fix(adc): rename ADC_ATTEN_DB_11 to ADC_ATTEN_DB_12

By design, it's 12 dB. There're errors among chips, so the actual
attenuation will be 11dB more or less

components/driver/deprecated/adc_i2s_deprecated.c

@@ -56,7 +56,7 @@ esp_pm_lock_handle_t adc_digi_arbiter_lock = NULL;
         ESP32 Depricated ADC APIs and functions
 ---------------------------------------------------------------*/
 #define DIG_ADC_OUTPUT_FORMAT_DEFUALT (ADC_DIGI_FORMAT_12BIT)
-#define DIG_ADC_ATTEN_DEFUALT         (ADC_ATTEN_DB_11)
+#define DIG_ADC_ATTEN_DEFUALT         (ADC_ATTEN_DB_12)
 #define DIG_ADC_BIT_WIDTH_DEFUALT     (3)   //3 for ADC_WIDTH_BIT_12
 
 /**

components/driver/deprecated/adc_legacy.c

@@ -802,7 +802,7 @@ int adc1_get_raw(adc1_channel_t channel)
 esp_err_t adc2_config_channel_atten(adc2_channel_t channel, adc_atten_t atten)
 {
     ESP_RETURN_ON_FALSE(channel < SOC_ADC_CHANNEL_NUM(ADC_UNIT_2), ESP_ERR_INVALID_ARG, ADC_TAG, "ADC2 channel error");
-    ESP_RETURN_ON_FALSE((atten <= ADC_ATTEN_DB_11), ESP_ERR_INVALID_ARG, ADC_TAG, "ADC2 Atten Err");
+    ESP_RETURN_ON_FALSE((atten <= ADC_ATTEN_DB_12), ESP_ERR_INVALID_ARG, ADC_TAG, "ADC2 Atten Err");
 
     esp_err_t ret = ESP_OK;
     s_atten2_single[channel] = atten;

components/driver/test_apps/dac_test_apps/dac/main/test_dac.c

@@ -33,7 +33,7 @@
 #define ADC_TEST_WIDTH         ADC_BITWIDTH_13
 #endif
 
-#define ADC_TEST_ATTEN         ADC_ATTEN_DB_11
+#define ADC_TEST_ATTEN         ADC_ATTEN_DB_12
 
 TEST_CASE("DAC_API_basic_logic_test", "[dac]")
 {

components/driver/test_apps/dac_test_apps/legacy_dac_driver/main/test_legacy_dac.c

@@ -28,7 +28,7 @@ static const char *TAG = "test_dac";
 #elif defined CONFIG_IDF_TARGET_ESP32S2
 #define ADC_TEST_WIDTH         ADC_WIDTH_BIT_13   //ESP32S2 only support 13 bit width
 #endif
-#define ADC_TEST_ATTEN         ADC_ATTEN_DB_11
+#define ADC_TEST_ATTEN         ADC_ATTEN_DB_12
 
 #if CONFIG_IDF_TARGET_ESP32
 #define ADC_TEST_CHANNEL_NUM   ADC2_CHANNEL_8   // GPIO25
@@ -174,8 +174,8 @@ TEST_CASE("esp32s2_adc2-dac_with_adc2_calibration", "[dac_legacy]")
     subtest_adc_dac(1250, &chars);
 
     printf("Test 11dB atten...\n");
-    adc2_config_channel_atten((adc2_channel_t)ADC_TEST_CHANNEL_NUM, ADC_ATTEN_DB_11);
-    esp_adc_cal_characterize(ADC_UNIT_2, ADC_ATTEN_DB_11, ADC_WIDTH_BIT_13, 0, &chars);
+    adc2_config_channel_atten((adc2_channel_t)ADC_TEST_CHANNEL_NUM, ADC_ATTEN_DB_12);
+    esp_adc_cal_characterize(ADC_UNIT_2, ADC_ATTEN_DB_12, ADC_WIDTH_BIT_13, 0, &chars);
     printf("a %"PRIu32", b %"PRIu32"\n", chars.coeff_a, chars.coeff_b);
     subtest_adc_dac(1500, &chars);
     subtest_adc_dac(2500, &chars);

components/driver/test_apps/i2s_test_apps/legacy_i2s_driver/main/test_legacy_i2s.c

