755 lines
16 KiB
C++
755 lines
16 KiB
C++
#include "Port.h"
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#if defined(STM32F1) || defined(STM32F4)
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static const int PORT_IRQns[] = {
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EXTI0_IRQn, EXTI1_IRQn, EXTI2_IRQn, EXTI3_IRQn, EXTI4_IRQn, // 5个基础的
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EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn, // EXTI9_5
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EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn // EXTI15_10
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};
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#elif defined(STM32F0)
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static const int 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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#endif
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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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Port::Port()
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{
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_Pin = P0;
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Group = NULL;
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Mask = 0;
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Opened = false;
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#if DEBUG
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Debug = true;
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#endif
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}
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#ifndef TINY
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Port::~Port()
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{
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Close();
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}
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#endif
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String& Port::ToStr(String& str) const
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{
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str.SetAt(0, 'P');
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if(_Pin == P0)
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{
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str.SetAt(1, '0');
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}
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else
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{
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str.SetAt(1, 'A' + (_Pin >> 4));
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str.Append(_Pin & 0x0F);
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}
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return str;
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}
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// 单一引脚初始化
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Port& Port::Set(Pin pin)
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{
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// 如果引脚不变，则不做处理
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if(pin == _Pin) return *this;
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#ifndef TINY
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// 释放已有引脚的保护
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if(_Pin != P0) Close();
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#endif
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_Pin = pin;
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if(_Pin != P0)
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{
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Group = IndexToGroup(pin >> 4);
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Mask = 1 << (pin & 0x0F);
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}
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else
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{
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Group = NULL;
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Mask = 0;
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}
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//if(_Pin != P0) Open();
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return *this;
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}
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bool Port::Empty() const
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{
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if(_Pin != P0) return false;
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if(Group == NULL || Mask == 0) return true;
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return false;
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}
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void Port::Clear()
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{
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Group = NULL;
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_Pin = P0;
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Mask = 0;
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}
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// 确定配置,确认用对象内部的参数进行初始化
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bool Port::Open()
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{
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if(_Pin == P0) return false;
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if(Opened) return true;
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// 先打开时钟才能配置
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int gi = _Pin >> 4;
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#ifdef STM32F0
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RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOAEN << gi, ENABLE);
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#elif defined(STM32F1)
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA << gi, ENABLE);
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#elif defined(STM32F4)
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA << gi, ENABLE);
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#endif
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#if DEBUG
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// 保护引脚
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if(Debug) Show();
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Reserve(_Pin, true, Debug);
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#endif
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GPIO_InitTypeDef gpio;
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// 特别要慎重，有些结构体成员可能因为没有初始化而酿成大错
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GPIO_StructInit(&gpio);
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OnOpen(gpio);
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GPIO_Init(Group, &gpio);
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#if DEBUG
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if(Debug) debug_printf("\r\n");
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#endif
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Opened = true;
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return true;
