tags: [source-summary] type: source source: "STM32 Lower Part Code Accuracy Audit: Notes 13-20" author: "Code Audit" date: 2026-07-16

created: 2026-07-16

STM32 Lower Part Notes 13-20: Code Accuracy Audit Report

Summary

Comprehensive audit comparing raw Joplin notes for STM32 lower-part topics (13-20) against actual source files at F:\Baidu\尚硅谷\尚硅谷嵌入式技术STM32单片机\下部-高级篇\3-代码\stm32\.

Overall Findings

Note	Topic	Accuracy	Issues
[[Note 13 CAN]]	CAN	95%	1 critical path error
[[Note 14 Ethernet]]	Ethernet	95%	1 critical path error
[[Note 15 WiFi]]	WiFi	90%	1 ambiguity
[[Note 16 BLE]]	BLE	99%	None significant
[[Note 17 LoRa]]	LoRa	98%	None significant
[[Note 18 Power]]	Power	95%	PVD code not in projects
[[Note 19 BKP RTC]]	BKP/RTC	99%	None significant
[[Note 20 Watchdog]]	Watchdog	90%	1 timeout calculation error

Critical Issues Found

Issue 1: Double `stm32/stm32/` Path Prefix (Notes 13-14)

Raw notes use paths like stm32/stm32/01_can_test_register/... with duplicated stm32/ prefix. Correct: 01_can_test_register/...

Issue 2: IWDG Timeout Formula Error (Note 20)

Raw note shows Tout = 2500 × 64 × 4 / 40000 = 16s — the extra ×4 is wrong. Correct: Tout = 2500 × 64 / 40000 = 4s

Issue 3: Project Ambiguity (Note 15)

TCP server functionality is in project 11 (11_wifi_tcp_server_hal), not project 10 (10_wifi_test_hal, which only sends AT+GMR).

Issue 4: PVD Code Not in Projects (Note 18)

PVD configuration described in note does not exist in any of the 6 power project main.c files (15-20).

File Verification

Critical File	Lines	Status
`01_can_test_register/Hardware/CAN/can.c`	200	✅ All register ops match
`01_can_test_register/Hardware/CAN/can.h`	30	✅ RxMsg struct matches
`02_can_test_hal/Core/Src/can.c`	195	✅ HAL init/filter/send/recv match
`05_ethernet_test_register/Hardware/SPI/spi.c`	93	✅ SPI2 config matches
`05_ethernet_test_register/Interface/Ethernet/eth.c`	85	✅ W5500 init matches
`10_wifi_test_hal/Interface/ESP32/esp32.c`	52	✅ AT cmd driver matches
`12_ble_server_hal/App/BLE/ble.c`	127	✅ All AT sequences match
`13_lora_node_hal/Interface/LoRa/lora.c`	394	✅ LLCC68 driver matches
`15_lowpower_sleep_register/User/main.c`	49	✅ Sleep mode code matches
`25_rtc_calendar_register/Hardware/RTC/rtc.c`	139	✅ RTC register ops match
`27_iwdg_test_register/Hardware/IWDG/iwdg.c`	33	✅ IWDG register ops match

Wiki Notes Created

[[Note 13 CAN]]
[[Note 14 Ethernet]]
[[Note 15 WiFi]]
[[Note 16 BLE]]
[[Note 17 LoRa]]
[[Note 18 Power]]
[[Note 19 BKP RTC]]
[[Note 20 Watchdog]]

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