FPGA控制DS18B20代码,绝对原创,欢迎拍砖

zhxzhx · 发表于 2010-12-23 07:54:53

还有一点不解的是,代码中的WAIT800MS这个状态不要,也就是不用等待800ms,也能正常工作,请高手不吝赐教!
这个800MS叫转换时间是不太确切的,应该是储能时间,12Bit和9Bit用时就不一样,而且不用寄生供电可以不要这个时间

jielove2003 · 发表于 2010-12-23 08:49:35

mark

yanghengxu · 发表于 2011-4-10 12:52:28

先Mark一下，改天试试

xzf962 · 发表于 2011-4-10 13:23:35

看不懂，先Mark

y595906642 · 发表于 2011-4-10 14:11:46

MARK FPGA控制DS18B20代码

zhuchenlong · 发表于 2011-4-21 20:29:01

回复【楼主位】zkf0100007
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楼主好我最近正在做基于FPGA的温度检测系统的毕业设计想请教你能加我qq聊么？390403879我qq 谢了

fansy38 · 发表于 2011-5-4 12:34:31

我想请问一下..dq的inout 综合不了的问题怎么解决??

xxandll · 发表于 2011-5-13 16:07:20

回复【88楼】zkf0100007
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lz 还在吗？我想问下ds18b20 链接fpga 的inout端口需要设置三态吗，我现在为什么连重置芯片都不成功啊~

xxandll · 发表于 2011-5-16 11:03:18

回复【楼主位】zkf0100007
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还是一样的问题，楼主的程序在板子上测试过了吗~ inout端口需要设置三态吗，这样的操作会不会引起总线冲突啊

zhuchenlong · 发表于 2011-5-19 10:33:26

回复【楼主位】zkf0100007
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感谢楼主的程序请问楼主你这个程序测出的温度是在128*64上的液晶显示器上显示么？

xxandll · 发表于 2011-5-19 16:20:58

回复【112楼】zhuchenlong
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哥们你的程序在板子上调试通过了吗

jeazen · 发表于 2011-5-24 20:55:01

mark

zkf0100007 · 发表于 2011-5-24 21:51:23

回复【112楼】zhuchenlong
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不是，是数码管显示的

sfp208 · 发表于 2011-5-26 00:05:11

mark一下，我也来玩玩

hasea · 发表于 2011-5-26 10:13:29

各位讨论的都很热烈，ourdev难道一下来这么多搞FPGA的高手啊，小弟初学！学习了

xiezheming · 发表于 2011-6-4 14:15:11

mark

fyqy0813 · 发表于 2011-6-6 18:54:19

谢谢分享，marking

mcupro · 发表于 2011-6-9 01:49:16

楼主这个代码不错，是一个有限状态机的典型例子。占用资源不会太多。
有限状态机有时候是一种“偷懒”但是很有效的做法，是并行环境下实现串口控制序列的很好方法。
并且接口也写得很明朗，直接输出温度数值，模块内系统内强耦合，模块间弱耦合的设计规则。
赞！

fansy38 · 发表于 2011-6-16 15:42:24

以下是我编写的BCD译码模块..经过测试可以使用..
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;

ENTITY TMPDISPLAY IS
PORT(
TMP :IN STD_LOGIC_VECTOR(11 DOWNTO 0) ;
HEX3 : OUT STD_LOGIC_VECTOR(7 DOWNTO 0);
HEX2 : OUT STD_LOGIC_VECTOR(7 DOWNTO 0);
HEX1 : OUT STD_LOGIC_VECTOR(7 DOWNTO 0);
HEX0 : OUT STD_LOGIC_VECTOR(7 DOWNTO 0)
);
END ;
ARCHITECTURE BEHV OF TMPDISPLAY IS

SIGNAL TMP_TEMP:STD_LOGIC_VECTOR(11 DOWNTO 0);

BEGIN

PROCESS(TMP)
BEGIN
HEX3<="00000000";
IF (TMP(11)='1') THEN
HEX3<="10111111";
TMP_TEMP<=0-TMP;
ELSE
TMP_TEMP<=TMP;
IF (TMP>1599) THEN
HEX3<="11111001";
ELSE
HEX3<="11111111";
END IF;
END IF;
END PROCESS;

PROCESS(TMP_TEMP)

