temperature_sensor: Add temperature sensor support for ESP32-C2

components/soc/esp32c2/CMakeLists.txt

@@ -8,6 +8,7 @@ set(srcs
     "ledc_periph.c"
     "i2c_periph.c"
     "uart_periph.c"
+    "temperature_sensor_periph.c"
     "timer_periph.c")
 
 add_prefix(srcs "${CMAKE_CURRENT_LIST_DIR}/" "${srcs}")

components/soc/esp32c2/include/soc/Kconfig.soc_caps.in

@@ -43,6 +43,10 @@ config SOC_EFUSE_CONSISTS_OF_ONE_KEY_BLOCK
     bool
     default y
 
+config SOC_TEMP_SENSOR_SUPPORTED
+    bool
+    default y
+
 config SOC_SHA_SUPPORTED
     bool
     default y

components/soc/esp32c2/include/soc/apb_saradc_struct.h

@@ -684,6 +684,7 @@ typedef struct {
     volatile apb_saradc_apb_ctrl_date_reg_t saradc_apb_ctrl_date;
 } apb_dev_t;
 
+extern apb_dev_t APB_SARADC;
 
 #ifndef __cplusplus
 _Static_assert(sizeof(apb_dev_t) == 0x400, "Invalid size of apb_dev_t structure");

components/soc/esp32c2/include/soc/periph_defs.h

@@ -32,6 +32,7 @@ typedef enum {
     PERIPH_GDMA_MODULE,
     PERIPH_SYSTIMER_MODULE,
     PERIPH_SARADC_MODULE,
+    PERIPH_TEMPSENSOR_MODULE,
     PERIPH_MODEM_RPA_MODULE,
     PERIPH_MODULE_MAX
 } periph_module_t;

components/soc/esp32c2/include/soc/soc_caps.h

@@ -35,7 +35,7 @@
 #define SOC_SUPPORTS_SECURE_DL_MODE     1
 #define SOC_EFUSE_KEY_PURPOSE_FIELD     0
 #define SOC_EFUSE_CONSISTS_OF_ONE_KEY_BLOCK 1
-
+#define SOC_TEMP_SENSOR_SUPPORTED       1
 #define SOC_SHA_SUPPORTED               1
 #define SOC_ECC_SUPPORTED               1
 #define SOC_FLASH_ENC_SUPPORTED         1

components/soc/esp32c2/temperature_sensor_periph.c

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "soc/temperature_sensor_periph.h"
+
+const temperature_sensor_attribute_t temperature_sensor_attributes[TEMPERATURE_SENSOR_ATTR_RANGE_NUM] = {
+    /*Offset   reg_val  min  max  error */
+    {-2,     5,    50,  125,   3},
+    {-1,     7,    20,  100,   2},
+    { 0,    15,   -10,   80,   1},
+    { 1,    11,   -30,   50,   2},
+    { 2,    10,   -40,   20,   3},
+};