Renesas RA2A1 Application Note

Application Note

R01AN5795EJ0100 Rev.1.00 Page 1 of 24 Mar.31.21

RA2A1 Group

Board Control Program for QE for AFE

Introduction

The control program operates on RA2A1 on the EK-RA2A1 evaluation board, communicates commands with the AFE development support tool ‘QE for AFE’, and can set registers for analog IP and obtain the A/D conversion values as shown below.

⎯ 24-Bit Sigma-Delta A/D Converter (SDADC24) ⎯ 16-Bit A/D Converter (ADC16) ⎯ 12-Bit D/A Converter (DAC12) ⎯ 8-Bit D/A Converter (DAC8) ⎯ Operational Amplifier (OPAMP)

Target Device

RA2A1 (R7FA2A1AB3CFM)

Board to Be Operated

EK-RA2A1 Evaluation Kit for RA2A1 Microcontroller Group Available Communication I/F:

⎯ USB PCDC Communication ⎯ SCI UART Communication: A separate USB-UART adapter is required.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 2 of 24 Mar.31.21

Contents

1. Overview ................................................................................................................................. 3

1.1 System Overview ..................................................................................................................................... 3

1.2 Operation Confirmation Environment ...................................................................................................... 4

1.3 File Configurations................................................................................................................................... 5

1.4 Peripherals to Use ................................................................................................................................... 6

1.5 Pin Settings ............................................................................................................................................. 7

1.5.1 Pin List ................................................................................................................................................... 7

1.5.2 ADC16 Precautions When Using .......................................................................................................... 8

1.5.3 How LED1 Work .................................................................................................................................... 8

1.6 Communication Specifications ................................................................................................................ 9

1.6.1 Serial Communication Settings ............................................................................................................. 9

1.6.2 Connecting USB-UART adapter during UART communication ............................................................ 9

1.7 About Project Source Changes ............................................................................................................... 9

1.8 Related Documentation ........................................................................................................................... 9

2. How to Write FW ................................................................................................................... 10

2.1 Write Using e2 studio Integrated Development Environment (IDE) ...................................................... 10

2.1.1 Import Procedure ................................................................................................................................. 10

2.1.2 Notes on Building Project for USB PCDC Communication ................................................................. 10

2.1.3 Notes on Building Project for SCI UART Communication ................................................................... 11

2.2 Writing using Renesas Flash Programmer ........................................................................................... 12

3. Run Project ............................................................................................................................ 15

3.1 Connecting to PC .................................................................................................................................. 15

3.1.1 USB PCDC Communication ................................................................................................................ 15

3.1.2 USB PCDC Communication ................................................................................................................ 15

3.2 Launch QE for AFE ............................................................................................................................... 16

3.2.1 Preparation .......................................................................................................................................... 16

3.2.2 Launching QE for AFE and Connecting to Target Board .................................................................... 16

3.2.3 Operation Confirmation ....................................................................................................................... 16

3.3 Sample Configuration File ..................................................................................................................... 17

3.3.1 Configuration Overview of Sample Configuration File ........................................................................ 18

3.3.2 Setting Procedure after Import ............................................................................................................ 19

3.3.2.1 Project for USB PCDC Communication ............................................................................................ 19

3.3.2.2 Project for SCI UART Communication .............................................................................................. 20

3.4 QE for AFE Tuning Execution ............................................................................................................... 21

3.4.1 Writing Setting Value ........................................................................................................................... 21

3.4.2 Tuning Operation ................................................................................................................................. 22

Revision History ............................................................................................................................ 24

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 3 of 24 Mar.31.21

1. Overview

1.1 System Overview

This control program (hereinafter abbreviated as ‘FW’) operates on RA2A1 on the EK-RA2A1 board. You can communicate using ‘QE for AFE’ via USB PCDC or SCI UART and control the following according

to the command request from ‘QE for AFE’:

⎯ Register Settings for 24-Bit Sigma-Delta A/D Converter (SDADC24) ⎯ Register Settings for 16-Bit A/D Converter (ADC16) ⎯ Register Settings for 12-Bit D/A Converter (DAC12) ⎯ Register Settings for 8-Bit D/A Converter (DAC8) ⎯ Operation Amplifier (OPAMP) Register Settings ⎯ Start/Stop 24-Bit Sigma-Delta A/D Conversion or 16-Bit A/D Conversion and send their A/D value

Figure 1-1 Connection Example for USB PCDC Communication

Figure 1-2 Connection Example for SCI UART Communication

QE for AFE

DEBUG

USB

UART

-USB

QE for AFE

DEBUG

USB

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 4 of 24 Mar.31.21

1.2 Operation Confirmation Environment

This FW is checked under the operating conditions shown in Table 1-1.

