esp32/esp32_ulp: Fix ULP (FSM) support for S2 and S3.

This change enables the ULP (FSM) for all ESP32 variants rather than
requiring it to be enabled for each board specifically.

It also ensures the correct header file is included for each variant.

Lastly, it updates the IDF version we're builing against to v4.4.2, as that
version contains important fixes to make the ULP actually work on S2/S3
chips. See: https://github.com/espressif/esp-idf/commit/a0e3d48

Signed-off-by: Wilko Nienhaus <wilko.nienhaus@gmail.com>

ports/esp32/boards/sdkconfig.base

@@ -50,6 +50,10 @@ CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
 # ULP coprocessor support
 CONFIG_ESP32_ULP_COPROC_ENABLED=y
 CONFIG_ESP32_ULP_COPROC_RESERVE_MEM=2040
+CONFIG_ESP32S2_ULP_COPROC_ENABLED=y
+CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM=2040
+CONFIG_ESP32S3_ULP_COPROC_ENABLED=y
+CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM=2040
 
 # For cmake build
 CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y

ports/esp32/esp32_ulp.c

@@ -26,10 +26,15 @@
 
 #include "py/runtime.h"
 
-
 #if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
 
+#if CONFIG_IDF_TARGET_ESP32
 #include "esp32/ulp.h"
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/ulp.h"
+#elif CONFIG_IDF_TARGET_ESP32S3
+#include "esp32s3/ulp.h"
+#endif
 #include "esp_err.h"
 
 typedef struct _esp32_ulp_obj_t {
@@ -106,4 +111,4 @@ MP_DEFINE_CONST_OBJ_TYPE(
     locals_dict, &esp32_ulp_locals_dict
     );
 
-#endif // CONFIG_IDF_TARGET_ESP32
+#endif // CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3

tools/ci.sh

@@ -141,7 +141,7 @@ function ci_esp32_idf402_setup {
 }
 
 function ci_esp32_idf44_setup {
-    ci_esp32_setup_helper v4.4
+    ci_esp32_setup_helper v4.4.2
 }
 
 function ci_esp32_build {