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Table of Contents
AD5541A - No-OS Driver for Renesas Microcontroller Platforms
Supported Devices
Evaluation Boards
Overview
The AD5541A, AD5600 are single, 16-bit, serial input, unbuffered voltage output digital-to-analog converter (DAC) that operate from a single 2.7 V to 5.5 V supply.
The DAC output range extends from 0 V to VREF and is guaranteed monotonic, providing ±1 LSB INL accuracy at 16 bits without adjustment over the full specified temperature range of ?40°C to +125°C. The AD5541A is available in a 3 mm × 3 mm, 10-lead LFCSP and 10-lead MSOP. The AD5541A-1 is available in a 3 mm × 3 mm, 8-lead LFCSP.
Offering unbuffered outputs, the AD5541A, AD5600 achieve a 1 μs settling time with low power consumption and low offset errors. Providing low noise performance of 11.8 nV/√Hz and low glitch, the AD5541A, AD5600 are suitable for deployment across multiple end systems.
The AD5541A, AD5600 use a versatile 3-wire interface that is compatible with a 50 MHz SPI, QSPI?, MICROWIRE?, and DSP interface standards.
Applications
- Automatic test equipment
- Precision Source-measure Instruments
- Data Acquisition Systems
- Medical Instrumentation
- Aerospace Instrumentation
- Communications Infrastructure equipment
- Industrial Control
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 different microcontroller platforms.
Driver Description
The driver contains two parts:
- The driver for the AD5541A 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 AD5541A driver can be used exactly as it is provided.
There are three functions which are called by the AD5541A 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 AD5541A driver:
| Function | Description |
|---|---|
| char AD5541A_Init(void) | Initializes the communication peripheral and configures LDAC pin. |
| void AD5541A_SetRegisterValue(unsigned short registerValue) | Sends to DAC register through SPI the 16-bit data-word. |
| float AD5541A_SetVoltage(float outVoltage, float vRef) | Sets the output voltage. |
Downloads
- PmodDA3 Demo for RL78G14: https://github.com/analogdevicesinc/no-OS/tree/master/Renesas/RL78G14/PmodDA3
- RL78G14 Common Drivers: https://github.com/analogdevicesinc/no-OS/tree/master/Renesas/RL78G14/Common
Renesas RL78G13 Quick Start Guide
This section contains a description of the steps required to run the AD5541A demonstration project on a Renesas RL78G13 platform.
Required Hardware
Required Software
Hardware Setup
A PmodDA3 has to be connected to the PMOD1 connector, pins 1 to 6 (see image below).
Reference Project Overview
The reference project generates an 1 Hz sine wave on the J2 connector.
Software Project Tutorial
This section presents the steps for developing a software application that will run on the Renesas Demo Kit for RL78G13 for controlling and monitoring the operation of the ADI part.
- Run the IAR Embedded Workbench for Renesas RL78 integrated development environment.
- Choose to create a new project (Project – Create New Project).
- Select the RL78 tool chain, the Empty project template and click OK.
- Select a location and a name for the project (ADIEvalBoard for example) and click Save.
- Open the project’s options window (Project – Options).
- From the Target tab of the General Options category select the RL78 – R5F100LE device.
- From the Setup tab of the Debugger category select the TK driver and click OK.
- Extract the files from the lab .zip archive and copy them into the project’s folder.
- The new source files have to be included into the project. Open the Add Files… window (Project – Add Files…), select all the copied files and click open.
- At this moment, all the files are included into the project.
- The project is ready to be compiled and downloaded on the board. Press the F7 key to compile it. Press CTRL + D to download and debug the project.
- A window will appear asking to configure the emulator. Keep the default settings and press OK.
- To run the project press F5.
Renesas RL78G14 Quick Start Guide
This section contains a description of the steps required to run the AD5541A demonstration project on a Renesas RL78G14 platform using the PmodDA3.
Required Hardware
Required Software
- The AD5541A demonstration project for the Renesas RL78G14 platform.
The AD5541A demonstration project for the Renesas RL78G14 platform consists of three parts: the AD5541A Driver, the PmodDA3 Demo for RL78G14 and the RL78G14 Common Drivers.
All three parts have to be downloaded.
Hardware Setup
A PmodDA3 has to be connected to the PMOD1 connector, pins 1 to 6 (see image below).
Reference Project Overview
The reference project generates an 1 Hz sine wave on the J2 connector.
Software Project Tutorial
This section presents the steps for developing a software application that will run on the Renesas Demo Kit for RL78G14 for controlling and monitoring the operation of the ADI part.
- Run the IAR Embedded Workbench for Renesas RL78 integrated development environment.
- Choose to create a new project (Project – Create New Project).
- Select the RL78 tool chain, the Empty project template and click OK.
- Select a location and a name for the project (ADIEvalBoard for example) and click Save.
- Open the project’s options window (Project – Options).
- From the Target tab of the General Options category select the RL78 – R5F104PJ device.
- From the Setup tab of the Debugger category select the TK driver and click OK.
- Copy the downloaded files into the project's folder.
- The new source files have to be included into the project. Open the Add Files… window (Project – Add Files…), select all the copied files and click open.
- At this moment, all the files are included into the project.
- The project is ready to be compiled and downloaded on the board. Press the F7 key to compile it. Press CTRL + D to download and debug the project.
- A window will appear asking to configure the emulator. Keep the default settings and press OK.
- To run the project press F5.
Renesas RX62N Quick Start Guide
This section contains a description of the steps required to run the AD5541A demonstration project on a Renesas RX62N platform.
Required Hardware
Required Software
Hardware Setup
A PmodDA3 has to be interfaced with the Renesas Demonstration Kit (RDK) for RX62N:
PmodAD4 Pin 1 (CS) → YRDKRX62N J8 connector Pin 15 PmodAD4 Pin 2 (MOSI) → YRDKRX62N J8 connector Pin 19 PmodAD4 Pin 3 (LDAC) → YRDKRX62N J8 connector Pin 25 PmodAD4 Pin 4 (CLK) → YRDKRX62N J8 connector Pin 20 PmodAD4 Pin 5 (GND) → YRDKRX62N J8 connector Pin 4 PmodAD4 Pin 6 (VCC) → YRDKRX62N J8 connector Pin 3
Reference Project Overview
The reference project generates an 1 Hz sine wave on the J2 connector.
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.
More information
- Example questions:
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