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This version (21 Aug 2013 13:19) was approved by ACozma.The Previously approved version (02 Oct 2012 21:03) is available.Diff

ADAS1000 - Microcontroller No-OS Driver

Supported Devices

Evaluation Boards

Overview

The EVAL-ADAS1000SDZ is a fully featured evaluation kit for the ADAS1000. The evaluation kit consists of an evaluation board kitted with 2 ADAS1000 devices capable of demonstrating ECG capture up to 12 leads. Included in the kit is a medical grade +5V wall adaptor with interchangeable worldwide wall plugs and a CD with user software for data capture and display. The software allows control of all ADAS1000 registers, ability to capture and display ECG data, respiration data, pace pulse detection and store data for offline processing. This evaluation board is provided for silicon evaluation purposes and is not designed to be connected directly to animal or human. This board operates in conjunction with the System Development Platform (SDP) or alternatively may be interfaced to directly via a dedicated serial interface connector (J4). The SDP controller board connects to the PC via USB 2.0. The evaluation board connects to the SDP controller board. The ADAS1000 evaluation board cannot be connected directly to the PC. The evaluation software running on the PC will communicate with the evaluation board through the SDP Controller board. The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

The goal of this project (Microcontroller No-OS) is to be able to provide reference projects for lower end processors, which can't run Linux, or aren't running a specific operating system, to help those customers using microcontrollers with ADI parts. Here you can find a generic driver which can be used as a base for any microcontroller platform and also specific drivers for Renesas platforms.

HW Platform(s):

Driver Description

The driver contains two parts:

  • The driver for the ADAS1000 part, which may be used, without modifications, with any microcontroller.
  • The Communication Driver, where the specific communication functions for the desired type of processor and communication protocol have to be implemented. This driver implements the communication with the device and hides the actual details of the communication protocol to the ADI driver.

The Communication Driver has a standard interface, so the ADAS1000 driver can be used exactly as it is provided.

There are three functions which are called by the ADAS1000 driver:

  • SPI_Init() – initializes the communication peripheral.
  • SPI_Write() – writes data to the device.
  • SPI_Read() – reads data from the device.

SPI driver architecture

The following functions are implemented in this version of ADAS1000 driver:

Function Description
unsigned char ADAS1000_Init(unsigned long rate) Initializes the communication with ADAS1000 and checks if the device is present.
void ADAS1000_GetRegisterValue(unsigned char regAddress, unsigned long* regVal) Reads the value of a ADAS1000 register.
void ADAS1000_SetRegisterValue(unsigned char regAddress, unsigned long regVal) Writes a value into a ADAS1000 register.
void ADAS1000_SoftwareReset(void) Performs a software reset of the ADAS1000
void ADAS1000_SetInactiveFrameWords(unsigned long wordsMask) Selects which words are not included in a data frame.
void ADAS1000_SetFrameRate(unsigned long rate) Sets the frame rate
void ADAS1000_ReadData(unsigned char* pDataBuffer, unsigned long frameCnt, unsigned char startRead, unsigned char stopRead, unsigned char waitForReady, unsigned char readyRepeat) Reads the specified number of frames
unsigned long ADAS1000_ComputeFrameCrc(unsigned char *pBuf) Computes the CRC for a frame

Downloads

Renesas RX62N Quick Start Guide

This section contains a description of the steps required to run the ADAS1000 demonstration project on a Renesas RX62N platform.

Required Hardware

Required Software

Hardware Setup

An EVAL-ADAS1000SDZ board has to be interfaced with the Renesas Demonstration Kit (RDK) for RX62N:

  EVAL-ADAS1000SDZ J5 connector Pin DGND       →  YRDKRX62N J8 connector Pin 4 (GND)
  EVAL-ADAS1000SDZ J4 connector Pin 10 (SCLK)  →  YRDKRX62N LCD1 connector Pin 12 (SCLK)
  EVAL-ADAS1000SDZ J4 connector Pin 8 (CSB_0)  →  YRDKRX62N LCD1 connector Pin 11 (CS)
  EVAL-ADAS1000SDZ J4 connector Pin 7 (SDO_0)  →  YRDKRX62N LCD1 connector Pin 14 (MISO)
  EVAL-ADAS1000SDZ J4 connector Pin 4 (SDI_0)  →  YRDKRX62N LCD1 connector Pin 13 (MOSI)

Reference Project Overview

The following examples are implemented in the reference project:

  • Example on how to read and write a register;
  • Example how to start the ADCs Converting and begin streaming ECG data from ADAS1000 at 2kHz rate;
  • Example on how to Enable Respiration;
  • Example on how to enable DC Leads Off;
  • Example on how to enable Shield Amplifier;
  • Example on how to change the number of words in a frame;
  • Example on how to configure device and start streaming ECG data at 2kHz rate with Leads off enabled, respiration enabled;
  • Example on how to configure device and start streaming ECG data at 16kHz rate;
  • Example on how to configure device and start streaming ECG data at 128kHz rate.