Table 1-1 Operating Confirmation Conditions

Items

Descriptions

MCU (When using USB PCDC)

Clock-related Registers SCKDIVCR = 0x10000101 SCKSCR = 0x00 (HOCO) SDADCCKCR = 0x81

R7FA2A1AB3CFM (Renesas RA2A1 MCU Group) Supply voltage: 3.3V HOCO :48MHz ICLK: 24MHz PCLKB: 24MHz PCLKD: 24MHz (used for ADC16) FCLK: 24MHz SDADCCLK: HOCO 48MHz UCLK: 48MHz

MCU (When using SCI UART)

Clock-related Registers SCKDIVCR = 0x11000101 SCKSCR = 0x00 (HOCO) SDADCCKCR = 0x81

R7FA2A1AB3CFM (Renesas RA2A1 MCU Group) Supply voltage: 3.3V HOCO: 64MHz ICLK: 32MHz PCLKB: 32MHz PCLKD: 32MHz (used for ADC16) FCLK: 32MHz SDADCCLK: HOCO 64MHz

IDE

Renesas e2 studio V2021-01 (21.1.0)

FSP

Use v1.20 (not included in the IDE above)

Tool Chain

GNU ARM Embedded 9.2.1.20191025

Emulator

SEGGER J-Link®

USB-UART Adapter

PmodTM USBUART

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 5 of 24 Mar.31.21

1.3 File Configurations

The following is a list of file configurations. The description of some folders and files is omitted.

r01an5795xx0100-ra2a1-serial

├─ek_ra2a1 │ ├─QE_for_AFE_uart e2 studio project for QE_for_AFE_uart (SCI UART Communication) │ │ ├─.settings │ │ ├─ra │ │ ├─ra_cfg │ │ ├─ra_gen │ │ ├─script │ │ └─src │ │ ├─hal_entry.c │ │ ├─hal_entry.h │ │ ├─r_common_config.h │ │ ├─r_common_func.c │ │ ├─r_common_func_if.h │ │ ├─r_communication_control_api.c │ │ ├─r_communication_control_api_if.h │ │ ├─r_interrupt_callback.c │ │ ├─r_interrupt_callback_if.h │ │ ├─r_reg_chk.c │ │ ├─r_reg_chk_if.h │ │ ├─r_ring_buffer_control_api.c │ │ ├─r_ring_buffer_control_api_if.h │ │ └─r_usb_pcdc_descriptor.c │ └─QE_for_AFE_usb e2 studio project for QE_for_AFE_uart (USB PCDC Communication) │ ├─.settings │ ├─ra │ ├─ra_cfg │ ├─ra_gen │ ├─script │ └─src │ ├─hal_entry.c │ ├─hal_entry.h │ ├─r_common_config.h │ ├─r_common_func.c │ ├─r_common_func_if.h │ ├─r_communication_control_api.c │ ├─r_communication_control_api_if.h │ ├─r_interrupt_callback.c │ ├─r_interrupt_callback_if.h │ ├─r_reg_chk.c │ ├─r_reg_chk_if.h │ ├─r_ring_buffer_control_api.c │ ├─r_ring_buffer_control_api_if.h │ └─r_usb_pcdc_descriptor.c ├─Hex │ ├─QE_for_AFE_uart.hex Hex file for USB PCDC Communication (QE_for_AFE_uart) │ └─QE_for_AFE_usb.hex Hex file for SCI UART Communication (QE_for_AFE_usb) ├─qe4qfe_setting │ └─qe4afe_sample.2a1 Samle congiguration file for QE_for_AFE ├─r01an5795ej0100-ra2a1-serial.pdf └─r01an5795jj0100-ra2a1-serial.pdf

Figure 1-3 File Configurations

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 6 of 24 Mar.31.21

1.4 Peripherals to Use

The following shows the list of peripherals used in this FW, and the settings for each peripheral function are shown below.

