我使用的STM32F103VBT6这款芯片,K9F1G08U0B和 STM32F103VBT6连接接口有如下对应关系: ALE——PA1 WE——PA2   WP——PA3 RB——PC0 RE——PC1 CE——PC2  CLE——PC3
8位IO口对应PE0——PE7 下面4个函数，对应的是读取设备的ID，我在main函数里调用函数Nand_Flash_ReadDeviceID(); 则会从串口打印出DeviceID = ec f1 0 95 40，这个设备ID号是正确的。问题在下面。 /*************************** 写指令函数 ***************************/ void Nand_FlashCommandLatch(uint8_t CommandTypes) {
Data_PortOutputMode(); Flash_CE_Low; Flash_CLE_Low; Flash_ALE_Low; Flash_WE_High; Flash_CLE_High; Flash_WE_Low; Data_Output(CommandTypes); Flash_WE_High; Flash_CLE_Low; Flash_ALE_High; Flash_CE_High; } /**************************** 设置地址函数 ****************************/ void Nand_Flash_Write_Address(uint32_t Address) { Data_PortOutputMode();
Flash_CE_Low; Flash_CLE_Low; Flash_WE_High; Flash_ALE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output((Address)); Flash_WE_High; Flash_ALE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output((Address >> 8) & 0x0f); Flash_WE_High; Flash_ALE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output((Address >> 12) & 0xFF); Flash_WE_High; Flash_ALE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output((Address >> 20) & 0xFF); Flash_WE_High; Flash_ALE_Low; Flash_CE_High; } /******************************* 用来读设备的ID *******************************/ void Nand_FlashReadData(uint8_t *pBuffer,uint32_t rd_Length) { uint32_t i = 0; Data_PortInputMode(); Flash_CE_Low; while(rd_Length--) { Flash_RE_Low; *(pBuffer + i) = Data_Input; Flash_RE_High; i++; } Flash_RE_High; Flash_CE_High;
} /*读设备ID函数*/ void Nand_Flash_ReadDeviceID(void) {
uint8_t array[5]; Nand_FlashCommandLatch(0x90); Nand_Flash_Write_Address(0x00); Nand_FlashReadData(array,5); printf("DeviceID = %x %x %x %x %x ",array[0],array[1],array[2],array[3],array[4]); }
下面的两个函数分别是向一页中写数据的函数和从一页中读出数据，我是对照K9F1G08U0D数据手册中Page Program Operation的时序和Read Operation的时序写的， 虽然我用的是K9F1G08U0B，但我觉得这两个应该时序上差别，我在main函数里面执行红 {MOD}标记的代码，从串口打印出的数据如下： Nand_FlashPage_Program is Error Page 0 data:0xff 0x1e 0xf0 0x0 0x7 0x0 0xe0 0x0 0x7 0x18
而我写入的数据为 uint8_t arr[]="0123456789";
哪位大侠遇到过这样的问题，帮小弟解决一下，到底我的写错在哪里还是我的操作顺序有问题呢？


/**************************** 向某一页中写数据 ****************************/
bool Nand_FlashPage_Program(uint32_t PageNumber,uint8_t *string) { uint8_t regvalue = 0; uint32_t i=2048,j=0; uint32_t Address = PageNumber*2048; uint8_t *pBuffer=string; Data_PortOutputMode(); Flash_CE_Low; Flash_ALE_Low; Flash_RE_High; Flash_CLE_High; Flash_WE_Low; Data_Output(0x80); Flash_WE_High; Flash_CLE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output((Address)); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 8) & 0x0F); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 12) & 0xFF); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 20) & 0xFF); Flash_WE_High; Flash_ALE_Low;
while(i--) { Flash_WE_Low; Data_Output(*(pBuffer + j)); Flash_WE_High; j++; } Flash_WE_Low; Flash_CLE_High; Data_Output(0x10); Flash_WE_High; Flash_Wait(); Flash_WE_Low; Data_Output(0x70); Flash_WE_High; Flash_CLE_Low; Data_PortInputMode(); Flash_RE_Low; regvalue = Data_Input; Flash_RE_High; if(!( (1 << 0) & regvalue)) {
return TRUE; } else { return FALSE; } } /********************* 从一页中读出数据 *********************/
void Nand_Flash_ReadOnePage(uint32_t sc_address,uint8_t *string) { uint32_t Address = 2048*sc_address; uint32_t i=2048,j=0; uint8_t dat; Data_PortOutputMode(); //Flash_CLE_Low; //Flash_CE_High; //Flash_WE_High; Flash_CE_Low; Flash_ALE_Low; Flash_RE_High; Flash_CLE_High; Flash_WE_Low; Data_Output(0x00); Flash_WE_Low; Flash_WE_High; Flash_CLE_Low; Flash_ALE_High; Flash_WE_Low; Data_Output(Address); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 8) & 0x0F); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 12) & 0xFF); Flash_WE_High; Flash_WE_Low; Data_Output((Address >> 20) & 0xFF); Flash_WE_High; Flash_ALE_Low; Flash_CLE_High; Flash_WE_Low; Data_Output(0x30); Flash_WE_High; Flash_CLE_Low; Flash_Wait(); Data_PortInputMode(); while(i--) { Flash_RE_Low; *(string+j) = Data_Input; Flash_Delay(c_FlashDelayCnt); Flash_RE_High; Flash_Delay(c_FlashDelayCnt); } }

int main(void)  { uint8_t array[2112],i; bool Is_ok;         Init_RCC(); delay_init(64);     //延时函数初始化   NVIC_Configuration(); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级 uart_init(115200); Nandflash_Init();
Is_ok = Nand_FlashPage_Program(0x00,arr); if(Is_ok==TRUE) printf("Nand_FlashPage_Program is Successful "); else  printf("Nand_FlashPage_Program is Error ");
while(1) { Nand_Flash_ReadOnePage(0x00,array); printf("Page 0 data:"); for(i=0;i<10;i++) { printf("0x%x ",array); } printf(" "); delay_ms(1000);   }  }

这是我的nandflash初始化函数
void Nandflash_Init() { GPIO_InitTypeDef  GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;   GPIO_Init(GPIOA, &GPIO_InitStructure);     GPIO_SetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;   GPIO_Init(GPIOC, &GPIO_InitStructure);     GPIO_SetBits(GPIOC,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIOE->CRL = 0x33333333; Flash_WP_High; }