171 lines
3.8 KiB
C++
171 lines
3.8 KiB
C++
#include "Kernel\Sys.h"
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#include "Kernel\Interrupt.h"
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#include "Device\Port.h"
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#include "Platform\stm32.h"
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static const byte PORT_IRQns[] = {
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EXTI0_1_IRQn, EXTI0_1_IRQn, // 基础
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EXTI2_3_IRQn, EXTI2_3_IRQn, // 基础
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EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn,
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EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn // EXTI15_10
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};
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/******************************** Port ********************************/
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// 端口基本功能
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#define REGION_Port 1
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#ifdef REGION_Port
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extern GPIO_TypeDef* IndexToGroup(byte index);
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void OpenPeriphClock(Pin pin, bool flag)
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{
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int gi = pin >> 4;
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FunctionalState fs = flag ? ENABLE : DISABLE;
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RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOAEN << gi, fs);
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}
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void Port::AFConfig(GPIO_AF GPIO_AF) const
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{
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assert(Opened, "打开后才能配置AF");
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GPIO_PinAFConfig(IndexToGroup(_Pin >> 4), _Pin & 0x000F, GPIO_AF);
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}
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#endif
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/******************************** OutputPort ********************************/
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// 输出端口
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#define REGION_Output 1
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#ifdef REGION_Output
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void OutputPort::OpenPin()
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{
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assert(Speed == 2 || Speed == 10 || Speed == 50, "Speed");
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auto gpio = (GPIO_InitTypeDef*)&State;
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switch(Speed)
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{
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case 2: gpio->GPIO_Speed = GPIO_Speed_2MHz; break;
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case 10: gpio->GPIO_Speed = GPIO_Speed_10MHz; break;
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case 50: gpio->GPIO_Speed = GPIO_Speed_50MHz; break;
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}
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gpio->GPIO_Mode = GPIO_Mode_OUT;
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gpio->GPIO_OType = OpenDrain ? GPIO_OType_OD : GPIO_OType_PP;
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GPIO_Init(IndexToGroup(_Pin >> 4), gpio);
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}
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/******************************** AlternatePort ********************************/
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void AlternatePort::OpenPin()
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{
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auto gpio = (GPIO_InitTypeDef*)&State;
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gpio->GPIO_Mode = GPIO_Mode_AF;
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gpio->GPIO_OType = OpenDrain ? GPIO_OType_OD : GPIO_OType_PP;
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GPIO_Init(IndexToGroup(_Pin >> 4), gpio);
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}
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#endif
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/******************************** InputPort ********************************/
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// 输入端口
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#define REGION_Input 1
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#ifdef REGION_Input
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extern int Bits2Index(ushort value);
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extern bool InputPort_HasEXTI(int line, const InputPort& port);
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extern void GPIO_ISR(int num);
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extern void SetEXIT(int pinIndex, bool enable, InputPort::Trigger mode);
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void InputPort::OpenPin()
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{
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auto gpio = (GPIO_InitTypeDef*)&State;
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gpio->GPIO_Mode = GPIO_Mode_IN;
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//gpio->GPIO_OType = !Floating ? GPIO_OType_OD : GPIO_OType_PP;
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GPIO_Init(IndexToGroup(_Pin >> 4), gpio);
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}
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// 是否独享中断号
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static bool IsOnlyExOfInt(const InputPort& port, int idx)
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{
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int s=0, e=0;
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if(idx <= 1)
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{
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s = 0;
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e = 1;
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}
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else if(idx <= 3)
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{
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s = 2;
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e = 3;
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}
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else if(idx <= 15)
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{
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s = 4;
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e = 15;
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}
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for(int i = s; i <= e; i++)
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if(InputPort_HasEXTI(i, port)) return false;
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return true;
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}
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void InputPort_CloseEXTI(const InputPort& port)
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{
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Pin pin = port._Pin;
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int idx = Bits2Index(1 << (pin & 0x0F));
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SetEXIT(idx, false, InputPort::Both);
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if(!IsOnlyExOfInt(port, idx))return;
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Interrupt.Deactivate(PORT_IRQns[idx]);
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}
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void EXTI_IRQHandler(ushort num, void* param)
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{
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uint pending = EXTI->PR & EXTI->IMR;
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for(int i=0; i < 16 && pending != 0; i++, pending >>= 1)
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{
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if (pending & 1) GPIO_ISR(i);
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}
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}
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void InputPort_OpenEXTI(InputPort& port)
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{
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Pin pin = port._Pin;
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byte gi = pin >> 4;
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int idx = Bits2Index(1 << (pin & 0x0F));
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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SYSCFG_EXTILineConfig(gi, idx);
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SetEXIT(idx, true, InputPort::Both);
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// 打开并设置EXTI中断为低优先级
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Interrupt.SetPriority(PORT_IRQns[idx], 1);
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Interrupt.Activate(PORT_IRQns[idx], EXTI_IRQHandler, &port);
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}
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#endif
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/******************************** AnalogInPort ********************************/
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void AnalogInPort::OpenPin()
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{
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auto gpio = (GPIO_InitTypeDef*)&State;
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gpio->GPIO_Mode = GPIO_Mode_AN;
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//gpio->GPIO_OType = !Floating ? GPIO_OType_OD : GPIO_OType_PP;
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GPIO_Init(IndexToGroup(_Pin >> 4), gpio);
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}
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