libxr  1.0
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ch32_gpio.hpp
1#pragma once
2
3#include "gpio.hpp"
4#include "libxr.hpp"
5
6#include DEF2STR(LIBXR_CH32_CONFIG_FILE)
7
8namespace LibXR
9{
10
11typedef enum
12{
13#if defined(GPIOA)
14 CH32_GPIOA,
15#endif
16#if defined(GPIOB)
17 CH32_GPIOB,
18#endif
19#if defined(GPIOC)
20 CH32_GPIOC,
21#endif
22#if defined(GPIOD)
23 CH32_GPIOD,
24#endif
25#if defined(GPIOE)
26 CH32_GPIOE,
27#endif
28#if defined(GPIOF)
29 CH32_GPIOF,
30#endif
31#if defined(GPIOG)
32 CH32_GPIOG,
33#endif
34#if defined(GPIOH)
35 CH32_GPIOH,
36#endif
37#if defined(GPIOI)
38 CH32_GPIOI,
39#endif
40 CH32_GPIO_NUMBER
41} ch32_gpio_group_t;
42
43static uint32_t CH32GetGPIOPeriph(GPIO_TypeDef* port)
44{
45 if (false)
46 {
47 }
48#if defined(GPIOA)
49 else if (port == GPIOA)
50 return RCC_APB2Periph_GPIOA;
51#endif
52#if defined(GPIOB)
53 else if (port == GPIOB)
54 return RCC_APB2Periph_GPIOB;
55#endif
56#if defined(GPIOC)
57 else if (port == GPIOC)
58 return RCC_APB2Periph_GPIOC;
59#endif
60#if defined(GPIOD)
61 else if (port == GPIOD)
62 return RCC_APB2Periph_GPIOD;
63#endif
64#if defined(GPIOE)
65 else if (port == GPIOE)
66 return RCC_APB2Periph_GPIOE;
67#endif
68#if defined(GPIOF)
69 else if (port == GPIOF)
70 return RCC_APB2Periph_GPIOF;
71#endif
72#if defined(GPIOG)
73 else if (port == GPIOG)
74 return RCC_APB2Periph_GPIOG;
75#endif
76#if defined(GPIOH)
77 else if (port == GPIOH)
78 return RCC_APB2Periph_GPIOH;
79#endif
80#if defined(GPIOI)
81 else if (port == GPIOI)
82 return RCC_APB2Periph_GPIOI;
83#endif
84 return 0;
85}
86
87class CH32GPIO : public GPIO
88{
89 public:
90 CH32GPIO(GPIO_TypeDef* port, uint16_t pin,
91 GPIO::Direction direction = GPIO::Direction::OUTPUT_PUSH_PULL,
92 GPIO::Pull pull = GPIO::Pull::NONE, IRQn_Type irq = NonMaskableInt_IRQn)
93 : port_(port), pin_(pin), irq_(irq)
94 {
95 if (irq_ != NonMaskableInt_IRQn)
96 {
97 NVIC_EnableIRQ(irq_);
98 map[GetEXTIID(pin)] = this;
99 }
100
101 RCC_APB2PeriphClockCmd(CH32GetGPIOPeriph(port_), ENABLE);
102
103 GPIO_InitTypeDef gpio_init = {};
104 gpio_init.GPIO_Pin = pin_;
105 gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
106
107 switch (direction)
108 {
109 case Direction::RISING_INTERRUPT:
110 case Direction::FALL_INTERRUPT:
111 case Direction::FALL_RISING_INTERRUPT:
112 case Direction::INPUT:
113 gpio_init.GPIO_Mode = (pull == Pull::UP) ? GPIO_Mode_IPU
114 : (pull == Pull::DOWN) ? GPIO_Mode_IPD
115 : GPIO_Mode_IN_FLOATING;
116 break;
117 case Direction::OUTPUT_PUSH_PULL:
118 gpio_init.GPIO_Mode = GPIO_Mode_Out_PP;
119 break;
120 case Direction::OUTPUT_OPEN_DRAIN:
121 gpio_init.GPIO_Mode = GPIO_Mode_Out_OD;
122 break;
123 }
124
125 GPIO_Init(port_, &gpio_init);
126
127 switch (direction)
128 {
129 case Direction::RISING_INTERRUPT:
130 ConfigureEXTI(EXTI_Trigger_Rising);
131 break;
132 case Direction::FALL_INTERRUPT:
133 ConfigureEXTI(EXTI_Trigger_Falling);
134 break;
135 case Direction::FALL_RISING_INTERRUPT:
136 ConfigureEXTI(EXTI_Trigger_Rising_Falling);
137 break;
138 default:
139 break;
140 }
141 }
142
143 bool Read() override { return GPIO_ReadInputDataBit(port_, pin_) == Bit_SET; }
144
145 ErrorCode Write(bool value) override
146 {
147 if (value)
148 GPIO_SetBits(port_, pin_);
149 else
150 GPIO_ResetBits(port_, pin_);
151 return ErrorCode::OK;
152 }
153
154 ErrorCode EnableInterrupt() override
155 {
156 EXTI->INTENR |= (1 << GetEXTIID(pin_));
157 return ErrorCode::OK;
158 }
159
160 ErrorCode DisableInterrupt() override
