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Pull request overview
This PR adds comprehensive bare-metal wolfIP TCP/IP stack support for the STM32H753ZI microcontroller (NUCLEO-H753ZI development board). The implementation includes a complete Ethernet driver, optional TLS 1.3 client support via wolfSSL, and hardware acceleration for cryptographic operations using the STM32H753's HASH/HMAC peripherals. The port is designed for resource-constrained bare-metal environments without RTOS dependencies and includes fixes for STM32H753 HASH peripheral register encoding discrepancies.
Changes:
- Complete bare-metal port including startup code, interrupt vectors, linker script, and newlib syscall stubs
- Ethernet MAC/PHY driver for RMII interface with LAN8742A PHY supporting DHCP and TCP/UDP communications
- Optional TLS 1.3 client with hardware-accelerated cryptography and wolfSSL integration
Reviewed changes
Copilot reviewed 14 out of 15 changed files in this pull request and generated 8 comments.
Show a summary per file
| File | Description |
|---|---|
| src/port/stm32h753/main.c | Main application with TCP echo server, TLS client test, clock/peripheral initialization |
| src/port/stm32h753/stm32h7_eth.c | Ethernet MAC/PHY driver implementation for RMII mode |
| src/port/stm32h753/stm32h7_eth.h | Ethernet driver API declarations |
| src/port/stm32h753/tls_client.c | TLS 1.3 client state machine and wolfSSL integration |
| src/port/stm32h753/tls_client.h | TLS client API declarations |
| src/port/stm32h753/startup.c | Cortex-M7 reset handler and system clock initialization |
| src/port/stm32h753/ivt.c | Interrupt vector table for STM32H753ZI |
| src/port/stm32h753/syscalls.c | Newlib syscall stubs for bare-metal operation |
| src/port/stm32h753/config.h | wolfIP stack configuration parameters |
| src/port/stm32h753/user_settings.h | wolfSSL cryptographic library configuration |
| src/port/stm32h753/stm32_hash_register.h | STM32H753 HASH peripheral register definitions with documented MD5/SHA-1 encoding fix |
| src/port/stm32h753/target.ld | Linker script with memory layout for ETH DMA buffers |
| src/port/stm32h753/Makefile | Build system with optional TLS/HTTPS support |
| src/port/stm32h753/README.md | Comprehensive documentation including setup, building, and troubleshooting |
| .gitignore | Generalized *.elf ignore pattern |
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danielinux
approved these changes
Feb 19, 2026
philljj
approved these changes
Feb 19, 2026
4 tasks
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Summary
Example Boot Output: