327 lines
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327 lines
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<div class="title">base_eeprom.c</div> </div>
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</div><!--header-->
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*****************************************************************************</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright(C) 2011, Embedded Artists AB</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> ******************************************************************************</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Software that is described herein is for illustrative purposes only</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * which provides customers with programming information regarding the</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * products. This software is supplied "AS IS" without any warranties.</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Embedded Artists AB assumes no responsibility or liability for the</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * use of the software, conveys no license or title under any patent,</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * copyright, or mask work right to the product. Embedded Artists AB</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * reserves the right to make changes in the software without</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * notification. Embedded Artists AB also make no representation or</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * warranty that such application will be suitable for the specified</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * use without further testing or modification.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * NOTE: I2C must have been initialized before calling any functions in this</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * file.</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * Includes</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "../../board.h"</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#if BOARD == BOARD_EA4357</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <string.h></span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <stdio.h></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "lpc_types.h"</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "lpc43xx_i2c.h"</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "base_eeprom.h"</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * Defines and typedefs</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#define I2C_PORT (LPC_I2C0)</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#ifndef MIN</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"></span><span class="preprocessor">#define MIN(x, y) ((x) < (y) ? (x) : (y))</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#define EEPROM_I2C_ADDR (0x57)</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#define EEPROM_PAGE_SIZE 32</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * External global variables</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> * Local variables</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * Local Functions</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">static</span> <span class="keywordtype">void</span> eepromDelay(<span class="keywordtype">void</span>)</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> {</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">volatile</span> <span class="keywordtype">int</span> i = 0;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">for</span> (i = 0; i <0x20000; i++);</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">static</span> Status I2CWrite(uint32_t addr, uint8_t* buf, uint32_t len) </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> {</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  I2C_M_SETUP_Type i2cData;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  i2cData.sl_addr7bit = addr;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  i2cData.tx_data = buf;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  i2cData.tx_length = len;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  i2cData.rx_data = NULL;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  i2cData.rx_length = 0;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  i2cData.retransmissions_max = 3;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> I2C_MasterTransferData(I2C_PORT, &i2cData, I2C_TRANSFER_POLLING);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">static</span> Status I2CRead(uint32_t addr, uint8_t* buf, uint32_t len) </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> {</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  I2C_M_SETUP_Type i2cData;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  i2cData.sl_addr7bit = addr;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  i2cData.tx_data = NULL;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  i2cData.tx_length = 0;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  i2cData.rx_data = buf;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  i2cData.rx_length = len;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  i2cData.retransmissions_max = 3;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> I2C_MasterTransferData(I2C_PORT, &i2cData, I2C_TRANSFER_POLLING);</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * Public Functions</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * Description:</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * Initialize the EEPROM Driver</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keywordtype">void</span> base_eeprom_init (<span class="keywordtype">void</span>)</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  I2C_Cmd(I2C_PORT, ENABLE);</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * Description:</span></div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * Read from the EEPROM</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * Params:</span></div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * [in] buf - read buffer</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * [in] offset - offset to start to read from</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * [in] len - number of bytes to read</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * Returns:</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * number of read bytes or -1 in case of an error</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> int16_t base_eeprom_read(uint8_t* buf, uint16_t offset, uint16_t len)</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> {</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  uint8_t addr = 0;</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">int</span> i = 0;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  uint8_t off[2];</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> (len > BASE_EEPROM_TOTAL_SIZE || offset+len > BASE_EEPROM_TOTAL_SIZE) {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  addr = EEPROM_I2C_ADDR;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  off[0] = ((offset >> 8) & 0xff);</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  off[1] = (offset & 0xff);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  I2CWrite((addr << 1), off, 2);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">for</span> ( i = 0; i < 0x2000; i++);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  I2CRead((addr << 1), buf, len);</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> len;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">/******************************************************************************</span></div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> * Description:</span></div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * Write to the EEPROM</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> * Params:</span></div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> * [in] buf - data to write</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * [in] offset - offset to start to write to</span></div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> * [in] len - number of bytes to write</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> * Returns:</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> * number of written bytes or -1 in case of an error</span></div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> *****************************************************************************/</span></div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> int16_t base_eeprom_write(uint8_t* buf, uint16_t offset, uint16_t len)</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> {</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  uint8_t addr = 0;</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  int16_t written = 0;</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  uint16_t wLen = 0;</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  uint16_t off = offset;</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  uint8_t tmp[EEPROM_PAGE_SIZE+2];</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">if</span> (len > BASE_EEPROM_TOTAL_SIZE || offset+len > BASE_EEPROM_TOTAL_SIZE) {</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  addr = EEPROM_I2C_ADDR;</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  wLen = EEPROM_PAGE_SIZE - (off % EEPROM_PAGE_SIZE);</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  wLen = MIN(wLen, len);</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">while</span> (len) {</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  tmp[0] = ((off >> 8) & 0xff);</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  tmp[1] = (off & 0xff);</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  memcpy(&tmp[2], (<span class="keywordtype">void</span>*)&buf[written], wLen);</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  I2CWrite((addr << 1), tmp, wLen+2);</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">/* delay to wait for a write cycle */</span></div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  eepromDelay();</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  len -= wLen;</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  written += wLen;</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  off += wLen;</div>
|
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  wLen = MIN(EEPROM_PAGE_SIZE, len);</div>
|
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
|
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> written;</div>
|
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</div>
|
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor">#endif</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<li class="footer">Generated on Thu Apr 17 2014 13:05:22 for tinyusb by
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