在线时间1 小时
UID183061
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- 2018-5-22
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a0a.1 0b0c
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;
}
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