kopia lustrzana https://github.com/espressif/esp-idf
307 wiersze
10 KiB
C
307 wiersze
10 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <sys/lock.h>
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#include "rom/ets_sys.h"
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#include "rom/rtc.h"
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#include "soc/dport_reg.h"
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#include "esp_err.h"
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#include "esp_phy_init.h"
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#include "esp_system.h"
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#include "esp_log.h"
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#include "nvs.h"
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#include "nvs_flash.h"
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#include "sdkconfig.h"
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#ifdef CONFIG_PHY_ENABLED
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#include "phy.h"
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#include "phy_init_data.h"
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#include "rtc.h"
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#include "esp_coexist.h"
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static const char* TAG = "phy_init";
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/* Count value to indicate if there is peripheral that has initialized PHY and RF */
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static int s_phy_rf_init_count = 0;
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static bool s_mac_rst_flag = false;
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static _lock_t s_phy_rf_init_lock;
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esp_err_t esp_phy_rf_init(const esp_phy_init_data_t* init_data,
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esp_phy_calibration_mode_t mode, esp_phy_calibration_data_t* calibration_data, bool is_sleep)
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{
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assert((s_phy_rf_init_count <= 1) && (s_phy_rf_init_count >= 0));
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_lock_acquire(&s_phy_rf_init_lock);
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if (s_phy_rf_init_count == 0) {
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if (is_sleep == false) {
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if (s_mac_rst_flag == false) {
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s_mac_rst_flag = true;
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REG_SET_BIT(DPORT_CORE_RST_EN_REG, DPORT_MAC_RST);
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REG_CLR_BIT(DPORT_CORE_RST_EN_REG, DPORT_MAC_RST);
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}
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}
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// Enable WiFi peripheral clock
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SET_PERI_REG_MASK(DPORT_WIFI_CLK_EN_REG, 0x87cf);
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ESP_LOGV(TAG, "register_chipv7_phy, init_data=%p, cal_data=%p, mode=%d",
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init_data, calibration_data, mode);
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phy_set_wifi_mode_only(0);
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register_chipv7_phy(init_data, calibration_data, mode);
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coex_bt_high_prio();
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} else {
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#if CONFIG_SW_COEXIST_ENABLE
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coex_init();
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#endif
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}
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s_phy_rf_init_count++;
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_lock_release(&s_phy_rf_init_lock);
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return ESP_OK;
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}
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esp_err_t esp_phy_rf_deinit(void)
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{
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assert((s_phy_rf_init_count <= 2) && (s_phy_rf_init_count >= 1));
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_lock_acquire(&s_phy_rf_init_lock);
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if (s_phy_rf_init_count == 1) {
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// Disable PHY and RF. TODO: convert this function to another one.
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pm_close_rf();
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// Disable WiFi peripheral clock
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CLEAR_PERI_REG_MASK(DPORT_WIFI_CLK_EN_REG, 0x87cf);
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} else {
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#if CONFIG_SW_COEXIST_ENABLE
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coex_deinit();
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#endif
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}
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s_phy_rf_init_count--;
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_lock_release(&s_phy_rf_init_lock);
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return ESP_OK;
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}
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// PHY init data handling functions
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#if CONFIG_ESP32_PHY_INIT_DATA_IN_PARTITION
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#include "esp_partition.h"
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const esp_phy_init_data_t* esp_phy_get_init_data()
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{
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const esp_partition_t* partition = esp_partition_find_first(
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ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_PHY, NULL);
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if (partition == NULL) {
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ESP_LOGE(TAG, "PHY data partition not found");
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return NULL;
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}
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ESP_LOGD(TAG, "loading PHY init data from partition at offset 0x%x", partition->address);
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size_t init_data_store_length = sizeof(phy_init_magic_pre) +
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sizeof(esp_phy_init_data_t) + sizeof(phy_init_magic_post);
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uint8_t* init_data_store = (uint8_t*) malloc(init_data_store_length);
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if (init_data_store == NULL) {
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ESP_LOGE(TAG, "failed to allocate memory for PHY init data");
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return NULL;
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}
