[求助]关于LPC2378的EMC

amartya

我跑了下周立功的例程，总是出现错误。单字节操作的时候正常，多字节操作的时候总是出现错误。
就是如果定义成
#define DATA1? (*(volatile unsigned char *)(0x80000000))
，结果就正确
定义成
#define DATA1? (*(volatile unsigned?int *)(0x80000000))
结果就出现错误。
比如你想写的是0x7890ABCD，
但是读出的确是：0x78787878
代码如下：
#include "config.h"
#define DATA1? (*(volatile unsigned char *)(0x80000000))
#define DATA2? (*(volatile unsigned char *)(0x80000040))
#define DATA3? (*(volatile unsigned char *)(0x80000080))

#define ADDR16?1

斯嘉丽

好专业，有没有专家来说说？

bjluhaijun

这样就可以读到正确的32位了
EMC_CTRL = 0x00000001;
PCONP |= 0x00000800;
PINSEL4 = 0x50000000;
PINSEL5 = 0x05050555;
PINSEL6 = 0x00005555;
PINSEL8 = 0x55555555;
PINSEL9 = 0x50090000;
EMC_STA_CFG0 = 0x00000000;
EMC_STA_WAITWEN0 = 0x2;
EMC_STA_WAITOEN0 = 0x2;
EMC_STA_WAITRD0 = 0x1f;
EMC_STA_WAITPAGE0 = 0x1f;
EMC_STA_WAITWR0 = 0x1f;
EMC_STA_WAITTURN0 = 0xf;
只能读写SRAM,不能读写FRAM

freedomzlp

请问 为什么并行铁电不能读写数据！！~~~