@@ -114,7 +114,7 @@ TEST_CASE("I2S_adc_test", "[i2s_legacy]")
     i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
     // init ADC pad
     i2s_set_adc_mode(ADC_UNIT_1, ADC1_CHANNEL_4);
-    // enable adc sampling, ADC_WIDTH_BIT_12, ADC_ATTEN_DB_11 hard-coded in adc_i2s_mode_init
+    // enable adc sampling, ADC_WIDTH_BIT_12, ADC_ATTEN_DB_12 hard-coded in adc_i2s_mode_init
     i2s_adc_enable(I2S_NUM_0);
     // init read buffer
     uint16_t *i2sReadBuffer = (uint16_t *)calloc(1024, sizeof(uint16_t));

components/driver/test_apps/legacy_adc_driver/main/test_legacy_adc.c

@@ -110,10 +110,10 @@ TEST_CASE("Legacy ADC oneshot high/low test", "[legacy_adc_oneshot]")
     int adc_raw = 0;
     //ADC1 config
     TEST_ESP_OK(adc1_config_width(ADC_WIDTH_BIT_DEFAULT));
-    TEST_ESP_OK(adc1_config_channel_atten(ADC1_TEST_CHAN0, ADC_ATTEN_DB_11));
+    TEST_ESP_OK(adc1_config_channel_atten(ADC1_TEST_CHAN0, ADC_ATTEN_DB_12));
 #if ADC_TEST_ADC2
     //ADC2 config
-    TEST_ESP_OK(adc2_config_channel_atten(ADC2_TEST_CHAN0, ADC_ATTEN_DB_11));
+    TEST_ESP_OK(adc2_config_channel_atten(ADC2_TEST_CHAN0, ADC_ATTEN_DB_12));
 #endif
 
     test_adc_set_io_level(ADC_UNIT_1, (adc1_channel_t)ADC1_TEST_CHAN0, 0);

components/efuse/esp32c2/esp_efuse_rtc_calib.c

@@ -28,12 +28,12 @@ uint32_t esp_efuse_rtc_calib_get_init_code(int version, uint32_t adc_unit, int a
 {
     assert((version >= ESP_EFUSE_ADC_CALIB_VER_MIN) &&
            (version <= ESP_EFUSE_ADC_CALIB_VER_MAX));
-    assert(atten <= ADC_ATTEN_DB_11);
+    assert(atten <= ADC_ATTEN_DB_12);
     (void) adc_unit;
 
     if (atten == ADC_ATTEN_DB_2_5 || atten == ADC_ATTEN_DB_6) {
         /**
-         * - ESP32C2 only supports HW calibration on ADC_ATTEN_DB_0 and ADC_ATTEN_DB_11
+         * - ESP32C2 only supports HW calibration on ADC_ATTEN_DB_0 and ADC_ATTEN_DB_12
          * - For other attenuation, we just return default value, which is 0.
          */
         return 0;
@@ -56,7 +56,7 @@ uint32_t esp_efuse_rtc_calib_get_init_code(int version, uint32_t adc_unit, int a
     if (atten == ADC_ATTEN_DB_0) {
         init_code = adc_icode_diff_atten0 + 2160;
     } else {
-        //ADC_ATTEN_DB_11
+        //ADC_ATTEN_DB_12
         init_code = adc_icode_diff_atten3 + adc_icode_diff_atten0 + 2160;
     }
 
@@ -76,7 +76,7 @@ esp_err_t esp_efuse_rtc_calib_get_cal_voltage(int version, uint32_t adc_unit, in
 
     if (atten == ADC_ATTEN_DB_2_5 || atten == ADC_ATTEN_DB_6) {
         /**
-         * - ESP32C2 only supports SW calibration on ADC_ATTEN_DB_0 and ADC_ATTEN_DB_11
+         * - ESP32C2 only supports SW calibration on ADC_ATTEN_DB_0 and ADC_ATTEN_DB_12
          * - For other attenuation, we need to return an error, informing upper layer SW calibration driver
          *   to deal with the error.
          */
@@ -101,7 +101,7 @@ esp_err_t esp_efuse_rtc_calib_get_cal_voltage(int version, uint32_t adc_unit, in
         *out_digi = adc_vol_diff_atten0 + 1540;
         *out_vol_mv = 400;
     } else {
-        //ADC_ATTEN_DB_11
+        //ADC_ATTEN_DB_12
         *out_digi = adc_vol_diff_atten0 + 1540 - adc_vol_diff_atten3 - 123;
         *out_vol_mv = 1370;
     }

components/esp_adc/deprecated/esp32/esp_adc_cal_legacy.c

@@ -316,7 +316,7 @@ esp_adc_cal_value_t esp_adc_cal_characterize(adc_unit_t adc_num,
     chars->bit_width = bit_width;
     chars->vref = (EFUSE_VREF_ENABLED && efuse_vref_present) ? read_efuse_vref() : default_vref;
     //Initialize fields for lookup table if necessary
-    if (LUT_ENABLED && atten == ADC_ATTEN_DB_11) {
+    if (LUT_ENABLED && atten == ADC_ATTEN_DB_12) {
         chars->low_curve = (adc_num == ADC_UNIT_1) ? lut_adc1_low : lut_adc2_low;
         chars->high_curve = (adc_num == ADC_UNIT_1) ? lut_adc1_high : lut_adc2_high;
     } else {
@@ -336,8 +336,8 @@ uint32_t esp_adc_cal_raw_to_voltage(uint32_t adc_reading, const esp_adc_cal_char
         adc_reading = ADC_12_BIT_RES - 1;    //Set to 12bit res max
     }
 
