feat(esp_rom): Adds esp_rom_vprintf with the same capabilities as esp_rom_print

components/esp_rom/esp32s2/Kconfig.soc_caps.in

@@ -54,3 +54,15 @@ config ESP_ROM_USB_SERIAL_DEVICE_NUM
 config ESP_ROM_SUPPORT_DEEP_SLEEP_WAKEUP_STUB
     bool
     default y
+
+config ESP_ROM_HAS_VPRINTF_FUNC
+    bool
+    default y
+
+config ESP_ROM_HAS_OUTPUT_TO_CHANNELS_FUNC
+    bool
+    default y
+
+config ESP_ROM_HAS_OUTPUT_PUTC_FUNC
+    bool
+    default y

components/esp_rom/esp32s2/esp_rom_caps.h

@@ -19,3 +19,6 @@
 #define ESP_ROM_HAS_SW_FLOAT            (1) // ROM has libgcc software floating point emulation functions
 #define ESP_ROM_USB_SERIAL_DEVICE_NUM       (-1) // No USB_SERIAL_JTAG in the ROM, set -1 for Kconfig usage.
 #define ESP_ROM_SUPPORT_DEEP_SLEEP_WAKEUP_STUB  (1) // ROM supports the HP core to jump to the RTC memory to execute stub code after waking up from deepsleep.
+#define ESP_ROM_HAS_VPRINTF_FUNC            (1) // ROM has ets_vprintf
+#define ESP_ROM_HAS_OUTPUT_TO_CHANNELS_FUNC (1) // ROM has ets_write_char, alias is esp_rom_output_to_channels
+#define ESP_ROM_HAS_OUTPUT_PUTC_FUNC        (1) // ROM has esp_rom_output_putc (or ets_write_char_uart)

components/esp_rom/esp32s2/ld/esp32s2.rom.api.ld

@@ -49,6 +49,7 @@ PROVIDE ( esp_rom_software_reset_system = software_reset );
 PROVIDE ( esp_rom_software_reset_cpu    = software_reset_cpu );
 
 PROVIDE ( esp_rom_printf   = ets_printf );
+PROVIDE ( esp_rom_output_to_channels = ets_write_char );
 PROVIDE ( esp_rom_delay_us = ets_delay_us );
 PROVIDE ( esp_rom_install_uart_printf = ets_install_uart_printf );
 PROVIDE ( esp_rom_get_reset_reason = rtc_get_reset_reason );