Support for ESP32-C2 & ESP32-C6 (#4377)

Co-authored-by: Stijn Tintel <stijn@linux-ipv6.be>

esphome/components/adc/__init__.py

@@ -7,7 +7,9 @@ from esphome.core import CORE
 from esphome.components.esp32 import get_esp32_variant
 from esphome.components.esp32.const import (
     VARIANT_ESP32,
+    VARIANT_ESP32C2,
     VARIANT_ESP32C3,
+    VARIANT_ESP32C6,
     VARIANT_ESP32H2,
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
@@ -70,6 +72,22 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
         3: adc1_channel_t.ADC1_CHANNEL_3,
         4: adc1_channel_t.ADC1_CHANNEL_4,
     },
+    VARIANT_ESP32C2: {
+        0: adc1_channel_t.ADC1_CHANNEL_0,
+        1: adc1_channel_t.ADC1_CHANNEL_1,
+        2: adc1_channel_t.ADC1_CHANNEL_2,
+        3: adc1_channel_t.ADC1_CHANNEL_3,
+        4: adc1_channel_t.ADC1_CHANNEL_4,
+    },
+    VARIANT_ESP32C6: {
+        0: adc1_channel_t.ADC1_CHANNEL_0,
+        1: adc1_channel_t.ADC1_CHANNEL_1,
+        2: adc1_channel_t.ADC1_CHANNEL_2,
+        3: adc1_channel_t.ADC1_CHANNEL_3,
+        4: adc1_channel_t.ADC1_CHANNEL_4,
+        5: adc1_channel_t.ADC1_CHANNEL_5,
+        6: adc1_channel_t.ADC1_CHANNEL_6,
+    },
     VARIANT_ESP32H2: {
         0: adc1_channel_t.ADC1_CHANNEL_0,
         1: adc1_channel_t.ADC1_CHANNEL_1,

esphome/components/deep_sleep/__init__.py

@@ -22,6 +22,8 @@ from esphome.components.esp32.const import (
     VARIANT_ESP32C3,
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
+    VARIANT_ESP32C2,
+    VARIANT_ESP32C6,
 )
 
 WAKEUP_PINS = {
@@ -94,6 +96,8 @@ WAKEUP_PINS = {
         20,
         21,
     ],
+    VARIANT_ESP32C2: [0, 1, 2, 3, 4, 5],
+    VARIANT_ESP32C6: [0, 1, 2, 3, 4, 5, 6, 7],
 }
 
 

esphome/components/esp32/__init__.py

@@ -44,7 +44,6 @@ from .const import (  # noqa
     KEY_SDKCONFIG_OPTIONS,
     KEY_SUBMODULES,
     KEY_VARIANT,
-    VARIANT_ESP32C3,
     VARIANT_FRIENDLY,
     VARIANTS,
 )

esphome/components/esp32/const.py

@@ -14,13 +14,17 @@ KEY_SUBMODULES = "submodules"
 VARIANT_ESP32 = "ESP32"
 VARIANT_ESP32S2 = "ESP32S2"
 VARIANT_ESP32S3 = "ESP32S3"
+VARIANT_ESP32C2 = "ESP32C2"
 VARIANT_ESP32C3 = "ESP32C3"
+VARIANT_ESP32C6 = "ESP32C6"
 VARIANT_ESP32H2 = "ESP32H2"
 VARIANTS = [
     VARIANT_ESP32,
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
+    VARIANT_ESP32C2,
     VARIANT_ESP32C3,
+    VARIANT_ESP32C6,
     VARIANT_ESP32H2,
 ]
 
@@ -28,7 +32,9 @@ VARIANT_FRIENDLY = {
     VARIANT_ESP32: "ESP32",
     VARIANT_ESP32S2: "ESP32-S2",
     VARIANT_ESP32S3: "ESP32-S3",
+    VARIANT_ESP32C2: "ESP32-C2",
     VARIANT_ESP32C3: "ESP32-C3",
+    VARIANT_ESP32C6: "ESP32-C6",
     VARIANT_ESP32H2: "ESP32-H2",
 }
 

esphome/components/esp32/gpio.py

@@ -26,6 +26,8 @@ from .const import (
     VARIANT_ESP32C3,
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
+    VARIANT_ESP32C2,
+    VARIANT_ESP32C6,
     VARIANT_ESP32H2,
     esp32_ns,
 )
@@ -35,6 +37,8 @@ from .gpio_esp32 import esp32_validate_gpio_pin, esp32_validate_supports
 from .gpio_esp32_s2 import esp32_s2_validate_gpio_pin, esp32_s2_validate_supports
 from .gpio_esp32_c3 import esp32_c3_validate_gpio_pin, esp32_c3_validate_supports
 from .gpio_esp32_s3 import esp32_s3_validate_gpio_pin, esp32_s3_validate_supports
+from .gpio_esp32_c2 import esp32_c2_validate_gpio_pin, esp32_c2_validate_supports
+from .gpio_esp32_c6 import esp32_c6_validate_gpio_pin, esp32_c6_validate_supports
 from .gpio_esp32_h2 import esp32_h2_validate_gpio_pin, esp32_h2_validate_supports
 
