共2条
1/1 1 跳转至页
IO 请教为什么调试中无法向IO寄存器写值
问
我用2812 的片子,编写了下面的一个小程序测试IO口:
void main()
{
volatile unsigned int* GPAMUX = (volatile unsigned int*)0x70C0;
volatile unsigned int* GPADIR = (volatile unsigned int*)0x70C1;
volatile unsigned int* GPAQUAL= (volatile unsigned int*)0x70C3;
volatile unsigned int* GPADAT = (volatile unsigned int*)0x70E0;
volatile unsigned int* GPASET = (volatile unsigned int*)0x70E1;
volatile unsigned int* GPACLEAR= (volatile unsigned int*)0x70E2;
volatile unsigned int* GPATOGGLE= (volatile unsigned int*)0x70E3;
int a;
*GPAMUX =0x0000;
*GPADIR =0xFFFF;
*GPADAT =0x0505;
}
在调试时通过view-〉memory来观察以上几个寄存器的值,很可惜看不到有任何变化,万分不解,请高手指点 答 1: 看看GEL,是不是使能相关地址的读写 答 2: 谢谢问题解决了是ALLOW位的问题,只要对allow位置位 ,我不清楚受allow位影响的寄存器有哪些,我在手册上 没找到 ,能不能告知一二
void main()
{
volatile unsigned int* GPAMUX = (volatile unsigned int*)0x70C0;
volatile unsigned int* GPADIR = (volatile unsigned int*)0x70C1;
volatile unsigned int* GPAQUAL= (volatile unsigned int*)0x70C3;
volatile unsigned int* GPADAT = (volatile unsigned int*)0x70E0;
volatile unsigned int* GPASET = (volatile unsigned int*)0x70E1;
volatile unsigned int* GPACLEAR= (volatile unsigned int*)0x70E2;
volatile unsigned int* GPATOGGLE= (volatile unsigned int*)0x70E3;
int a;
*GPAMUX =0x0000;
*GPADIR =0xFFFF;
*GPADAT =0x0505;
}
在调试时通过view-〉memory来观察以上几个寄存器的值,很可惜看不到有任何变化,万分不解,请高手指点 答 1: 看看GEL,是不是使能相关地址的读写 答 2: 谢谢问题解决了是ALLOW位的问题,只要对allow位置位 ,我不清楚受allow位影响的寄存器有哪些,我在手册上 没找到 ,能不能告知一二
共2条
1/1 1 跳转至页
回复
| 有奖活动 | |
|---|---|
| 硬核工程师专属补给计划——填盲盒 | |
| “我踩过的那些坑”主题活动——第002期 | |
| 【EEPW电子工程师创研计划】技术变现通道已开启~ | |
| 发原创文章 【每月瓜分千元赏金 凭实力攒钱买好礼~】 | |
| 【EEPW在线】E起听工程师的声音! | |
| 高校联络员开始招募啦!有惊喜!! | |
| 【工程师专属福利】每天30秒,积分轻松拿!EEPW宠粉打卡计划启动! | |
| 送您一块开发板,2025年“我要开发板活动”又开始了! | |
我要赚赏金
