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adding support for waveshare esp32-C6 and power states #1703

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adding support for waveshare esp32-C6 and power states #1703

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60 changes: 58 additions & 2 deletions src/helpers/ESP32Board.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,10 @@
#include <sys/time.h>
#include <Wire.h>
#include "driver/rtc_io.h"
#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(WAVESHARE_ESP32_C6_LP_BASELINE)
#include "esp_sleep.h"
#include "driver/gpio.h"
#endif

class ESP32Board : public mesh::MainBoard {
protected:
Expand All @@ -20,6 +24,13 @@ class ESP32Board : public mesh::MainBoard {
// for future use, sub-classes SHOULD call this from their begin()
startup_reason = BD_STARTUP_NORMAL;

#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(WAVESHARE_ESP32_C6_LP_BASELINE)
esp_sleep_wakeup_cause_t wakeup = esp_sleep_get_wakeup_cause();
if (wakeup == ESP_SLEEP_WAKEUP_EXT1 || wakeup == ESP_SLEEP_WAKEUP_GPIO) {
startup_reason = BD_STARTUP_RX_PACKET;
}
#endif

#ifdef ESP32_CPU_FREQ
setCpuFrequencyMhz(ESP32_CPU_FREQ);
#endif
Expand Down Expand Up @@ -60,20 +71,65 @@ class ESP32Board : public mesh::MainBoard {
#if defined(CONFIG_IDF_TARGET_ESP32S3) && defined(P_LORA_DIO_1) // Supported ESP32 variants
if (rtc_gpio_is_valid_gpio((gpio_num_t)P_LORA_DIO_1)) { // Only enter sleep mode if P_LORA_DIO_1 is RTC pin
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
esp_sleep_enable_ext1_wakeup((1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH); // To wake up when receiving a LoRa packet
esp_sleep_enable_ext1_wakeup((1ULL << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH); // To wake up when receiving a LoRa packet

if (secs > 0) {
esp_sleep_enable_timer_wakeup(secs * 1000000); // To wake up every hour to do periodically jobs
esp_sleep_enable_timer_wakeup((uint64_t)secs * 1000000ULL); // To wake up every hour to do periodically jobs
}

esp_light_sleep_start(); // CPU enters light sleep
}
#elif defined(CONFIG_IDF_TARGET_ESP32C6) && defined(WAVESHARE_ESP32_C6_LP_BASELINE)
esp_sleep_disable_wakeup_source(ESP_SLEEP_WAKEUP_ALL);

#ifdef P_LORA_DIO_1
// Prefer EXT1 wake on LP/RTC GPIOs (0..7 on C6); fallback to digital GPIO wake.
if (esp_sleep_is_valid_wakeup_gpio((gpio_num_t)P_LORA_DIO_1)) {
esp_sleep_enable_ext1_wakeup((1ULL << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);
} else {
gpio_wakeup_enable((gpio_num_t)P_LORA_DIO_1, GPIO_INTR_HIGH_LEVEL);
esp_sleep_enable_gpio_wakeup(); // Wake up when receiving a LoRa IRQ pulse
}
#endif

if (secs > 0) {
esp_sleep_enable_timer_wakeup((uint64_t)secs * 1000000ULL); // Timer fallback wake
}

esp_light_sleep_start();
#endif
}

void enterDeepSleep(uint32_t secs) {
#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(WAVESHARE_ESP32_C6_LP_BASELINE)
esp_sleep_disable_wakeup_source(ESP_SLEEP_WAKEUP_ALL);

#ifdef P_LORA_DIO_1
// Deep sleep wake on C6 requires LP/RTC-capable GPIOs (0..7).
if (esp_sleep_is_valid_wakeup_gpio((gpio_num_t)P_LORA_DIO_1)) {
esp_sleep_enable_ext1_wakeup((1ULL << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);
}
#endif

if (secs > 0) {
esp_sleep_enable_timer_wakeup((uint64_t)secs * 1000000ULL);
}

esp_deep_sleep_start();
#endif
}

void sleep(uint32_t secs) override {
if (!inhibit_sleep) {
#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(WAVESHARE_ESP32_C6_LP_BASELINE)
#if defined(WAVESHARE_ESP32_C6_USE_DEEP_SLEEP) && (WAVESHARE_ESP32_C6_USE_DEEP_SLEEP == 1)
enterDeepSleep(secs);
#else
enterLightSleep(secs);
#endif
#else
enterLightSleep(secs); // To wake up after "secs" seconds or when receiving a LoRa packet
#endif
}
}

Expand Down