ad4696_support.c

00001 /*************************************************************************//**
00002  *   @file   ad4696_support.c
00003  *   @brief  AD469x device No-OS driver supports
00004 ******************************************************************************
00005 * Copyright (c) 2021 Analog Devices, Inc.
00006 *
00007 * All rights reserved.
00008 *
00009 * This software is proprietary to Analog Devices, Inc. and its licensors.
00010 * By using this software you agree to the terms of the associated
00011 * Analog Devices Software License Agreement.
00012 *****************************************************************************/
00013 
00014 /******************************************************************************/
00015 /***************************** Include Files **********************************/
00016 /******************************************************************************/
00017 
00018 #include <stdint.h>
00019 
00020 #include "app_config.h"
00021 #include "ad4696_support.h"
00022 #include "error.h"
00023 
00024 /******************************************************************************/
00025 /********************** Macros and Constants Definition ***********************/
00026 /******************************************************************************/
00027 
00028 /******************************************************************************/
00029 /********************** Variables and User Defined Data Types *****************/
00030 /******************************************************************************/
00031 
00032 /******************************************************************************/
00033 /************************ Functions Definitions *******************************/
00034 /******************************************************************************/
00035 /*!
00036  * @brief   Enter Manual Trigger mode
00037  * @param   device[in] - device instance
00038  * @return  SUCCESS in case of success, negative error code otherwise.
00039  */
00040 int32_t ad4696_enable_manual_trigger_mode(struct ad469x_dev *device)
00041 {
00042     do 
00043     {
00044         if (ad469x_spi_reg_write(device,
00045             AD469x_REG_SETUP, 
00046             AD469x_REG_SETUP_RESET) != SUCCESS) {
00047             break;
00048         }
00049     
00050         if (ad469x_spi_reg_write(device,
00051             AD469x_REG_SEQ_CTRL, 
00052             AD469x_REG_SEQ_CTRL_RESET) != SUCCESS) {
00053             break;
00054         }
00055 
00056         return SUCCESS;
00057     } while (0);
00058     
00059     return FAILURE;
00060 }
00061 
00062 /*!
00063  * @brief   Select between polarity modes
00064  * @param   device[in] - device instance
00065  * @return  SUCCESS in case of success, negative error code otherwise.
00066  */
00067 int32_t ad4696_polarity_mode_select(struct ad469x_dev *device)
00068 {
00069     uint8_t data = 0;
00070 
00071     for (uint8_t i = 0; i < AD469x_CHANNEL_NO;i++)
00072     {
00073         if (ad469x_spi_reg_read(device,
00074             AD469x_REG_CONFIG_IN(i), 
00075             &data) != SUCCESS) {
00076             return FAILURE;
00077         }
00078         
00079 #if defined(PSEUDO_BIPOLAR_MODE)         
00080         data |= (AD469x_REG_CONFIG_IN_PAIR(AD469x_PSEUDO_BIPOLAR_MODE)
00081                 | AD469x_REG_CONFIG_IN_MODE(AD469x_INx_COM));
00082 #else
00083         data |= (AD469x_REG_CONFIG_IN_PAIR(AD469x_UNIPOLAR_MODE)
00084                 | AD469x_REG_CONFIG_IN_MODE(AD469x_INx_REF_GND));
00085 #endif
00086         
00087         if (ad469x_spi_reg_write(device,
00088             AD469x_REG_CONFIG_IN(i), 
00089             data) != SUCCESS) {
00090             return FAILURE;
00091         }
00092     }
00093     return SUCCESS;
00094 }