-    if (LUT_ENABLED && (chars->atten == ADC_ATTEN_DB_11) && (adc_reading >= LUT_LOW_THRESH)) {  //Check if in non-linear region
-        //Use lookup table to get voltage in non linear portion of ADC_ATTEN_DB_11
+    if (LUT_ENABLED && (chars->atten == ADC_ATTEN_DB_12) && (adc_reading >= LUT_LOW_THRESH)) {  //Check if in non-linear region
+        //Use lookup table to get voltage in non linear portion of ADC_ATTEN_DB_12
         uint32_t lut_voltage = calculate_voltage_lut(adc_reading, chars->vref, chars->low_curve, chars->high_curve);
         if (adc_reading <= LUT_HIGH_THRESH) {   //If ADC is transitioning from linear region to non-linear region
             //Linearly interpolate between linear voltage and lut voltage

components/esp_adc/deprecated/esp32s2/esp_adc_cal_legacy.c

@@ -75,7 +75,7 @@ static bool prepare_calib_data_for(adc_unit_t adc_num, adc_atten_t atten, adc_ca
         case ADC_ATTEN_DB_6:
             parsed_data_storage->efuse_data.ver2.adc_calib_high_voltage = 1000;
             break;
-        case ADC_ATTEN_DB_11:
+        case ADC_ATTEN_DB_12:
             parsed_data_storage->efuse_data.ver2.adc_calib_high_voltage = 2000;
             break;
         default:

components/esp_adc/esp32/adc_cali_line_fitting.c

@@ -190,7 +190,7 @@ esp_err_t adc_cali_create_scheme_line_fitting(const adc_cali_line_fitting_config
     chars->atten = config->atten;
     chars->bitwidth = (config->bitwidth == ADC_BITWIDTH_DEFAULT) ? ADC_BITWIDTH_12 : config->bitwidth;
     //Initialize fields for lookup table if necessary
-    if (LUT_ENABLED && config->atten == ADC_ATTEN_DB_11) {
+    if (LUT_ENABLED && config->atten == ADC_ATTEN_DB_12) {
         chars->low_curve = (config->unit_id == ADC_UNIT_1) ? lut_adc1_low : lut_adc2_low;
         chars->high_curve = (config->unit_id == ADC_UNIT_1) ? lut_adc1_high : lut_adc2_high;
     } else {
@@ -251,8 +251,8 @@ static esp_err_t cali_raw_to_voltage(void *arg, int raw, int *voltage)
         raw = ADC_12_BIT_RES - 1;    //Set to 12bit res max
     }
 
-    if (LUT_ENABLED && (ctx->atten == ADC_ATTEN_DB_11) && (raw >= LUT_LOW_THRESH)) {  //Check if in non-linear region
-        //Use lookup table to get voltage in non linear portion of ADC_ATTEN_DB_11
+    if (LUT_ENABLED && (ctx->atten == ADC_ATTEN_DB_12) && (raw >= LUT_LOW_THRESH)) {  //Check if in non-linear region
+        //Use lookup table to get voltage in non linear portion of ADC_ATTEN_DB_12
         uint32_t lut_voltage = calculate_voltage_lut(raw, ctx->vref, ctx->low_curve, ctx->high_curve);
         if (raw <= LUT_HIGH_THRESH) {   //If ADC is transitioning from linear region to non-linear region
             //Linearly interpolate between linear voltage and lut voltage

components/esp_adc/esp32c2/adc_cali_line_fitting.c

@@ -118,7 +118,7 @@ static esp_err_t cali_raw_to_voltage(void *arg, int raw, int *voltage)
 static esp_err_t check_valid(const adc_cali_line_fitting_config_t *config)
 {
     ESP_RETURN_ON_FALSE(config->unit_id < SOC_ADC_PERIPH_NUM, ESP_ERR_INVALID_ARG, TAG, "invalid ADC unit");
-    ESP_RETURN_ON_FALSE((config->atten == ADC_ATTEN_DB_0 || config->atten == ADC_ATTEN_DB_11), ESP_ERR_NOT_SUPPORTED, TAG, "only ADC_ATTEN_DB_0 and ADC_ATTEN_DB_11 are supported");
+    ESP_RETURN_ON_FALSE((config->atten == ADC_ATTEN_DB_0 || config->atten == ADC_ATTEN_DB_12), ESP_ERR_NOT_SUPPORTED, TAG, "only ADC_ATTEN_DB_0 and ADC_ATTEN_DB_12 are supported");
     if (config->atten == ADC_ATTEN_DB_0) {
         ESP_LOGW(TAG, "Experimental: ADC Atten 0 calibration can now only used for inputs lower than 950mV. Calibration Scheme may get updated, DON'T USE FOR MASS PRODUCTION!");
     }

