STM32F103ZET为什么找不到AFIO_MAPR2 ？TIM4CH2无输出的原因是什么

只看该作者 · 2014-4-25 11:27

本帖最后由 dontium 于 2014-4-25 15:01 编辑

  我用IAR7.1（盗版）编译STM32F103ZET，也设置为HD并使用相应的文件。因为现在要用到在PB6、7、8、9上的TIM4 CH1、CH2、CH3、CH4，在调试时，CH1、CH3、CH4有正常输出，唯独CH2无输出（恒高）。

经查看手册，AFIO_MAPR2中有一位
      Bit 10 FSMC_NADV: NADV connect/disconnect                      This bit is set and cleared by software. It controls the use of the optional FSMC_NADV signal.
            0: The NADV signal is connected to the output (default)
            1: The NADV signal is not connected. The I/O pin can be used by another peripheral.

所以就怀疑是不是它的问题，但是，经REMAP设置后，仍不能正常工作，随后就监视AFIO_MAPR2 的值，在IAR的AFIO寄存器查看列表中没有发现它的存在，

又用一32位变量读取它的值，放在AFIO->MAPR2 |= 0x0400;前后、及前后若干个语句（排除寄存器更新慢的问题），这个变量始终为0！

烦请帮忙找找解决办法，谢谢大家！

3万 · 2014-4-25 12:11

PWM程序发上来看看

只看该作者 · 2014-4-25 12:39

mmuuss586 发表于 2014-4-25 12:11
PWM程序发上来看看

这是RCC：

/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);

/* Enable All GPIO and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
   | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG
   | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC3 | RCC_APB2Periph_TIM1, ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2 | RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM4 , ENABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2 | RCC_AHBPeriph_SRAM
   | RCC_AHBPeriph_FSMC | RCC_AHBPeriph_SDIO, ENABLE);

这是GPIO

void GPIO_PortInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

/*  ------------------- Button ------------------------------------  */
/* Configure PE.02, PE.03, PE.04, PE.05, PE.06 as input floating, for buttun used  */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOE, &GPIO_InitStructure);

/*  ------------------- Buzzer and LED ---------------------------  */
GPIO_InitStructure.GPIO_Pin = BUZZER_PIN | LED_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(BUZ_LED_PORT, &GPIO_InitStructure);

/*  ---------------------- ADC Port ------------------------------  */
// Panel
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);

// Actuator and BackLight (PC4)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 |GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);

/*  ---------------------- PWM Port ------------------------------  */
// VIBRATE, Heat,
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_6 | GPIO_Pin_7
| GPIO_Pin_8 | GPIO_Pin_9 | BL_PWM_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

////////////////////////////////////////////////////////////////////////
AfioMapr2 = AFIO->MAPR2;
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_TIM4, DISABLE);
AFIO->MAPR2 |= 0x0400; // The NADV signal is not connected. The I/O pin can be used by another peripheral
AfioMapr2 = AFIO->MAPR2;
//GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1,ENABLE);

// BackLight
/* GPIO_InitStructure.GPIO_Pin = BL_PWM_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(BL_PWM_PORT, &GPIO_InitStructure);
*/
/*  ---------------------  Keyboard Port --------------------------  */
GPIO_InitStructure.GPIO_Pin  = KEY_UP | KEY_DOWN | KEY_LIFT | KEY_RIGHT | KEY_ENTER;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(KEYBOARD_PORT, &GPIO_InitStructure);
AfioMapr2 = AFIO->MAPR2;
#if 0
GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource1);

  /* Configure EXTI0 line */
  EXTI_InitStructure.EXTI_Line = EXTI_Line0;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
#endif
}

TIM：
void TIMER_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
//----------  Back light ----------- TIM1 C2N
TIM_DeInit(TIM1);
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //72M
TIM_TimeBaseStructure.TIM_Prescaler = 0; //
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 360; // 200kHz
TIM_TimeBaseStructure.TIM_RepetitionCounter=0; //  RepetitionCounter+1 times overflow

TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

/* Channel 2N Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; // TIM_OCMode_Timing
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse = 50; // write to CCR
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC2Init(TIM1, &TIM_OCInitStructure);

TIM_SelectOutputTrigger(TIM1,TIM_TRGOSource_Update);// TIM1 Update events as a trigger TRGO
TIM_ClearFlag(TIM1,TIM_FLAG_Update); // prevent interrupt at initial state

