Forward port changes from v0.6 release branch

Merge fixes and initial ESP32-P4 support from release-0.6 into main branch.

.github/workflows/esp32-mkimage.yaml

@@ -45,7 +45,7 @@ jobs:
         elixir_version: ["1.17"]
         rebar3_version: ["3.24.0"]
         compiler_pkgs: ["clang-14"]
-        soc: ["esp32", "esp32c2", "esp32c3", "esp32s2", "esp32s3", "esp32c6", "esp32h2"]
+        soc: ["esp32", "esp32c2", "esp32c3", "esp32s2", "esp32s3", "esp32c6", "esp32h2", "esp32p4"]
         flavor: ["", "-elixir"]
 
     env:

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added the ability to run beams from the CLI for Generic Unix platform (it was already possible with nodejs and emscripten).
 - Added support for 'erlang:--/2'.
+- Added preliminary support for ESP32P4 (no networking support yet).
 
 ### Fixed
 
@@ -47,6 +48,7 @@ certain VM instructions are used.
 - Fixed a race condition affecting multi-core MCUs where a timeout would not be properly cleared
 - Fixed a double free when esp32 uart driver was closed, yielding an assert abort
 - Fixed compilation with latest debian gcc-arm-none-eabi
+- Fix `network:stop/0` on ESP32 so the network can be started again
 
 ## [0.6.5] - 2024-10-15
 

libs/estdlib/src/erlang.erl

@@ -267,6 +267,7 @@ process_info(_Pid, _Key) ->
 %%      <li><b>esp32_free_heap_size</b> the number of (noncontiguous) free bytes in the ESP32 heap (integer)</li>
 %%      <li><b>esp32_largest_free_block</b> the number of the largest contiguous free bytes in the ESP32 heap (integer)</li>
 %%      <li><b>esp32_minimum_free_size</b> the smallest number of free bytes in the ESP32 heap since boot (integer)</li>
+%%      <li><b>esp32_chip_info</b> Details about the model and capabilities of the ESP32 device (map)</li>
 %% </ul>
 %%
 %% Additional keys may be supported on some platforms that are not documented here.

src/platforms/esp32/components/avm_builtins/network_driver.c

@@ -814,6 +814,9 @@ static void stop_network(Context *ctx)
 {
     // Stop unregister event callbacks so they dont trigger during shutdown.
     esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler);
+    esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler);
+    esp_event_handler_unregister(IP_EVENT, IP_EVENT_AP_STAIPASSIGNED, &event_handler);
+    esp_event_handler_unregister(sntp_event_base, SNTP_EVENT_BASE_SYNC, &event_handler);
 
     esp_netif_t *sta_wifi_interface = esp_netif_get_handle_from_ifkey("WIFI_STA_DEF");
     esp_netif_t *ap_wifi_interface = esp_netif_get_handle_from_ifkey("WIFI_AP_DEF");
@@ -833,12 +836,6 @@ static void stop_network(Context *ctx)
     // Stop sntp (ignore OK, or not configured error)
     esp_sntp_stop();
 
-    // Delete network event loop
-    esp_err_t err = esp_event_loop_delete_default();
-    if (err != ESP_OK) {
-        ESP_LOGE(TAG, "Invalid state error while deleting event loop, continuing network shutdown...");
-    }
-
     // Destroy existing netif interfaces
     if (ap_wifi_interface != NULL) {
         esp_netif_destroy_default_wifi(ap_wifi_interface);

src/platforms/esp32/components/avm_sys/sys.c

@@ -87,9 +87,12 @@ static const char *const esp32_c2_atom = "\x8" "esp32_c2";
 static const char *const esp32_c3_atom = "\x8" "esp32_c3";
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 1, 0)
 static const char *const esp32_c6_atom = "\x8" "esp32_c6";
-#endif
 static const char *const esp32_h2_atom = "\x8" "esp32_h2";
 #endif
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
+static const char *const esp32_p4_atom = "\x8" "esp32_p4";
+#endif
+#endif
 static const char *const emb_flash_atom = "\x9" "emb_flash";
 static const char *const bgn_atom = "\x3" "bgn";
 static const char *const ble_atom = "\x3" "ble";
@@ -457,9 +460,13 @@ static term get_model(Context *ctx, esp_chip_model_t model)
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 1, 0)
         case CHIP_ESP32C6:
             return globalcontext_make_atom(ctx->global, esp32_c6_atom);
-#endif
         case CHIP_ESP32H2:
             return globalcontext_make_atom(ctx->global, esp32_h2_atom);
+#endif
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
+        case CHIP_ESP32P4:
+            return globalcontext_make_atom(ctx->global, esp32_p4_atom);
+#endif
         default:
             return UNDEFINED_ATOM;
     }

src/platforms/esp32/test/main/test_erl_sources/test_wifi_example.erl

@@ -25,6 +25,8 @@
 start() ->
     case verify_platform(atomvm:platform()) of
         ok ->
+            ok = start_network(),
+            ok = network:stop(),
             start_network(),
             loop(0);
         Error ->

src/platforms/stm32/src/lib/stm_sys.h

@@ -82,5 +82,7 @@ void sys_enable_flash_cache(void);
 void *_sbrk_r(struct _reent *, ptrdiff_t);
 // This function may be defined to relocate the heap.
 void local_heap_setup(uint8_t **start, uint8_t **end);
+void sys_enable_core_periph_clocks();
+bool sys_lock_pin(GlobalContext *glb, uint32_t gpio_bank, uint16_t pin_num);
 
 #endif /* _STM_SYS_H_ */