app_config.c

00001 /***************************************************************************//**
00002  *   @file    app_config.c
00003  *   @brief   Application configurations module (platform-agnostic)
00004  *   @details This module performs the system configurations
00005 ********************************************************************************
00006  * Copyright (c) 2020-2021 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 
00020 #include "app_config.h"
00021 #include "adc_data_capture.h"
00022 #include "error.h"
00023 #include "uart.h"
00024 #include "gpio.h"
00025 #include "irq.h"
00026 #include "pwm.h"
00027 
00028 /******************************************************************************/
00029 /************************ Macros/Constants ************************************/
00030 /******************************************************************************/
00031 
00032 /******************************************************************************/
00033 /******************** Variables and User Defined Data Types *******************/
00034 /******************************************************************************/
00035 
00036 /* UART init parameters */
00037 struct uart_init_param uart_init_params = {
00038     .device_id = NULL,
00039     .baud_rate = IIO_UART_BAUD_RATE,
00040     .extra = &uart_extra_init_params
00041 };
00042 
00043 /* LED GPO init parameters */
00044 static struct gpio_init_param led_gpio_init_params = {
00045     .number = LED_GPO,
00046     .extra = NULL
00047 };
00048 
00049 /* External interrupt init parameters */
00050 static struct irq_init_param ext_int_init_params = {
00051     .irq_ctrl_id = EXTERNAL_INT_ID1,
00052     .extra = &ext_int_extra_init_params
00053 };
00054 
00055 /* External interrupt callback descriptor */
00056 static struct callback_desc ext_int_callback_desc = {
00057     data_capture_callback,
00058     NULL,
00059     NULL
00060 };
00061 
00062 /* PWM init parameters */
00063 static struct pwm_init_param pwm_init_params = {
00064     .id = PWM_TRIGGER,                              // GPIO used for PWM
00065     .period_ns = CONV_TRIGGER_PERIOD_NSEC,          // PWM period in nsec
00066     .duty_cycle_ns = CONV_TRIGGER_DUTY_CYCLE_NSEC   // PWM duty cycle in nsec
00067 };
00068 
00069 /* LED GPO descriptor */
00070 gpio_desc *led_gpio_desc;
00071 
00072 /* External interrupt descriptor */
00073 struct irq_ctrl_desc *ext_int_desc;
00074 
00075 /* PWM descriptor */
00076 struct pwm_desc *pwm_desc;
00077 
00078 /******************************************************************************/
00079 /************************** Functions Declarations ****************************/
00080 /******************************************************************************/
00081 
00082 /******************************************************************************/
00083 /************************** Functions Definitions *****************************/
00084 /******************************************************************************/
00085 
00086 /**
00087  * @brief   Initialize the GPIOs
00088  * @return  SUCCESS in case of success, FAILURE otherwise
00089  * @details This function initialize the GPIOs used by application
00090  */
00091 static int32_t init_gpio(void)
00092 {
00093     do {
00094         /* Initialize the LED GPO */
00095         if (gpio_get_optional(&led_gpio_desc, &led_gpio_init_params) != SUCCESS) {
00096             break;
00097         }
00098 
00099         if (gpio_direction_output(led_gpio_desc, GPIO_HIGH) != SUCCESS) {
00100             break;
00101         }
00102 
00103         return SUCCESS;
00104     } while (0);
00105 
00106     return FAILURE;
00107 }
00108 
00109 
00110 /**
00111  * @brief   Initialize the IRQ contoller
00112  * @return  SUCCESS in case of success, FAILURE otherwise
00113  * @details This function initialize the interrupts for system peripherals
00114  */
00115 static int32_t init_interrupt(void)
00116 {
00117     do {
00118         /* Init interrupt controller for external interrupt */
00119         if (irq_ctrl_init(&ext_int_desc, &ext_int_init_params) != SUCCESS) {
00120             break;
00121         }
00122 
00123         /* Register a callback function for external interrupt */
00124         if (irq_register_callback(ext_int_desc,
00125                       EXTERNAL_INT_ID1,
00126                       &ext_int_callback_desc) != SUCCESS) {
00127             break;
00128         }
00129 
00130         return SUCCESS;
00131     } while (0);
00132 
00133     return FAILURE;
00134 }
00135 
00136 
00137 /**
00138  * @brief   Initialize the PWM contoller
00139  * @return  SUCCESS in case of success, FAILURE otherwise
00140  */
00141 static int32_t init_pwm(void)
00142 {
00143     do {
00144         /* Initialize the PWM interface to generate PWM signal
00145          * on conversion trigger event pin */
00146         if (pwm_init(&pwm_desc, &pwm_init_params) != SUCCESS) {
00147             break;
00148         }
00149 
00150         if (pwm_enable(pwm_desc) != SUCCESS) {
00151             break;
00152         }
00153 
00154         return SUCCESS;
00155     } while (0);
00156 
00157     return FAILURE;
00158 }
00159 
00160 
00161 /**
00162  * @brief   Initialize the system peripherals
00163  * @return  SUCCESS in case of success, FAILURE otherwise
00164  */
00165 int32_t init_system(void)
00166 {
00167     if (init_gpio() != SUCCESS) {
00168         return FAILURE;
00169     }
00170 
00171     if (init_interrupt() != SUCCESS) {
00172         return FAILURE;
00173     }
00174 
00175     if (init_pwm() != SUCCESS) {
00176         return FAILURE;
00177     }
00178 
00179     return SUCCESS;
00180 }