FSMC总线驱动st7920屏没有反应

sapoiuyt

使用的是12864的st7920屏,现在用F407驱动。但是屏没有反应。

使用的是8位数据屏，我已经修改FSMC的传输数据宽度。

lcd的base地址用的是这个
不知道这样设置可以吗?

sapoiuyt

??? 不能上传图片？

sapoiuyt

        writeTiming.FSMC_AddressSetupTime =0x00;              //µØÖ·½¨Á¢Ê±¼ä£¨ADDSET£©Îª9¸öHCLK =54ns
  writeTiming.FSMC_AddressHoldTime = 0x00;         //µØÖ·±£³Öʱ¼ä£¨A               
  writeTiming.FSMC_DataSetupTime = 0x03;                 //Êý¾Ý±£´æʱ¼äΪ6ns*9¸öHCLK=54ns
  writeTiming.FSMC_BusTurnAroundDuration = 0x00;
  writeTiming.FSMC_CLKDivision = 0x00;
  writeTiming.FSMC_DataLatency = 0x00;
  writeTiming.FSMC_AccessMode = FSMC_AccessMode_A;         //ģʽA
       
        FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;//  ÕâÀïÎÒÃÇʹÓÃNE4 £¬Ò²¾Í¶ÔÓ¦BTCR[6],[7]¡£
  FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // ²»¸´ÓÃÊý¾ÝµØÖ·
  FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM;  //SRAM   
  FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;//´æ´¢Æ÷Êý¾Ý¿í¶ÈΪ16bit   
  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;        //  ´æ´¢Æ÷дʹÄÜ
  FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;   
  FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable; // ¶ÁдʹÓÃͬµÄʱÐò
  FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &writeTiming; //¶ÁдʱÐò
  FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming;  //дʱÐò

sapoiuyt

//LCDµØÖ·½á¹¹Ìå
typedef struct
{
        vu8 LCD_REG;
        vu8 LCD_RAM;
} LCD_TypeDef;
//ʹÓÃNOR/SRAMµÄ Bank1.sector4,µØַλHADDR[27,26]=11 A6×÷ΪÊý¾ÝÃüÁîÇø·ÖÏß
//×¢ÒâÉèÖÃʱSTM32ÄÚ²¿»áÓÒÒÆһλ¶ÔÆä! 111 1110=0X7E                            
#define LCD_BASE        ((u32)(0x6c000000 | 0x0000003F))
#define LCD             ((LCD_TypeDef *) LCD_BASE)

ihalin

有意思，我也去研究研究

ihalin

writeTiming.FSMC_AddressSetupTime =0x00;              //μØÖ·½¨á￠ê±¼ä￡¨ADDSET￡©Îa9¸öHCLK =54ns
  writeTiming.FSMC_AddressHoldTime = 0x00;         //μØÖ·±￡3Öê±¼ä￡¨A               
  writeTiming.FSMC_DataSetupTime = 0x03;                 //êy¾Y±￡′æê±¼äÎa6ns*9¸öHCLK=54ns
  writeTiming.FSMC_BusTurnAroundDuration = 0x00;
  writeTiming.FSMC_CLKDivision = 0x00;
  writeTiming.FSMC_DataLatency = 0x00;
  writeTiming.FSMC_AccessMode = FSMC_AccessMode_A;         //Ä￡ê½A


这里的时间没设置好吧