FSMC_AccessMode = FSMC_AccessMode_A; readWriteTiming.FSMC_AddressHoldTime = 0; readWriteTiming.FSMC_AddressSetupTime = 0; readWriteTiming.FSMC_BusTurnAroundDuration = 0; readWriteTiming.FSMC_CLKDivision = 0; readWriteTiming.FSMC_DataLatency = 0; readWriteTiming.FSMC_DataSetupTime = 8; /* ...
Access mode(存储器访问模式):选A,LCD控制器使用 Mode A ,该模式用来控制SRAM/PSRAM且OE会翻转。控制异步 NOR FLASH 时使用 B 模式。 5.1.2 FSMC写时序配置 NOR/PSRAM timing for write accesses(FSMC写时序配置): Extended address setup time(地址建立时间):填0 Extended data setup time(数据建立时间):填1...
其中NOR/PSRAM timing是读速率有关参数,NOR/PSRAM timing for write accesses是写速率有关参数。 ILI9341驱动芯片的引脚电平时序逻辑与stm32f407 FSMC中的A模式是对应的,因此Access mode都选为A。而其他几个参数的配置与该驱动芯片的电气特性和个人对stm32f407芯片时钟速率的配置有关,需要查看两个芯片的datasheet来...
readWriteTiming.FSMC_AccessMode=FSMC_AccessMode_A;//模式A //写时序 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_Bu...
TurnAroundDuration = 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 ...
其他位都与stm32f2xx_fsmc.h结构体中成员变量相对应，不在赘言。（2）FSMC_BTR 这是BCR控制寄存器的32位分配图。注意其中第28~29位。手册如下解释：Bits 29:28 ACCMOD: Access mode（访问模式选择：A\B\C\D）Specifies the asynchronous access modes as shown in the timing ...
FSMC_BTRBCR3228~29释:Bits29:28ACCMOD:Accessmode〔访问模式选择:A\B\C\D〕Specifiestheasynchronousaccessmodesasshowninthetimingdiagrams.ThesebitsareaccountonlywhentheEXTMODbitintheFSMC_BCRxregisteris1.00:accessmodeA01:accessmodeB10:accessmodeC11:accessmodeD这里的模式选择要与外部存储器相匹配。数据地址复用...
FSMC Ax:用在LCD显示RAM和寄存器之间进行选择的地址线,即该线用于选择LCD的RS脚,该线可用地址线的任意一根线,范围:FSMC_A[25:0]。 注:RS = 0时,表示读写寄存器;RS = 1表示读写数据RAM。 举例1:选择NOR的第一个存储区,并且使用FSMC_A16来控制LCD的RS引脚,则我们访问LCD显示RAM的基址为0x6002 0000,访问...
readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A writeTiming.FSMC_AddressSetupTime = 0x00; //地址建立时间(ADDSET)为1个HCLK writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间(A writeTiming.FSMC_DataSetupTime = 0x03; 数据保存时间为4个HCLK ...
手册如下解 释:Bits 29:28 ACCMOD: Access mode (访问模式选择:ABCD)Specifies the asynchronous access modes as shown in the timing diagrams. These bits are00: access mode A01: a 4、ccess mode B10: access mode C11: access mode D后面会分别讲一下这四个访问模式Address offeet: OxAOCO 0000 + ...