stm32f107.c
来自「LWIP在STM32裸机上的移植」· C语言 代码 · 共 422 行 · 第 1/2 页
C
422 行
- ETH_MII_RXD1 / ETH_RMII_RXD1 : PD10 (RMII)
- ETH_MII_RXD2 : PD11
- ETH_MII_RXD3 : PD12
- ETH_MII_RX_ER : PB10
*/
/* ETHERNET pins remapp in STM3210C-EVAL board: RX_DV and RxD[3:0] */
GPIO_PinRemapConfig(GPIO_Remap_ETH, ENABLE);
/* Configure PA0, PA1 and PA3 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PB10 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure PC3 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure PD8, PD9, PD10, PD11 and PD12 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_InitStructure); /**/
/* ADC Channel14 config -------------------------------------------------*/
/* Relative to STM3210D-EVAL Board */
/* Configure PC.04 (ADC Channel14) as analog input ----------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* MCO pin configuration-------------------------------------------------*/
/* Configure MCO (PA8) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
#else //RMII_MODE
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* ETHERNET pins configuration */
/* AF Output Push Pull:
- ETH_MII_MDIO / ETH_RMII_MDIO : PA2
- ETH_MII_MDC / ETH_RMII_MDC : PC1
- ETH_MII_TXD2 : PC2
- ETH_MII_TX_EN / ETH_RMII_TX_EN: PB11
- ETH_MII_TXD0 / ETH_RMII_TXD0 : PB12
- ETH_MII_TXD1 / ETH_RMII_TXD1 : PB13
*/
/* Configure PA2 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PC1, PC2 and PC3 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure PB5, PB8, PB11, PB12 and PB13 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/**************************************************************/
/* For Remapped Ethernet pins */
/*************************************************************/
/* Input (Reset Value):
- ETH_MII_RX_CLK / ETH_RMII_REF_CLK : PA1
- ETH_MII_RX_DV / ETH_RMII_CRS_DV : PD8
- ETH_MII_RXD0 / ETH_RMII_RXD0 : PD9
- ETH_MII_RXD1 / ETH_RMII_RXD1 : PD10
*/
/* ETHERNET pins remapp in STM3210C-EVAL board: RX_DV and RxD[3:0] */
GPIO_PinRemapConfig(GPIO_Remap_ETH, ENABLE);
/* Configure PA1 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PD8, PD9, PD10, PD11 and PD12 as input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_InitStructure); /**/
/* ADC Channel14 config ---------------------------------------------------*/
/* Relative to STM3210D-EVAL Board */
/* Configure PC.00 (ADC Channel10) as analog input ------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* MCO pin configuration---------------------------------------------------*/
/* Configure MCO (PA8) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
#endif
//注意定时器的倍频器：当APB的分频值为1时，TIMx的倍频值为1，否则TIMx的倍频值为2.
//由于TIM3由APB1提供时钟(APB1分频值为2)，故TIM3的倍频值为2，TIM3CLK=36M*2=72MHz
void TIM3_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* ---------------------------------------------------------------
PCLK1=36MHz
TIM3CLK = 72 MHz, Prescaler = 7200, TIM3 counter clock = 10KHz
--------------------------------------------------------------- */
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = (10-1); //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(1ms)
TIM_TimeBaseStructure.TIM_Prescaler =(7200-1); //设置用来作为TIMx时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
//TIM_UpdateDisableConfig(TIM3,ENABLE); //Enables the Update event for TIM3
TIM_ITConfig(TIM3,TIM_IT_Update, ENABLE); //TIM IT enable | TIM_IT_Trigger
TIM_Cmd(TIM3, ENABLE); //TIM3 enable counter
}
//分频数为64,重载值为625,溢出时间为1s (IWDG timeout equal to 1s)
// (the timeout may varies due to LSI frequency dispersion)
void IWDG_Configuration(void)
{
//IWDG_KR: 写入0X5555
IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable); //使能对寄存器IWDG_PR和IWDG_RLR的写操作
//PR : IWDG预分频寄存器
//RLR: IWDG重装载寄存器
IWDG_SetPrescaler(IWDG_Prescaler_64); //设置IWDG预分频值为32 (1.6ms)
//IWDG counter clock: 40KHz(LSI)/64 = 625Hz)
IWDG_SetReload(750); //设置IWDG重装载值为750
//Set counter reload value to 750 (1.2s)
//IWDG_KR: 写入0XAAAA
IWDG_ReloadCounter(); //按照IWDG重装载寄存器的值重装载IWDG计数器 (Reload IWDG counter)
//IWDG_KR: 写入0XCCCC
IWDG_Enable(); //使能IWDG (Enable IWDG (the LSI oscillator will be enabled by hardware))
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* 2 bit for pre-emption priority, 2 bits for subpriority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);
//设置向量表的位置和偏移
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); //向量表位于RAM
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); //向量表位于FLASH
#endif
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;//先占优先级0级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级3级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = CAN2_RX1_IRQn; //CAN2_FIFO1
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
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