Table 1-2 Peripheral Features List

Project

Intended Use

SDADC24

A/D measurement

ADC16

A/D measurement

DAC12

D/A output (output function from pin is not supported)

DAC8

D/A output (output function from pins is not supported)

OPAMP

Amplification of analog input voltage

USB FS [Note 1]

Communication: Used of PCDC

SCI0 [Note 1]

Communication: Used of UART communication: Use the PMOD B connector

DTC

Used for SCI0 UART communication

AGT0/1

Reservations (currently unused)

Note 1: Select either USB PCDC or SCI0 UART as communication I/F.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 7 of 24 Mar.31.21

1.5 Pin Settings

1.5.1 Pin List

The following is a list of pins used in this FW.

Table 1-3 Pins used List

Configuration Function

Content

P400

CMPIN0

Used as an analog pin [Note 2]

P401

RTS Pin Assignment for SCI0 UART (L Fixed)

P402

- 4 P403

P403

- 5 VCL

VCL

- 6 P215

XCIN

- 7 P214

XCOUT

- 8 VSS

VSS

- 9 P213

XTAL

P212

EXTAL

VCC

XCOUT

P411

TXD0 pin for SCI0 UART

P410

P409

P408

CMPIN1

Used as an analog pin [Note 2]

P407

USB_VBUS

USB FS VBUS

VSS_USB

P915

USB_DM

D- I/O pin for on-chip USB transceiver

P914

USB_DP

D+ I/O pin for on-chip USB transceiver

VCC_USB

VCC_USB_LDO

P206

P205

For LED1 control

P204

RXD0 pin for SCI0 UART

Nothing

P201

MD - 27

P200

P304

P303

P302

P301

P300

SWCLK

P108

SWDIO

P110

CMPREF1

Reference voltage input pin [Note 2]

P111

P112

ADREG

SBIAS/VREFI

SBIAS/VREF1

AVCC1

AVSS1

P107

ANSD3N/AN023

Used as an analog pin

P106

ANDS3P/AN022

Used as an analog pin

P105

ANSD2N/AN021

Used as an analog pin

P104

ANDS2P/AN020

Used as an analog pin

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 8 of 24 Mar.31.21

P103

ANSD1N/AN019

Used as an analog pin

P102

ANDS1P/AN018

Used as an analog pin

P101

ANSD0N/AN017/IVREF2

Used as an analog pin

P100

ANDS0P/AN016/IVCMP2

Used as an analog pin

P500

AN000/IVCMP0/AMP0+/DA12_0

Used as an analog pin [Note 1]

P501

AN001/IVREF0/AMP0-

Used as an analog pin

P502

AN002/AMP0O

Used as an analog pin

P015

AN003/AMP1O

Used as an analog pin

P014

AN004/IVREF1/AMP1-

Used as an analog pin

P013

AN005/IVCMP1/AMP1+/DA8_0

Used as an analog pin [Note 1]

P012

AN008/AMP2O

Used as an analog pin

AVCC0

AVSS0

VREFL0

ADC16 reference power supply (Low potential reference voltage)

VREFH0

ADC16 reference power supply (High potential reference voltage)

P003

AN006/AMP2-

Used as an analog pin

P002

AN007/AMP2+/DA8_1

Used as an analog pin [Note 1]

P001

P000

P109

CMPREF0

Reference voltage input pin [Note 2]

Note 1: It cannot be used as a D/A output pin. Note 2: It is for ACMPHS/ACMPLP and cannot be used.

1.5.2 ADC16 Precautions When Using

The reference power supply pin (VREFH0) or internal reference voltage for the ADC16 (VREFADC) is selectable as the high potential reference voltage. The low potential reference voltage is the reference power supply ground pin (VRVEFL0).

On the EK-RA2A1 board, the VREFH0 and VREFL0 are open. Therefore, the VREFL0 must be set when using ADC16.

When connecting to AVSS0, connect to J2 34 pin (VREFL0) and J2 36 pin (AVSS0) on EK-RA2A1 board.

