求助，ILI9325 TFT在STM32F407画面显示正常，但读点颜色、读ID出错，调FSMC时序总是不行，各位指点一下。

rgzdb

ILI9325 TFT在STM32F407画面显示正常，但读点颜色、读ID出错，调FSMC时序总是出错，请大家帮忙看看如何修改。

[mw_shl_code=c,true] FSMC_NORSRAMTimingInitStructureRead.FSMC_AddressSetupTime = 3; FSMC_NORSRAMTimingInitStructureRead.FSMC_AddressHoldTime = 0; FSMC_NORSRAMTimingInitStructureRead.FSMC_DataSetupTime = 15; FSMC_NORSRAMTimingInitStructureRead.FSMC_BusTurnAroundDuration = 0; FSMC_NORSRAMTimingInitStructureRead.FSMC_CLKDivision = 1; FSMC_NORSRAMTimingInitStructureRead.FSMC_DataLatency = 0; FSMC_NORSRAMTimingInitStructureRead.FSMC_AccessMode = FSMC_AccessMode_A; /* Define Write Timing parameters */ FSMC_NORSRAMTimingInitStructureWrite.FSMC_AddressSetupTime = 3; FSMC_NORSRAMTimingInitStructureWrite.FSMC_AddressHoldTime = 0; FSMC_NORSRAMTimingInitStructureWrite.FSMC_DataSetupTime = 6; FSMC_NORSRAMTimingInitStructureWrite.FSMC_BusTurnAroundDuration = 0; FSMC_NORSRAMTimingInitStructureWrite.FSMC_CLKDivision = 1; FSMC_NORSRAMTimingInitStructureWrite.FSMC_DataLatency = 0; FSMC_NORSRAMTimingInitStructureWrite.FSMC_AccessMode = FSMC_AccessMode_A; /* Define protocol type */ FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4; //Bank1 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; //No mux FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM; //SRAM type FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b; //16 bits wide FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable; //No Burst FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable; // No wait FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; //Don'tcare FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; //No wrap mode FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; //Don't care FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; //Don't care FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; //Allow distinct Read/Write parameters FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; //Don't care[/mw_shl_code]

正点原子

给你个寄存器版本参考下:

[mw_shl_code=c,true] //初始化lcd //该初始化函数可以初始化各种ILI93XX液晶,但是其他函数是基于ILI9320的!!! //在其他型号的驱动芯片上没有测试! void LCD_Init(void) { vu32 i=0; RCC->AHB1ENR|=0XF<<3; //使能PD,PE,PF,PG时钟 RCC->AHB1ENR|=1<<1; //使能PB时钟 RCC->AHB3ENR|=1<<0; //使能FSMC时钟 GPIO_Set(GPIOB,PIN15,GPIO_MODE_OUT,GPIO_OTYPE_PP,GPIO_SPEED_50M,GPIO_PUPD_PU); //PB15 推挽输出,控制背光 GPIO_Set(GPIOD,(3<<0)|(3<<4)|(7<<8)|(3<<14),GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU); //PD0,1,4,5,8,9,10,14,15 AF OUT GPIO_Set(GPIOE,(0X1FF<<7),GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU); //PE7~15,AF OUT GPIO_Set(GPIOF,PIN12,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU); //PF12,FSMC_A6 GPIO_Set(GPIOG,PIN12,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU); //PG12,FSMC_NE4 GPIO_AF_Set(GPIOD,0,12); //PD0,AF12 GPIO_AF_Set(GPIOD,1,12); //PD1,AF12 GPIO_AF_Set(GPIOD,4,12); //PD4,AF12 GPIO_AF_Set(GPIOD,5,12); //PD5,AF12 GPIO_AF_Set(GPIOD,8,12); //PD8,AF12 GPIO_AF_Set(GPIOD,9,12); //PD9,AF12 GPIO_AF_Set(GPIOD,10,12); //PD10,AF12 GPIO_AF_Set(GPIOD,14,12); //PD14,AF12 GPIO_AF_Set(GPIOD,15,12); //PD15,AF12 GPIO_AF_Set(GPIOE,7,12); //PE7,AF12 GPIO_AF_Set(GPIOE,8,12); //PE8,AF12 GPIO_AF_Set(GPIOE,9,12); //PE9,AF12 GPIO_AF_Set(GPIOE,10,12); //PE10,AF12 GPIO_AF_Set(GPIOE,11,12); //PE11,AF12 GPIO_AF_Set(GPIOE,12,12); //PE12,AF12 GPIO_AF_Set(GPIOE,13,12); //PE13,AF12 GPIO_AF_Set(GPIOE,14,12); //PE14,AF12 GPIO_AF_Set(GPIOE,15,12); //PE15,AF12 GPIO_AF_Set(GPIOF,12,12); //PF12,AF12 GPIO_AF_Set(GPIOG,12,12); //PG12,AF12 //寄存器清零 //bank1有NE1~4,每一个有一个BCR+TCR，所以总共八个寄存器。 //这里我们使用NE1 ，也就对应BTCR[0],[1]。 FSMC_Bank1->BTCR[6]=0X00000000; FSMC_Bank1->BTCR[7]=0X00000000; FSMC_Bank1E->BWTR[6]=0X00000000; //操作BCR寄存器 使用异步模式 FSMC_Bank1->BTCR[6]|=1<<12; //存储器写使能 FSMC_Bank1->BTCR[6]|=1<<14; //读写使用不同的时序 FSMC_Bank1->BTCR[6]|=1<<4; //存储器数据宽度为16bit //操作BTR寄存器 //读时序控制寄存器 FSMC_Bank1->BTCR[7]|=0<<28; //模式A FSMC_Bank1->BTCR[7]|=0XF<<0; //地址建立时间（ADDSET）为16个HCLK 1/168M=6ns*16=96ns //因为液晶驱动IC的读数据的时候，速度不能太快。 FSMC_Bank1->BTCR[7]|=24<<8; //数据保存时间为25个HCLK =6*25=150ns //写时序控制寄存器 FSMC_Bank1E->BWTR[6]|=0<<28; //模式A FSMC_Bank1E->BWTR[6]|=8<<0; //地址建立时间（ADDSET）为8个HCLK =48ns //4个HCLK（HCLK=168M）,某些液晶驱动IC的写信号脉宽，最少也得50ns。 FSMC_Bank1E->BWTR[6]|=8<<8; //数据保存时间为6ns*9个HCLK=54ns //使能BANK1,区域4 FSMC_Bank1->BTCR[6]|=1<<0; //使能BANK1，区域1 delay_ms(50); // delay 50 ms LCD_WriteReg(0x0000,0x0001); delay_ms(50); // delay 50 ms lcddev.id = LCD_ReadReg(0x0000); [/mw_shl_code]

rgzdb

谢谢，回去验证。。。。