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ZealOS/docs/Doc/Comm.html
TomAwezome 5002ed5880 Fix HTML index file generation. 
Fix HTML generation tab width.
2021-07-04 18:11:43 -04:00

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
<meta name="generator" content="ZealOS V0.05">
<style type="text/css">
body {background-color:#000000;}
.cF0{color:#ffffff;background-color:#000000;}
.cF1{color:#3465a4;background-color:#000000;}
.cF2{color:#4e9a06;background-color:#000000;}
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.cF9{color:#729fcf;background-color:#000000;}
.cFA{color:#82bc49;background-color:#000000;}
.cFB{color:#34e2e2;background-color:#000000;}
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</style>
</head>
<body>
<pre style="font-family:courier;font-size:10pt">
<a name="l1"></a><span class=cF2>/* RS232 serial ports no longer exist.</span><span class=cF0>
<a name="l2"></a></span><span class=cF2>Be sure to System Include this by placing</span><span class=cF0>
<a name="l3"></a></span><span class=cF2>it in your start-up scripts.</span><span class=cF0>
<a name="l4"></a></span><span class=cF2>*/</span><span class=cF0>
<a name="l5"></a>
<a name="l6"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Comm&quot;</span><span class=cF0>
<a name="l7"></a>
<a name="l8"></a>#</span><span class=cF1>define</span><span class=cF0> UART_THR </span><span class=cFE>0</span><span class=cF0>
<a name="l9"></a>#</span><span class=cF1>define</span><span class=cF0> UART_RDR </span><span class=cFE>0</span><span class=cF0>
<a name="l10"></a>#</span><span class=cF1>define</span><span class=cF0> UART_BRDL </span><span class=cFE>0</span><span class=cF0>
<a name="l11"></a>#</span><span class=cF1>define</span><span class=cF0> UART_IER </span><span class=cFE>1</span><span class=cF0>
<a name="l12"></a>#</span><span class=cF1>define</span><span class=cF0> UART_BRDH </span><span class=cFE>1</span><span class=cF0>
<a name="l13"></a>#</span><span class=cF1>define</span><span class=cF0> UART_IIR </span><span class=cFE>2</span><span class=cF0>
<a name="l14"></a>#</span><span class=cF1>define</span><span class=cF0> UART_LCR </span><span class=cFE>3</span><span class=cF0>
<a name="l15"></a>#</span><span class=cF1>define</span><span class=cF0> UART_MCR </span><span class=cFE>4</span><span class=cF0>
<a name="l16"></a>#</span><span class=cF1>define</span><span class=cF0> UART_LSR </span><span class=cFE>5</span><span class=cF0>
<a name="l17"></a>#</span><span class=cF1>define</span><span class=cF0> UART_MSR </span><span class=cFE>6</span><span class=cF0>
<a name="l18"></a>
<a name="l19"></a>#</span><span class=cF1>define</span><span class=cF0> COMf_ENABLED </span><span class=cFE>0</span><span class=cF0>
<a name="l20"></a></span><span class=cF1>class</span><span class=cF0> CComm
<a name="l21"></a>{
<a name="l22"></a> </span><span class=cF9>I64</span><span class=cF0> base,
<a name="l23"></a> flags;
<a name="l24"></a> </span><span class=cF9>CFifoU8</span><span class=cF0> *RX_fifo;
<a name="l25"></a> </span><span class=cF9>CFifoU8</span><span class=cF0> *TX_fifo;
<a name="l26"></a>
<a name="l27"></a>} comm_ports[</span><span class=cFE>5</span><span class=cF0>];
<a name="l28"></a>
<a name="l29"></a></span><span class=cF1>U0</span><span class=cF0> CommHandler(</span><span class=cF9>I64</span><span class=cF0> port)
<a name="l30"></a>{
<a name="l31"></a> CComm *c = &amp;comm_ports[port];
<a name="l32"></a> </span><span class=cF9>I64</span><span class=cF0> b = </span><span class=cFE>0</span><span class=cF0>, stat;
<a name="l33"></a>
<a name="l34"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>&amp;c-&gt;flags, COMf_ENABLED</span><span class=cF7>)</span><span class=cF0>)
<a name="l35"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l36"></a> stat = </span><span class=cF5>InU8</span><span class=cF0>(c-&gt;base+UART_IIR);
<a name="l37"></a> </span><span class=cF1>if</span><span class=cF0> (stat &amp; </span><span class=cFE>4</span><span class=cF0>) </span><span class=cF2>//RX</span><span class=cF0>
<a name="l38"></a> </span><span class=cF5>FifoU8Insert</span><span class=cF0>(c-&gt;RX_fifo, </span><span class=cF5>InU8</span><span class=cF7>(</span><span class=cF0>c-&gt;base + UART_RDR</span><span class=cF7>)</span><span class=cF0>);
<a name="l39"></a> </span><span class=cF1>if</span><span class=cF0> (stat &amp; </span><span class=cFE>2</span><span class=cF0>)
<a name="l40"></a> { </span><span class=cF2>//TX</span><span class=cF0>
<a name="l41"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>FifoU8Remove</span><span class=cF7>(</span><span class=cF0>c-&gt;TX_fifo, &amp;b</span><span class=cF7>)</span><span class=cF0>)
<a name="l42"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_THR, b);
