做一个简单的只能避障小车吧。。。先简单的做起，比如实现直线走到，然后测障碍物的距离，并显示出来，然后慢慢加模块，加功能。。。最后最好移植一个ucos系统上去跑。。。。这样就能学到东西啦
你这个需求可以使用popen()来实现。
FILE file = popen("/linphonec", "w");
fwrite("call xxxx\r\n", 11, file);
fwrite("terminate\r\n", 11, file);
pclose(file);
你可以在QT的按钮slot里向file写入命令，这些命令就能传到linphone的stdin。
这么做的不足 1 popen只能打开单向管道 因此你读不到linphone的输出结果。2 popen在较低版本的uclibc上不是thread safe的
变通的办法是你改一下linphone，调用freopen来重定向自己的stdin和stdout
不过我觉得你最好还是改改linphone，集成到你的QT程序里算了，也不麻烦
你可以自己写一个汇编的程序，把Nand Flash 中的程序搬到SDRAM中。因为S3C2410有Nor Flash和Nand Flash有两种启动方式，所以在搬移过程中略有不同。如果用Nand Flash启动可以使用下面的代码，至于Nor Flash启动就相对简单了，你可以自己研究一下。
文件1heads
@ 文件 heads
@ 作用:关闭看门狗、SDRAM 的初始化设置、搬移 Nand Flash 4K 以后
@ 的代码到 SDRAM 的指定位置、执行 SDRAM 中的代码
text
global _start
_start:
ldr r0, =0x53000000 @ Close Watch Dog Timer
mov r1, #0x0
str r1, [r0]
bl memory_setup @ Initialize memory setting
bl flash_to_sdram @ Copy code to sdram
ldr sp, =0x34000000 @ Set stack pointer
ldr pc, =main @ execute the code in SDRAM
文件2：flashs
@ 文件 flashs
@ 作用:设置 Nand Flash 的控制寄存器、读取 Nand Flash
@ 中的代码到 SDRAM 的指定位置
equ NFCONF, 0x4e000000
equ NFCMD, 0x4e000004
equ NFADDR, 0x4e000008
equ NFDATA, 0x4e00000c
equ NFSTAT, 0x4e000010
equ NFECC, 0x4e000014
global flash_to_sdram
flash_to_sdram:
@ Save return addr
mov r10,lr
@ Initialize Nand Flash
mov r0,#NFCONF
ldr r1,=0xf830
str r1,[r0]
@ First reset and enable Nand Flash
ldr r1,[r0]
bic r1, r1, #0x800
str r1,[r0]
ldr r2,=NFCMD
mov r3,#0xff
str r3,[r2]
@ for delay
mov r3, #0
1:
subs r3, r3, #1
bne 1b
@ Wait until Nand Flash bit0 is 1
wait_nfstat:
ldr r2,=NFSTAT
ldr r3,[r2]
tst r3,#0x01
beq wait_nfstat
@ Disable Nand Flash
ldr r0,=NFCONF
ldr r1,[r0]
orr r1,r1,#0x8000
str r1,[r0]
@ Initialzie stack
ldr sp,=4096
@ Set arguments and call
@ function nand_read defined in nand_readc
ldr r0,=0x30000000
mov r1,#4096
mov r2,#1024
bl nand_read
@ return
mov pc,r10
文件3：interruptc
/
文件 interruptc
作用:设置并响应按键中断
/
#include "printfh"
#define GPECON ((volatile unsigned long )0x56000040)
#define GPEDAT ((volatile unsigned long )0x56000044)
#define GPEUP ((volatile unsigned long )0x56000048)
#define GPFCON ((volatile unsigned long )0x56000050)
#define GPFDAT ((volatile unsigned long )0x56000054)
#define GPFUP ((volatile unsigned long )0x56000058)
#define GPGCON ((volatile unsigned long )0x56000060)
#define GPGDAT ((volatile unsigned long )0x56000064)
#define GPGUP ((volatile unsigned long )0x56000068)
#define EINTMASK ((volatile unsigned long )0x560000a4)
#define INTMSK ((volatile unsigned long )0X4a000008)
#define PRIORITY ((volatile unsigned long )0x4a00000c)
#define EINTPEND ((volatile unsigned long )0x560000a8)
#define INTPND ((volatile unsigned long )0X4a000010)
#define SRCPND ((volatile unsigned long )0X4a000000)
#define BIT_EINT0 (0x1 << 0)
#define BIT_EINT2 (0x1 << 2)
#define BIT_EINT8_23 (0x1 << 5)
#define SET_KEY_INTERRUPT_REG() ({ \
GPGCON = (GPGCON & (~((3<<12)|(3<<4)))) | ((1<<12)|(1<<4)) ; \
GPGDAT = GPGDAT & (~((1<<6)|(1<<2))); \
GPECON = (GPECON & (~((3<<26)|(3<<22)))) | ((1<<26)|(1<<22)); \
GPEDAT = GPEDAT & (~((1<<13)|(1<<11))); \
