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发表于 2023-6-14 11:58:34
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static void LCD_FSMC_MODEA_Config(void)
{
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef readWriteTiming;
FSMC_NORSRAMTimingInitTypeDef writeTiming;
/* 使能FSMC时钟*/
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE);
readWriteTiming.FSMC_AddressSetupTime = 0xF; //地址建立时间(ADDSET)为16个HCLK 1/168M=6ns*16=96ns
readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间(ADDHLD)模式A未用到
readWriteTiming.FSMC_DataSetupTime = 60; //数据保存时间为60个HCLK =6*60=360ns
readWriteTiming.FSMC_BusTurnAroundDuration = 0x00;
readWriteTiming.FSMC_CLKDivision = 0x00;
readWriteTiming.FSMC_DataLatency = 0x00;
readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A
writeTiming.FSMC_AddressSetupTime = 0x09; //地址建立时间(ADDSET)为9个HCLK =54ns
writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间(A
writeTiming.FSMC_DataSetupTime = 0x08; //数据保存时间为6ns*9个HCLK=54ns
writeTiming.FSMC_BusTurnAroundDuration = 0x00;
writeTiming.FSMC_CLKDivision = 0x00;
writeTiming.FSMC_DataLatency = 0x00;
writeTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAMx;// 这里我们使用NE4 ,也就对应BTCR[6],[7]。
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // 不复用数据地址
FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM; //SRAM
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;//存储器数据宽度为16bit
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;// FSMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; // 存储器写使能
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; // 读写使用不同的时序
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; //读写时序
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming; //写时序
FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); //初始化FSMC配置
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAMx, ENABLE); // 使能BANK1
}
这是FSMC配置
/**
* @brief 向LCD写入命令
* @param usCmd:要写入的命令
* @return none
* @author none
*/
static __inline void LCD_Write_Cmd(uint16_t usCmd)
{
// uint16_t cmd = usCmd;
*(__IO uint16_t*)(FSMC_Addr_LCD_CMD) = usCmd;
}
/**
* @brief 向LCD写入数据
* @param usData:要写入的命令
* @return none
* @author none
*/
static __inline void LCD_Write_Data(uint16_t usData)
{
// uint16_t data = usData;
*(__IO uint16_t*)(FSMC_Addr_LCD_DATA) = usData;
}
屏幕的RS连接到FSMC_A0,FSMC_Addr_LCD_CMD = 0X6C000000,FSMC_Addr_LCD_DATA = 0X6C000080.
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