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}
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void Port::Close()
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{
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if(!Opened) return;
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if(_Pin == P0) return;
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OnClose();
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#if DEBUG
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// 保护引脚
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if(Debug) Show();
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Reserve(_Pin, false, Debug);
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if(Debug) debug_printf("\r\n");
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#endif
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Opened = false;
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}
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void Port::OnClose()
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{
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int gi = _Pin >> 4;
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#ifdef STM32F0
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RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOAEN << gi, DISABLE);
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#elif defined(STM32F1)
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA << gi, DISABLE);
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#elif defined(STM32F4)
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA << gi, DISABLE);
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#endif
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}
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void Port::OnOpen(GPIO_InitTypeDef& gpio)
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{
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gpio.GPIO_Pin = Mask;
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#ifdef STM32F1
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// PA15/PB3/PB4 需要关闭JTAG
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switch(_Pin)
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{
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case PA15:
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case PB3:
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case PB4:
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{
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debug_printf("关闭 JTAG 为 P%c%d", _PIN_NAME(_Pin));
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// PA15是jtag接口中的一员 想要使用 必须开启remap
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
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break;
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}
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}
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#endif
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}
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#if defined(STM32F0) || defined(STM32F4)
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void Port::AFConfig(byte GPIO_AF) const
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{
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GPIO_PinAFConfig(Group, _PIN(_Pin), GPIO_AF);
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}
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#endif
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GPIO_TypeDef* Port::IndexToGroup(byte index) { return ((GPIO_TypeDef *) (GPIOA_BASE + (index << 10))); }
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byte Port::GroupToIndex(GPIO_TypeDef* group) { return (byte)(((int)group - GPIOA_BASE) >> 10); }
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#endif
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// 端口引脚保护
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#if DEBUG
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// 引脚保留位，记录每个引脚是否已经被保留，禁止别的模块使用
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// !!!注意，不能全零，否则可能会被当作zeroinit而不是copy，导致得不到初始化
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static ushort Reserved[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF};
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// 保护引脚，别的功能要使用时将会报错。返回是否保护成功
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bool Port::Reserve(Pin pin, bool flag, bool debug)
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{
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if(debug) debug_printf("::");
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int port = pin >> 4, bit = 1 << (pin & 0x0F);
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if (flag) {
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if (Reserved[port] & bit) {
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// 增加针脚已经被保护的提示，很多地方调用ReservePin而不写日志，得到False后直接抛异常
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debug_printf("打开 P%c%d 失败！该引脚已被打开", _PIN_NAME(pin));
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return false; // already reserved
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}
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Reserved[port] |= bit;
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if(debug) debug_printf("打开 P%c%d", _PIN_NAME(pin));
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} else {
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Reserved[port] &= ~bit;
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#if defined(STM32F1)
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int config = 0;
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uint shift = (pin & 7) << 2; // 4 bits / pin
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uint mask = 0xF << shift; // 屏蔽掉其它位
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GPIO_TypeDef* port2 = IndexToGroup(port); // pointer to the actual port registers
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if (pin & 0x08) { // bit 8 - 15
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config = port2->CRH & mask;
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} else { // bit 0-7
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config = port2->CRL & mask;
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}
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config >>= shift; // 移位到最右边
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config &= 0xF;
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if(debug) debug_printf("关闭 P%c%d Config=0x%02x", _PIN_NAME(pin), config);
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#else
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if(debug) debug_printf("关闭 P%c%d", _PIN_NAME(pin));
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#endif
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}
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return true;
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}
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// 引脚是否被保护
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bool Port::IsBusy(Pin pin)
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{
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int port = pin >> 4, sh = pin & 0x0F;
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return (Reserved[port] >> sh) & 1;
