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Merge branch 'bugfix/gpio_glitch_filter_test' into 'master'

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driver: improve gpio glitch filter test

Closes IDFCI-1621 and IDFCI-1622

See merge request espressif/esp-idf!22477
This commit is contained in:
morris
2023-02-24 18:13:41 +08:00
parent 2f44fa4123 fdac2589bb
commit 8538f16361
1 changed files with 12 additions and 5 deletions
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17
components/driver/test_apps/gpio_extensions/main/test_gpio_filter.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -90,8 +90,11 @@ static void test_gpio_intr_callback(void *args)
NOINLINE_ATTR IRAM_ATTR static void test_gpio_simulate_glitch_pulse(void)
{
// the following code is used to generate a short glitch pulse
// around 10ns @CPU160MHz
// around 20ns @CPU160MHz, 40ns @CPU96MHz
// pull high for 4 CPU cycles, to ensure the short pulse can be sampled by GPIO
asm volatile(
"csrrsi zero, %0, 0x1\n"
"csrrsi zero, %0, 0x1\n"
"csrrsi zero, %0, 0x1\n"
"csrrsi zero, %0, 0x1\n"
"csrrci zero, %0, 0x1"
@@ -101,7 +104,7 @@ NOINLINE_ATTR IRAM_ATTR static void test_gpio_simulate_glitch_pulse(void)
TEST_CASE("GPIO flex glitch filter enable/disable", "[gpio_filter]")
{
const gpio_num_t test_gpio = 0;
const gpio_num_t test_gpio = 2;
printf("initialize GPIO for input and out\r\n");
gpio_config_t gpio_cfg = {
@@ -132,15 +135,19 @@ TEST_CASE("GPIO flex glitch filter enable/disable", "[gpio_filter]")
.window_width_ns = 500,
};
TEST_ESP_OK((gpio_new_flex_glitch_filter(&filter_cfg, &filter)));
TEST_ESP_OK(gpio_glitch_filter_enable(filter));
printf("install gpio interrupt\r\n");
gpio_install_isr_service(0);
SemaphoreHandle_t sem = xSemaphoreCreateBinary();
TEST_ESP_OK(gpio_isr_handler_add(test_gpio, test_gpio_intr_callback, sem));
printf("enable the glitch filter\r\n");
TEST_ESP_OK(gpio_glitch_filter_enable(filter));
printf("generate rising edge glitch signal\r\n");
test_gpio_simulate_glitch_pulse();
for (int i = 0; i < 10; i++) {
test_gpio_simulate_glitch_pulse();
}
// should timeout, because the glitch is filtered out
TEST_ASSERT_EQUAL(pdFALSE, xSemaphoreTake(sem, pdMS_TO_TICKS(1000)));