fix(i2s): fixed i2s_std initializer order for cpp compiler

Closes espressif#15405

Author: L-KAYA

components/esp_driver_i2s/include/driver/i2s_pdm.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */

components/esp_driver_i2s/include/driver/i2s_std.h

@@ -215,8 +215,8 @@ extern "C" {
 #define I2S_STD_CLK_DEFAULT_CONFIG(rate) { \
     .sample_rate_hz = rate, \
     .clk_src = I2S_CLK_SRC_DEFAULT, \
-    .mclk_multiple = I2S_MCLK_MULTIPLE_256, \
     .ext_clk_freq_hz = 0, \
+    .mclk_multiple = I2S_MCLK_MULTIPLE_256, \
 }
 #endif
 

tools/test_apps/system/cxx_build_test/main/CMakeLists.txt

@@ -7,11 +7,15 @@ if(CONFIG_SOC_I2C_SUPPORTED)
     list(APPEND srcs test_i2c_lcd.cpp)
 endif()
 
+if(CONFIG_SOC_I2S_SUPPORTED)
+    list(APPEND srcs test_i2s.cpp)
+endif()
+
 if(CONFIG_SOC_TWAI_SUPPORTED)
     list(APPEND srcs test_twai.cpp)
 endif()
 
 idf_component_register(SRCS "${srcs}"
                        INCLUDE_DIRS "."
-                       PRIV_REQUIRES driver esp_lcd
+                       PRIV_REQUIRES driver esp_lcd esp_driver_i2s
                        REQUIRES soc)

tools/test_apps/system/cxx_build_test/main/test_i2s.cpp

@@ -0,0 +1,58 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "soc/soc_caps.h"
+#include "driver/i2s_std.h"
+#if SOC_I2S_SUPPORTS_TDM
+#include "driver/i2s_tdm.h"
+#endif
+#if SOC_I2S_SUPPORTS_PDM
+#include "driver/i2s_pdm.h"
+#endif
+
+/**
+ * Check that C-style designated initializers are valid in C++ file.
+ */
+void test_i2s_initializers(void)
+{
+    i2s_std_clk_config_t  std_clk_cfg = I2S_STD_CLK_DEFAULT_CONFIG(16000);
+    i2s_std_slot_config_t std_philips_slot_cfg = I2S_STD_PHILIPS_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    i2s_std_slot_config_t std_msb_slot_cfg = I2S_STD_MSB_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    i2s_std_slot_config_t std_pcm_slot_cfg = I2S_STD_PCM_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    (void) std_clk_cfg;
+    (void) std_philips_slot_cfg;
+    (void) std_msb_slot_cfg;
+    (void) std_pcm_slot_cfg;
+#if SOC_I2S_SUPPORTS_TDM
+    i2s_tdm_clk_config_t  tdm_clk_cfg = I2S_TDM_CLK_DEFAULT_CONFIG(16000);
+    i2s_tdm_slot_config_t tdm_philips_slot_cfg = I2S_TDM_PHILIPS_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO, (i2s_tdm_slot_mask_t)0x03);
+    i2s_tdm_slot_config_t tdm_msb_slot_cfg = I2S_TDM_MSB_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO, (i2s_tdm_slot_mask_t)0x03);
+    i2s_tdm_slot_config_t tdm_pcm_s_slot_cfg = I2S_TDM_PCM_SHORT_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO, (i2s_tdm_slot_mask_t)0x03);
+    i2s_tdm_slot_config_t tdm_pcm_l_slot_cfg = I2S_TDM_PCM_LONG_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO, (i2s_tdm_slot_mask_t)0x03);
+    (void) tdm_clk_cfg;
+    (void) tdm_philips_slot_cfg;
+    (void) tdm_msb_slot_cfg;
+    (void) tdm_pcm_s_slot_cfg;
+    (void) tdm_pcm_l_slot_cfg;
+#endif
+#if SOC_I2S_SUPPORTS_PDM_RX
+    i2s_pdm_rx_clk_config_t pdm_rx_clk_cfg = I2S_PDM_RX_CLK_DEFAULT_CONFIG(16000);
+    i2s_pdm_rx_slot_config_t pdm_rx_pcm_slot_cfg = I2S_PDM_RX_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    (void) pdm_rx_clk_cfg;
+    (void) pdm_rx_pcm_slot_cfg;
+#endif
+#if SOC_I2S_SUPPORTS_PDM_TX
+    i2s_pdm_tx_clk_config_t pdm_tx_clk_cfg = I2S_PDM_TX_CLK_DEFAULT_CONFIG(16000);
+    i2s_pdm_tx_clk_config_t pdm_tx_dac_clk_cfg = I2S_PDM_TX_CLK_DAC_DEFAULT_CONFIG(16000);
+    i2s_pdm_tx_slot_config_t pdm_tx_pcm_slot_cfg = I2S_PDM_TX_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    (void) pdm_tx_clk_cfg;
+    (void) pdm_tx_dac_clk_cfg;
+    (void) pdm_tx_pcm_slot_cfg;
+#if SOC_I2S_HW_VERSION_2
+    i2s_pdm_tx_slot_config_t pdm_tx_pcm_dac_slot_cfg = I2S_PDM_TX_SLOT_DAC_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO);
+    (void) pdm_tx_pcm_dac_slot_cfg;
+#endif
+#endif
+}