beishen2009 发表于 2024-9-12 08:37
现在可以断定是出在定时器上面 还不知道如何兼容 89c51rd+的 定时器代码 请问有知道的大哥吗 ...
You need to drill into the details.Which timer(s) do you use ?
本帖最后由 beishen2009 于 2024-9-13 10:59 编辑
定时器0工作方式1 啊 大哥 求指教啊
void T0_time() interrupt 1
main（）{
TMOD=0X01; //设置定时器0工作方式1
TH0=(65536-50000)/256; //重装值，12MHz定时50ms的数值为50000
TL0=(65536-50000)%256;
EA=1; //开总中断
ET0=1;
外while(1){}
}
本帖最后由 jmg 于 2024-9-13 12:57 编辑
beishen2009 发表于 2024-9-13 10:56
定时器0工作方式1 啊 大哥 求指教啊
void T0_time() interrupt 1
What code is inside your T0 interrupt ?
How close is the interrupt to working ?If you have 12MHz SysCLK and the correct /12 prescaler, you should have 50ms ?
I am looking at STC8H series, as that is a more modern choice. Because you need to make small changes anyway, it is best to move to cheapest/newest, at the same time.
You are using mode 01, which should be ok, but there is a better reload mode = 00, that does not need interrupt re loading at all.
STC8H:
Note the reload registers RL_TH0, RL_TL0, need TR0 = 0 to access them, then you set TR0 = 1 after they are loaded.
A quick easy test is to toggle a pin inside the interrupt with simple test code initially.
Note the STC8H has CLKDIV and the STC11F has CLK_DIV that are defined at ISP program time, and the default PORT RESET mode is different.
Addit: If you want the old 8051 pinout, the STC8H will not fit, so the STC11 is better choice. You should define CLK_DIV and RST pin features for STC11
本帖最后由 jmg 于 2024-9-13 13:05 编辑
You should also look at the SFR maps
Note CLK_DIV for SYSCLK and P0M0, P0M1 etc set port behaviors.
I think the default POR values are standrd 8051 BiDirectional port ?
谢谢啊我再试试啊