芯片是STM32F103ZE，开发板是百为的，FSMC驱动外部的LCD代码也是百为提供的。
程序中使用了UART1（PA9和PA10口），用FSMC驱动外部的LCD，发现一个奇怪的问题，当打开UART1的TC和RXNE中断后，再初始化FSMC进行LCD初始化时，就进入了HardFault_Handle，当我取消UART1的TC和RXNE中端使能后，LCD显示就正常了。
还请高手帮我解答，谢谢。
UART1的初始化代码如下：
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
- NVIC_InitTypeDef NVIC_InitStructure;
-
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1 | RCC_APB2Periph_AFIO, ENABLE);
- /*Enable the USART1 Interrupt(使能USART1中断)*/
- NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
- /* Configure the NVIC Preemption Priority Bits */
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
-
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority =0;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
-
- /* RXD */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- /* TXD */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- USART_InitStructure.USART_BaudRate = BAUD;
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;
- USART_InitStructure.USART_StopBits = USART_StopBits_1;
- USART_InitStructure.USART_Parity = USART_Parity_No;
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_Init(USART1, &USART_InitStructure);
-
- USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //接收到数据中断
- USART_ITConfig(USART1, USART_IT_TC, ENABLE); //传输完成中断
-
- USART_Cmd(USART1, ENABLE); //UART1使能
- GPIO_InitTypeDef GPIO_InitStructure;
- /* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
- RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
- RCC_APB2Periph_AFIO, ENABLE);
- /* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
- PD.10(D15), PD.14(D0), PD.15(D1) as alternate
- function push pull */
- 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_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOD, &GPIO_InitStructure);
- /* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
- PE.14(D11), PE.15(D12) as alternate function push pull */
- 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);
- /* Set PF.00(A0 (RS)) as alternate function push pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
- GPIO_Init(GPIOF, &GPIO_InitStructure);
- /* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
- GPIO_Init(GPIOG, &GPIO_InitStructure);
- FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
- FSMC_NORSRAMTimingInitTypeDef p;
- /*-- FSMC Configuration ------------------------------------------------------*/
- /*----------------------- SRAM Bank 4 ----------------------------------------*/
- /* FSMC_Bank1_NORSRAM4 configuration */
- p.FSMC_AddressSetupTime = 0;
- p.FSMC_AddressHoldTime = 0;
- p.FSMC_DataSetupTime = 1;
- p.FSMC_BusTurnAroundDuration = 0;
- p.FSMC_CLKDivision = 0;
- p.FSMC_DataLatency = 0;
- p.FSMC_AccessMode = FSMC_AccessMode_A;
- /* Color LCD configuration ------------------------------------
- LCD configured as follow:
- - Data/Address MUX = Disable
- - Memory Type = SRAM
- - Data Width = 16bit
- - Write Operation = Enable
- - Extended Mode = Enable
- - Asynchronous Wait = Disable */
- FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
- FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
- FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
- 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_ExtendedMode = FSMC_ExtendedMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
- FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
- FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
- FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
- /* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */
- FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
- Delay_10ms(5); /* delay 50 ms */
- /* Start Initial Sequence ----------------------------------------------------*/
- LCD_WriteReg(R229,0x8000); /* Set the internal vcore voltage */
- LCD_WriteReg(R0, 0x0001); /* Start internal OSC. */
- ...
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