The reference project also configures the 150Hz test tone Sinewave on each ECG channel, stores 1000 frames and sends data through the SCI port. The frames do not contain the Pace, Respiration Magnitude, Respiration Phase, Leads Off Status, GPIO and CRC words.

The format of the data transferred through the SCI port.

Software Project Setup

This section presents the steps for developing a software application that will run on the Renesas Demo Kit for RX62N for controlling and monitoring the operation of the ADI part.

  • Run the High-performance Embedded Workshop integrated development environment.
  • A window will appear asking to create or open project workspace. Choose “Create a new project workspace” option and press OK.
  • From “Project Types” option select “Application”, name the Workspace and the Project “ADIEvalBoard”, select the “RX” CPU family and “Renesas RX Standard” tool chain. Press OK.

  • A few windows will appear asking to configure the project:
    • In the ”Select Target CPU” window, select “RX600” CPU series, “RX62N” CPU Type and press Next.
    • In the “Option Setting” windows keep default settings and press Next.
    • In the “Setting the Content of Files to be generated” window select ”None” for the ”Generate main() Function” option and press Next.
    • In the “Setting the Standard Library” window press “Disable all” and then Next.
    • In the “Setting the Stack Area” window check the ”Use User Stack” option and press Next.
    • In the “Setting the Vector” window keep default settings and press Next.
    • In the “Setting the Target System for Debugging” window choose “RX600 Segger J-Link” target and press Next.
    • In the “Setting the Debugger Options” and “Changing the Files Name to be created” windows keep default settings, press Next and Finish.
  • The workspace is created.

  • The RPDL (Renesas Peripheral Driver Library) has to integrated in the project. Unzip the RPDL files (double-click on the file “RPDL_RX62N.exe”). Navigate to where the RPDL files were unpacked and double-click on the “Copy_RPDL_RX62N.bat” to start the copy process. Choose the LQFP package, type the full path where the project was created and after the files were copied, press any key to close the window.
  • The new source files have to be included in the project. Use the key sequence Alt, P, A to open the “Add files to project ‘ADIEvalBoard’” window. Double click on the RPDL folder. From the “Files of type” drop-down list, select “C source file (*.C)”. Select all of the files and press Add.

  • To avoid conflicts with standard project files remove the files “intprg.c” and “vecttbl.c” which are included in the project. Use the key sequence Alt, P, R to open the “Remove Project Files” window. Select the files, click on Remove and press OK.

  • Next the new directory has to be included in the project. Use the key sequence Alt, B, R to open the “RX Standard Toolchain” window. Select the C/C++ tab, select “Show entries for: Include file directories” and press Add. Select “Relative to: Project directory”, type “RPDL” as sub-directory and press OK.

  • The library file path has to be added in the project. Select the Link/Library tab, select “Show entries for: Library files” and press Add. Select “Relative to: Project directory”, type “RPDL\RX62N_library” as file path and press OK.

  • Because the “intprg.c” file was removed the “PIntPrg” specified in option “start” has to be removed. Change “Category” to “Section”. Press ”Edit”, select “PIntPRG” and press “Remove”. From this window the address of each section can be also modified. After all the changes are made press OK two times.

  • At this point the files extracted from the zip file located in the “Software Tools” section have to be added into the project. Copy all the files from the archive into the project folder.

  • Now, the files have to be included in the project. Use the key sequence Alt, P, A to open the “Add files to project ‘ADIEvalBoard’” window. Navigate into ADI folder. From the “Files of type” drop-down list, select “Project Files”. Select all the copied files and press Add.

  • Now, the project is ready to be built. Press F7. The message after the Build Process is finished has to be “0 Errors, 0 Warnings”. To run the program on the board, you have to download the firmware into the microprocessor’s memory.
03 Feb 2012 15:32 · Dragos Bogdan

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