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首页ESP32开发完全指南:从硬件到软件编程
"ESP32资料大全包含了乐鑫ESP32芯片的技术参考资料,涵盖了硬件配置和软件编程的全面介绍。这份资料适用于想要了解或开发基于ESP32平台的项目的人群。"
本文档首先介绍了ESP32的重要文档注释,包括ESP8266和ESP32的区别和概述。ESP32作为一款高性能、低功耗的SoC(系统级芯片),具有内置Wi-Fi和蓝牙功能,广泛应用于物联网(IoT)设备。
在ESP32规格部分,详细列出了该芯片的主要特性,如双核32位处理器、丰富的外围接口以及支持多种无线通信协议。此外,还提到了几种常见的ESP32模块,如ESP-WROOM-32、ESP32-DevKitC和ESP-WROVER-KIT,这些模块是开发板的基础,方便用户进行原型设计和测试。
连接到ESP32的章节详细阐述了如何搭建电路,包括使用USB到UART转换器、面包板、电源、多用电表、逻辑探针和逻辑分析仪等工具。物理构造和配置部分指导用户如何为设备 flashed 配置。
对于编程ESP32,文档推荐使用Espressif IoT Development Framework (ESP-IDF),这是一个集成开发环境,支持应用程序的入口点设定、错误处理、构建环境的菜单配置以及添加自定义组件等功能。ESP-IDF的工作原理也进行了详述,帮助开发者理解其内部机制。
编译和调试是开发过程中的关键步骤。ESP32的编译流程包括源码的预处理、编译、链接,以及生成不同类型的二进制文件。文档列举了多个编译工具,如xntensa-esp32-elf-ar、esptool.py、xtensa-esp32-elf-gcc等,这些工具用于构建和优化代码。同时,调试工具如ESP-IDF日志记录和链接调试,有助于开发者定位和解决问题。
加载程序和编程环境的讨论,提供了使用不同IDE(如Eclipse、Visual Studio Code等)进行开发的指导,以及如何通过USB或无线方式将程序上传到ESP32。篇幅较长且内容丰富的ESP32资料大全旨在为开发者提供一个全面的参考指南,帮助他们从零开始掌握ESP32的硬件和软件开发。
xTaskGetTickCount.........................................................................................................588
xTaskGetTickCountFromISR...........................................................................................589
vEventGroupDelete........................................................................................................589
vTaskList.........................................................................................................................589
uxTaskPriorityGet............................................................................................................589
vTaskPrioritySet..............................................................................................................589
vTaskResume.................................................................................................................589
xTaskResumeAll.............................................................................................................590
vTaskResumeFromISR...................................................................................................590
vTaskSuspend................................................................................................................ 590
vTaskSuspendAll............................................................................................................ 590
xTimerChangePeriod......................................................................................................591
xTimerChangePeriodFromISR........................................................................................591
xTimerCreate..................................................................................................................591
xTimerCreateStatic.........................................................................................................592
xTimerDelete..................................................................................................................592
pcTimerGetName............................................................................................................593
xTimerGetExpiryTime.....................................................................................................593
xTimerGetPeriod.............................................................................................................593
pvTimerGetTimerDaemonTaskHandle............................................................................594
pvTimerGetTimerID.........................................................................................................594
xTimerIsTimerActive.......................................................................................................594
xTimerPendFunctionCall.................................................................................................595
xTimerPendFunctionCallFromISR...................................................................................595
xTimerReset...................................................................................................................595
xTimerResetFromISR.....................................................................................................596
vTimerSetTimerID...........................................................................................................596
xTimerStart.....................................................................................................................596
xTimerStartFromISR.......................................................................................................597
xTimerStop..................................................................................................................... 597
xTimerStopFromISR.......................................................................................................597
List Processing...............................................................................................................597
vListInitialise...............................................................................................................597
vListInitialiseItem........................................................................................................597
vListInsert................................................................................................................... 598
vListInsertEnd............................................................................................................598
Sockets APIs....................................................................................................................... 598
accept............................................................................................................................. 598
bind................................................................................................................................. 599
close...............................................................................................................................599
closesocket.....................................................................................................................600
connect........................................................................................................................... 600
fcntl................................................................................................................................. 601
freeaddrinfo....................................................................................................................601
Page 16
getaddrinfo......................................................................................................................601
gethostbyname...............................................................................................................603
gethostbyname_r............................................................................................................603
getpeername................................................................................................................... 604
getsockname..................................................................................................................604
getsockopt......................................................................................................................604
htonl................................................................................................................................ 605
htons............................................................................................................................... 605
inet_ntop.........................................................................................................................605
inet_pton.........................................................................................................................605
ioctlsocket.......................................................................................................................606
listen...............................................................................................................................606
read................................................................................................................................ 606
recv................................................................................................................................. 607
recvfrom..........................................................................................................................607
select..............................................................................................................................608
send................................................................................................................................ 609
sendmsg......................................................................................................................... 609
sendto............................................................................................................................. 609
setsockopt......................................................................................................................610
shutdown........................................................................................................................610