GPGCON = (GPGCON & (~((3<<22)|(3<<6)))) | ((2<<22)|(2<<6)) ; \
GPFCON = (GPFCON & (~((3<<4)|(3<<0)))) | ((2<<4)|(2<<0)) ; \
})
__inline void ClearPending(int bit)
{
SRCPND = bit;
INTPND = bit;
}
void init_irq( ) {
GPFCON = ((0x1<<8) | (0x1 << 10) | (0x1 << 12) | (0x1 << 14)); // Set the led D9~D12 output
/
GPGCON = (GPGCON & (~((3<<12)|(3<<4)))) | ((1<<12)|(1<<4)) ; // GPGCON6,2 set output
// GPGCON6:KSCAN1
// GPGCON2:KSCAN3
GPGDAT = GPGDAT & (~((1<<6)|(1<<2))); // GPGDAT6,2 output 0
GPECON = (GPECON & (~((3<<26)|(3<<22)))) | ((1<<26)|(1<<22)); // GPECON13,11 set output
GPEDAT = GPEDAT & (~((1<<13)|(1<<11))); // GPEDAT13,11 output 0
GPGCON = (GPGCON & (~((3<<22)|(3<<6)))) | ((2<<22)|(2<<6)) ; // GPGCON11,3 set EINT
GPFCON = (GPFCON & (~((3<<4)|(3<<0)))) | ((2<<4)|(2<<0)) ; // GPFDAT2,0 set EINT
/
// Use the defined micro instead of above code
SET_KEY_INTERRUPT_REG();
GPFUP |= (1<<0) | (1<<2); // Up
GPGUP |= (1<<3) | (1<<11); // Up
EINTPEND |= (1 << 19) | (1 << 11); // Clear eint 11,19
EINTMASK &= (~((1 << 19) | (1 << 11))); // Enable EINT11,19
ClearPending(BIT_EINT0|BIT_EINT2|BIT_EINT8_23); // Enable EINT0,2 and the EINT8_23
INTMSK &= (~0x25);
return;
}
int Key_Scan( void )
{
int i;
for(i = 0; i < 1000 ;i++) ;
GPGDAT = (GPGDAT &(~((1<<6)|(1<<2)))) | (1<<6) | (0<<2) ; //GPG6,2 output 0
GPEDAT = (GPEDAT &(~((1<<13)|(1<<11)))) | (1<<13) | (1<<11) ; //GPE13,11 output 0
if( (GPFDAT&(1<< 0)) == 0 ) return 16 ;
else if( (GPFDAT&(1<< 2)) == 0 ) return 15 ;
else if( (GPGDAT&(1<< 3)) == 0 ) return 14 ;
else if( (GPGDAT&(1<<11)) == 0 ) return 13 ;
GPGDAT = (GPGDAT &(~((1<<6)|(1<<2)))) | (0<<6) | (1<<2) ; //GPG6,2 output 0
GPEDAT = (GPEDAT & (~((1<<13)|(1<<11)))) | (1<<13) | (1<<11) ; //GPE13,11 output 0
if( (GPFDAT&(1<< 0)) == 0 ) return 11 ;
else if( (GPFDAT&(1<< 2)) == 0 ) return 8 ;
else if( (GPGDAT&(1<< 3)) == 0 ) return 5 ;
else if( (GPGDAT&(1<<11)) == 0 ) return 2 ;
GPGDAT = (GPGDAT & (~((1<<6)|(1<<2)))) | (1<<6) | (1<<2) ; //GPG6,2 output 0
GPEDAT = (GPEDAT & (~((1<<13)|(1<<11)))) | (1<<13) | (0<<11) ; //GPE13,11 output 0
if( (GPFDAT&(1<< 0)) == 0 ) return 10 ;
else if( (GPFDAT&(1<< 2)) == 0 ) return 7 ;
else if( (GPGDAT&(1<< 3)) == 0 ) return 4 ;
else if( (GPGDAT&(1<<11)) == 0 ) return 1 ;
GPGDAT = (GPGDAT & (~((1<<6)|(1<<2)))) | (1<<6) | (1<<2) ; //GPG6,2 output 0
GPEDAT = (GPEDAT & (~((1<<13)|(1<<11)))) | (0<<13) | (1<<11) ; //GPE13,11 output 0
if( (GPFDAT&(1<< 0)) == 0 ) return 12 ;
else if( (GPFDAT&(1<< 2)) == 0 ) return 9 ;
else if( (GPGDAT&(1<< 3)) == 0 ) return 6 ;
else if( (GPGDAT&(1<<11)) == 0 ) return 3 ;
else return 0xff ;
}
void EINT_Handle( void ) {
GPGCON = (GPGCON & (~((3<<22)|(3<<6)))) | ((0<<22)|(0<<6)) ; //GPG11,3 set input
GPFCON = (GPFCON & (~((3<<4)|(3<<0)))) | ((0<<4)|(0<<0)) ; //GPF2, 0 set input
if(INTPND==BIT_EINT8_23) {
if(EINTPEND&(1<<11))
EINTPEND |= 1<< 11;
if(EINTPEND&(1<<19))
EINTPEND |= 1<< 19;
ClearPending(BIT_EINT8_23);
}
else if(INTPND==BIT_EINT0) {
ClearPending(BIT_EINT0);
} else if(INTPND==BIT_EINT2) {
ClearPending(BIT_EINT2);
