esp-idf/components/esp_pm/pm_trace.c

55 wiersze
1.6 KiB
C

/*
* SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_attr.h"
#include "esp_private/pm_trace.h"
#include "driver/gpio.h"
#include "soc/soc.h"
#include "soc/gpio_reg.h"
/* GPIOs to use for tracing of esp_pm events.
* Two entries in the array for each type, one for each CPU.
* Feel free to change when debugging.
*/
static const int DRAM_ATTR s_trace_io[] = {
#if !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32C2)
BIT(4), BIT(5), // ESP_PM_TRACE_IDLE
BIT(16), BIT(17), // ESP_PM_TRACE_TICK
BIT(18), BIT(18), // ESP_PM_TRACE_FREQ_SWITCH
BIT(19), BIT(19), // ESP_PM_TRACE_CCOMPARE_UPDATE
BIT(25), BIT(26), // ESP_PM_TRACE_ISR_HOOK
BIT(27), BIT(27), // ESP_PM_TRACE_SLEEP
#else
BIT(2), BIT(3), // ESP_PM_TRACE_IDLE
BIT(4), BIT(5), // ESP_PM_TRACE_TICK
BIT(6), BIT(6), // ESP_PM_TRACE_FREQ_SWITCH
BIT(7), BIT(7), // ESP_PM_TRACE_CCOMPARE_UPDATE
BIT(8), BIT(9), // ESP_PM_TRACE_ISR_HOOK
BIT(18), BIT(18), // ESP_PM_TRACE_SLEEP
#endif
};
void esp_pm_trace_init(void)
{
for (size_t i = 0; i < sizeof(s_trace_io) / sizeof(s_trace_io[0]); ++i) {
int io = __builtin_ffs(s_trace_io[i]);
if (io == 0) {
continue;
}
gpio_set_direction(io - 1, GPIO_MODE_OUTPUT);
}
}
void IRAM_ATTR esp_pm_trace_enter(esp_pm_trace_event_t event, int core_id)
{
REG_WRITE(GPIO_OUT_W1TS_REG, s_trace_io[2 * event + core_id]);
}
void IRAM_ATTR esp_pm_trace_exit(esp_pm_trace_event_t event, int core_id)
{
REG_WRITE(GPIO_OUT_W1TC_REG, s_trace_io[2 * event + core_id]);
}