socket.............................................................................................................................611
write................................................................................................................................ 611
writev..............................................................................................................................612
Socket data structures....................................................................................................612
Sockets – struct sockaddr..........................................................................................612
Sockets – struct sockaddr_in.....................................................................................612
Working with WiFi................................................................................................................ 612
DNS..................................................................................................................................... 613
dns_getserver.................................................................................................................614
dns_setserver................................................................................................................. 614
System Functions................................................................................................................614
esp_chip_info.................................................................................................................. 614
esp_cpu_in_ocd_debug_mode.......................................................................................615
esp_deregister_freertos_idle_hook.................................................................................615
esp_deregister_freertos_tick_hook.................................................................................615
esp_efuse_read_mac.....................................................................................................615
esp_get_free_heap_size.................................................................................................616
esp_get_idf_version........................................................................................................616
esp_ipc_call....................................................................................................................616
esp_ipc_call_blocking.....................................................................................................617
esp_random....................................................................................................................617
Page 17
esp_register_freertos_idle_hook.....................................................................................617
esp_register_freertos_idle_hook_for_cpu.......................................................................617
esp_register_freertos_tick_hook.....................................................................................617
esp_register_freertos_tick_hook_for_cpu.......................................................................618
esp_restart......................................................................................................................618
esp_sleep_get_wakeup_cause.......................................................................................618
system_rtc_mem_write...................................................................................................618
rtc_get_reset_reason......................................................................................................619
software_reset................................................................................................................ 619
software_reset_cpu........................................................................................................619
system_deep_sleep........................................................................................................620
system_get_time.............................................................................................................620
system_restore............................................................................................................... 620
system_rtc_mem_read...................................................................................................621
system_rtc_mem_write...................................................................................................621
system_rtc_mem_read...................................................................................................621
WiFi..................................................................................................................................... 621
esp_event_loop_init........................................................................................................621
esp_event_loop_set_cb..................................................................................................622
esp_wifi_ap_get_sta_list.................................................................................................622
esp_wifi_clear_fast_connect...........................................................................................622
esp_wifi_connect............................................................................................................622
esp_wifi_deauth_sta.......................................................................................................623
esp_wifi_deinit................................................................................................................ 623
esp_wifi_disconnect........................................................................................................623
esp_wifi_free_station_list................................................................................................624
esp_wifi_get_auto_connect............................................................................................624
esp_wifi_get_bandwidth..................................................................................................624
esp_wifi_get_channel.....................................................................................................625
esp_wifi_get_config........................................................................................................625
esp_wifi_get_country......................................................................................................625
esp_wifi_get_mac...........................................................................................................626
esp_wifi_get_mode.........................................................................................................626
esp_wifi_get_promiscuous..............................................................................................627
esp_wifi_get_protocol.....................................................................................................627
esp_wifi_get_ps..............................................................................................................627
esp_wifi_get_station_list.................................................................................................628
esp_wifi_init.................................................................................................................... 628
esp_wifi_restore.............................................................................................................. 629
esp_wifi_reg_rxcb...........................................................................................................629
esp_wifi_scan_get_ap_records.......................................................................................629
esp_wifi_scan_get_ap_num...........................................................................................630
esp_wifi_scan_start........................................................................................................630
esp_wifi_scan_stop........................................................................................................631
Page 18
esp_wifi_set_auto_connect.............................................................................................631
esp_wifi_set_bandwidth..................................................................................................632
esp_wifi_set_channel......................................................................................................632
esp_wifi_set_config........................................................................................................632
esp_wifi_set_country......................................................................................................634
esp_wifi_set_mac...........................................................................................................635
esp_wifi_set_mode.........................................................................................................635
esp_wifi_set_promiscuous_rx_cb...................................................................................636
esp_wifi_set_promiscuous..............................................................................................636
esp_wifi_set_protocol.....................................................................................................636
