本帖最后由 zhanghua 于 2024-5-21 10:22 编辑
STC8H08K64U 执行定时器掉电唤醒代码后,单片机再也检测不到了
重新上下电,用ISP软件也无法检测,如何解决?
是不是插上串口程序就休眠,然后根本没时间响应下载?
- #include "reg51.h"
- #include "intrins.h"
-
- sfr WKTCL = 0xaa;
- sfr WKTCH = 0xab;
-
- sfr P0M1 = 0x93;
- sfr P0M0 = 0x94;
- sfr P1M1 = 0x91;
- sfr P1M0 = 0x92;
- sfr P2M1 = 0x95;
- sfr P2M0 = 0x96;
- sfr P3M1 = 0xb1;
- sfr P3M0 = 0xb2;
- sfr P4M1 = 0xb3;
- sfr P4M0 = 0xb4;
- sfr P5M1 = 0xc9;
- sfr P5M0 = 0xca;
-
- sbit P11 = P1^1;
-
- void main()
- {
- P0M0 = 0x00;
- P0M1 = 0x00;
- P1M0 = 0x00;
- P1M1 = 0x00;
- P2M0 = 0x00;
- P2M1 = 0x00;
- P3M0 = 0x00;
- P3M1 = 0x00;
- P4M0 = 0x00;
- P4M1 = 0x00;
- P5M0 = 0x00;
- P5M1 = 0x00;
-
- WKTCL = 0xff; //设定掉电唤醒时钟约为1秒钟
- WKTCH = 0x87;
-
- while (1)
- {
- _nop_();
- _nop_();
- PCON = 0x02; //MCU进入掉电模式
- _nop_();
- _nop_();
- _nop_();
- _nop_();
- P11 = ~P11;
- }
- }
-
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