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esp_err_t err = esp_partition_read(partition, 0, init_data_store, init_data_store_length);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "failed to read PHY data partition (%d)", err);
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return NULL;
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}
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if (memcmp(init_data_store, PHY_INIT_MAGIC, sizeof(phy_init_magic_pre)) != 0 ||
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memcmp(init_data_store + init_data_store_length - sizeof(phy_init_magic_post),
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PHY_INIT_MAGIC, sizeof(phy_init_magic_post)) != 0) {
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ESP_LOGE(TAG, "failed to validate PHY data partition");
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return NULL;
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}
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ESP_LOGE(TAG, "PHY data partition validated");
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return (const esp_phy_init_data_t*) (init_data_store + sizeof(phy_init_magic_pre));
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}
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void esp_phy_release_init_data(const esp_phy_init_data_t* init_data)
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{
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free((uint8_t*) init_data - sizeof(phy_init_magic_pre));
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}
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#else // CONFIG_ESP32_PHY_INIT_DATA_IN_PARTITION
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// phy_init_data.h will declare static 'phy_init_data' variable initialized with default init data
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const esp_phy_init_data_t* esp_phy_get_init_data()
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{
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ESP_LOGD(TAG, "loading PHY init data from application binary");
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return &phy_init_data;
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}
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void esp_phy_release_init_data(const esp_phy_init_data_t* init_data)
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{
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// no-op
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}
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#endif // CONFIG_ESP32_PHY_INIT_DATA_IN_PARTITION
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// PHY calibration data handling functions
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static const char* PHY_NAMESPACE = "phy";
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static const char* PHY_CAL_VERSION_KEY = "cal_version";
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static const char* PHY_CAL_MAC_KEY = "cal_mac";
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static const char* PHY_CAL_DATA_KEY = "cal_data";
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static esp_err_t load_cal_data_from_nvs_handle(nvs_handle handle,
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esp_phy_calibration_data_t* out_cal_data);
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static esp_err_t store_cal_data_to_nvs_handle(nvs_handle handle,
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const esp_phy_calibration_data_t* cal_data);
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esp_err_t esp_phy_load_cal_data_from_nvs(esp_phy_calibration_data_t* out_cal_data)
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{
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nvs_handle handle;
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esp_err_t err = nvs_open(PHY_NAMESPACE, NVS_READONLY, &handle);
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if (err != ESP_OK) {
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ESP_LOGD(TAG, "%s: failed to open NVS namespace (%d)", __func__, err);
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return err;
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}
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else {
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err = load_cal_data_from_nvs_handle(handle, out_cal_data);
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nvs_close(handle);
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return err;
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}
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}
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esp_err_t esp_phy_store_cal_data_to_nvs(const esp_phy_calibration_data_t* cal_data)
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{
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nvs_handle handle;
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esp_err_t err = nvs_open(PHY_NAMESPACE, NVS_READWRITE, &handle);
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if (err != ESP_OK) {
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ESP_LOGD(TAG, "%s: failed to open NVS namespace (%d)", __func__, err);
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return err;
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}
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else {
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err = store_cal_data_to_nvs_handle(handle, cal_data);
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nvs_close(handle);
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return err;
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}
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}
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static esp_err_t load_cal_data_from_nvs_handle(nvs_handle handle,
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esp_phy_calibration_data_t* out_cal_data)
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{
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esp_err_t err;
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uint32_t cal_data_version;
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err = nvs_get_u32(handle, PHY_CAL_VERSION_KEY, &cal_data_version);
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if (err != ESP_OK) {
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ESP_LOGD(TAG, "%s: failed to get cal_version (%d)", __func__, err);
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return err;
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}
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uint32_t cal_format_version = phy_get_rf_cal_version() & (~BIT(16));
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ESP_LOGV(TAG, "phy_get_rf_cal_version: %d\n", cal_format_version);
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if (cal_data_version != cal_format_version) {
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ESP_LOGD(TAG, "%s: expected calibration data format %d, found %d",
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__func__, cal_format_version, cal_data_version);
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return ESP_FAIL;
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}