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}
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#endif
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// 引脚配置
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#define REGION_Config 1
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#ifdef REGION_Config
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void OutputPort::OnOpen(GPIO_InitTypeDef& gpio)
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{
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#ifndef STM32F4
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assert_param(Speed == 2 || Speed == 10 || Speed == 50);
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#else
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assert_param(Speed == 2 || Speed == 25 || Speed == 50 || Speed == 100);
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#endif
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#if DEBUG
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if(Debug)
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{
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debug_printf(" %dM", Speed);
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if(OpenDrain)
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debug_printf(" 开漏");
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else
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debug_printf(" 推挽");
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if(Invert) debug_printf(" 倒置");
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}
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#endif
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// 配置之前，需要根据倒置情况来设定初始状态，也就是在打开端口之前必须明确端口高低状态
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ushort dat = GPIO_ReadOutputData(Group);
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bool v = InitValue ^ Invert;
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if(!v)
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dat &= ~Mask;
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else
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dat |= Mask;
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GPIO_Write(Group, dat);
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Port::OnOpen(gpio);
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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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#ifndef STM32F4
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case 10: gpio.GPIO_Speed = GPIO_Speed_10MHz; break;
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#else
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case 25: gpio.GPIO_Speed = GPIO_Speed_25MHz; break;
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case 100: gpio.GPIO_Speed = GPIO_Speed_100MHz; break;
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#endif
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case 50: gpio.GPIO_Speed = GPIO_Speed_50MHz; break;
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}
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#ifdef STM32F1
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gpio.GPIO_Mode = OpenDrain ? GPIO_Mode_Out_OD : GPIO_Mode_Out_PP;
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#else
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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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#endif
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}
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void AlternatePort::OnOpen(GPIO_InitTypeDef& gpio)
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{
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OutputPort::OnOpen(gpio);
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#ifdef STM32F1
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gpio.GPIO_Mode = OpenDrain ? GPIO_Mode_AF_OD : GPIO_Mode_AF_PP;
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#else
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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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#endif
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}
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void AnalogInPort::OnOpen(GPIO_InitTypeDef& gpio)
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{
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Port::OnOpen(gpio);
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#ifdef STM32F1
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gpio.GPIO_Mode = GPIO_Mode_AIN; //
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#else
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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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#endif
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}
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OutputPort& OutputPort::Init(Pin pin, bool invert)
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{
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Port::Set(pin);
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Invert = invert;
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return *this;
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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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ushort OutputPort::ReadGroup() // 整组读取
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{
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return GPIO_ReadOutputData(Group);
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}
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bool OutputPort::Read()
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{
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if(Empty()) return false;
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// 转为bool时会转为0/1
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bool rs = GPIO_ReadOutputData(Group) & Mask;
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return rs ^ Invert;
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}
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bool OutputPort::ReadInput()
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{
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if(Empty()) return false;
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bool rs = GPIO_ReadInputData(Group) & Mask;
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return rs ^ Invert;
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}
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bool OutputPort::Read(Pin pin)
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{
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GPIO_TypeDef* group = _GROUP(pin);
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return (group->IDR >> (pin & 0xF)) & 1;
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}
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void OutputPort::Write(bool value)
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{
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if(Empty()) return;
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if(value ^ Invert)
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GPIO_SetBits(Group, Mask);