components/esp_adc/esp32s2/adc_cali_line_fitting.c

@@ -177,7 +177,7 @@ static bool prepare_calib_data_for(adc_unit_t unit_id, adc_atten_t atten, adc_ca
         case ADC_ATTEN_DB_6:
             parsed_data_storage->efuse_data.ver2.adc_calib_high_voltage = 1000;
             break;
-        case ADC_ATTEN_DB_11:
+        case ADC_ATTEN_DB_12:
             parsed_data_storage->efuse_data.ver2.adc_calib_high_voltage = 2000;
             break;
         default:

components/esp_adc/test_apps/adc/main/test_adc.c

@@ -66,7 +66,7 @@ TEST_CASE("ADC oneshot high/low test", "[adc_oneshot]")
     //-------------ADC1 TEST Channel 0 Config---------------//
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     TEST_ESP_OK(adc_oneshot_config_channel(adc1_handle, ADC1_TEST_CHAN0, &config));
 
@@ -124,7 +124,7 @@ TEST_CASE("ADC oneshot stress test that get zero even if convent done", "[adc_on
 
     int test_num = 100;
     adc_channel_t channel = ADC1_TEST_CHAN1;
-    adc_atten_t atten = ADC_ATTEN_DB_11;
+    adc_atten_t atten = ADC_ATTEN_DB_12;
     adc_unit_t unit_id = ADC_UNIT_1;
 
     adc_oneshot_unit_handle_t adc1_handle;
@@ -322,7 +322,7 @@ TEST_CASE("ADC continuous monitor init_deinit", "[adc]")
 
     adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};
     for (int i = 0; i < 1; i++) {
-        adc_pattern[i].atten = ADC_ATTEN_DB_11;
+        adc_pattern[i].atten = ADC_ATTEN_DB_12;
         adc_pattern[i].channel = i;
         adc_pattern[i].unit = ADC_UNIT_1;
         adc_pattern[i].bit_width = SOC_ADC_DIGI_MAX_BITWIDTH;
@@ -440,7 +440,7 @@ TEST_CASE("ADC continuous monitor functionary", "[adc][manual][ignore]")
 
     adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};
     for (int i = 0; i < 2; i++) {
-        adc_pattern[i].atten = ADC_ATTEN_DB_11;
+        adc_pattern[i].atten = ADC_ATTEN_DB_12;
         adc_pattern[i].channel = TEST_ADC_CHANNEL;
         adc_pattern[i].unit = ADC_UNIT_1;
         adc_pattern[i].bit_width = SOC_ADC_DIGI_MAX_BITWIDTH;

components/esp_adc/test_apps/adc/main/test_adc_driver.c

@@ -80,7 +80,7 @@ TEST_CASE("ADC oneshot fast work with ISR", "[adc_oneshot]")
     //-------------ADC1 TEST Channel 0 Config---------------//
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     TEST_ESP_OK(adc_oneshot_config_channel(isr_test_ctx.oneshot_handle, ADC1_TEST_CHAN0, &config));
 
@@ -171,7 +171,7 @@ TEST_CASE("ADC continuous big conv_frame_size test", "[adc_continuous]")
         .format = ADC_DRIVER_TEST_OUTPUT_TYPE,
     };
     adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};
-    adc_pattern[0].atten = ADC_ATTEN_DB_11;
+    adc_pattern[0].atten = ADC_ATTEN_DB_12;
     adc_pattern[0].channel = ADC1_TEST_CHAN0;
     adc_pattern[0].unit = ADC_UNIT_1;
     adc_pattern[0].bit_width = SOC_ADC_DIGI_MAX_BITWIDTH;
@@ -229,7 +229,7 @@ TEST_CASE("ADC continuous flush internal pool", "[adc_continuous][mannual][ignor
         .format = ADC_DRIVER_TEST_OUTPUT_TYPE,
     };
     adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};
-    adc_pattern[0].atten = ADC_ATTEN_DB_11;
+    adc_pattern[0].atten = ADC_ATTEN_DB_12;
     adc_pattern[0].channel = ADC1_TEST_CHAN0;
     adc_pattern[0].unit = ADC_UNIT_1;
     adc_pattern[0].bit_width = SOC_ADC_DIGI_MAX_BITWIDTH;

components/esp_adc/test_apps/adc/main/test_adc_driver_iram.c

@@ -84,7 +84,7 @@ TEST_CASE("ADC oneshot fast work with ISR and Flash", "[adc_oneshot]")
     //-------------ADC1 TEST Channel 0 Config---------------//
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     TEST_ESP_OK(adc_oneshot_config_channel(oneshot_handle, ADC1_TEST_CHAN0, &config));
 

components/esp_adc/test_apps/adc/main/test_adc_performance.c

@@ -269,29 +269,29 @@ TEST_CASE("ADC1 continuous raw average and std_deviation", "[adc_continuous][man
 
 TEST_CASE("ADC1 continuous std deviation performance, no filter", "[adc_continuous][performance]")
 {
-    float std = test_adc_continuous_std(ADC_ATTEN_DB_11, false, 0, true);
+    float std = test_adc_continuous_std(ADC_ATTEN_DB_12, false, 0, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_NO_FILTER, "%.2f", std);
 }
 
