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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*******************************************************************************
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* Copyright (C) 2018 Maxim Integrated Products, Inc., All rights Reserved.
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*
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* This software is protected by copyright laws of the United States and
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* of foreign countries. This material may also be protected by patent laws
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* and technology transfer regulations of the United States and of foreign
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* countries. This software is furnished under a license agreement and/or a
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* nondisclosure agreement and may only be used or reproduced in accordance
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* with the terms of those agreements. Dissemination of this information to
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* any party or parties not specified in the license agreement and/or
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* nondisclosure agreement is expressly prohibited.
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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#include "i2c_ah_sh_api.h"
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#include <stdio.h>
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#include <string.h>
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/* Maxim Integrated Low Power SDK */
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#include "mxc_config.h"
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#include "i2c.h"
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#include "defs.h"
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/***** Definitions *****/
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#define I2C_MASTER MXC_I2C2_BUS0
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int i2c_init()
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{
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int ret = 0;
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//Setup the I2CM
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ret = I2C_Shutdown(I2C_MASTER);
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pr_info("I2C_Shutdown %d \n", ret);
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if(0 == ret){
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ret = I2C_Init(I2C_MASTER, I2C_FAST_MODE , NULL);
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pr_info("I2C_Init %d \n", ret);
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}
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if(0 == ret)
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NVIC_EnableIRQ(I2C2_IRQn);
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return ret;
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}
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int i2c_write(uint8_t addr, const char * p_data, int length, bool restart)
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{
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int ret = 0;
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ret = I2C_MasterWrite(I2C_MASTER, addr, (uint8_t *)p_data, length, (int)restart);
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if(ret == length)
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return 0;
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else
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return -1;
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}
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int i2c_read(uint8_t addr, char * p_data, int length, bool restart)
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{
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int ret = 0;
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ret = I2C_MasterRead(I2C_MASTER, addr, (uint8_t *)p_data, length, (int)restart);
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if(ret == length)
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return 0;
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else
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return -1;
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}
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void i2c_close()
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{
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I2C_Shutdown(I2C_MASTER);
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}
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