esp_wifi_set_ps..............................................................................................................637
esp_wifi_set_storage......................................................................................................637
esp_wifi_set_vendor_ie..................................................................................................638
esp_wifi_set_vendor_ie_cb.............................................................................................638
esp_wifi_sta_get_ap_info...............................................................................................638
esp_wifi_start..................................................................................................................638
esp_wifi_stop..................................................................................................................639
WiFi WPS............................................................................................................................ 639
wifi_wps_enable.............................................................................................................639
wifi_wps_disable.............................................................................................................639
wifi_wps_start................................................................................................................. 640
wifi_set_wps_cb.............................................................................................................. 640
mbed TLS............................................................................................................................ 640
mbedtls_ctr_drbg_free....................................................................................................640
mbedtls_ctr_drbg_init......................................................................................................640
mbedtls_ctr_drbg_seed..................................................................................................640
mbedtls_debug_set_threshold........................................................................................641
mbedtls_entropy_free.....................................................................................................641
mbedtls_entropy_init.......................................................................................................642
mbedtls_net_accept........................................................................................................642
mbedtls_net_bind...........................................................................................................642
mbedtls_net_connect......................................................................................................643
mbedtls_net_free............................................................................................................643
mbedtls_net_init.............................................................................................................. 643
mbedtls_net_recv...........................................................................................................644
mbedtls_net_recv_timeout..............................................................................................644
mbedtls_net_send.......................................................................................................... 644
mbedtls_net_set_block...................................................................................................644
mbedtls_net_set_nonblock.............................................................................................644
mbedtls_pk_parse_key...................................................................................................645
mbedtls_printf................................................................................................................. 645
mbedtls_sha1.................................................................................................................645
Page 19
mbedtls_ssl_close_notify................................................................................................645
mbedtls_ssl_conf_authmode..........................................................................................646
mbedtls_ssl_conf_ca_chain............................................................................................646
mbedtls_ssl_conf_dbg....................................................................................................646
mbedtls_ssl_conf_rng.....................................................................................................647
mbedtls_ssl_config_defaults...........................................................................................647
mbedtls_ssl_config_free.................................................................................................647
mbedtls_ssl_config_init...................................................................................................647
mbedtls_ssl_free............................................................................................................. 648
mbedtls_ssl_get_verify_result.........................................................................................648
mbedtls_ssl_handshake.................................................................................................648
mbedtls_ssl_init..............................................................................................................648
mbedtls_ssl_read............................................................................................................648
mbedtls_ssl_session_reset.............................................................................................649
mbedtls_ssl_set_bio.......................................................................................................649
mbedtls_ssl_set_hostname............................................................................................650
mbedtls_ssl_setup..........................................................................................................650
mbedtls_ssl_write...........................................................................................................650
mbedtls_strerror..............................................................................................................650
mbedtls_x509_crt_init.....................................................................................................651
mbedtls_x509_crt_parse.................................................................................................651
mbedtls_x509_crt_veryify_info.......................................................................................651
Bluetooth LE........................................................................................................................651
esp_bt_uuid_t.................................................................................................................652
esp_attr_value_t.............................................................................................................652
esp_gatt_id_t.................................................................................................................. 652
esp_gatt_srvc_id_t..........................................................................................................653
esp_gatt_status_t...........................................................................................................653
esp_gattc_char_elem_t...................................................................................................655
esp_gattc_db_elem_t.....................................................................................................655
esp_gattc_descr_elem_t.................................................................................................655
esp_gattc_service_elem_t..............................................................................................656
esp_ble_gap_config_adv_data.......................................................................................656
esp_ble_gap_config_adv_data_raw...............................................................................658
esp_ble_gap_config_scan_rsp_data_raw.......................................................................658
esp_ble_gap_config_local_privacy.................................................................................658
esp_ble_gap_disconnect................................................................................................659
esp_ble_gap_get_whitelist_size.....................................................................................659
esp_ble_gap_read_rssi...................................................................................................659
esp_ble_gap_register_callback.......................................................................................659
ESP_GAP_BLE_ADD_WHITELIST_COMPLETE_EVT.............................................659
ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT..............................................660
ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT....................................660
ESP_GAP_BLE_ADV_START_COMPLETE_EVT.....................................................660
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