRL_IO, .ctrl_gpio_num = PCNT_INPUT_CTRL_IO,
.channel = PCNT_CHANNEL_0, .channel = PCNT_CHANNEL_0,
.unit = PCNT_TEST_UNIT, .unit = unit,
// What to do on the positive / negative edge of pulse input? // What to do on the positive / negative edge of pulse input?
.pos_mode = PCNT_COUNT_INC, // Count up on the positive edge .pos_mode = PCNT_COUNT_INC, // Count up on the positive edge
.neg_mode = PCNT_COUNT_DIS, // Keep the counter value on the negative edge .neg_mode = PCNT_COUNT_DIS, // Keep the counter value on the negative edge
@@ -143,39 +128,40 @@ static void pcnt_example_init(void)
pcnt_unit_config(&pcnt_config); pcnt_unit_config(&pcnt_config);
/* Configure and enable the input filter */ /* Configure and enable the input filter */
pcnt_set_filter_value(PCNT_TEST_UNIT, 100); pcnt_set_filter_value(unit, 100);
pcnt_filter_enable(PCNT_TEST_UNIT); pcnt_filter_enable(unit);
/* Set threshold 0 and 1 values and enable events to watch */ /* Set threshold 0 and 1 values and enable events to watch */
pcnt_set_event_value(PCNT_TEST_UNIT, PCNT_EVT_THRES_1, PCNT_THRESH1_VAL); pcnt_set_event_value(unit, PCNT_EVT_THRES_1, PCNT_THRESH1_VAL);
pcnt_event_enable(PCNT_TEST_UNIT, PCNT_EVT_THRES_1); pcnt_event_enable(unit, PCNT_EVT_THRES_1);
pcnt_set_event_value(PCNT_TEST_UNIT, PCNT_EVT_THRES_0, PCNT_THRESH0_VAL); pcnt_set_event_value(unit, PCNT_EVT_THRES_0, PCNT_THRESH0_VAL);
pcnt_event_enable(PCNT_TEST_UNIT, PCNT_EVT_THRES_0); pcnt_event_enable(unit, PCNT_EVT_THRES_0);
/* Enable events on zero, maximum and minimum limit values */ /* Enable events on zero, maximum and minimum limit values */
pcnt_event_enable(PCNT_TEST_UNIT, PCNT_EVT_ZERO); pcnt_event_enable(unit, PCNT_EVT_ZERO);
pcnt_event_enable(PCNT_TEST_UNIT, PCNT_EVT_H_LIM); pcnt_event_enable(unit, PCNT_EVT_H_LIM);
pcnt_event_enable(PCNT_TEST_UNIT, PCNT_EVT_L_LIM); pcnt_event_enable(unit, PCNT_EVT_L_LIM);
/* Initialize PCNT's counter */ /* Initialize PCNT's counter */
pcnt_counter_pause(PCNT_TEST_UNIT); pcnt_counter_pause(unit);
pcnt_counter_clear(PCNT_TEST_UNIT); pcnt_counter_clear(unit);
/* Register ISR handler and enable interrupts for PCNT unit */ /* Install interrupt service and add isr callback handler */
pcnt_isr_register(pcnt_example_intr_handler, NULL, 0, &user_isr_handle); pcnt_isr_service_install(0);
pcnt_intr_enable(PCNT_TEST_UNIT); pcnt_isr_handler_add(unit, pcnt_example_intr_handler, (void *)unit);
/* Everything is set up, now go to counting */ /* Everything is set up, now go to counting */
pcnt_counter_resume(PCNT_TEST_UNIT); pcnt_counter_resume(unit);
} }
void app_main(void) void app_main(void)
{ {
int pcnt_unit = PCNT_UNIT_0;
/* Initialize LEDC to generate sample pulse signal */ /* Initialize LEDC to generate sample pulse signal */
ledc_init(); ledc_init();
/* Initialize PCNT event queue and PCNT functions */ /* Initialize PCNT event queue and PCNT functions */
pcnt_evt_queue = xQueueCreate(10, sizeof(pcnt_evt_t)); pcnt_evt_queue = xQueueCreate(10, sizeof(pcnt_evt_t));
pcnt_example_init(); pcnt_example_init(pcnt_unit);
int16_t count = 0; int16_t count = 0;
pcnt_evt_t evt; pcnt_evt_t evt;
@@ -186,31 +172,26 @@ void app_main(void)
*/ */
res = xQueueReceive(pcnt_evt_queue, &evt, 1000 / portTICK_PERIOD_MS); res = xQueueReceive(pcnt_evt_queue, &evt, 1000 / portTICK_PERIOD_MS);
if (res == pdTRUE) { if (res == pdTRUE) {
pcnt_get_counter_value(PCNT_TEST_UNIT, &count); pcnt_get_counter_value(pcnt_unit, &count);
printf("Event PCNT unit[%d]; cnt: %d\n", evt.unit, count); ESP_LOGI(TAG, "Event PCNT unit[%d]; cnt: %d", evt.unit, count);
if (evt.status & PCNT_EVT_THRES_1) { if (evt.status & PCNT_EVT_THRES_1) {
printf("THRES1 EVT\n"); ESP_LOGI(TAG, "THRES1 EVT");
} }
if (evt.status & PCNT_EVT_THRES_0) { if (evt.status & PCNT_EVT_THRES_0) {
printf("THRES0 EVT\n"); ESP_LOGI(TAG, "THRES0 EVT");
} }
if (evt.status & PCNT_EVT_L_LIM) { if (evt.status & PCNT_EVT_L_LIM) {
printf("L_LIM EVT\n"); ESP_LOGI(TAG, "L_LIM EVT");
} }
if (evt.status & PCNT_EVT_H_LIM) { if (evt.status & PCNT_EVT_H_LIM) {
printf("H_LIM EVT\n"); ESP_LOGI(TAG, "H_LIM EVT");
} }
if (evt.status & PCNT_EVT_ZERO) { if (evt.status & PCNT_EVT_ZERO) {
printf("ZERO EVT\n"); ESP_LOGI(TAG, "ZERO EVT");
} }
} else { } else {
pcnt_get_counter_value(PCNT_TEST_UNIT, &count); pcnt_get_counter_value(pcnt_unit, &count);
printf("Current counter value :%d\n", count); ESP_LOGI(TAG, "Current counter value :%d", count);
} }
} }
if(user_isr_handle) {
//Free the ISR service handle.
esp_intr_free(user_isr_handle);
user_isr_handle = NULL;
}
} }