161 {
162 EXTI->INTENR &= ~(1 << GetEXTIID(pin_));
163 return ErrorCode::OK;
164 }
165
166 ErrorCode SetConfig(Configuration config) override
167 {
168 GPIO_InitTypeDef gpio_init = {};
169 gpio_init.GPIO_Pin = pin_;
170 gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
171
172 switch (config.direction)
173 {
174 case Direction::INPUT:
175 gpio_init.GPIO_Mode = (config.pull == Pull::UP) ? GPIO_Mode_IPU
176 : (config.pull == Pull::DOWN) ? GPIO_Mode_IPD
177 : GPIO_Mode_IN_FLOATING;
178 break;
179 case Direction::OUTPUT_PUSH_PULL:
180 gpio_init.GPIO_Mode = GPIO_Mode_Out_PP;
181 break;
182 case Direction::OUTPUT_OPEN_DRAIN:
183 gpio_init.GPIO_Mode = GPIO_Mode_Out_OD;
184 break;
185 case Direction::RISING_INTERRUPT:
186 case Direction::FALL_INTERRUPT:
187 case Direction::FALL_RISING_INTERRUPT:
188 gpio_init.GPIO_Mode = GPIO_Mode_IN_FLOATING;
189 break;
190 }
191
192 GPIO_Init(port_, &gpio_init);
193
194 switch (config.direction)
195 {
196 case Direction::RISING_INTERRUPT:
197 ConfigureEXTI(EXTI_Trigger_Rising);
198 break;
199 case Direction::FALL_INTERRUPT:
200 ConfigureEXTI(EXTI_Trigger_Falling);
201 break;
202 case Direction::FALL_RISING_INTERRUPT:
203 ConfigureEXTI(EXTI_Trigger_Rising_Falling);
204 break;
205 default:
206 break;
207 }
208
209 return ErrorCode::OK;
210 }
211
212 void OnInterrupt()
213 {
214 if (!callback_.Empty())
215 {
216 callback_.Run(true);
217 }
218 }
219
220 static void CheckInterrupt(uint32_t line)
221 {
222 if (EXTI_GetITStatus(line) != RESET)
223 {
224 EXTI_ClearITPendingBit(line);
225 map[GetEXTIID(line)]->OnInterrupt();
226 }
227 }
228
229 static inline CH32GPIO* map[16] = {nullptr};
230
231 private:
232 GPIO_TypeDef* port_;
233 uint16_t pin_;
234 IRQn_Type irq_;
235
236 void ConfigureEXTI(EXTITrigger_TypeDef trigger)
237 {
238 EXTI_InitTypeDef exti = {};
239 uint8_t pin_source = __builtin_ctz(pin_);
240 uint8_t port_source = 0xFF;
241
242#if defined(GPIOA)
243 if (port_ == GPIOA) port_source = GPIO_PortSourceGPIOA;
244#endif
245#if defined(GPIOB)
246 else if (port_ == GPIOB)
247 {
248 port_source = GPIO_PortSourceGPIOB;
249 }
250#endif
251#if defined(GPIOC)
252 else if (port_ == GPIOC)
253 {
254 port_source = GPIO_PortSourceGPIOC;
255 }
256#endif
257#if defined(GPIOD)
258 else if (port_ == GPIOD)
259 {
260 port_source = GPIO_PortSourceGPIOD;
261 }
262#endif
263#if defined(GPIOE)
264 else if (port_ == GPIOE)
265 {
266 port_source = GPIO_PortSourceGPIOE;
267 }
268#endif
269#if defined(GPIOF)
270 else if (port_ == GPIOF)
271 {
272 port_source = GPIO_PortSourceGPIOF;
273 }
274#endif
275#if defined(GPIOG)
276 else if (port_ == GPIOG)
277 {
278 port_source = GPIO_PortSourceGPIOG;
279 }
280#endif
281#if defined(GPIOH)
282 else if (port_ == GPIOH)
283 {
284 port_source = GPIO_PortSourceGPIOH;
285 }
286#endif
287#if defined(GPIOI)
288 else if (port_ == GPIOI)
289 {
290 port_source = GPIO_PortSourceGPIOI;
291 }
292#endif
293
294 ASSERT(port_source != 0xFF);
295
296 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
297 GPIO_EXTILineConfig(port_source, pin_source);
298
299 exti.EXTI_Line = 1 << pin_source;
300 exti.EXTI_Mode = EXTI_Mode_Interrupt;
301 exti.EXTI_Trigger = trigger;
302 exti.EXTI_LineCmd = ENABLE;
303 EXTI_Init(&exti);
304
305 NVIC_EnableIRQ(irq_);
306 }
307
308 static uint8_t GetEXTIID(uint16_t pin) { return __builtin_ctz(pin); }
309};
310
311} // namespace LibXR
LibXR::CH32GPIO::EnableInterrupt
ErrorCode EnableInterrupt() override
使能 GPIO 引脚中断。Enables the GPIO pin interrupt.
