1 /* ----------------------------------------------------------------------------
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2 * SAM Software Package License
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2014, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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33 * Implementation WM8904 driver.
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37 /*----------------------------------------------------------------------------
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39 *----------------------------------------------------------------------------*/
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43 /*----------------------------------------------------------------------------
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45 *----------------------------------------------------------------------------*/
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51 /*----------------------------------------------------------------------------
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52 * Exported functions
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53 *----------------------------------------------------------------------------*/
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55 * \brief Read data from CS2100 Register.
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57 * \param pTwid Pointer to twi driver structure
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58 * \param device Twi slave address.
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59 * \param regAddr Register address to read.
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60 * \return value in the given register.
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62 uint16_t CS2100_Read(Twid *pTwid,
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66 uint16_t bitsDataRegister;
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67 uint8_t Tdata[2]={0,0};
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69 TWID_Read(pTwid, device, regAddr, 1, Tdata, 2, 0);
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70 bitsDataRegister = (Tdata[0] << 8) | Tdata[1];
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71 return bitsDataRegister;
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75 * \brief Write data to WM8904 Register.
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77 * \param pTwid Pointer to twi driver structure
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78 * \param device Twi slave address.
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79 * \param regAddr Register address to read.
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80 * \param data Data to write
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82 void CS2100_Write(Twid *pTwid,
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89 tmpData[0] = (data & 0xff00) >> 8;
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90 tmpData[1] = data & 0xff;
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91 TWID_Write(pTwid, device, regAddr, 1, tmpData, 2, 0);
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94 uint8_t CS2100_Init(Twid *pTwid, uint32_t device, uint32_t PCK)
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98 // Reset (write Reg@0x0 to reset)
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99 CS2100_Write(pTwid, device, 0, 0xFFFF);
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101 for(data=0;data<1000;data++);
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103 while(data!=0x8904)
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104 data=CS2100_Read(pTwid, device, 0);
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