nand sram fsmc bus falut！

发布于 2013-04-15 15:02:51 浏览：4376 订阅该版

```  | /
- RT -     Thread Operating System
 / |      1.1.0 build Apr 15 2013
 2006 - 2012 Copyright by rt-thread team
finsh>>TCP/IP initialized!
SPI File System initialized!
os  : system memory alloc 320 bytes
flsh: UFFS consume spare data size 14
os  : system memory alloc 20880 bytes
os  : system memory alloc 6288 bytes
os  : system memory alloc 16384 bytes
psr: 0x21000000
 pc: 0x08001274
 lr: 0x0800bba3
r12: 0x00000000
r03: 0xffffffff
r02: 0x80010000
r01: 0x00000008
r00: 0x00000000
bus fault:
SCB_CFSR_BFSR:0x04 IMPRECISERR 
hard fault on thread: init
 thread  pri  status      sp     stack size max used   left tick  error
-------- ---- ------- ---------- ---------- ---------- ---------- ---
tcpip    0x0c ready   0x000000e0 0x00000400 0x00000170 0x00000014 000
phy      0x1e ready   0x000000cc 0x00000200 0x000000cc 0x00000002 000
etx      0x0f ready   0x000000e0 0x00000200 0x00000100 0x00000010 000
erx      0x0f suspend 0x00000100 0x00000200 0x00000100 0x00000010 000
tidle    0x1f ready   0x000000dc 0x00000400 0x000000dc 0x0000001c 000
tshell   0x14 suspend 0x000000fc 0x00000800 0x000000fc 0x0000000a 000
test     0x0b suspend 0x000000f8 0x00000400 0x000000f8 0x00000005 000
init     0x08 ready   0x00000198 0x00000800 0x000003d0 0x0000000e 000```
网上查了一下是不精确的数据总线错误，这种错误是SRAM与nand flash 的时序设置不正常引起的吗？如何具体设置他们的时序呢？K9F1G08U0B IS61LV51216的地址建立时间与数据建立时间是怎么计算的呢
sram作为系统heap使用，在挂载uffs的时候出现了总线错误！