BEGIN

CASE TMP_TEMP(3 DOWNTO 0) IS
WHEN "0000" =>HEX0<="11000000"; --0--0
WHEN "0001" =>HEX0<="11111001"; --625--1
WHEN "0010" =>HEX0<="11111001"; --1250--1
WHEN "0011" =>HEX0<="10100100"; --1875--2
WHEN "0100" =>HEX0<="10110000"; --2500--3
WHEN "0101" =>HEX0<="10110000"; --3125--3
WHEN "0110" =>HEX0<="10011001"; --3750--4
WHEN "0111" =>HEX0<="10011001"; --4375--4
WHEN "1000" =>HEX0<="10010010"; --5000--5
WHEN "1001" =>HEX0<="10000010"; --5625--6
WHEN "1010" =>HEX0<="10000010"; --6250--6
WHEN "1011" =>HEX0<="11111000"; --6875--7
WHEN "1100" =>HEX0<="10000000"; --7500--8
WHEN "1101" =>HEX0<="10000000"; --8125--8
WHEN "1110" =>HEX0<="10010000"; --8750--9
WHEN "1111" =>HEX0<="10010000"; --9375--9
END CASE;
END PROCESS;

PROCESS(TMP_TEMP)
BEGIN
CASE TMP_TEMP(10 DOWNTO 4) IS
WHEN "0000000" =>HEX1<="01000000"; HEX2<="11000000";--0--00
WHEN "0000001" =>HEX1<="01111001"; HEX2<="11000000";--1--01
WHEN "0000010" =>HEX1<="00100100"; HEX2<="11000000";--2--02
WHEN "0000011" =>HEX1<="00110000"; HEX2<="11000000";--3--03
WHEN "0000100" =>HEX1<="00011001"; HEX2<="11000000";--4--04
WHEN "0000101" =>HEX1<="00010010"; HEX2<="11000000";--5--05
WHEN "0000110" =>HEX1<="00000010"; HEX2<="11000000";--6--06
WHEN "0000111" =>HEX1<="01111000"; HEX2<="11000000";--7--07
WHEN "0001000" =>HEX1<="00000000"; HEX2<="11000000";--8--08
WHEN "0001001" =>HEX1<="00010000"; HEX2<="11000000";--9
WHEN "0001010" =>HEX1<="01000000"; HEX2<="11111001";--10
WHEN "0001011" =>HEX1<="01111001"; HEX2<="11111001";--11
WHEN "0001100" =>HEX1<="00100100"; HEX2<="11111001";--12
WHEN "0001101" =>HEX1<="00110000"; HEX2<="11111001";--13
WHEN "0001110" =>HEX1<="00011001"; HEX2<="11111001";--14
WHEN "0001111" =>HEX1<="00010010"; HEX2<="11111001";--15
WHEN "0010000" =>HEX1<="00000010"; HEX2<="11111001";--16
WHEN "0010001" =>HEX1<="01111000"; HEX2<="11111001";--17
WHEN "0010010" =>HEX1<="00000000"; HEX2<="11111001";--18
WHEN "0010011" =>HEX1<="00010000"; HEX2<="11111001";--19
WHEN "0010100" =>HEX1<="01000000"; HEX2<="10100100";--20
WHEN "0010101" =>HEX1<="01111001"; HEX2<="10100100";--21
WHEN "0010110" =>HEX1<="00100100"; HEX2<="10100100";--22
WHEN "0010111" =>HEX1<="00110000"; HEX2<="10100100";--23
WHEN "0011000" =>HEX1<="00011001"; HEX2<="10100100";--24
WHEN "0011001" =>HEX1<="00010010"; HEX2<="10100100";--25
WHEN "0011010" =>HEX1<="00000010"; HEX2<="10100100";--26
WHEN "0011011" =>HEX1<="01111000"; HEX2<="10100100";--27
WHEN "0011100" =>HEX1<="00000000"; HEX2<="10100100";--28
WHEN "0011101" =>HEX1<="00010000"; HEX2<="10100100";--29
WHEN "0011110" =>HEX1<="01000000"; HEX2<="10110000";--30
WHEN "0011111" =>HEX1<="01111001"; HEX2<="10110000";--31
WHEN "0100000" =>HEX1<="00100100"; HEX2<="10110000";--32
WHEN "0100001" =>HEX1<="00110000"; HEX2<="10110000";--33
WHEN "0100010" =>HEX1<="00011001"; HEX2<="10110000";--34
WHEN "0100011" =>HEX1<="00010010"; HEX2<="10110000";--35
WHEN "0100100" =>HEX1<="00000010"; HEX2<="10110000";--36