TIM_Cmd(TIM1,ENABLE); //enable TIM1

//----------------------------------------- vibrate  TIM3 CH1, 2
TIM_DeInit(TIM3);

TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV4; //18M
TIM_TimeBaseStructure.TIM_Prescaler = 180; //100KHz, 1Tick=1ms
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 1000  ;//  period = 0.01s
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);

/* Channel 1, 2 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500; // write to CCR
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC2Init(TIM3, &TIM_OCInitStructure);

TIM_ClearFlag(TIM3,TIM_FLAG_Update); // prevent interrupt at initial state

TIM_Cmd(TIM3,ENABLE); //enable TIM1

// -------------------------------------  PWM , heat , TIM4 CH1, 2, 3, 4
TIM_DeInit(TIM4);

TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV4; //18M
TIM_TimeBaseStructure.TIM_Prescaler = 1800; //100KHz, 1Tick=1ms
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 1000  ;//  period = 0.1s
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM4,&TIM_TimeBaseStructure);

/* Channel 1 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500; // write to CCR
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

//AFIO->MAPR =
TIM_OC1Init(TIM4, &TIM_OCInitStructure);
TIM_OC2Init(TIM4, &TIM_OCInitStructure);////////////////////////////////////
TIM_OC3Init(TIM4, &TIM_OCInitStructure);
TIM_OC4Init(TIM4, &TIM_OCInitStructure);

TIM_SelectOutputTrigger(TIM4,TIM_EventSource_CC4);// TIM4 OC events as a trigger TRGO

TIM_ClearFlag(TIM4,TIM_FLAG_Update);

TIM_Cmd(TIM4,ENABLE); // enable TIM3  --- Counter enable

//TIM_ITConfig(TIM1, TIM_IT_COM, ENABLE);

/* Main Output Enable */
TIM_CtrlPWMOutputs(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM3, ENABLE);
TIM_CtrlPWMOutputs(TIM4, ENABLE);

}

3万 · 2014-4-25 15:25

本帖最后由 mmuuss586 于 2014-4-25 15:27 编辑

你试下这段程序看看
http://www.openedv.com/posts/list/5403.htm
原文在这里
/*PWM输出初始化*/
void Timer4_Init(u16 arr,u16 psc)
{
      //此部分需手动修改 IO口设置
RCC->APB2ENR|=1<<0; //复用
RCC->APB1ENR|=1<<2; //TIM4 时钟使能
RCC->APB2ENR|=1<<3; //使能PORTB时钟

GPIOB->CRL&=0XF0FFFFFF;//PB6 输出
GPIOB->CRL|=0X0B000000;//复用功能输出
GPIOB->ODR|=1<<6;//PB6 上拉

GPIOB->CRL&=0X0FFFFFFF;//PB7 输出
GPIOB->CRL|=0XB0000000;//复用功能输出
GPIOB->ODR|=1<<7;//PB7 上拉

GPIOB->CRH&=0XFFFFFFF0;//PB8 输出
GPIOB->CRH|=0X0000000B;//复用功能输出
GPIOB->ODR|=1<<8;//PB8 上拉

GPIOB->CRH&=0XFFFFFF0F;//PB9 输出
GPIOB->CRH|=0X000000B0;//复用功能输出
GPIOB->ODR|=1<<9;//PB9 上拉

TIM4->ARR=arr;//设定计数器自动重装值
TIM4->PSC=psc;//预分频器不分频

TIM4->CCMR1|=6<<4;  //CH1 PWM1模式
      //TIM4->CCMR1|=1<<3; //CH1 预装载使能
TIM4->CCER|=1<<0;  //OC1  输出使能
TIM4->CR1=0x0080;  //ARPE使能

TIM4->CCMR1|=6<<12;  //CH2 PWM1模式
      //TIM4->CCMR1|=1<<11; //CH2 预装载使能
TIM4->CCER|=1<<4; //OC2  输出使能
TIM4->CR1=0x0080; //ARPE使能

TIM4->CCMR2|=6<<4;  //CH3 PWM1模式
      //TIM4->CCMR2|=1<<3; //CH3 预装载使能
TIM4->CCER|=1<<8;  //OC3  输出使能
TIM4->CR1=0x0080; //ARPE使能

