210 lines
6.9 KiB
C++
210 lines
6.9 KiB
C++
#include "Kernel\Sys.h"
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#include "Device\Port.h"
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#include "Device\Pwm.h"
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#include "Platform\stm32.h"
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/*================ Pwm ================*/
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// STM32F030 的 先这么写着 后面再对 103 做调整
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typedef void (*TIM_OCInit)(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct);
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const static TIM_OCInit OCInits[4]={TIM_OC1Init, TIM_OC2Init, TIM_OC3Init, TIM_OC4Init};
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typedef void(*TIM_OCPldCfg)(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload);
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const static TIM_OCPldCfg TIM_OCPldCfgs[4] = { TIM_OC1PreloadConfig,TIM_OC2PreloadConfig,TIM_OC3PreloadConfig,TIM_OC4PreloadConfig, };
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typedef void(*SetCompare)(TIM_TypeDef* TIMx, uint32_t TIM_ICPSC);
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const static SetCompare SetCompares[4] = { TIM_SetCompare1,TIM_SetCompare2,TIM_SetCompare3,TIM_SetCompare4, };
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void Pwm::Config()
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{
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TS("Pwm::Config");
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Timer::Config(); // 主要是配置时钟基础部分 TIM_TimeBaseInit
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auto ti = (TIM_TypeDef*)_Timer;
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if(Opened)
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Flush();
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else
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{
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TIM_OCInitTypeDef oc;
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TIM_OCStructInit(&oc);
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oc.TIM_OCMode = TIM_OCMode_PWM1;
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oc.TIM_OutputState = TIM_OutputState_Enable;
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oc.TIM_OCPolarity = Polarity ? TIM_OCPolarity_High : TIM_OCPolarity_Low;
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oc.TIM_OCIdleState = IdleState ? TIM_OCIdleState_Reset : TIM_OCIdleState_Set;
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for(int i=0; i<4; i++)
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{
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if(Enabled[i])
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{
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oc.TIM_Pulse = Pulse[i];
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OCInits[i](ti, &oc);
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TIM_OCPldCfgs[i](ti, TIM_OCPreload_Enable);
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debug_printf("Pwm%d::Config %d \r\n", _index+1, i);
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}
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}
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}
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// PWM模式用不上中断 直接就丢了吧 给中断管理减减麻烦
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TIM_ITConfig(ti, TIM_IT_Update, DISABLE);
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TIM_ClearFlag(ti, TIM_FLAG_Update);
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TIM_SetCounter(ti, 0x00000000); // 清零定时器CNT计数寄存器
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TIM_ARRPreloadConfig(ti, ENABLE); // 使能预装载寄存器ARR
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}
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void Pwm::Flush()
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{
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for (int i = 0; i < 4; i++)
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{
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if (Ports[i]) SetCompares[i]((TIM_TypeDef*)_Timer, Pulse[i]);
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}
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}
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void Pwm::Open()
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{
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// 设置映射
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//if(Remap！=0) GPIO_PinRemapConfig(Remap, ENABLE);
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Timer::Open();
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if(_index == 0 ||_index == 14 ||_index == 15|| _index == 16)
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TIM_CtrlPWMOutputs((TIM_TypeDef*)_Timer, ENABLE);
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// 打开引脚
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const Pin g_Pins[][4] = TIM_PINS;
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//const Pin g_Pins2[][4] = TIM_PINS_FULLREMAP;
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// 仅支持标准引脚和完全映射，非完全映射需要外部自己初始化
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auto pss = g_Pins;
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//if(Remap) pss = g_Pins2;
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auto ps = pss[_index];
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for(int i=0; i<4; i++)
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{
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if(Enabled[i] && Ports[i] == nullptr)
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Ports[i] = new AlternatePort(ps[i]);
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}
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}
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void Pwm::Close()
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{
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if(_index == 0 ||_index == 14 ||_index == 15|| _index == 16)
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TIM_CtrlPWMOutputs((TIM_TypeDef*)_Timer, DISABLE);
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for (int i = 0; i < 4; i++)
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{
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if (Ports[i]) TIM_OCPldCfgs[i]((TIM_TypeDef*)_Timer, TIM_OCPreload_Disable);
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}
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Timer::Close();
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}
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void PwmData::Config()
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{
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Pwm::Config();
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// 如果需要连续调整宽度，那么需要中断
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if(Pulses) SetHandler(true);
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}
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void PwmData::OnInterrupt()
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{
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if(!Pulses || !PulseCount || PulseIndex > PulseCount) return;
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auto ti = (TIM_TypeDef*)_Timer;
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// 动态计算4个寄存器中的某一个，并设置宽度
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auto reg = &(ti->CCR1);
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reg += Channel;
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// 发送完成以后，最后一次中断，把占空比调整为一半
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if(PulseIndex >= PulseCount)
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{
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PulseIndex++;
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*reg = Period >> 1;
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return;
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}
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// 在中断里面切换宽度
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ushort p = Pulses[PulseIndex++];
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// 设置宽度
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*reg = p;
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// 重复
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if(Repeated && PulseIndex >= PulseCount) PulseIndex = 0;
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}
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/*
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//STM32F103C8T6 Time3PWM输出初始化 可用
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//arr：自动重装值
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//psc：时钟预分频数
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void Time3PWM_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); //使能GPIO外设和AFIO复用功能模块时钟使能
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//用于TIM3的CH2输出的PWM通过该LED显示
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//设置该引脚为复用输出功能
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//GPIO_PinRemapConfig(GPIO_FullRemap_TIM3,ENABLE);
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GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE); // PB0 PB1 PB4 PB5 都是复用引脚
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //TIM3_CH3
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //TIM3_CH4
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE); // PB4 是 NJTRST
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; //TIM3_CH1
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM3_CH2
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值 80K
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TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值 不分频
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TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
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TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
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TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //选择定时器模式:TIM脉冲宽度调制模式2 TIM_OCMode_PWM2 TIM_OCMode_PWM1 波形为反向
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
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TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
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TIM_OC1Init(TIM3, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
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TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器
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TIM_OC2Init(TIM3, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
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TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器
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TIM_OC3Init(TIM3, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
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TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器
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TIM_OC4Init(TIM3, &TIM_OCInitStructure); //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
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TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器
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TIM_ARRPreloadConfig(TIM3, ENABLE); //使能TIMx在ARR上的预装载寄存器
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TIM_Cmd(TIM3, ENABLE); //使能TIMx外设
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}
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更新PWM输出函数 可用
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TIM_SetCompare1(TIM3,led0pwmval);
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TIM_SetCompare2(TIM3,led0pwmval);
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TIM_SetCompare3(TIM3,led0pwmval);
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TIM_SetCompare4(TIM3,led0pwmval);
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*/
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