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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Sample MSP430-4619LCD Project: mmc.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.1 --><div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul></div><h1>mmc.c</h1><a href="mmc_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span><a name="l00002"></a>00002 <span class="comment"> * File: mmc.c</span><a name="l00003"></a>00003 <span class="comment"> * Purpose: SD/MMC handler functions</span><a name="l00004"></a>00004 <span class="comment"> * Author: ChaN, Peter Ivanov</span><a name="l00005"></a>00005 <span class="comment"> * Modified by:</span><a name="l00006"></a>00006 <span class="comment"> * Created: 2007-05-19 11:29:32</span><a name="l00007"></a>00007 <span class="comment"> * Last modify: 2007-10-03 21:11:58 ivanovp {Time-stamp}</span><a name="l00008"></a>00008 <span class="comment"> * Copyright: (C) ChaN, Peter Ivanov, 2007</span><a name="l00009"></a>00009 <span class="comment"> * Licence: GPL</span><a name="l00010"></a>00010 <span class="comment"> */</span><a name="l00016"></a>00016 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00017"></a>00017 <span class="comment">/* MMC/SD (in SPI mode) control module (C)ChaN, 2007 */</span><a name="l00018"></a>00018 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00019"></a>00019 <span class="comment">/* Only rcvr_spi(), xmit_spi(), disk_timerproc() and some macros are */</span><a name="l00020"></a>00020 <span class="comment">/* platform dependent. */</span><a name="l00021"></a>00021 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00022"></a>00022 <a name="l00023"></a>00023 <span class="preprocessor">#include <msp430xG461x.h></span><a name="l00024"></a>00024 <span class="preprocessor">#include <string.h></span><a name="l00025"></a>00025 <span class="preprocessor">#include "diskio.h"</span><a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="mmc_8h.html">mmc.h</a>"</span><a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="lcd_8h.html">lcd.h</a>"</span> <span class="comment">// debug!</span><a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="comment">/* MMC/SD command (in SPI) */</span><a name="l00030"></a><a class="code" href="mmc_8c.html#938c1466755f12fb04ac0d1b775584d1">00030</a> <span class="preprocessor">#define CMD0 (0x40+0) </span><span class="comment">/* GO_IDLE_STATE */</span><a name="l00031"></a><a class="code" href="mmc_8c.html#ca9979f299fa78c1128d778084478673">00031</a> <span class="preprocessor">#define CMD1 (0x40+1) </span><span class="comment">/* SEND_OP_COND */</span><a name="l00032"></a><a class="code" href="mmc_8c.html#c75b3e0ad1fb013ea946fb49bbe65668">00032</a> <span class="preprocessor">#define CMD8 (0x40+8) </span><span class="comment">/* SEND_IF_COND */</span><a name="l00033"></a><a class="code" href="mmc_8c.html#1fac6a251d7e7dc204d21639bf521459">00033</a> <span class="preprocessor">#define CMD9 (0x40+9) </span><span class="comment">/* SEND_CSD */</span><a name="l00034"></a><a class="code" href="mmc_8c.html#e7b800ed8e7bd52e6f570a5ce72b8104">00034</a> <span class="preprocessor">#define CMD10 (0x40+10) </span><span class="comment">/* SEND_CID */</span><a name="l00035"></a><a class="code" href="mmc_8c.html#8d6283c9b060afbaa0e6d1ff7e5ea7b8">00035</a> <span class="preprocessor">#define CMD12 (0x40+12) </span><span class="comment">/* STOP_TRANSMISSION */</span><a name="l00036"></a><a class="code" href="mmc_8c.html#aeab261b94f2031ba41a1d4d857c3541">00036</a> <span class="preprocessor">#define CMD16 (0x40+16) </span><span class="comment">/* SET_BLOCKLEN */</span><a name="l00037"></a><a class="code" href="mmc_8c.html#6bbfe7dc16a19b7f40efcf554b5666ad">00037</a> <span class="preprocessor">#define CMD17 (0x40+17) </span><span class="comment">/* READ_SINGLE_BLOCK */</span><a name="l00038"></a><a class="code" href="mmc_8c.html#3d32c27a6be061b865ba539127278f14">00038</a> <span class="preprocessor">#define CMD18 (0x40+18) </span><span class="comment">/* READ_MULTIPLE_BLOCK */</span><a name="l00039"></a><a class="code" href="mmc_8c.html#14506e981f38b6177bc36f72c2ca18b1">00039</a> <span class="preprocessor">#define CMD23 (0x40+23) </span><span class="comment">/* SET_BLOCK_COUNT */</span><a name="l00040"></a><a class="code" href="mmc_8c.html#252300302c6f7960df547a7f5c25be85">00040</a> <span class="preprocessor">#define CMD24 (0x40+24) </span><span class="comment">/* WRITE_BLOCK */</span><a name="l00041"></a><a class="code" href="mmc_8c.html#ee2c673fba987178f4642531fdeefe9e">00041</a> <span class="preprocessor">#define CMD25 (0x40+25) </span><span class="comment">/* WRITE_MULTIPLE_BLOCK */</span><a name="l00042"></a><a class="code" href="mmc_8c.html#3ca1450d0ac55d2705aab03537bf2865">00042</a> <span class="preprocessor">#define CMD41 (0x40+41) </span><span class="comment">/* SEND_OP_COND (ACMD) */</span><a name="l00043"></a><a class="code" href="mmc_8c.html#78289a7a85ffcfddd626694105dc0780">00043</a> <span class="preprocessor">#define CMD55 (0x40+55) </span><span class="comment">/* APP_CMD */</span><a name="l00044"></a><a class="code" href="mmc_8c.html#a7a26b2cf17e1ff5967820a1fa41a7aa">00044</a> <span class="preprocessor">#define CMD58 (0x40+58) </span><span class="comment">/* READ_OCR */</span><a name="l00045"></a>00045 <a name="l00046"></a>00046 <a name="l00047"></a>00047 <span class="comment">/* Control signals (Platform dependent) */</span><a name="l00048"></a><a class="code" href="mmc_8c.html#56e8d2ffde94d0c5fdf14b772a32a77f">00048</a> <span class="preprocessor">#define SELECT() P3OUT &= ~BIT0 // Card Select</span><a name="l00049"></a><a class="code" href="mmc_8c.html#1cbd972fc333e07d29999e284020c362">00049</a> <span class="preprocessor"></span><span class="preprocessor">#define DESELECT() P3OUT |= BIT0 // Card Deselect</span><a name="l00050"></a>00050 <span class="preprocessor"></span><a name="l00051"></a>00051 <span class="comment">//#define SOCKPORT IO.PDR5.BYTE /* Socket control port */</span><a name="l00052"></a><a class="code" href="mmc_8c.html#572cdb8c6d4db7fa9fcf995c55f9e60b">00052</a> <span class="preprocessor">#define SOCKWP BIT5 </span><span class="comment">/* Write protect switch (PB5) */</span><a name="l00053"></a><a class="code" href="mmc_8c.html#293d517245047871e5ba4eaebae946a7">00053</a> <span class="preprocessor">#define SOCKINS BIT1 </span><span class="comment">/* Card detect switch (PB4) */</span><a name="l00054"></a>00054 <span class="comment">//#define CARDPWR 0x80 /* Card power (PE7) */</span><a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="comment">/*--------------------------------------------------------------------------</span><a name="l00057"></a>00057 <span class="comment"></span><a name="l00058"></a>00058 <span class="comment"> Module Private Functions</span><a name="l00059"></a>00059 <span class="comment"></span><a name="l00060"></a>00060 <span class="comment">---------------------------------------------------------------------------*/</span><a name="l00061"></a>00061 <a name="l00062"></a>00062 <span class="keyword">static</span> <span class="keyword">volatile</span><a name="l00063"></a>00063 DSTATUS Stat = STA_NOINIT; <span class="comment">/* Disk status */</span><a name="l00064"></a>00064 <a name="l00065"></a>00065 <span class="keyword">static</span> <span class="keyword">volatile</span><a name="l00066"></a>00066 BYTE Timer1, Timer2; <span class="comment">/* 100Hz decrement timer */</span><a name="l00067"></a>00067 <a name="l00068"></a>00068 <span class="keyword">static</span><a name="l00069"></a>00069 BYTE CardType; <span class="comment">/* b0:MMC, b1:SDC, b2:Block addressing */</span><a name="l00070"></a>00070 <a name="l00071"></a>00071 <span class="comment">// Set up UASRT11 in SPI mode</span><a name="l00072"></a><a class="code" href="mmc_8h.html#4f29b18133b2bf5eaa2f04587d3b1050">00072</a> <span class="keywordtype">void</span> <a class="code" href="mmc_8c.html#4f29b18133b2bf5eaa2f04587d3b1050">MMC_init</a> (<span class="keywordtype">void</span>)<a name="l00073"></a>00073 {<a name="l00074"></a>00074 <span class="comment">// Initialize SPI</span><a name="l00075"></a>00075 <span class="comment">// master mode, data valid on rising edge, msb first</span><a name="l00076"></a>00076 UCB0CTL0 = UCCKPH + UCMST + UCMSB + UCSYNC;<a name="l00077"></a>00077 <a name="l00078"></a>00078 <span class="comment">// clock -> SMCLK</span><a name="l00079"></a>00079 UCB0CTL1 = UCSSEL1;<a name="l00080"></a>00080 <a name="l00081"></a>00081 <span class="comment">// // 0x02: SMCLK/2 (4 MHz)</span><a name="l00082"></a>00082 <span class="comment">// UCB0BR0 = 0x02; </span><a name="l00083"></a>00083 <span class="comment">// UCB0BR0 = 0x00; </span><a name="l00084"></a>00084 <a name="l00085"></a>00085 <span class="comment">// 0x02: