【R7F0C809】LED+TIMER+UART+键中断

ljj3166

【R7F0C809】LED+TIMER+UART+键中断 [复制链接]

 

折腾了一下午，把基本可能会用到的外设跑了一下
基本上就是GPIO、定时器、串口和按键这类
还有AD再找例程来玩吧

1、LED
这个很通用，基本上就是通用IO口模式的配置
PMx、PMCx和Px这三个寄存器就可以摆平

1. P0 |= 0x03U;<br />
2. PM0 &amp;= 0xFCU;<br />
3. PMC0 &amp;= 0xFCU;

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具体可以查询硬件手册
妹的，点这个LED1灯，花了哥3个小时，最后发现板子上这个LED1默认是断开的
坑得里焦外嫩
自己焊上吧


2、TIMER
也是很好理解，按照手册一步步配置，基本上没有大问题

1. void R_TAU0_Create(void)<br />
2. {<br />
3. &nbsp; &nbsp; TAU0EN = 1U;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* supplies input clock */<br />
4. &nbsp; &nbsp; TPS0 &amp;= 0x00U;<br />
5. &nbsp; &nbsp; /* Stop all channels */<br />
6. &nbsp; &nbsp; TT0 |= 0x0FU;<br />
7. &nbsp; &nbsp; /* Mask channel 0 interrupt */<br />
8. &nbsp; &nbsp; TMMK00 = 1U;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* disable INTTM00 interrupt */<br />
9. &nbsp; &nbsp; TMIF00 = 0U;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* clear INTTM00 interrupt flag */<br />
10. &nbsp; &nbsp;<br />
11. &nbsp; &nbsp; /* Set INTTM00 low priority */<br />
12. &nbsp; &nbsp; TMPR100 = 1U;<br />
13. &nbsp; &nbsp; TMPR000 = 1U;<br />
14. &nbsp; &nbsp;<br />
15. &nbsp; &nbsp; /* Channel 0 used as interval timer */<br />
16. &nbsp; &nbsp; TMR00H = 0x00U;<br />
17. &nbsp; &nbsp; TMR00L = 0x00U;<br />
18. &nbsp; &nbsp;<br />
19. &nbsp; &nbsp; TDR00H = 0x9CU;<br />
20. &nbsp; &nbsp; TDR00L = 0x3FU;<br />
21. &nbsp; &nbsp; TO0 &amp;= 0x0EU;<br />
22. &nbsp; &nbsp; TOE0 |= 0x01U;<br />
23. }<br />
24. <br />
25. void R_TAU0_Channel0_Start(void)<br />
26. {<br />
27. &nbsp; &nbsp; TMIF00 = 0U;&nbsp; &nbsp; /* clear INTTM00 interrupt flag */<br />
28. &nbsp; &nbsp; TMMK00 = 0U;&nbsp; &nbsp; /* enable INTTM00 interrupt */<br />
29. &nbsp; &nbsp; TS0 |= 0x01U;<br />
30. }<br />
31. <br />
32. void R_TAU0_Channel0_Stop(void)<br />
33. {<br />
34. &nbsp; &nbsp; TT0 |= 0x01U;<br />
35. &nbsp; &nbsp; /* Mask channel 0 interrupt */<br />
36. &nbsp; &nbsp; TMMK00 = 1U;&nbsp; &nbsp; /* disable INTTM00 interrupt */<br />
37. &nbsp; &nbsp; TMIF00 = 0U;&nbsp; &nbsp; /* clear INTTM00 interrupt flag */<br />
38. }

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定时器配置2ms来一次中断
服务程序：

1. #pragma interrupt INTTM00 R_TAU0_Channel0_Interrupt&nbsp;&nbsp;//中断服务函数入口<br />
2. <br />
3. __interrupt void R_TAU0_Channel0_Interrupt(void)<br />
4. {<br />
5. &nbsp; &nbsp; /* Start user code. Do not edit comment generated here */<br />
6. <br />
7. &nbsp; &nbsp;if (++inttm00counter == 250U)&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* 250 times interrupt ? */<br />
8. &nbsp; &nbsp; {<br />
9. <br />
10. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;TDR00H = 0x9CU;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* Set new timer interval to TAU0 channel 0 */<br />
11. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;TDR00L = 0x3FU;<br />
12. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; P0.1 = !P0.1;//500ms LED2翻转一次<br />
13. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; inttm00counter = 0U;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;/* Clear TM00 interrupt count */<br />
14. &nbsp; &nbsp; }<br />
15. <br />
16. &nbsp; &nbsp; /* End user code. Do not edit comment generated here */<br />
17. }