TIM4->CCMR2|=6<<12;  //CH4 PWM1模式
      //TIM4->CCMR2|=1<<11; //CH4 预装载使能
TIM4->CCER|=1<<12; //OC4  输出使能
TIM4->CR1=0x0080; //ARPE使能

TIM4->DIER|=1<<0; //允许更新中断
TIM4->DIER|=1<<6; //允许触发中断
MY_NVIC_Init(9,0,TIM4_IRQChannel,4);//抢占1，子优先级1，组1
      TIM4->CR1|=0x01; //使能定时器4

      TIM4->CCR1 = 3035;       //CH1占空比初值
TIM4->CCR2 = 3035;       //CH2占空比初值
TIM4->CCR3 = 3035;
      //TIM4->CCR4 = 3035;       //CH6占空比初值

}

只看该作者 · 2014-4-25 15:41

mmuuss586 发表于 2014-4-25 15:25
你试下这段程序看看
http://www.openedv.com/posts/list/5403.htm
原文在这里

你的热心让我非常感动。

我试你的程序看看，并将分频填入1、ARR填入3055*2

只看该作者 · 2014-4-25 16:48

mmuuss586 发表于 2014-4-25 15:25
你试下这段程序看看
http://www.openedv.com/posts/list/5403.htm
原文在这里

还是不行，与原来的现象一样。

反复检查电路及PCB，没有发现异常。

PB7输出的是高电平 -- 并非上拉的那种高电平。所以我在怀疑是不是FSMC_NADV起了作用，但DEBUG时找不到AFIO_MAPR2，对它的内存0X4001001C读取也是全0

1万 · 2014-4-26 20:33

配置AFIO的寄存器之前，RCC_APB2Periph_AFIO时钟使能了么？

只看该作者 · 2014-4-26 21:27

本帖最后由 dontium 于 2014-4-26 21:35 编辑

香水城发表于 2014-4-26 20:33
配置AFIO的寄存器之前，RCC_APB2Periph_AFIO时钟使能了么？

已经配置了：

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
                                                | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG
                                                | RCC_APB2Periph_AFIO, ENABLE);

现在一个关键的问题是，AFIO->MAPR2这个寄存器在IAR中没有，根本找不到，读取这个地址的值也是0，

FSMC_NADV: NADV connect/disconnect
                                    This bit is set and cleared by software. It controls the use of the optional FSMC_NADV signal.
                                          0: The NADV signal is connected to the output (default)
                                          1: The NADV signal is not connected. The I/O pin can be used by another peripheral.

只看该作者 · 2014-4-29 00:46

俺再自己顶

只看该作者 · 2014-4-29 09:29

:lol

只看该作者 · 2014-4-29 09:35

数据手册和参考手册中也没有发现AFIO_MAPR2的存在，lz是从哪里获知的这个寄存器？
我只看到AFIO_MAPR这一个复用重映射配置寄存器。
------------------------------------------------
将MAPR2这部分代码屏蔽了再试试看？

只看该作者 · 2014-4-29 10:50

jjjkkk00 发表于 2014-4-29 09:35
数据手册和参考手册中也没有发现AFIO_MAPR2的存在，lz是从哪里获知的这个寄存器？
我只看到AFIO_MAPR这一个 ...

或者真的没有这个寄存器，但文档及头文件中有这个。

文档号：RM0008
文档名称：Reference manual
STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx
and STM32F107xx advanced ARM-based 32-bit MCUs

Doc ID 13902 Rev 14

第九章：
9 General-purpose and alternate-function I/Os (GPIOs
and AFIOs)

---- This section applies to the whole STM32F10xxx family, unless otherwise specified.

9.4.7 AF remap and debug I/O configuration register2 (AFIO_MAPR2)

只看该作者 · 2014-4-29 10:52

jjjkkk00 发表于 2014-4-29 09:35
数据手册和参考手册中也没有发现AFIO_MAPR2的存在，lz是从哪里获知的这个寄存器？
我只看到AFIO_MAPR这一个 ...

现在需要的是，将PB7的约定值NADV这个功能分配给TIM4CH2，

只看该作者 · 2014-5-6 14:30

嗨……，提醒结帖了。

在这个我认为高手林立的网站没有找到答案，说明ST公司的MCU有问题了，解铃还需要JI铃人啊！

STM32F103ZET为什么找不到AFIO_MAPR2 ？TIM4CH2无输出的原因是什么

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