roughed in support for esp32-h2 via Waveshare dev board

src/modules/ExternalNotificationModule.h

@@ -5,7 +5,8 @@
 #include "configuration.h"
 #include "input/InputBroker.h"
 
-#if !defined(ARCH_PORTDUINO) && !defined(ARCH_STM32WL) && !defined(CONFIG_IDF_TARGET_ESP32C6)
+#if !defined(ARCH_PORTDUINO) && !defined(ARCH_STM32WL) && !defined(CONFIG_IDF_TARGET_ESP32C6) &&                                 \
+    !defined(CONFIG_IDF_TARGET_ESP32H2)
 #include <NonBlockingRtttl.h>
 #else
 // Noop class for portduino.

src/modules/SerialModule.cpp

@@ -71,7 +71,7 @@ SerialModule::SerialModule() : StreamAPI(&Serial), concurrency::OSThread("Serial
     api_type = TYPE_SERIAL;
 }
 static Print *serialPrint = &Serial;
-#elif defined(CONFIG_IDF_TARGET_ESP32C6) || defined(RAK3172) || defined(EBYTE_E77_MBL)
+#elif defined(CONFIG_IDF_TARGET_ESP32C6) || defined(RAK3172) || defined(EBYTE_E77_MBL) || defined(CONFIG_IDF_TARGET_ESP32H2)
 SerialModule::SerialModule() : StreamAPI(&Serial1), concurrency::OSThread("Serial")
 {
     api_type = TYPE_SERIAL;
@@ -175,7 +175,7 @@ int32_t SerialModule::runOnce()
                 // Give it a chance to flush out 💩
                 delay(10);
             }
-#if defined(CONFIG_IDF_TARGET_ESP32C6)
+#if defined(CONFIG_IDF_TARGET_ESP32C6) || defined(CONFIG_IDF_TARGET_ESP32H2)
             if (moduleConfig.serial.rxd && moduleConfig.serial.txd) {
                 Serial1.setRxBufferSize(RX_BUFFER);
                 Serial1.begin(baud, SERIAL_8N1, moduleConfig.serial.rxd, moduleConfig.serial.txd);
@@ -277,7 +277,7 @@ int32_t SerialModule::runOnce()
             }
 #endif
             else {
-#if defined(CONFIG_IDF_TARGET_ESP32C6)
+#if defined(CONFIG_IDF_TARGET_ESP32C6) || defined(CONFIG_IDF_TARGET_ESP32H2)
                 while (Serial1.available()) {
                     serialPayloadSize = Serial1.readBytes(serialBytes, meshtastic_Constants_DATA_PAYLOAD_LEN);
 #else
@@ -538,7 +538,7 @@ void SerialModule::processWXSerial()
 {
 #if !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6) &&              \
     !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M5) &&  \
-    !defined(ARCH_STM32WL) && !defined(MUZI_BASE)
+    !defined(ARCH_STM32WL) && !defined(MUZI_BASE) && !defined(CONFIG_IDF_TARGET_ESP32H2)
     static unsigned int lastAveraged = 0;
     static unsigned int averageIntervalMillis = 300000; // 5 minutes hard coded.
     static double dir_sum_sin = 0;

src/platform/esp32/main-esp32.cpp

@@ -169,6 +169,8 @@ void esp32Setup()
 // #define APP_WATCHDOG_SECS 45
 #define APP_WATCHDOG_SECS 90
 
+// esp_task_wdt_init returns an unknown error, so skip it on ESP32H2
+#ifndef CONFIG_IDF_TARGET_ESP32H2
 #ifdef CONFIG_IDF_TARGET_ESP32C6
     esp_task_wdt_config_t *wdt_config = (esp_task_wdt_config_t *)malloc(sizeof(esp_task_wdt_config_t));
     wdt_config->timeout_ms = APP_WATCHDOG_SECS * 1000;
@@ -181,7 +183,7 @@ void esp32Setup()
 #endif
     res = esp_task_wdt_add(NULL);
     assert(res == ESP_OK);
-
+#endif
 #if HAS_32768HZ
     enableSlowCLK();
 #endif
@@ -223,9 +225,10 @@ void cpuDeepSleep(uint32_t msecToWake)
         13,
 #endif
         34, 35, 37};
-
+#ifndef CONFIG_IDF_TARGET_ESP32H2
     for (int i = 0; i < sizeof(rtcGpios); i++)
         rtc_gpio_isolate((gpio_num_t)rtcGpios[i]);
+#endif
 #endif
 
         // FIXME, disable internal rtc pullups/pulldowns on the non isolated pins. for inputs that we aren't using
@@ -258,10 +261,10 @@ void cpuDeepSleep(uint32_t msecToWake)
 
 #endif // #end ESP32S3_WAKE_TYPE
 #endif
-
+#ifdef ESP_PD_DOMAIN_RTC_PERIPH
     // We want RTC peripherals to stay on
     esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
-
+#endif
     esp_sleep_enable_timer_wakeup(msecToWake * 1000ULL); // call expects usecs
     esp_deep_sleep_start();                              // TBD mA sleep current (battery)
 }

src/sleep.cpp

@@ -388,10 +388,10 @@ esp_sleep_wakeup_cause_t doLightSleep(uint64_t sleepMsec) // FIXME, use a more r
     uint64_t sleepUsec = sleepMsec * 1000LL;
 
     // NOTE! ESP docs say we must disable bluetooth and wifi before light sleep
-
+#ifdef ESP_PD_DOMAIN_RTC_PERIPH
     // We want RTC peripherals to stay on
     esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
-
+#endif
 #if defined(BUTTON_PIN) && defined(BUTTON_NEED_PULLUP)
     gpio_pullup_en((gpio_num_t)BUTTON_PIN);
 #endif
@@ -523,6 +523,8 @@ void enableModemSleep()
     esp32_config.max_freq_mhz = CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ;
 #elif CONFIG_IDF_TARGET_ESP32C6
     esp32_config.max_freq_mhz = CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ;
+#elif CONFIG_IDF_TARGET_ESP32H2
+    esp32_config.max_freq_mhz = CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ;
 #elif CONFIG_IDF_TARGET_ESP32C3
     esp32_config.max_freq_mhz = CONFIG_ESP32C3_DEFAULT_CPU_FREQ_MHZ;
 #else