SMCLK/2 (1 MHz)</span><a name="l00086"></a>00086 UCB0BR0 = 0x02;<a name="l00087"></a>00087 UCB0BR1 = 0x00;<a name="l00088"></a>00088 <a name="l00089"></a>00089 <span class="comment">// second functionality of pin</span><a name="l00090"></a>00090 P3SEL |= BIT1 | BIT2 | BIT3; <span class="comment">// P3.1-3 SPI option select</span><a name="l00091"></a>00091 P3DIR |= BIT0; <span class="comment">// P3.0 output direction</span><a name="l00092"></a>00092 <a name="l00093"></a>00093 <span class="comment">// end of SPI initialization</span><a name="l00094"></a>00094 <a name="l00095"></a>00095 <span class="comment">// CP (Card present) - P1.0</span><a name="l00096"></a>00096 P1SEL &= ~BIT0; <span class="comment">// gpio</span><a name="l00097"></a>00097 P1DIR &= ~BIT0; <span class="comment">// input</span><a name="l00098"></a>00098 <a name="l00099"></a>00099 <span class="comment">// WP (Write protection) - P7.5</span><a name="l00100"></a>00100 P7SEL &= ~BIT5; <span class="comment">// gpio</span><a name="l00101"></a>00101 P7DIR &= ~BIT5; <span class="comment">// input</span><a name="l00102"></a>00102 }<a name="l00103"></a>00103 <a name="l00104"></a><a class="code" href="mmc_8h.html#f0d219bf523e1f70163e044c4cbc20af">00104</a> <span class="keyword">inline</span> <span class="keywordtype">char</span> <a class="code" href="mmc_8c.html#f0d219bf523e1f70163e044c4cbc20af">MMC_cardPresent</a> ()<a name="l00105"></a>00105 {<a name="l00106"></a>00106 <span class="keywordflow">return</span> !(P1IN & BIT0);<a name="l00107"></a>00107 }<a name="l00108"></a>00108 <a name="l00109"></a><a class="code" href="mmc_8h.html#fab21f6428fd2447dee44d73a5b7042e">00109</a> <span class="keyword">inline</span> <span class="keywordtype">char</span> <a class="code" href="mmc_8c.html#fab21f6428fd2447dee44d73a5b7042e">MMC_cardWriteProtected</a> ()<a name="l00110"></a>00110 {<a name="l00111"></a>00111 <span class="keywordflow">return</span> (P7IN & BIT5);<a name="l00112"></a>00112 }<a name="l00113"></a>00113 <a name="l00114"></a>00114 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00115"></a>00115 <span class="comment">/* Transmit a byte to MMC via SPI (Platform dependent) */</span><a name="l00116"></a>00116 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00117"></a>00117 <a name="l00118"></a>00118 <span class="keyword">static</span><a name="l00119"></a>00119 <span class="keywordtype">void</span> xmit_spi (BYTE data)<a name="l00120"></a>00120 {<a name="l00121"></a>00121 uint8_t dummy;<a name="l00122"></a>00122 <span class="keywordflow">while</span> ((IFG2 & UCB0TXIFG) == 0); <span class="comment">// wait while not ready / for RX</span><a name="l00123"></a>00123 UCB0TXBUF = data; <span class="comment">// write</span><a name="l00124"></a>00124 <span class="keywordflow">while</span> ((IFG2 & UCB0RXIFG) == 0); <span class="comment">// wait for RX buffer (full)</span><a name="l00125"></a>00125 dummy = UCB0RXBUF;<a name="l00126"></a>00126 <span class="comment">//return (UCB0RXBUF);</span><a name="l00127"></a>00127 }<a name="l00128"></a>00128 <a name="l00129"></a>00129 <a name="l00130"></a>00130 <a name="l00131"></a>00131 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00132"></a>00132 <span class="comment">/* Receive a byte from MMC via SPI (Platform dependent) */</span><a name="l00133"></a>00133 <span class="comment">/*-----------------------------------------------------------------------*/</span><a name="l00134"></a>00134 <a name="l00135"></a>00135 <span class="keyword">static</span><a name="l00136"></a>00136 BYTE rcvr_spi (<span class="keywordtype">void</span>)<a name="l00137"></a>00137 {<a name="l00138"></a>00138 <span class="keywordflow">while</span> ((IFG2 & UCB0TXIFG) == 0); <span class="comment">// wait while not ready / for RX</span><a name="l00139"></a>00139 UCB0TXBUF = 0xFF; <span class="comment">// write a dummy byte</span><a name="l00140"></a>00140 <span class="keywordflow">while</span> ((IFG2 & UCB0RXIFG) == 0); <span class="comment">// wait for RX buffer (full)</span><a name="l00141"></a>00141 <span class="keywordflow">return</span> (UCB0RXBUF);<a name="l00142"></a>00142 }<a name="l00143"></a>00143 <a name="l00144"></a>00144 <a name="l00145"></a>00145 <a name="l00146"></a>00146 <span class="comment">/*-----------------------------------------------------------------------*/</span>⌨️ 快捷键说明
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