 #if SOC_ADC_DIG_IIR_FILTER_SUPPORTED
 TEST_CASE("ADC1 continuous std deviation performance, with filter", "[adc_continuous][performance]")
 {
-    float std = test_adc_continuous_std(ADC_ATTEN_DB_11, false, 0, true);
+    float std = test_adc_continuous_std(ADC_ATTEN_DB_12, false, 0, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_NO_FILTER, "%.2f", std);
 
-    std = test_adc_continuous_std(ADC_ATTEN_DB_11, true, ADC_DIGI_IIR_FILTER_COEFF_2, true);
+    std = test_adc_continuous_std(ADC_ATTEN_DB_12, true, ADC_DIGI_IIR_FILTER_COEFF_2, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_FILTER_2, "%.2f", std);
 
-    std = test_adc_continuous_std(ADC_ATTEN_DB_11, true, ADC_DIGI_IIR_FILTER_COEFF_4, true);
+    std = test_adc_continuous_std(ADC_ATTEN_DB_12, true, ADC_DIGI_IIR_FILTER_COEFF_4, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_FILTER_4, "%.2f", std);
 
-    std = test_adc_continuous_std(ADC_ATTEN_DB_11, true, ADC_DIGI_IIR_FILTER_COEFF_8, true);
+    std = test_adc_continuous_std(ADC_ATTEN_DB_12, true, ADC_DIGI_IIR_FILTER_COEFF_8, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_FILTER_8, "%.2f", std);
 
-    std = test_adc_continuous_std(ADC_ATTEN_DB_11, true, ADC_DIGI_IIR_FILTER_COEFF_16, true);
+    std = test_adc_continuous_std(ADC_ATTEN_DB_12, true, ADC_DIGI_IIR_FILTER_COEFF_16, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_FILTER_16, "%.2f", std);
 
-    std = test_adc_continuous_std(ADC_ATTEN_DB_11, true, ADC_DIGI_IIR_FILTER_COEFF_64, true);
+    std = test_adc_continuous_std(ADC_ATTEN_DB_12, true, ADC_DIGI_IIR_FILTER_COEFF_64, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_CONTINUOUS_STD_ATTEN3_FILTER_64, "%.2f", std);
 }
 #endif  //#if SOC_ADC_DIG_IIR_FILTER_SUPPORTED
@@ -375,7 +375,7 @@ TEST_CASE("ADC1 oneshot raw average and std_deviation", "[adc_oneshot][manual]")
 
 TEST_CASE("ADC1 oneshot std_deviation performance", "[adc_oneshot][performance]")
 {
-    float std = test_adc_oneshot_std(ADC_ATTEN_DB_11, true);
+    float std = test_adc_oneshot_std(ADC_ATTEN_DB_12, true);
     TEST_PERFORMANCE_LESS_THAN(ADC_ONESHOT_STD_ATTEN3, "%.2f", std);
 }
 /*---------------------------------------------------------------

components/esp_adc/test_apps/adc/main/test_adc_wifi.c

@@ -170,7 +170,7 @@ __attribute__((unused)) static void adc_work_with_wifi(adc_unit_t unit_id, adc_c
     //-------------ADC TEST Channel Config---------------//
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     TEST_ESP_OK(adc_oneshot_config_channel(adc_handle, channel, &config));
 

components/esp_adc/test_apps/adc/main/test_common_adc.c

@@ -20,9 +20,9 @@ __attribute__((unused)) static const char *TAG = "TEST_ADC";
         ADC Attenuation
 ---------------------------------------------------------------*/
 #if CONFIG_IDF_TARGET_ESP32C2
-adc_atten_t g_test_atten[TEST_ATTEN_NUMS] = {ADC_ATTEN_DB_0, ADC_ATTEN_DB_11};
+adc_atten_t g_test_atten[TEST_ATTEN_NUMS] = {ADC_ATTEN_DB_0, ADC_ATTEN_DB_12};
 #else
-adc_atten_t g_test_atten[TEST_ATTEN_NUMS] = {ADC_ATTEN_DB_0, ADC_ATTEN_DB_2_5, ADC_ATTEN_DB_6, ADC_ATTEN_DB_11};
+adc_atten_t g_test_atten[TEST_ATTEN_NUMS] = {ADC_ATTEN_DB_0, ADC_ATTEN_DB_2_5, ADC_ATTEN_DB_6, ADC_ATTEN_DB_12};
 #endif
 
