各位大神 请教一下，stm32f767使用QSPI实现内存映射的问题
我想通过原子的stm32f767的探索版，调试spi的内存映射功能，参照769的官方历程修改的，但是出来的数据一直不正确，这个是映射配置的代码往w25q256里写的代码算是原子的历程，
变量的初始化
const u8 TEXT_Buffer[]={"Apollo STM32F7 QSPI TEST"};
#define SIZE sizeof(TEXT_Buffer)
__IO uint8_t buf,*p
while(1)
{
if(key==KEY2_PRES)//KEY0按下,读取字符串并显示
{
LCD_Fill(0,170,239,319,WHITE);//清除半屏
LCD_ShowString(30,170,200,16,16,"OSPI Start Read QSPI.... ");
Memory_Mapped_Enable(4);
x=0;
memset(datatemp,0,sizeof(TEXT_Buffer));
while(1)
{
if(*qspi_addr==0)
{
break;
}
datatemp = *qspi_addr++;
printf("datatemp :%c",datatemp);
printf(" *qspi_addr:%4d",*qspi_addr);
printf(" qspi_addr:%x\r\n",qspi_addr);
}
printf("x = %d",x);
LCD_ShowString(30,170,200,16,16,"The qspi Data Readed Is: "); //提示传送完成
LCD_ShowString(30,230,200,16,16,datatemp); //显示读到的字符串
}
}
//使能内存映射.
u8 Memory_Mapped_Enable(u32 dummyCycles)
{
QSPI_CommandTypeDef s_command; //命令结构体
QSPI_MemoryMappedTypeDef s_mem_mapped_cfg; //内存映射 配置结构体
/* Configure the command for the read instruction */
s_command.InstructionMode = QSPI_INSTRUCTION_1_LINE; //指令模式 单线传输数据
s_command.Instruction = Fast_Read_Quad; //指令 具体的指令
s_command.AddressMode = QSPI_ADDRESS_4_LINES; //地址模式 四线传输
s_command.Address = 0;
s_command.AddressSize = QSPI_ADDRESS_24_BITS; //地址长度 24位地址
s_command.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE; //交替字节 无交替字节
s_command.AlternateBytes = 0x00;
//s_command.AlternateBytesSize = QSPI_ALTERNATE_BYTES_8_BITS;
s_command.DataMode = QSPI_DATA_4_LINES; //数据模式
//QSPI_DATA_1_LINE
s_command.NbData = 1; //每次读的字节数
s_command.DummyCycles = dummyCycles; //设置空指令周期数
s_command.DdrMode = QSPI_DDR_MODE_DISABLE; //关闭DDR模式
s_command.DdrHoldHalfCycle= QSPI_DDR_HHC_ANALOG_DELAY; //ddr模式下 数据输出延迟
s_command.SIOOMode = QSPI_SIOO_INST_EVERY_CMD; //每次都发送指令
//传输的数据个数
/* Configure the memory mapped mode */
s_mem_mapped_cfg.TimeOutActivation = QSPI_TIMEOUT_COUNTER_DISABLE;
s_mem_mapped_cfg.TimeOutPeriod = 0;
if (HAL_QSPI_MemoryMapped(&QSPI_Handler, &s_command, &s_mem_mapped_cfg) != HAL_OK)
{
printf("HAL_QSPI_MemoryMapped Fail \r\n ");
return 1;
}
else
{
printf("HAL_QSPI_MemoryMapped Sucess \r\n ");
return 0;
}
}
恳求哪位大神帮我看看 是哪里出现错了
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