<a name="l43"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l44"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_IER, </span><span class=cFE>1</span><span class=cF0>); </span><span class=cF2>//RX but no THR empty</span><span class=cF0>
<a name="l45"></a> }
<a name="l46"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l47"></a>}
<a name="l48"></a>
<a name="l49"></a></span><span class=cF1>interrupt</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> IRQComm3()
<a name="l50"></a>{
<a name="l51"></a> CommHandler(</span><span class=cFE>2</span><span class=cF0>);
<a name="l52"></a> CommHandler(</span><span class=cFE>4</span><span class=cF0>);
<a name="l53"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>PIC_1</span><span class=cF0>, </span><span class=cF3>PIC_EOI</span><span class=cF0>);
<a name="l54"></a>}
<a name="l55"></a>
<a name="l56"></a></span><span class=cF1>interrupt</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> IRQComm4()
<a name="l57"></a>{
<a name="l58"></a> CommHandler(</span><span class=cFE>1</span><span class=cF0>);
<a name="l59"></a> CommHandler(</span><span class=cFE>3</span><span class=cF0>);
<a name="l60"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>PIC_1</span><span class=cF0>, </span><span class=cF3>PIC_EOI</span><span class=cF0>);
<a name="l61"></a>}
<a name="l62"></a>
<a name="l63"></a></span><span class=cF1>U0</span><span class=cF0> CommInit()
<a name="l64"></a>{
<a name="l65"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;comm_ports, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>comm_ports</span><span class=cF7>)</span><span class=cF0>);
<a name="l66"></a> comm_ports[</span><span class=cFE>1</span><span class=cF0>].base = </span><span class=cFE>0x3F8</span><span class=cF0>;
<a name="l67"></a> comm_ports[</span><span class=cFE>2</span><span class=cF0>].base = </span><span class=cFE>0x2F8</span><span class=cF0>;
<a name="l68"></a> comm_ports[</span><span class=cFE>3</span><span class=cF0>].base = </span><span class=cFE>0x3E8</span><span class=cF0>;
<a name="l69"></a> comm_ports[</span><span class=cFE>4</span><span class=cF0>].base = </span><span class=cFE>0x2E8</span><span class=cF0>;
<a name="l70"></a> </span><span class=cF5>IntEntrySet</span><span class=cF0>(</span><span class=cFE>0x23</span><span class=cF0>, &amp;IRQComm3);
<a name="l71"></a> </span><span class=cF5>IntEntrySet</span><span class=cF0>(</span><span class=cFE>0x24</span><span class=cF0>, &amp;IRQComm4);
<a name="l72"></a>}
<a name="l73"></a>CommInit;
<a name="l74"></a>
<a name="l75"></a></span><span class=cF1>public</span><span class=cF0> CComm *CommInit8n1(</span><span class=cF9>I64</span><span class=cF0> port, </span><span class=cF9>I64</span><span class=cF0> baud)
<a name="l76"></a>{
<a name="l77"></a> CComm *c = &amp;comm_ports[port];
<a name="l78"></a>
<a name="l79"></a> </span><span class=cF1>PUSHFD</span><span class=cF0>
<a name="l80"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l81"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>LBts</span><span class=cF7>(</span><span class=cF0>&amp;c-&gt;flags, COMf_ENABLED</span><span class=cF7>)</span><span class=cF0>)
<a name="l82"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l83"></a> </span><span class=cF5>FifoU8Del</span><span class=cF0>(c-&gt;RX_fifo);
<a name="l84"></a> </span><span class=cF5>FifoU8Del</span><span class=cF0>(c-&gt;TX_fifo);
<a name="l85"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l86"></a> c-&gt;RX_fifo = </span><span class=cF5>FifoU8New</span><span class=cF0>(</span><span class=cFE>256</span><span class=cF0>);
<a name="l87"></a> c-&gt;TX_fifo = </span><span class=cF5>FifoU8New</span><span class=cF0>(</span><span class=cFE>256</span><span class=cF0>);
<a name="l88"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_LCR, </span><span class=cFE>0</span><span class=cF0>); </span><span class=cF2>//Set for IER</span><span class=cF0>
<a name="l89"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_IER, </span><span class=cFE>0</span><span class=cF0>); </span><span class=cF2>//Disable all IRQ</span><span class=cF0>
<a name="l90"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_LCR, </span><span class=cFE>0x80</span><span class=cF0>); </span><span class=cF2>//Enable baud rate control</span><span class=cF0>
<a name="l91"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_BRDL, </span><span class=cF7>(</span><span class=cFE>0x180</span><span class=cF0> / (baud / </span><span class=cFE>300</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cFE>0xFF</span><span class=cF0>); </span><span class=cF2>//LSB</span><span class=cF0>