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else
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GPIO_ResetBits(Group, Mask);
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}
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void OutputPort::WriteGroup(ushort value)
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{
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if(Empty()) return;
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GPIO_Write(Group, value);
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}
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void OutputPort::Up(uint ms)
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{
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if(Empty()) return;
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Write(true);
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Sys.Sleep(ms);
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Write(false);
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}
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void OutputPort::Blink(uint times, uint ms)
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{
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if(Empty()) return;
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bool flag = true;
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for(int i=0; i<times; i++)
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{
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Write(flag);
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flag = !flag;
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Sys.Sleep(ms);
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}
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Write(false);
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}
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// 设置端口状态
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void OutputPort::Write(Pin pin, bool value)
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{
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if(pin == P0) return;
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if(value)
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GPIO_SetBits(_GROUP(pin), _PORT(pin));
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else
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GPIO_ResetBits(_GROUP(pin), _PORT(pin));
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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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/* 中断状态结构体 */
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/* 一共16条中断线，意味着同一条线每一组只能有一个引脚使用中断 */
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typedef struct TIntState
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{
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InputPort* Port;
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bool OldValue;
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uint ShakeTime; // 抖动时间
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} IntState;
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// 16条中断线
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static IntState States[16];
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static bool hasInitState = false;
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int Bits2Index(ushort value)
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{
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for(int i=0; i<16; i++)
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{
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if(value & 0x01) return i;
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value >>= 1;
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}
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return -1;
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}
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void InputPort::Init(bool floating, PuPd_TypeDef pupd)
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{
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PuPd = pupd;
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Floating = floating;
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//ShakeTime = 20;
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// 有些应用的输入口需要极高的灵敏度，这个时候不需要抖动检测
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ShakeTime = 0;
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Invert = false;
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HardEvent = false;
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_taskInput = 0;
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Handler = NULL;
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Param = NULL;
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}
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InputPort::~InputPort()
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{
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Sys.RemoveTask(_taskInput);
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}
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InputPort& InputPort::Init(Pin pin, bool invert)
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{
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Port::Set(pin);
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Invert = invert;
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Mode = 0x03;
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return *this;
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}
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ushort InputPort::ReadGroup() const // 整组读取
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{
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return GPIO_ReadInputData(Group);
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}
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// 读取本组所有引脚，任意脚为true则返回true，主要为单一引脚服务
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bool InputPort::Read() const
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{
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// 转为bool时会转为0/1
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bool rs = GPIO_ReadInputData(Group) & Mask;
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return rs ^ Invert;
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}
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bool InputPort::Read(Pin pin)
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{
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GPIO_TypeDef* group = _GROUP(pin);
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return (group->IDR >> (pin & 0xF)) & 1;
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}
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void InputPort::OnPress(bool down)
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{
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if(down)
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{
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if((Mode & 0x01) == 0) return;
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}
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else
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{
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if((Mode & 0x02) == 0) return;