 #if SOC_ADC_DIG_IIR_FILTER_SUPPORTED

components/esp_hw_support/port/esp32c3/adc2_init_cal.c

@@ -22,9 +22,9 @@ extern portMUX_TYPE rtc_spinlock;
 static __attribute__((constructor)) void adc2_init_code_calibration(void)
 {
     adc_hal_calibration_init(ADC_UNIT_2);
-    adc_calc_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_11);
+    adc_calc_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
     portENTER_CRITICAL(&rtc_spinlock);
-    adc_set_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_11);
+    adc_set_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
     portEXIT_CRITICAL(&rtc_spinlock);
 }
 

components/esp_hw_support/port/esp32s2/adc2_init_cal.c

@@ -22,9 +22,9 @@ extern portMUX_TYPE rtc_spinlock;
 static __attribute__((constructor)) void adc2_init_code_calibration(void)
 {
     adc_hal_calibration_init(ADC_UNIT_2);
-    adc_calc_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_11);
+    adc_calc_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
     portENTER_CRITICAL(&rtc_spinlock);
-    adc_set_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_11);
+    adc_set_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
     portEXIT_CRITICAL(&rtc_spinlock);
 }
 

components/hal/esp32s2/include/hal/adc_ll.h

@@ -849,7 +849,7 @@ static inline void adc_ll_rtc_set_arbiter_stable_cycle(uint32_t cycle)
  * - 0dB attenuation (ADC_ATTEN_DB_0) gives full-scale voltage 1.1V
  * - 2.5dB attenuation (ADC_ATTEN_DB_2_5) gives full-scale voltage 1.5V
  * - 6dB attenuation (ADC_ATTEN_DB_6) gives full-scale voltage 2.2V
- * - 11dB attenuation (ADC_ATTEN_DB_11) gives full-scale voltage 3.9V (see note below)
+ * - 11dB attenuation (ADC_ATTEN_DB_12) gives full-scale voltage 3.9V (see note below)
  *
  * @note The full-scale voltage is the voltage corresponding to a maximum reading (depending on ADC1 configured
  * bit width, this value is: 4095 for 12-bits, 2047 for 11-bits, 1023 for 10-bits, 511 for 9 bits.)
@@ -861,7 +861,7 @@ static inline void adc_ll_rtc_set_arbiter_stable_cycle(uint32_t cycle)
  * - 0dB attenuation (ADC_ATTEN_DB_0) between 100 and 950mV
  * - 2.5dB attenuation (ADC_ATTEN_DB_2_5) between 100 and 1250mV
  * - 6dB attenuation (ADC_ATTEN_DB_6) between 150 to 1750mV
- * - 11dB attenuation (ADC_ATTEN_DB_11) between 150 to 2450mV
+ * - 11dB attenuation (ADC_ATTEN_DB_12) between 150 to 2450mV
  *
  * For maximum accuracy, use the ADC calibration APIs and measure voltages within these recommended ranges.
  *

components/hal/esp32s3/include/hal/adc_ll.h

@@ -1109,7 +1109,7 @@ static inline void adc_ll_rtc_set_arbiter_stable_cycle(uint32_t cycle)
  * - 0dB attenuation (ADC_ATTEN_DB_0) gives full-scale voltage 1.1V
  * - 2.5dB attenuation (ADC_ATTEN_DB_2_5) gives full-scale voltage 1.5V
  * - 6dB attenuation (ADC_ATTEN_DB_6) gives full-scale voltage 2.2V
- * - 11dB attenuation (ADC_ATTEN_DB_11) gives full-scale voltage 3.9V (see note below)
+ * - 11dB attenuation (ADC_ATTEN_DB_12) gives full-scale voltage 3.9V (see note below)
  *
  * @note The full-scale voltage is the voltage corresponding to a maximum reading (depending on ADC1 configured
  * bit width, this value is: 4095 for 12-bits, 2047 for 11-bits, 1023 for 10-bits, 511 for 9 bits.)
@@ -1121,7 +1121,7 @@ static inline void adc_ll_rtc_set_arbiter_stable_cycle(uint32_t cycle)
  * - 0dB attenuation (ADC_ATTEN_DB_0) between 100 and 950mV
  * - 2.5dB attenuation (ADC_ATTEN_DB_2_5) between 100 and 1250mV
  * - 6dB attenuation (ADC_ATTEN_DB_6) between 150 to 1750mV
- * - 11dB attenuation (ADC_ATTEN_DB_11) between 150 to 2450mV
+ * - 11dB attenuation (ADC_ATTEN_DB_12) between 150 to 2450mV
  *
  * For maximum accuracy, use the ADC calibration APIs and measure voltages within these recommended ranges.
  *

components/hal/include/hal/adc_types.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -45,9 +45,10 @@ typedef enum {
  */
 typedef enum {
     ADC_ATTEN_DB_0   = 0,  ///<No input attenuation, ADC can measure up to approx.
-    ADC_ATTEN_DB_2_5 = 1,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 2.5 dB (1.33 x)
-    ADC_ATTEN_DB_6   = 2,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 6 dB (2 x)
-    ADC_ATTEN_DB_11  = 3,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 11 dB (3.55 x)
+    ADC_ATTEN_DB_2_5 = 1,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 2.5 dB
+    ADC_ATTEN_DB_6   = 2,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 6 dB
+    ADC_ATTEN_DB_12  = 3,  ///<The input voltage of ADC will be attenuated extending the range of measurement by about 12 dB
+    ADC_ATTEN_DB_11 __attribute__((deprecated)) = ADC_ATTEN_DB_12,  ///<This is deprecated, it behaves the same as `ADC_ATTEN_DB_12`
 } adc_atten_t;
 
 typedef enum {

docs/en/api-reference/peripherals/adc_calibration.rst

@@ -157,7 +157,7 @@ After setting up the calibration characteristics, you can call :cpp:func:`adc_ca
 