<a name="l92"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_BRDH, </span><span class=cF7>(</span><span class=cFE>0x180</span><span class=cF0> / (baud / </span><span class=cFE>300</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0> / </span><span class=cFE>256</span><span class=cF0>); </span><span class=cF2>//MSB</span><span class=cF0>
<a name="l93"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_LCR, </span><span class=cFE>3</span><span class=cF0>); </span><span class=cF2>//8-none-1</span><span class=cF0>
<a name="l94"></a>
<a name="l95"></a> </span><span class=cF5>InU8</span><span class=cF0>(c-&gt;base + UART_RDR); </span><span class=cF2>//read garbage</span><span class=cF0>
<a name="l96"></a> </span><span class=cF5>InU8</span><span class=cF0>(c-&gt;base + UART_LSR);
<a name="l97"></a>
<a name="l98"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_MCR, </span><span class=cFE>4</span><span class=cF0>);
<a name="l99"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_IER, </span><span class=cFE>0</span><span class=cF0>); </span><span class=cF2>//Disable all IRQ</span><span class=cF0>
<a name="l100"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_MCR, </span><span class=cFE>0xA</span><span class=cF0>); </span><span class=cF2>//out2 and rts</span><span class=cF0>
<a name="l101"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>PIC_1_DATA</span><span class=cF0>, </span><span class=cF5>InU8</span><span class=cF7>(</span><span class=cF3>PIC_1_DATA</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cF7>(</span><span class=cFE>0xFF</span><span class=cF0> - </span><span class=cFE>0x18</span><span class=cF7>)</span><span class=cF0>); </span><span class=cF2>//Enable 8259 IRQ 3 &amp; 4</span><span class=cF0>
<a name="l102"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_IER, </span><span class=cFE>1</span><span class=cF0>); </span><span class=cF2>//RX but no THR empty</span><span class=cF0>
<a name="l103"></a> </span><span class=cF1>POPFD</span><span class=cF0>
<a name="l104"></a>
<a name="l105"></a> </span><span class=cF1>return</span><span class=cF0> c;
<a name="l106"></a>}
<a name="l107"></a>
<a name="l108"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> CommPutChar(</span><span class=cF9>I64</span><span class=cF0> port, </span><span class=cF1>U8</span><span class=cF0> b)
<a name="l109"></a>{
<a name="l110"></a> CComm *c = &amp;comm_ports[port];
<a name="l111"></a>
<a name="l112"></a> </span><span class=cF1>PUSHFD</span><span class=cF0>
<a name="l113"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l114"></a> </span><span class=cF5>FifoU8Insert</span><span class=cF0>(c-&gt;TX_fifo, b);
<a name="l115"></a> </span><span class=cF5>OutU8</span><span class=cF0>(c-&gt;base + UART_IER, </span><span class=cFE>3</span><span class=cF0>); </span><span class=cF2>//RX and THR empty</span><span class=cF0>
<a name="l116"></a> </span><span class=cF1>POPFD</span><span class=cF0>
<a name="l117"></a> </span><span class=cF5>Sleep</span><span class=cF0>(</span><span class=cFE>10</span><span class=cF0>); </span><span class=cF2>//!!! Remove this line!!!</span><span class=cF0> </span><span class=cF2>Linux echo_socket is too slow.</span><span class=cF0>
<a name="l118"></a>}
<a name="l119"></a>
<a name="l120"></a></span><span class=cF1>U0</span><span class=cF0> CommPutS(</span><span class=cF9>I64</span><span class=cF0> port, </span><span class=cF1>U8</span><span class=cF0> *st)
<a name="l121"></a>{
<a name="l122"></a> </span><span class=cF9>I64</span><span class=cF0> b;
<a name="l123"></a>
<a name="l124"></a> </span><span class=cF1>while</span><span class=cF0> (b = *st++)
<a name="l125"></a> CommPutChar(port, b);
<a name="l126"></a>}
<a name="l127"></a>
<a name="l128"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> CommPutBlk(</span><span class=cF9>I64</span><span class=cF0> port, </span><span class=cF1>U8</span><span class=cF0> *buf, </span><span class=cF9>I64</span><span class=cF0> count)
<a name="l129"></a>{
<a name="l130"></a> </span><span class=cF1>while</span><span class=cF0> (count--)
<a name="l131"></a> CommPutChar(port, *buf++);
<a name="l132"></a>}
<a name="l133"></a>
<a name="l134"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> CommPrint(</span><span class=cF9>I64</span><span class=cF0> port, </span><span class=cF1>U8</span><span class=cF0> *format, ...)
<a name="l135"></a>{
<a name="l136"></a> </span><span class=cF1>U8</span><span class=cF0> *buf = </span><span class=cF5>StrPrintJoin</span><span class=cF0>(</span><span class=cF3>NULL</span><span class=cF0>, format, argc, argv);
<a name="l137"></a>
<a name="l138"></a> CommPutS(port, buf);
<a name="l139"></a> </span><span class=cF5>Free</span><span class=cF0>(buf);
<a name="l140"></a>}
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