app_config_mbed.h

00001 /***************************************************************************//*
00002  * @file    app_config_mbed.h
00003  * @brief   Header file for Mbed platform configurations
00004 ******************************************************************************
00005  * Copyright (c) 2021 Analog Devices, Inc.
00006  * All rights reserved.
00007  *
00008  * This software is proprietary to Analog Devices, Inc. and its licensors.
00009  * By using this software you agree to the terms of the associated
00010  * Analog Devices Software License Agreement.
00011 ******************************************************************************/
00012 
00013 #ifndef _APP_CONFIG_MBED_H_
00014 #define _APP_CONFIG_MBED_H_
00015 
00016 /******************************************************************************/
00017 /***************************** Include Files **********************************/
00018 /******************************************************************************/
00019 
00020 #include <stdint.h>
00021 #include <PinNames.h>
00022 
00023 #include "uart_extra.h"
00024 #include "irq_extra.h"
00025 #include "spi_extra.h"
00026 
00027 /******************************************************************************/
00028 /********************** Macros and Constants Definition ***********************/
00029 /******************************************************************************/
00030 
00031 // Pin mapping of AD7768-1 with arduino
00032 #define SPI_SS      D10     // SPI_CS
00033 #define SPI_MOSI    D11     // SPI_MOSI
00034 #define SPI_MISO    D12     // SPI_MISO
00035 #define SPI_SCK     D13     // SPI_SCK
00036 #define DRDY        D2      // Conversion ready interrupt
00037 
00038 /* Common pin mapping */
00039 #define UART_TX     USBTX
00040 #define UART_RX     USBRX
00041 #define LED_GREEN   LED3
00042 
00043 /* Define the max possible sampling frequency (or output data) rate for AD77681 (in SPS).
00044  * This is also used to find the time period to trigger a periodic conversion event.
00045  * Note: Max possible ODR is 64KSPS for continuous data capture on IIO Client.
00046  * This is derived by capturing data from the firmware using the SDP-K1 controller board
00047  * @22.5Mhz SPI clock. The max possible ODR can vary from board to board and
00048  * data continuity is not guaranteed above this ODR on IIO oscilloscope */
00049 
00050 /* AD77681 default internal clock frequency (MCLK = 16.384 Mhz) */
00051 #define AD77681_MCLK (16384)
00052 
00053 /* AD77681 decimation rate */
00054 #define AD77681_DECIMATION_RATE (32U)
00055 
00056 /* AD77681 default mclk_div value */
00057 #define AD77681_DEFAULT_MCLK_DIV (8)
00058 
00059 /* AD77681 ODR conversion */
00060 #define AD77681_ODR_CONV_SCALER (AD77681_DECIMATION_RATE * AD77681_DEFAULT_MCLK_DIV)
00061 
00062 /* AD77681 default sampling frequency */
00063 #define AD77681_DEFAULT_SAMPLING_FREQ   ((AD77681_MCLK * 1000) / AD77681_ODR_CONV_SCALER)
00064 
00065 /******************************************************************************/
00066 /********************* Public/Extern Declarations *****************************/
00067 /******************************************************************************/
00068 extern mbed_irq_init_param mbed_ext_int_init_param;
00069 extern mbed_uart_init_param mbed_uart_extra_init_param;
00070 extern mbed_spi_init_param mbed_spi_init_extra_params;
00071 
00072 #endif /* _APP_CONFIG_H_ */