WHEN "0100101" =>HEX1<="01111000"; HEX2<="10110000";--37
WHEN "0100110" =>HEX1<="00000000"; HEX2<="10110000";--38
WHEN "0100111" =>HEX1<="00010000"; HEX2<="10110000";--39
WHEN "0101000" =>HEX1<="01000000"; HEX2<="10011001";--40
WHEN "0101001" =>HEX1<="01111001"; HEX2<="10011001";--41
WHEN "0101010" =>HEX1<="00100100"; HEX2<="10011001";--42
WHEN "0101011" =>HEX1<="00110000"; HEX2<="10011001";--43
WHEN "0101100" =>HEX1<="00011001"; HEX2<="10011001";--44
WHEN "0101101" =>HEX1<="00010010"; HEX2<="10011001";--45
WHEN "0101110" =>HEX1<="00000010"; HEX2<="10011001";--46
WHEN "0101111" =>HEX1<="01111000"; HEX2<="10011001";--47
WHEN "0110000" =>HEX1<="00000000"; HEX2<="10011001";--48
WHEN "0110001" =>HEX1<="00010000"; HEX2<="10011001";--49
WHEN "0110010" =>HEX1<="01000000"; HEX2<="10010010";--50
WHEN "0110011" =>HEX1<="01111001"; HEX2<="10010010";--51
WHEN "0110100" =>HEX1<="00100100"; HEX2<="10010010";--52
WHEN "0110101" =>HEX1<="00110000"; HEX2<="10010010";--53
WHEN "0110110" =>HEX1<="00011001"; HEX2<="10010010";--54
WHEN "0110111" =>HEX1<="00010010"; HEX2<="10010010";--55
WHEN "0111000" =>HEX1<="00000010"; HEX2<="10010010";--56
WHEN "0111001" =>HEX1<="01111000"; HEX2<="10010010";--57
WHEN "0111010" =>HEX1<="00000000"; HEX2<="10010010";--58
WHEN "0111011" =>HEX1<="00010000"; HEX2<="10010010";--59
WHEN "0111100" =>HEX1<="01000000"; HEX2<="10000010";--60
WHEN "0111101" =>HEX1<="01111001"; HEX2<="10000010";--61
WHEN "0111110" =>HEX1<="00100100"; HEX2<="10000010";--62
WHEN "0111111" =>HEX1<="00110000"; HEX2<="10000010";--63
WHEN "1000000" =>HEX1<="00011001"; HEX2<="10000010";--64
WHEN "1000001" =>HEX1<="00010010"; HEX2<="10000010";--65
WHEN "1000010" =>HEX1<="00000010"; HEX2<="10000010";--66
WHEN "1000011" =>HEX1<="01111000"; HEX2<="10000010";--67
WHEN "1000100" =>HEX1<="00000000"; HEX2<="10000010";--68
WHEN "1000101" =>HEX1<="00010000"; HEX2<="10000010";--69
WHEN "1000110" =>HEX1<="01000000"; HEX2<="11111000";--70
WHEN "1000111" =>HEX1<="01111001"; HEX2<="11111000";--71
WHEN "1001000" =>HEX1<="00100100"; HEX2<="11111000";--72
WHEN "1001001" =>HEX1<="00110000"; HEX2<="11111000";--73
WHEN "1001010" =>HEX1<="00011001"; HEX2<="11111000";--74
WHEN "1001011" =>HEX1<="00010010"; HEX2<="11111000";--75
WHEN "1001100" =>HEX1<="00000010"; HEX2<="11111000";--76
WHEN "1001101" =>HEX1<="01111000"; HEX2<="11111000";--77
WHEN "1001110" =>HEX1<="00000000"; HEX2<="11111000";--78
WHEN "1001111" =>HEX1<="00010000"; HEX2<="11111000";--79
WHEN "1010000" =>HEX1<="01000000"; HEX2<="10000000";--80
WHEN "1010001" =>HEX1<="01111001"; HEX2<="10000000";--81
WHEN "1010010" =>HEX1<="00100100"; HEX2<="10000000";--82
WHEN "1010011" =>HEX1<="00110000"; HEX2<="10000000";--83
WHEN "1010100" =>HEX1<="00011001"; HEX2<="10000000";--84
WHEN "1010101" =>HEX1<="00010010"; HEX2<="10000000";--85
WHEN "1010110" =>HEX1<="00000010"; HEX2<="10000000";--86
WHEN "1010111" =>HEX1<="01111000"; HEX2<="10000000";--87
WHEN "1011000" =>HEX1<="00000000"; HEX2<="10000000";--88
