https://blog.195481.xyz/tags/peripheral-request/ Recent content in Peripheral-Request on RuChen Hugo -- gohugo.io zh-cn 2510889344@qq.com (RuChen) 2510889344@qq.com (RuChen) All Rights Reserved © RuChen 2025 Wed, 07 Oct 2026 19:21:14 +0800 https://blog.195481.xyz/embedded/embedded-study/l026-dma-transfer-engine-contract/ Wed, 07 Oct 2026 19:21:14 +0800 2510889344@qq.com (RuChen) https://blog.195481.xyz/embedded/embedded-study/l026-dma-transfer-engine-contract/ 以双轨方式建立 DMA 传输契约：Host Fake 验证请求、计数、循环缓冲区和错误路径；STM32F407xx 参考实现把 ADC1 请求落实到 DMA2 Stream0/Channel0，给出 168/84/21 MHz 时钟链、CubeMX 配置、HAL 初始化与回调、LL/寄存器对照和上板验证边界。