     .. note::
 
-        ADC calibration is only supported under :c:macro:`ADC_ATTEN_DB_0` and :c:macro:`ADC_ATTEN_DB_11`. Under :c:macro:`ADC_ATTEN_DB_0`, the attenuation of ADC is set to 0 dB, and input voltage higher than 950 mV is not supported. Under :c:macro:`ADC_ATTEN_DB_11`, the attenuation of ADC is set to 11 dB, and input voltage higher than 2800 mV is not supported.
+        ADC calibration is only supported under :c:macro:`ADC_ATTEN_DB_0` and :c:macro:`ADC_ATTEN_DB_12`. Under :c:macro:`ADC_ATTEN_DB_0`, the attenuation of ADC is set to 0 dB, and input voltage higher than 950 mV is not supported. Under :c:macro:`ADC_ATTEN_DB_12`, the attenuation of ADC is set to 11 dB, and input voltage higher than 2800 mV is not supported.
 
 Get Voltage
 ~~~~~~~~~~~
@@ -187,7 +187,7 @@ Other functions that take the :cpp:type:`adc_cali_handle_t` as the first positio
 
     - :ref:`CONFIG_ADC_CAL_EFUSE_TP_ENABLE` - disable this to decrease the code size, if the calibration eFuse value is not set to :cpp:type:`ADC_CALI_LINE_FITTING_EFUSE_VAL_EFUSE_TP`.
     - :ref:`CONFIG_ADC_CAL_EFUSE_VREF_ENABLE` - disable this to decrease the code size, if the calibration eFuse value is not set to :cpp:type:`ADC_CALI_LINE_FITTING_EFUSE_VAL_EFUSE_VREF`.
-    - :ref:`CONFIG_ADC_CAL_LUT_ENABLE` - disable this to decrease the code size, if you do not calibrate the ADC raw results under :c:macro:`ADC_ATTEN_DB_11`.
+    - :ref:`CONFIG_ADC_CAL_LUT_ENABLE` - disable this to decrease the code size, if you do not calibrate the ADC raw results under :c:macro:`ADC_ATTEN_DB_12`.
 
 
 .. _adc-minimize-noise:

docs/en/api-reference/peripherals/adc_oneshot.rst

@@ -105,7 +105,7 @@ Configure Two ADC Channels
 
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     ESP_ERROR_CHECK(adc_oneshot_config_channel(adc1_handle, EXAMPLE_ADC1_CHAN0, &config));
     ESP_ERROR_CHECK(adc_oneshot_config_channel(adc1_handle, EXAMPLE_ADC1_CHAN1, &config));

docs/zh_CN/api-reference/peripherals/adc_calibration.rst

@@ -148,7 +148,7 @@ ADC 校准驱动程序会提供 ADC 校准方案。对于驱动程序来说，
 
     .. note::
 
-        ADC 校准仅在 :c:macro:`ADC_ATTEN_DB_0` 和 :c:macro:`ADC_ATTEN_DB_11` 时支持。在 :c:macro:`ADC_ATTEN_DB_0` 时，ADC 的衰减程度设置为 0 dB，仅支持低于 950 mV 的输入电压；在 :c:macro:`ADC_ATTEN_DB_11` 时，ADC 的衰减程度设置为 11 dB，仅支持低于 2800 mV 的输入电压。
+        ADC 校准仅在 :c:macro:`ADC_ATTEN_DB_0` 和 :c:macro:`ADC_ATTEN_DB_12` 时支持。在 :c:macro:`ADC_ATTEN_DB_0` 时，ADC 的衰减程度设置为 0 dB，仅支持低于 950 mV 的输入电压；在 :c:macro:`ADC_ATTEN_DB_12` 时，ADC 的衰减程度设置为 12 dB，仅支持低于 2800 mV 的输入电压。
 
 获取电压
 ~~~~~~~~~~~
@@ -178,7 +178,7 @@ ADC 校准驱动程序会提供 ADC 校准方案。对于驱动程序来说，
 