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}
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if(HardEvent)
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{
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if(Handler) Handler(_Pin, down, Param);
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}
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else
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{
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_Value = down;
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Sys.SetTask(_taskInput, true, 0);
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}
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}
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void InputPort::InputTask(void* param)
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{
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InputPort* port = (InputPort*)param;
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if(port->Handler) port->Handler(port->_Pin, port->_Value, port->Param);
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}
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#define IT 1
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#ifdef IT
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void GPIO_ISR (int num) // 0 <= num <= 15
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{
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if(!hasInitState) return;
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IntState* st = States + num;
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if(!st) return;
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uint bit = 1 << num;
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bool value;
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//byte line = EXTI_Line0 << num;
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// 如果未指定委托，则不处理
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if(!st->Port) return;
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// 默认20us抖动时间
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uint shakeTime = st->ShakeTime;
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do {
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EXTI->PR = bit; // 重置挂起位
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//value = InputPort::Read(st->Pin); // 获取引脚状态
|
||
value = st->Port->Read(); // 获取引脚状态
|
||
if(shakeTime > 0)
|
||
{
|
||
// 值必须有变动才触发
|
||
if(value == st->OldValue) return;
|
||
|
||
Sys.Delay(shakeTime); // 避免抖动
|
||
}
|
||
} while (EXTI->PR & bit); // 如果再次挂起则重复
|
||
//EXTI_ClearITPendingBit(line);
|
||
// 值必须有变动才触发
|
||
if(shakeTime > 0 && value == st->OldValue) return;
|
||
st->OldValue = value;
|
||
/*if(st->Handler)
|
||
{
|
||
// 新值value为true，说明是上升，第二个参数是down，所以取非
|
||
st->Handler(st->Pin, !value, st->Param);
|
||
}*/
|
||
st->Port->OnPress(!value);
|
||
}
|
||
|
||
void EXTI_IRQHandler(ushort num, void* param)
|
||
{
|
||
#if defined(STM32F1) || defined(STM32F4)
|
||
// EXTI0 - EXTI4
|
||
if(num <= EXTI4_IRQn)
|
||
GPIO_ISR(num - EXTI0_IRQn);
|
||
else if(num == EXTI9_5_IRQn)
|
||
{
|
||
// EXTI5 - EXTI9
|
||
uint pending = EXTI->PR & EXTI->IMR & 0x03E0; // pending bits 5..9
|
||
int num = 5; pending >>= 5;
|
||
do {
|
||
if (pending & 1) GPIO_ISR(num);
|
||
num++; pending >>= 1;
|
||
} while (pending);
|
||
}
|
||
else if(num == EXTI15_10_IRQn)
|
||
{
|
||
// EXTI10 - EXTI15
|
||
uint pending = EXTI->PR & EXTI->IMR & 0xFC00; // pending bits 10..15
|
||
int num = 10; pending >>= 10;
|
||
do {
|
||
if (pending & 1) GPIO_ISR(num);
|
||
num++; pending >>= 1;
|
||
} while (pending);
|
||
}
|
||
#elif defined(STM32F0)
|
||
switch(num)
|
||
{
|
||
case EXTI0_1_IRQn:
|
||
{
|
||
uint pending = EXTI->PR & EXTI->IMR & 0x0003; // pending bits 0..1
|
||
int num = 0; pending >>= 0;
|
||
do {
|
||
if (pending & 1) GPIO_ISR(num);
|
||
num++; pending >>= 1;
|
||
} while (pending);
|
||
break;
|
||
}
|
||
case EXTI2_3_IRQn:
|
||
{
|
||
uint pending = EXTI->PR & EXTI->IMR & 0x000c; // pending bits 3..2
|
||
int num = 2; pending >>= 2;
|
||
do {
|
||
if (pending & 1) GPIO_ISR(num);
|
||
num++; pending >>= 1;
|
||
} while (pending);
|
||
}
|
||
case EXTI4_15_IRQn:
|
||
{
|
||
uint pending = EXTI->PR & EXTI->IMR & 0xFFF0; // pending bits 4..15
|
||
int num = 4; pending >>= 4;
|
||
do {
|
||
if (pending & 1) GPIO_ISR(num);
|
||
num++; pending >>= 1;
|
||
} while (pending);
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
#endif
|
||
|
||
void SetEXIT(int pinIndex, bool enable)
|
||
{
|
||
/* 配置EXTI中断线 */
|
||
EXTI_InitTypeDef ext;
|
||
EXTI_StructInit(&ext);
|
||
ext.EXTI_Line = EXTI_Line0 << pinIndex;
|
||
ext.EXTI_Mode = EXTI_Mode_Interrupt;
|
||
ext.EXTI_Trigger = EXTI_Trigger_Rising_Falling; // 上升沿下降沿触发
|
||
ext.EXTI_LineCmd = enable ? ENABLE : DISABLE;
|
||
EXTI_Init(&ext);
|
||
}
|
||
|
||
void InputPort::OnOpen(GPIO_InitTypeDef& gpio)
|
||
{
|
||
#if DEBUG
|
||
if(Debug)
|
||
{
|
||
debug_printf(" 抖动=%dus", ShakeTime);
|
||
if(Floating)
|
||
debug_printf(" 浮空");
|
||
else if(PuPd == PuPd_UP)
|
||
debug_printf(" 上拉");
|
||
else if(PuPd == PuPd_DOWN)
|
||
debug_printf(" 下拉");
|
||
if(Invert) debug_printf(" 倒置");
|
||
}
|
||
#endif
|
||
|
||
Port::OnOpen(gpio);
|
||
|
||
#ifdef STM32F1
|
||
if(Floating)
|
||
gpio.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
||
else if(PuPd == PuPd_UP)
|
||
gpio.GPIO_Mode = GPIO_Mode_IPU;
|
||
else if(PuPd == PuPd_DOWN)
|
||
gpio.GPIO_Mode = GPIO_Mode_IPD; // 这里很不确定，需要根据实际进行调整
|
||
#else
|
||
gpio.GPIO_Mode = GPIO_Mode_IN;
|
||
//gpio.GPIO_OType = !Floating ? GPIO_OType_OD : GPIO_OType_PP;
|
||
#endif
|
||
}
|
||
|
||
void InputPort::OnClose()
|
||
{
|
||
Port::OnClose();
|
||
|
||
int idx = Bits2Index(Mask);
|
||
|
||
IntState* st = &States[idx];
|
||
if(st->Port == this)
|
||
{
|
||
st->Port = NULL;
|
||
|
||
SetEXIT(idx, false);
|
||
|
||
Interrupt.Deactivate(PORT_IRQns[idx]);
|
||
}
|
||
}
|
||
|
||
// 注册回调 及中断使能
|
||
void InputPort::Register(IOReadHandler handler, void* param)
|
||
{
|
||
//if(!Mask) return;
|
||
assert_param2(_Pin != P0, "输入注册必须先设置引脚");
|
||
|
||
Handler = handler;
|
||
Param = param;
|
||
|
||
// 检查并初始化中断线数组
|
||
if(!hasInitState)
|
||
{
|
||
for(int i=0; i<16; i++)
|
||
{
|
||
IntState* st = &States[i];
|
||
st->Port = NULL;
|
||
}
|
||
hasInitState = true;
|
||
}
|
||
|
||
byte gi = _Pin >> 4;
|
||
int idx = Bits2Index(Mask);
|
||
IntState* st = &States[idx];
|
||
st->ShakeTime = ShakeTime;
|
||
|
||
InputPort* port = st->Port;
|
||
// 检查是否已经注册到别的引脚上
|
||
if(port != this && port != NULL)
|
||
{
|
||
#if DEBUG
|
||
debug_printf("中断线EXTI%d 不能注册到 P%c%d, 它已经注册到 P%c%d\r\n", gi, _PIN_NAME(_Pin), _PIN_NAME(port->_Pin));
|
||
#endif
|
||
return;
|
||
}
|
||
st->Port = this;
|
||
st->OldValue = Read(); // 预先保存当前状态值，后面跳变时触发中断
|
||
|
||
// 打开时钟，选择端口作为端口EXTI时钟线
|
||
#if defined(STM32F0) || defined(STM32F4)
|
||
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
|
||
SYSCFG_EXTILineConfig(gi, idx);
|
||
#elif defined(STM32F1)
|
||
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
|
||
GPIO_EXTILineConfig(gi, idx);
|
||
#endif
|
||
|
||
SetEXIT(idx, true);
|
||
|
||
// 打开并设置EXTI中断为低优先级
|
||
Interrupt.SetPriority(PORT_IRQns[idx], 1);
|
||
|
||
Interrupt.Activate(PORT_IRQns[idx], EXTI_IRQHandler, this);
|
||
|
||
if(!_taskInput && !HardEvent) _taskInput = Sys.AddTask(InputTask, this, -1, -1, "输入中断");
|
||
}
|
||
|
||
#endif
|