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3、UART


额，这个太多了，视频后面把代码打包上来吧
比较乱，仅供参考
要注意UART例程是启用了奇偶校验的，干掉才能正常通信

4、键中断
这个是R7F0C809的一个比较有特色的地方
把按键的外部中断直接固化成了一个模块
果然是为消费电子而生啊
配置好简单，比GPIO复杂不到哪里去

1. KRMK = 1U;&nbsp;&nbsp;/* disable INTKR operation */<br />
2. &nbsp; &nbsp; KRIF = 0U;&nbsp;&nbsp;/* clear INTKR interrupt flag */<br />
3. &nbsp; &nbsp;&nbsp;&nbsp;KRCTL |= 0x80U;<br />
4. &nbsp; &nbsp;&nbsp;&nbsp;KRCTL &amp;= 0xFEU;<br />
5. &nbsp; &nbsp;&nbsp;&nbsp;KRM0 |= 0x10U;<br />
6. <br />
7. &nbsp; &nbsp; /* Set INTKR level 1 priority */<br />
8. &nbsp; &nbsp; KRPR1 = 1U;<br />
9. &nbsp; &nbsp; KRPR0 = 1U;&nbsp;&nbsp;<br />
10. &nbsp; &nbsp; /* Key Interrupt Start */<br />
11. &nbsp; &nbsp; KRF = 0U;<br />
12. &nbsp; &nbsp; KRIF = 0U;&nbsp;&nbsp;/* clear INTKR interrupt flag */<br />
13. &nbsp; &nbsp; KRMK = 0U;&nbsp;&nbsp;/* enable INTKR operation */&nbsp; &nbsp;

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和键中断相关的配置主要是KRCTL、KRM和KRF
不过还得注意通用IO的配置要匹配再就是中断函数

1. #pragma interrupt INTKR KEY_Interrupt //中断函数入口<br />
2. <br />
3. __interrupt void KEY_Interrupt()<br />
4. {<br />
5. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;<br />
6. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;Key_Value = KRF;<br />
7. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;if(Key_Value &amp;&amp; 0x10U){P0.0 = ~P0.0;}<br />
8. &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;KRF = 0U;&nbsp;&nbsp;<br />
9. }<br />

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可以多个按键进行键值判断，很方便

上个操作视频吧，很low

 

LED2由定时器每500ms翻转一次
PC键盘串口点亮或者熄灭LED1
按键K1完成键中断功能，翻转LED1不过实测消抖稍微差劲了些，偶尔会出现多次触发的情况
还要自己消抖的话，那和外部中断有什么区别？
键中断也是个噱头了
代码撸上，比较乱，随便看看吧，嗯，回复可见吧

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2015-8-27 14:48 上传

K1是INTP0吗？

似乎不是啊，顶了天被复用成INTP1呢
不知道是不是哪里看走眼了





 

ljj3166

我在长沙发现了楼主

swustlx86

看看                                 

zenghl

看看            

jiming

不错开始进入轨道了。

240011814

01.#pragma interrupt INTTM00 R_TAU0_Channel0_Interrupt  //中断服务函数入口
我想问下各种的中断函数名在哪里看

ljj3166

240011814 发表于 2015-8-31 15:49
01.#pragma interrupt INTTM00 R_TAU0_Channel0_Interrupt  //中断服务函数入口
我想问下各种的中断函数名 ...

数据手册上

240011814

我还想问下#pragma的用法，

02.PM0 &= 0xFCU;
0xFCU这个在哪有定义

181wh

想看UART

youzizhile

看看

sjzzlxy

刚开始着手弄，正好能参考，谢了！

reayfei

顶一个

haixinghp

……………………