Definition ch32_gpio.hpp:154
LibXR::CH32GPIO::SetConfig
ErrorCode SetConfig(Configuration config) override
配置 GPIO 引脚参数。Configures the GPIO pin settings.
Definition ch32_gpio.hpp:166
LibXR::CH32GPIO::Write
ErrorCode Write(bool value) override
写入 GPIO 引脚状态。Writes the GPIO pin state.
Definition ch32_gpio.hpp:145
LibXR::CH32GPIO::Read
bool Read() override
读取 GPIO 引脚状态。Reads the GPIO pin state.
Definition ch32_gpio.hpp:143
LibXR::CH32GPIO::DisableInterrupt
ErrorCode DisableInterrupt() override
禁用 GPIO 引脚中断。Disables the GPIO pin interrupt.
Definition ch32_gpio.hpp:160
LibXR::Callback::Run
void Run(bool in_isr, PassArgs &&...args) const
执行回调函数，并传递参数。 Executes the callback function, passing the arguments.
Definition libxr_cb.hpp:208
LibXR::Callback::Empty
bool Empty() const
检查回调是否为空。 Checks if the callback is empty.
Definition libxr_cb.hpp:223
LibXR::GPIO
通用输入输出（GPIO）接口类。General Purpose Input/Output (GPIO) interface class.
Definition gpio.hpp:13
LibXR::GPIO::callback_
Callback callback_
GPIO 事件的回调函数。Callback function for GPIO events.
Definition gpio.hpp:56
LibXR::GPIO::Direction
Direction
定义 GPIO 引脚的方向类型。Defines the direction types for GPIO pins.
Definition gpio.hpp:20
LibXR::GPIO::Direction::OUTPUT_PUSH_PULL
@ OUTPUT_PUSH_PULL
推挽输出模式。Push-pull output mode.
LibXR::GPIO::Direction::RISING_INTERRUPT
@ RISING_INTERRUPT
上升沿中断模式。Rising edge interrupt mode.
LibXR::GPIO::Direction::FALL_RISING_INTERRUPT
@ FALL_RISING_INTERRUPT
双沿触发中断模式。Both edge interrupt mode.
LibXR::GPIO::Direction::OUTPUT_OPEN_DRAIN
@ OUTPUT_OPEN_DRAIN
开漏输出模式。Open-drain output mode.
LibXR::GPIO::Direction::INPUT
@ INPUT
输入模式。Input mode.
LibXR::GPIO::Direction::FALL_INTERRUPT
@ FALL_INTERRUPT
下降沿中断模式。Falling edge interrupt mode.
LibXR::GPIO::Pull
Pull
定义 GPIO 引脚的上拉/下拉模式。Defines the pull-up/pull-down configurations for GPIO pins.
Definition gpio.hpp:35
LibXR::GPIO::Pull::NONE
@ NONE
无上拉或下拉。No pull-up or pull-down.
LibXR::GPIO::Pull::DOWN
@ DOWN
下拉模式。Pull-down mode.
LibXR::GPIO::Pull::UP
@ UP
上拉模式。Pull-up mode.
LibXR
LibXR 命名空间
Definition ch32_gpio.hpp:9
LibXR::GPIO::Configuration
存储 GPIO 配置参数的结构体。Structure storing GPIO configuration parameters.
Definition gpio.hpp:46
LibXR::GPIO::Configuration::pull
Pull pull
GPIO 上拉/下拉配置。GPIO pull-up/pull-down configuration.
Definition gpio.hpp:48
LibXR::GPIO::Configuration::direction
Direction direction
GPIO 引脚方向。GPIO pin direction.
Definition gpio.hpp:47