}
int key = Key_Scan() ;
if( key != 0xff ) {
uart_printf( "K%d is pressed!\n", key ) ;
GPFDAT = ~(key << 4);
}
SET_KEY_INTERRUPT_REG();
return;
}
文件4：mems
@ 文件 mems
@ 作用:SDRAM 的初始化设置
@ 关于初始化的更多细节，请参考我的前一篇随笔
global memory_setup @ 导出 memory_setup, 使其对链接器可见
memory_setup:
mov r1, #0x48000000
adrl r2, mem_cfg_val
add r3, r1, #134
1:
@ write initial values to registers
ldr r4, [r2], #4
str r4, [r1], #4
cmp r1, r3
bne 1b
mov pc, lr
align 4
mem_cfg_val:
long 0x22111110 @ BWSCON
long 0x00000700 @ BANKCON0
long 0x00000700 @ BANKCON1
long 0x00000700 @ BANKCON2
long 0x00000700 @ BANKCON3
long 0x00000700 @ BANKCON4
long 0x00000700 @ BANKCON5
long 0x00018005 @ BANKCON6
long 0x00018005 @ BANKCON7 9bit
long 0x008e07a3 @ REFRESH
long 0x000000b2 @ BANKSIZE
long 0x00000030 @ MRSRB6
long 0x00000030 @ MRSRB7
文件5：nand_readc
/ 文件 nand_readc
作用:从 Nand Flash 中读取一块数据到 SDRAM 中的指定位置
/
#define NFCONF ((volatile unsigned long )0x4e000000)
#define NFCMD ((volatile unsigned long )0x4e000004)
#define NFADDR ((volatile unsigned long )0x4e000008)
#define NFDATA ((volatile unsigned long )0x4e00000c)
#define NFSTAT ((volatile unsigned long )0x4e000010)
#define NFECC ((volatile unsigned long )0x4e000014)
#define NAND_SECTOR_SIZE 512
#define NAND_BLOCK_MASK 0x1ff
void wait_idle() {
int i;
for (i = 0; i < 50000; ++i) ;
}
int nand_read(unsigned char buf, unsigned long start_addr, int size){
int i, j;
/
detect the argument
/
if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK)) {
return -1;
}
/ chip Enable /
NFCONF &= ~0x800;
for (i=0; i<10; i++) {
;
}
for (i=start_addr; i < (start_addr + size); i+=NAND_SECTOR_SIZE) {
NFCMD = 0;
/ Write Address /
NFADDR = i & 0xff;
NFADDR = (i >> 9) & 0xff;
NFADDR = (i >> 17) & 0xff;
NFADDR = (i >> 25) & 0xff;
wait_idle();
for(j=0; j < NAND_SECTOR_SIZE; j++) {
buf++ = (NFDATA & 0xff);
}
}
NFCONF |= 0x800; / chip disable /
return 0;
}
文件6：sdramc
/ 文件 sdramc
作用:循环点 FS2410 开发板上的 D9、D10、D11、D12
四个发光二极管。
/
#define GPFCON ((volatile unsigned long )0x56000050)
#define GPFDAT ((volatile unsigned long )0x56000054)
int main()
{
int i,j;
while(1) {
for (i = 0; i <4; ++i) {
GPFCON = 0x1<<(8+i2);
GPFDAT = 0x0;
// for delay
for(j=0;j<50000;++j) ;
}
}
}
文件7：nandlds
SECTIONS {
first 0x00000000 : { heado memo flasho nand_reado }
second 0x30000000 : AT(4096) { sdramo }
}
文件8：Makefile
sdram:heads flashs mems sdramc
arm-linux-gcc -c -o heado heads
arm-linux-gcc -c -o memo mems
arm-linux-gcc -c -o flasho flashs
arm-linux-gcc -c -o nand_reado nand_readc
arm-linux-gcc -c -o sdramo sdramc
arm-linux-ld -Tnandlds heado memo flasho nand_reado sdramo -o sdram_tmpo
arm-linux-objcopy -O binary -S sdram_tmpo sdram
clean:
rm -f o
rm -f sdram
好了，你把这些文件拷下去，执行make命令就能生成可执行的二进制代码sdram，把sdram烧写到板子上就能运行了。祝你好运
以上就是关于在校大学生，想用ARM芯片stm32做一个项目，但是不知道可以做什么....希望过来人给点点子..谢谢了全部的内容，包括:在校大学生，想用ARM芯片stm32做一个项目，但是不知道可以做什么....希望过来人给点点子..谢谢了、arm上的QT用qprocess调用外部程序（linphone），但是这个程序的运行需要在命令行里输入命令才能实现。、编写一段ARM程序，实现数据块复制等相关内容解答，如果想了解更多相关内容，可以关注我们，你们的支持是我们更新的动力！
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