WHEN "1011001" =>HEX1<="00010000"; HEX2<="10000000";--89
WHEN "1011010" =>HEX1<="01000000"; HEX2<="10010000";--90
WHEN "1011011" =>HEX1<="01111001"; HEX2<="10010000";--91
WHEN "1011100" =>HEX1<="00100100"; HEX2<="10010000";--92
WHEN "1011101" =>HEX1<="00110000"; HEX2<="10010000";--93
WHEN "1011110" =>HEX1<="00011001"; HEX2<="10010000";--94
WHEN "1011111" =>HEX1<="00010010"; HEX2<="10010000";--95
WHEN "1100000" =>HEX1<="00000010"; HEX2<="10010000";--96
WHEN "1100001" =>HEX1<="01111000"; HEX2<="10010000";--97
WHEN "1100010" =>HEX1<="00000000"; HEX2<="10010000";--98
WHEN "1100011" =>HEX1<="00010000"; HEX2<="10010000";--99
WHEN "1100100" =>HEX1<="01000000"; HEX2<="11000000";--100
WHEN "1100101" =>HEX1<="01111001"; HEX2<="11000000";--101
WHEN "1100110" =>HEX1<="00100100"; HEX2<="11000000";--102
WHEN "1100111" =>HEX1<="00110000"; HEX2<="11000000";--103
WHEN "1101000" =>HEX1<="00011001"; HEX2<="11000000";--104
WHEN "1101001" =>HEX1<="00010010"; HEX2<="11000000";--105
WHEN "1101010" =>HEX1<="00000010"; HEX2<="11000000";--106
WHEN "1101011" =>HEX1<="01111000"; HEX2<="11000000";--107
WHEN "1101100" =>HEX1<="00000000"; HEX2<="11000000";--108
WHEN "1101101" =>HEX1<="00010000"; HEX2<="11000000";--109
WHEN "1101110" =>HEX1<="01000000"; HEX2<="11111001";--110
WHEN "1101111" =>HEX1<="01111001"; HEX2<="11111001";--111
WHEN "1110000" =>HEX1<="00100100"; HEX2<="11111001";--112
WHEN "1110001" =>HEX1<="00110000"; HEX2<="11111001";--113
WHEN "1110010" =>HEX1<="00011001"; HEX2<="11111001";--114
WHEN "1110011" =>HEX1<="00010010"; HEX2<="11111001";--115
WHEN "1110100" =>HEX1<="00000010"; HEX2<="11111001";--116
WHEN "1110101" =>HEX1<="01111000"; HEX2<="11111001";--117
WHEN "1110110" =>HEX1<="00000000"; HEX2<="11111001";--118
WHEN "1110111" =>HEX1<="00010000"; HEX2<="11111001";--119
WHEN "1111000" =>HEX1<="01000000"; HEX2<="10100100";--120
WHEN "1111001" =>HEX1<="01111001"; HEX2<="10100100";--121
WHEN "1111010" =>HEX1<="00100100"; HEX2<="10100100";--122
WHEN "1111011" =>HEX1<="00110000"; HEX2<="10100100";--123
WHEN "1111100" =>HEX1<="00011001"; HEX2<="10100100";--124
WHEN "1111101" =>HEX1<="00010010"; HEX2<="10100100";--125
WHEN "1111110" =>HEX1<="00000010"; HEX2<="10100100";--126
WHEN "1111111" =>HEX1<="01111000"; HEX2<="10100100";--127
END CASE;
END PROCESS;

END;

NJ8888 · 发表于 2011-6-16 15:47:19

回复【121楼】fansy38
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http://www.ourdev.cn/bbs/bbs_content.jsp?bbs_sn=4215535&bbs_page_no=1&search_mode=3&search_text=888888888888&bbs_id=9999

我的16位BIN转BCD,你是组合逻辑吧,我是靠时钟打数据

sharpedge · 发表于 2011-6-16 17:31:33

LZ可以试试把多个18B20挂一根总线上进行控制。以前在avr上实现过，不过貌似现在各种芯片的管脚都比较多，很少有人还会这么干吧？呵呵

zkf0100007 · 发表于 2011-6-19 23:32:01

回复【123楼】sharpedge
lz可以试试把多个18b20挂一根总线上进行控制。以前在avr上实现过，不过貌似现在各种芯片的管脚都比较多，很少有人还会这么干吧？呵呵
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这个我也做过，就是多一个ID读取，其他差不多

s409348459 · 发表于 2011-6-20 23:19:15

mark一下！~

tigerer412 · 发表于 2011-7-16 16:13:43

学习了，佩服中，，，