 
@@ -95,6 +99,14 @@ _esp32_validations = {
         pin_validation=esp32_s3_validate_gpio_pin,
         usage_validation=esp32_s3_validate_supports,
     ),
+    VARIANT_ESP32C2: ESP32ValidationFunctions(
+        pin_validation=esp32_c2_validate_gpio_pin,
+        usage_validation=esp32_c2_validate_supports,
+    ),
+    VARIANT_ESP32C6: ESP32ValidationFunctions(
+        pin_validation=esp32_c6_validate_gpio_pin,
+        usage_validation=esp32_c6_validate_supports,
+    ),
     VARIANT_ESP32H2: ESP32ValidationFunctions(
         pin_validation=esp32_h2_validate_gpio_pin,
         usage_validation=esp32_h2_validate_supports,

esphome/components/esp32/gpio_esp32_c2.py

@@ -0,0 +1,37 @@
+import logging
+
+from esphome.const import CONF_INPUT, CONF_MODE, CONF_NUMBER
+
+import esphome.config_validation as cv
+
+_ESP32C2_STRAPPING_PINS = {8, 9}
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def esp32_c2_validate_gpio_pin(value):
+    if value < 0 or value > 20:
+        raise cv.Invalid(f"Invalid pin number: {value} (must be 0-20)")
+    if value in _ESP32C2_STRAPPING_PINS:
+        _LOGGER.warning(
+            "GPIO%d is a Strapping PIN and should be avoided.\n"
+            "Attaching external pullup/down resistors to strapping pins can cause unexpected failures.\n"
+            "See https://esphome.io/guides/faq.html#why-am-i-getting-a-warning-about-strapping-pins",
+            value,
+        )
+
+    return value
+
+
+def esp32_c2_validate_supports(value):
+    num = value[CONF_NUMBER]
+    mode = value[CONF_MODE]
+    is_input = mode[CONF_INPUT]
+
+    if num < 0 or num > 20:
+        raise cv.Invalid(f"Invalid pin number: {value} (must be 0-20)")
+
+    if is_input:
+        # All ESP32 pins support input mode
+        pass
+    return value

esphome/components/esp32/gpio_esp32_c6.py

@@ -0,0 +1,50 @@
+import logging
+
+from esphome.const import CONF_INPUT, CONF_MODE, CONF_NUMBER
+
+import esphome.config_validation as cv
+
+_ESP32C6_SPI_PSRAM_PINS = {
+    24: "SPICS0",
+    25: "SPIQ",
+    26: "SPIWP",
+    27: "VDD_SPI",
+    28: "SPIHD",
+    29: "SPICLK",
+    30: "SPID",
+}
+
+_ESP32C6_STRAPPING_PINS = {8, 9, 15}
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def esp32_c6_validate_gpio_pin(value):
+    if value < 0 or value > 23:
+        raise cv.Invalid(f"Invalid pin number: {value} (must be 0-23)")
+    if value in _ESP32C6_SPI_PSRAM_PINS:
+        raise cv.Invalid(
+            f"This pin cannot be used on ESP32-C6s and is already used by the SPI/PSRAM interface (function: {_ESP32C6_SPI_PSRAM_PINS[value]})"
+        )
+    if value in _ESP32C6_STRAPPING_PINS:
+        _LOGGER.warning(
+            "GPIO%d is a Strapping PIN and should be avoided.\n"
+            "Attaching external pullup/down resistors to strapping pins can cause unexpected failures.\n"
+            "See https://esphome.io/guides/faq.html#why-am-i-getting-a-warning-about-strapping-pins",
+            value,
+        )
+
+    return value
+
+
+def esp32_c6_validate_supports(value):
+    num = value[CONF_NUMBER]
+    mode = value[CONF_MODE]
+    is_input = mode[CONF_INPUT]
+
+    if num < 0 or num > 23:
+        raise cv.Invalid(f"Invalid pin number: {value} (must be 0-23)")
+    if is_input:
+        # All ESP32 pins support input mode
+        pass
+    return value

esphome/components/esp32_rmt_led_strip/light.py

@@ -63,6 +63,7 @@ RMT_CHANNELS = {
     esp32.const.VARIANT_ESP32S2: [0, 1, 2, 3],
     esp32.const.VARIANT_ESP32S3: [0, 1, 2, 3],
     esp32.const.VARIANT_ESP32C3: [0, 1],
+    esp32.const.VARIANT_ESP32C6: [0, 1],
 }
 
 

esphome/components/logger/__init__.py

@@ -28,6 +28,8 @@ from esphome.components.esp32.const import (
     VARIANT_ESP32S2,
     VARIANT_ESP32C3,
     VARIANT_ESP32S3,
+    VARIANT_ESP32C2,
+    VARIANT_ESP32C6,
 )
 
