hpm_gpio.hpp File Reference

HPM GPIO 驱动适配头文件 / Adapter header for the HPM GPIO driver. More...

#include "gpio.hpp"
#include "hpm_gpio_drv.h"
#include "hpm_plic_drv.h"
#include "hpm_soc.h"

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Data Structures
class	LibXR::HPMGPIO
	HPM 平台 GPIO 驱动实现 / GPIO driver implementation for HPM platform. More...
struct	LibXR::HPMGPIO::PortIrqRouteState
	端口级 IRQ 路由状态 / Shared port-level IRQ routing state. More...

Namespaces
namespace	LibXR
	LibXR 命名空间

Functions
void	libxr_hpm_gpio_check_interrupt (uint32_t port)
	GPIO 中断分发的 C 接口 / C entry for GPIO interrupt dispatch.

Detailed Description

HPM GPIO 驱动适配头文件 / Adapter header for the HPM GPIO driver.

本文件在 GPIO_Type 上实现 LibXR::GPIO，通过 HPM SDK hpm_gpio_drv 完成引脚读写、方向配置、中断触发模式配置和中断标志分发。当前实现使用同步 GPIO API；中断由板级 IRQ handler 调用 libxr_hpm_gpio_check_interrupt() 后按 port/pin 映射分发。HPM5301 的 GPIO0_A/B/X/Y IRQ 是端口级 PLIC 路由，因此同一 port 上多个 pin 会共享同一 IRQ enable/disable 计数。端口表大小 按当前 SDK 头文件暴露的 GPIO_DI_GPIO* 宏推导，避免为不同 HPM 系列复制驱动文件。

This file implements LibXR::GPIO on top of GPIO_Type using the HPM SDK hpm_gpio_drv APIs for pin read/write, direction setup, interrupt trigger setup, and interrupt-flag dispatch. The current implementation uses synchronous GPIO APIs; interrupts are dispatched after the board IRQ handler calls libxr_hpm_gpio_check_interrupt(). HPM5301 routes GPIO0_A/B/X/Y IRQs per port through PLIC, so multiple pins on the same port share one IRQ enable/disable reference count. The dispatch table size is derived from the GPIO_DI_GPIO* macros exposed by the active SDK headers to avoid per-series driver forks.

Definition in file hpm_gpio.hpp.

Function Documentation

libxr_hpm_gpio_check_interrupt()

void libxr_hpm_gpio_check_interrupt

(

uint32_t

port

)

GPIO 中断分发的 C 接口 / C entry for GPIO interrupt dispatch.

Parameters

port	GPIO 端口号 / GPIO port index.

GPIO 中断分发的 C 接口 / C entry for GPIO interrupt dispatch.

Parameters

port	GPIO 端口号 / GPIO port index.

Definition at line 464 of file hpm_gpio.cpp.

{
  HPMGPIO::CheckInterrupt(port);
}