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uint8_t cal_data_mac[6];
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size_t length = sizeof(cal_data_mac);
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err = nvs_get_blob(handle, PHY_CAL_MAC_KEY, cal_data_mac, &length);
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if (err != ESP_OK) {
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ESP_LOGD(TAG, "%s: failed to get cal_mac (%d)", __func__, err);
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return err;
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}
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if (length != sizeof(cal_data_mac)) {
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ESP_LOGD(TAG, "%s: invalid length of cal_mac (%d)", __func__, length);
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return ESP_ERR_INVALID_SIZE;
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}
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uint8_t sta_mac[6];
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esp_efuse_read_mac(sta_mac);
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if (memcmp(sta_mac, cal_data_mac, sizeof(sta_mac)) != 0) {
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ESP_LOGE(TAG, "%s: calibration data MAC check failed: expected " \
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MACSTR ", found " MACSTR,
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__func__, MAC2STR(sta_mac), MAC2STR(cal_data_mac));
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return ESP_FAIL;
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}
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length = sizeof(*out_cal_data);
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err = nvs_get_blob(handle, PHY_CAL_DATA_KEY, out_cal_data, &length);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "%s: failed to get cal_data(%d)", __func__, err);
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return err;
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}
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if (length != sizeof(*out_cal_data)) {
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ESP_LOGD(TAG, "%s: invalid length of cal_data (%d)", __func__, length);
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return ESP_ERR_INVALID_SIZE;
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}
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return ESP_OK;
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}
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static esp_err_t store_cal_data_to_nvs_handle(nvs_handle handle,
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const esp_phy_calibration_data_t* cal_data)
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{
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esp_err_t err;
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uint32_t cal_format_version = phy_get_rf_cal_version() & (~BIT(16));
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ESP_LOGV(TAG, "phy_get_rf_cal_version: %d\n", cal_format_version);
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err = nvs_set_u32(handle, PHY_CAL_VERSION_KEY, cal_format_version);
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if (err != ESP_OK) {
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return err;
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}
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uint8_t sta_mac[6];
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esp_efuse_read_mac(sta_mac);
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err = nvs_set_blob(handle, PHY_CAL_MAC_KEY, sta_mac, sizeof(sta_mac));
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if (err != ESP_OK) {
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return err;
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}
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err = nvs_set_blob(handle, PHY_CAL_DATA_KEY, cal_data, sizeof(*cal_data));
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return err;
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}
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void esp_phy_load_cal_and_init(void)
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{
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#ifdef CONFIG_ESP32_PHY_CALIBRATION_AND_DATA_STORAGE
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nvs_flash_init();
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esp_phy_calibration_mode_t calibration_mode = PHY_RF_CAL_PARTIAL;
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if (rtc_get_reset_reason(0) == DEEPSLEEP_RESET) {
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calibration_mode = PHY_RF_CAL_NONE;
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}
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const esp_phy_init_data_t* init_data = esp_phy_get_init_data();
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if (init_data == NULL) {
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ESP_LOGE(TAG, "failed to obtain PHY init data");
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abort();
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}
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esp_phy_calibration_data_t* cal_data =
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(esp_phy_calibration_data_t*) calloc(sizeof(esp_phy_calibration_data_t), 1);
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if (cal_data == NULL) {
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ESP_LOGE(TAG, "failed to allocate memory for RF calibration data");
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abort();
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}
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esp_err_t err = esp_phy_load_cal_data_from_nvs(cal_data);
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if (err != ESP_OK) {
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ESP_LOGW(TAG, "failed to load RF calibration data, falling back to full calibration");
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calibration_mode = PHY_RF_CAL_FULL;
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}
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esp_phy_rf_init(init_data, calibration_mode, cal_data, false);
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if (calibration_mode != PHY_RF_CAL_NONE && err != ESP_OK) {
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err = esp_phy_store_cal_data_to_nvs(cal_data);
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} else {
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err = ESP_OK;
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}
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esp_phy_release_init_data(init_data);
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free(cal_data); // PHY maintains a copy of calibration data, so we can free this
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#else
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esp_phy_rf_init(NULL, PHY_RF_CAL_NONE, NULL, false);
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#endif
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}
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#endif // CONFIG_PHY_ENABLED
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