 CODEOWNERS = ["@esphome/core"]
@@ -74,6 +76,8 @@ UART_SELECTION_ESP32 = {
     VARIANT_ESP32S2: [UART0, UART1, USB_CDC],
     VARIANT_ESP32S3: [UART0, UART1, USB_CDC, USB_SERIAL_JTAG],
     VARIANT_ESP32C3: [UART0, UART1, USB_SERIAL_JTAG],
+    VARIANT_ESP32C2: [UART0, UART1],
+    VARIANT_ESP32C6: [UART0, UART1, USB_CDC, USB_SERIAL_JTAG],
 }
 
 UART_SELECTION_ESP8266 = [UART0, UART0_SWAP, UART1]

esphome/components/logger/logger.cpp

@@ -120,7 +120,7 @@ void HOT Logger::log_message_(int level, const char *tag, int offset) {
     if (
 #if defined(USE_ESP32_VARIANT_ESP32S2)
         uart_ == UART_SELECTION_USB_CDC
-#elif defined(USE_ESP32_VARIANT_ESP32C3)
+#elif defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6)
         uart_ == UART_SELECTION_USB_SERIAL_JTAG
 #elif defined(USE_ESP32_VARIANT_ESP32S3)
         uart_ == UART_SELECTION_USB_CDC || uart_ == UART_SELECTION_USB_SERIAL_JTAG
@@ -191,8 +191,8 @@ void Logger::pre_setup() {
         Serial1.setDebugOutput(ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE);
 #endif
         break;
-#if defined(USE_ESP32) && !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32S2) && \
+#if defined(USE_ESP32) && !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32C6) && \
-    !defined(USE_ESP32_VARIANT_ESP32S3)
+    !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
       case UART_SELECTION_UART2:
         this->hw_serial_ = &Serial2;
         Serial2.begin(this->baud_rate_);
@@ -215,7 +215,8 @@ void Logger::pre_setup() {
       case UART_SELECTION_UART1:
         uart_num_ = UART_NUM_1;
         break;
-#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
+#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32C6) && \
+    !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
       case UART_SELECTION_UART2:
         uart_num_ = UART_NUM_2;
         break;
@@ -225,11 +226,11 @@ void Logger::pre_setup() {
         uart_num_ = -1;
         break;
 #endif  // USE_ESP32_VARIANT_ESP32S2 || USE_ESP32_VARIANT_ESP32S3
-#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32S3)
+#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S3)
       case UART_SELECTION_USB_SERIAL_JTAG:
         uart_num_ = -1;
         break;
-#endif  // USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32S3
+#endif  // USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C6 || USE_ESP32_VARIANT_ESP32S3
     }
     if (uart_num_ >= 0) {
       uart_config_t uart_config{};
@@ -278,7 +279,8 @@ const char *const LOG_LEVELS[] = {"NONE", "ERROR", "WARN", "INFO", "CONFIG", "DE
 #ifdef USE_ESP32
 const char *const UART_SELECTIONS[] = {
     "UART0",           "UART1",
-#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
+#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32C6) && \
+    !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
     "UART2",
 #endif  // !USE_ESP32_VARIANT_ESP32C3 && !USE_ESP32_VARIANT_ESP32S2 && !USE_ESP32_VARIANT_ESP32S3
 #if defined(USE_ESP_IDF)

esphome/components/logger/logger.h

@@ -34,14 +34,15 @@ enum UARTSelection {
   UART_SELECTION_UART0 = 0,
   UART_SELECTION_UART1,
 #if defined(USE_ESP32)
-#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
+#if !defined(USE_ESP32_VARIANT_ESP32C3) && !defined(USE_ESP32_VARIANT_ESP32C6) && \
+    !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32S3)
   UART_SELECTION_UART2,
 #endif  // !USE_ESP32_VARIANT_ESP32C3 && !USE_ESP32_VARIANT_ESP32S2 && !USE_ESP32_VARIANT_ESP32S3
 #ifdef USE_ESP_IDF
 #if defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3)
   UART_SELECTION_USB_CDC,
 #endif  // USE_ESP32_VARIANT_ESP32S2 || USE_ESP32_VARIANT_ESP32S3
-#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32S3)
+#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S3)
   UART_SELECTION_USB_SERIAL_JTAG,
 #endif  // USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32S3
 #endif  // USE_ESP_IDF

esphome/components/spi/spi.cpp

@@ -76,7 +76,8 @@ void SPIComponent::setup() {
     if (spi_bus_num == 0) {
       this->hw_spi_ = &SPI;
     } else {
-#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3)
+#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3) || \
+    defined(USE_ESP32_VARIANT_ESP32C2) || defined(USE_ESP32_VARIANT_ESP32C6)
       this->hw_spi_ = new SPIClass(FSPI);  // NOLINT(cppcoreguidelines-owning-memory)
 #else
       this->hw_spi_ = new SPIClass(HSPI);  // NOLINT(cppcoreguidelines-owning-memory)