stm32f103vct6 +dm9000cep （通过FSMC连接）

只看该作者 · 2012-12-25 18:08

我的连接方式：16跟数据线连接到stm32f103vct6的fsmc的数据线上，FSMC_NOE和FSMC_NWE 分别连接到dm9000a的IOR和IOW上FSMC_A18和 FSMC_A16分别连接到dm9000a的cs和cmd上，dm9000a的rst连接到一个单独的GPIO上，DM9000A连接到stm32f103的外部中断，

遇到的问题：读取厂商ID是错误的：
下面是我的初始化配置文件：
static void DM9K_FSMCConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef  FSMC_NORSRAMTimingInitStructure;

/* FSMC GPIO configure */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE
      | RCC_APB2Periph_AFIO, ENABLE);

/* PD14 FSMC_D0 PD15 FSMC_D1 PD10  FSMC_D15 PD8  FSMC_D13  PD9  FSMC_D14  PD2  FSMC_D2  PD1  FSMC_D3 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 |GPIO_Pin_4 | GPIO_Pin_5| GPIO_Pin_8 | GPIO_Pin_9 |  GPIO_Pin_10
                              | GPIO_Pin_14 | GPIO_Pin_15|GPIO_Pin_11 /*|GPIO_Pin_12*/| GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD,&GPIO_InitStructure);

/* PE7 ~ PE15  FSMC_D4 ~ FSMC_D12 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 |
                              GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;

GPIO_Init(GPIOE,&GPIO_InitStructure);

/* FSMC set read time */
FSMC_NORSRAMTimingInitStructure.FSMC_AddressSetupTime = 4;          /* 地址建立时间  */
FSMC_NORSRAMTimingInitStructure.FSMC_AddressHoldTime = 4;
FSMC_NORSRAMTimingInitStructure.FSMC_DataSetupTime = 8;             /* 数据建立时间  */
FSMC_NORSRAMTimingInitStructure.FSMC_BusTurnAroundDuration = 0;
FSMC_NORSRAMTimingInitStructure.FSMC_CLKDivision = 0;
FSMC_NORSRAMTimingInitStructure.FSMC_DataLatency = 4;
FSMC_NORSRAMTimingInitStructure.FSMC_AccessMode = FSMC_AccessMode_A; /* FSMC 访问模式 */

FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Enable;
FSMC_NORSRAMInitStructure.FSMC_MemoryType =  FSMC_MemoryType_NOR;
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
//FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;
FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
/* FSMC set write time */
FSMC_NORSRAMTimingInitStructure.FSMC_AddressSetupTime = 4;                /* 地址建立时间  */
FSMC_NORSRAMTimingInitStructure.FSMC_AddressHoldTime = 4;
FSMC_NORSRAMTimingInitStructure.FSMC_DataSetupTime = 8;                   /* 数据建立时间  */
FSMC_NORSRAMTimingInitStructure.FSMC_BusTurnAroundDuration = 0;
FSMC_NORSRAMTimingInitStructure.FSMC_CLKDivision = 0;
FSMC_NORSRAMTimingInitStructure.FSMC_DataLatency = 4;
FSMC_NORSRAMTimingInitStructure.FSMC_AccessMode = FSMC_AccessMode_A;       /* FSMC 访问模式 */
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;

FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);

/* Enable FSMC Bank4_SRAM Bank */
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
return;
}