app_config.c

00001 /***************************************************************************//**
00002  *   @file    app_config.c
00003  *   @brief   Application configurations module
00004  *   @details This module contains the configurations needed for IIO application
00005 ********************************************************************************
00006  * Copyright (c) 2021 Analog Devices, Inc.
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 <stdbool.h>
00019 #include "app_config.h"
00020 #include "adc_data_capture.h"
00021 #include "error.h"
00022 #include "gpio.h"
00023 #include "irq.h"
00024 #include "pwm.h"
00025 #include "uart.h"
00026 
00027 /******************************************************************************/
00028 /************************ Macros/Constants ************************************/
00029 /******************************************************************************/
00030 
00031 /******************************************************************************/
00032 /*************************** Types Declarations *******************************/
00033 /******************************************************************************/
00034 
00035 /* External interrupt init parameters */
00036 static struct irq_init_param ext_int_init_params = {
00037     .irq_ctrl_id = EXTERNAL_INT_ID1,
00038     .extra = &ext_int_extra_init_params
00039 };
00040 
00041 /* External interrupt callback descriptor */
00042 static struct callback_desc ext_int_callback_desc = {
00043     data_capture_callback,
00044     NULL,
00045     NULL
00046 };
00047 
00048 /* PWM init parameters */
00049 static struct pwm_init_param pwm_init_params = {
00050     .id = EXT_TRIGGER_PIN,                          // GPIO used for PWM
00051     .period_ns = CONV_TRIGGER_PERIOD_NSEC,          // PWM period in nsec
00052     .duty_cycle_ns = CONV_TRIGGER_DUTY_CYCLE_NSEC   // PWM duty cycle in nsec
00053 }; 
00054 
00055 /* PWM descriptor */
00056 struct pwm_desc *pwm_desc;
00057 
00058 /* UART init parameters structure */
00059 struct uart_init_param uart_init_params = {
00060     .device_id = NULL,
00061     .baud_rate = IIO_UART_BAUD_RATE,
00062     .extra = &uart_extra_init_params
00063 };
00064 
00065 /* External interrupt descriptor */
00066 struct irq_ctrl_desc *ext_int_desc;
00067 
00068 /******************************************************************************/
00069 /************************ Functions Prototypes ********************************/
00070 /******************************************************************************/
00071 
00072 /******************************************************************************/
00073 /************************ Functions Definitions *******************************/
00074 /******************************************************************************/
00075 
00076 /**
00077  * @brief   Initialize the IRQ contoller
00078  * @return  SUCCESS in case of success, negative error code otherwise.
00079  * @details This function initialize the interrupts for system peripherals
00080  */
00081 static int32_t init_interrupt(void)
00082 {
00083     do {
00084         /* Init interrupt controller for external interrupt */
00085         if (irq_ctrl_init(&ext_int_desc, &ext_int_init_params) != SUCCESS) {
00086             break;
00087         }
00088         /* Register a callback function for external interrupt */
00089         if (irq_register_callback(ext_int_desc,
00090             EXTERNAL_INT_ID1,
00091             &ext_int_callback_desc) != SUCCESS) {
00092             break;
00093         }
00094         return SUCCESS;
00095     } while (0);
00096 
00097     return FAILURE;
00098 }
00099 
00100 /**
00101  * @brief   Initializing system peripherals
00102  * @return  SUCCESS in case of success, negative error code otherwise.
00103  * @details This function initializes system peripherals for the application
00104  */
00105 int32_t init_system(void)
00106 {
00107     if (init_interrupt() != SUCCESS)
00108         return FAILURE;
00109 
00110     /* Initialize the PWM interface to generate PWM signal
00111      * on conversion trigger event pin */
00112     if (pwm_init(&pwm_desc, &pwm_init_params) != SUCCESS) {
00113         return FAILURE;
00114     }
00115     
00116     return SUCCESS;
00117 }