求教STM32+FSMC+CH376问题

只看该作者 · 2013-12-20 10:45

本帖最后由 daifishing 于 2013-12-20 11:10 编辑

接口连接：#CS-------FSMC_NE1
            #INT-------FSMC_NWAIT
               A0--------FSMC_A15
            #RD--------FSMC_NOE
            #WR-------FSMC_NWE
         D0-D7------FSMC_D0-FSMC_D7
接口配置：
GPIO_InitTypeDef GPIO_InitStructure;

      RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);

            RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
                           RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
                           RCC_APB2Periph_AFIO, ENABLE);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOD, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | 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);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 |GPIO_Pin_10;
      GPIO_Init(GPIOE, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
      GPIO_Init(GPIOG, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 |GPIO_Pin_5;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
      GPIO_Init(GPIOD, &GPIO_InitStructure);

FSMC配置：
FSMC_NORSRAMInitTypeDef  init;
      FSMC_NORSRAMTimingInitTypeDef  timing;

      /*-- FSMC Configuration ------------------------------------------------------*/
      /*----------------------- SRAM Bank 1 ----------------------------------------*/
      /* FSMC_Bank1_NORSRAM1 configuration */
      timing.FSMC_AddressSetupTime = 0;
      timing.FSMC_AddressHoldTime = 0;
      timing.FSMC_DataSetupTime = 2;
      timing.FSMC_BusTurnAroundDuration = 0;
      timing.FSMC_CLKDivision = 0;
      timing.FSMC_DataLatency = 0;
      timing.FSMC_AccessMode = FSMC_AccessMode_A;


      init.FSMC_Bank = FSMC_Bank1_NORSRAM1;
      init.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
      init.FSMC_MemoryType = FSMC_MemoryType_SRAM;
      init.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;
      init.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
      init.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;       /* ×¢Òâ¾É¿âÎÞÕâ¸ö³ÉÔ± */
      init.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
      init.FSMC_WrapMode = FSMC_WrapMode_Disable;
      init.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
      init.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
      init.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
      init.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
      init.FSMC_WriteBurst = FSMC_WriteBurst_Disable;

      init.FSMC_ReadWriteTimingStruct = &timing;
      init.FSMC_WriteTimingStruct = &timing;

      FSMC_NORSRAMInit(&init);

      /* - BANK 1 (of NOR/SRAM Bank 1~4) is enabled */
      FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);

地址配置：#define CH376_DAT_PORT       (*( vu32 *)0x60000000) // A15 = 0, CS = 0
      #define CH376_CMD_PORT       (*( vu32 *)0x60008000) // A15 = 1, CS = 0
配置完后测试通信
/* 测试单片机与CH376之间的通讯接口 */
// 发送测试命令
xWriteCH376Cmd(CMD11_CHECK_EXIST);
// 发送测试数据
xWriteCH376Data(0x65);
// 读数据
u8Result = xReadCH376Data();

u8Result 始终返回0x5f 求教有没有人遇到同样问题，怎么解决的啊

从上往下1：WR
         2：RD
         3：A0
         4：NE1
         5：D1（其中一位数据）

写一个数据时，写信号产生了4个周期。。。。。。这是怎么回事？
谁知道这个时序怎么配置

CH376并口时序参数：

只看该作者 · 2013-12-20 10:59

这个情况是由于timing.FSMC_AddressSetupTime = 0;和 timing.FSMC_DataSetupTime = 2;配置造成的么。。。。。我调节这两个参数始终调不出好的波形。
看逻辑分析仪的结果只要写信号（WR）产生一次（不要产生4次），应该才可以正确写入吧。。。。。。求教谁知道这个问题怎么解决