     - :ref:`CONFIG_ADC_CAL_EFUSE_TP_ENABLE` - 如果校准相关的 eFuse 值没有配置为 :cpp:type:`ADC_CALI_LINE_FITTING_EFUSE_VAL_EFUSE_TP`，则可以禁用该选项，减小代码大小。
     - :ref:`CONFIG_ADC_CAL_EFUSE_VREF_ENABLE` - 如果校准相关的 eFuse 值没有配置为 :cpp:type:`ADC_CALI_LINE_FITTING_EFUSE_VAL_EFUSE_VREF`，则可以禁用该选项，减小代码大小。
-    - :ref:`CONFIG_ADC_CAL_LUT_ENABLE` - 如果校准 ADC 原始结果时，衰减没有设置成 :c:macro:`ADC_ATTEN_DB_11`，则可以禁用该选项，减小代码大小。
+    - :ref:`CONFIG_ADC_CAL_LUT_ENABLE` - 如果校准 ADC 原始结果时，衰减没有设置成 :c:macro:`ADC_ATTEN_DB_12`，则可以禁用该选项，减小代码大小。
 
 
 .. _adc-minimize-noise:

docs/zh_CN/api-reference/peripherals/adc_oneshot.rst

@@ -105,7 +105,7 @@ ADC 单次转换模式驱动基于 {IDF_TARGET_NAME} SAR ADC 模块实现，不
 
     adc_oneshot_chan_cfg_t config = {
         .bitwidth = ADC_BITWIDTH_DEFAULT,
-        .atten = ADC_ATTEN_DB_11,
+        .atten = ADC_ATTEN_DB_12,
     };
     ESP_ERROR_CHECK(adc_oneshot_config_channel(adc1_handle, EXAMPLE_ADC1_CHAN0, &config));
     ESP_ERROR_CHECK(adc_oneshot_config_channel(adc1_handle, EXAMPLE_ADC1_CHAN1, &config));

examples/peripherals/adc/oneshot_read/main/oneshot_read_main.c

@@ -45,7 +45,7 @@ const static char *TAG = "EXAMPLE";
 #endif
 #endif  //#if EXAMPLE_USE_ADC2
 
-#define EXAMPLE_ADC_ATTEN           ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN           ADC_ATTEN_DB_12
 
 static int adc_raw[2][10];
 static int voltage[2][10];

examples/peripherals/dac/dac_continuous/signal_generator/main/dac_continuous_example_main.c

@@ -38,7 +38,7 @@
 #endif
 #define EXAMPLE_DAC_CHAN0_IO                DAC_CHAN0_GPIO_NUM             // DAC channel 0 io number
 #define EXAMPLE_DAC_CHAN1_IO                DAC_CHAN1_GPIO_NUM             // DAC channel 1 io number
-#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_12
 
 _Static_assert(EXAMPLE_DAC_AMPLITUDE < 256, "The DAC accuracy is 8 bit-width, doesn't support the amplitude beyond 255");
 

examples/peripherals/dac/dac_cosine_wave/main/dac_cosine_example_main.c

@@ -19,7 +19,7 @@
 #define EXAMPLE_DAC_CHAN1_ADC_CHAN          ADC_CHANNEL_7   // GPIO18, same as DAC channel 1
 #define EXAMPLE_ADC_WIDTH                   ADC_WIDTH_BIT_13
 #endif
-#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_12
 
 static void adc_monitor_task(void *args)
 {

examples/peripherals/dac/dac_oneshot/main/dac_oneshot_example_main.c

@@ -19,7 +19,7 @@
 #define EXAMPLE_DAC_CHAN1_ADC_CHAN          ADC_CHANNEL_7   // GPIO18, same as DAC channel 1
 #define EXAMPLE_ADC_WIDTH                   ADC_WIDTH_BIT_13
 #endif
-#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN                   ADC_ATTEN_DB_12
 
 static void adc_monitor_task(void *args)
 {

examples/system/ulp/ulp_fsm/ulp_adc/main/ulp/example_config.h

@@ -8,7 +8,7 @@
 /* Ints are used here to be able to include the file in assembly as well */
 #define EXAMPLE_ADC_CHANNEL     6 // ADC_CHANNEL_6, GPIO34 on ESP32, GPIO7 on ESP32-S3
 #define EXAMPLE_ADC_UNIT        0 // ADC_UNIT_1
-#define EXAMPLE_ADC_ATTEN       3 // ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN       3 // ADC_ATTEN_DB_12
 #define EXAMPLE_ADC_WIDTH       0 // ADC_BITWIDTH_DEFAULT
 
 /* Set low and high thresholds, approx. 1.35V - 1.75V*/

examples/system/ulp/ulp_riscv/adc/main/ulp/example_config.h

@@ -9,7 +9,7 @@
 
 #define EXAMPLE_ADC_CHANNEL     ADC_CHANNEL_0
 #define EXAMPLE_ADC_UNIT        ADC_UNIT_1
-#define EXAMPLE_ADC_ATTEN       ADC_ATTEN_DB_11
+#define EXAMPLE_ADC_ATTEN       ADC_ATTEN_DB_12
 #define EXAMPLE_ADC_WIDTH       ADC_BITWIDTH_DEFAULT
 
 /* Set high threshold, approx. 1.75V*/