Because they are pins next to each other, it can be easily connected using a jumper as shown below.

Figure 1-4 Connecting J2 34-pin (VREFL0) and J2 36-pin (AVSS0) on Board Using ADC16

1.5.3 How LED1 Work

The LED1 on the EK-RA2A1 board lights up during A/D conversion operation on the SDADC24 or ADC16. By opening the copper jumper E3 on the EK-RA2A1 board, LED lighting can be suppressed. For more

information, refer to ‘5.4.4 LEDs’ in the ‘EK-RA2A1 v1 User Manual (R20UT4580EU0101)’.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 9 of 24 Mar.31.21

1.6 Communication Specifications

The communication specifications for ‘QE for AFE’ and FW are as follows.

1.6.1 Serial Communication Settings

The serial communication settings for UART communication are as follows:

Table 1-4 Serial Communication Settings

Items

Settings

Transfer Speed

Default: 1M bps Maximum: 3M bps [Note 1]

Data Length

8-bit

Parity

No parity

Stop Bit

1-bit

Hardware Flow Control

CTS function disabled (RTS function enabled) Assigned the RTS pin to the P401 and L-fixed is output

Note 1: Depends on the specifications of the USB-UART adapter that connects to the PMOD B connector on

the EK-RA2A1 board. Therefore, 3M bps may not be supported.

1.6.2 Connecting USB-UART adapter during UART communication

Connect the USB-UART adapter to the PMOD B connector on the EK-RA2A1 board. For information about the USB-UART adapter used to confirmed operation, refer to ‘1.2 Operation

Confirmation Environment’.

1.7 About Project Source Changes

Do not change any settings other than the clock settings in FSP Configuration.

1.8 Related Documentation

• Renesas RA2A1 Group User's Manual: Hardware (R01UH0888EJ0100)

• Renesas RA2A1 Group Evaluation Kit for RA2A1 Microcontroller Group EK-RA2A1 Quick Start Guide

(R20QS0010EU0102)

• Renesas RA2A1 Group Evaluation Kit for RA2A1 Microcontroller Group EK-RA2A1 v1 User's Manual (R20UT4580EU0101)

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 10 of 24 Mar.31.21

2. How to Write FW

The method of writing FW to the EK-RA2A1 board is shown below.

2.1 Write Using e2 studio Integrated Development Environment (IDE)

Import the project, build the project, and write to RA2A1 on the EK-RA2A1 board. The following projects are included.

Table 2-1 e2 studio Project

Project Name

Folder Name

USB PCDC Communication Project

QE_for_AFE_usb.hex

SCI UART Communication Project

QE_for_AFE_uart.hex

2.1.1 Import Procedure

The import procedure is shown in the figure below.

Figure 2-1 Steps to Import a Project into e2 studio

2.1.2 Notes on Building Project for USB PCDC Communication

Two Warnings occur during build. Ignore it because it is used by a program for unused functions.

Figure 2-2 Project Build Results for USB PCDC Communication Project

Select ’Import’.

Select ’Existing Project into Workspace’.

Select the directory where the project is stored.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 11 of 24 Mar.31.21

2.1.3 Notes on Building Project for SCI UART Communication

After import, the warning occurs as follows. This indicates an error for USB clock configuration. The SCI UART communication project does not use USB I/F. Therefore, ignore it.

Figure 2-3 Warning in FSP Configuration for SCI UART Communication Project

Also, two warnings occur during build. Ignore it because it is used by a program for unused functions.

Figure 2-4 Project Build Results for SCI UART Communication Project

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 12 of 24 Mar.31.21

2.2 Writing using Renesas Flash Programmer

You can write HEX files to the RA2A1 on the EK-RA2A1 board using Renesas Flash Programmer. The following HEX files are included.

Table 2-2 HEX Files

HEX Files

File Name

HEX File for USB PCDC Communication

QE_for_AFE_usb.hex

HEX File for SCI UART Communication

QE_for_AFE_uart.hex

Get the Renesas Flash Programmer that supports RA Family from the following.

Renesas Flash Programmer (Programming GUI) | Renesas

The following is the explanation when using Renesas Flash Programmer V3.08.01.

Also, make the Renesas Flash Programmer aware of the EK-RA2A1 board. The procedure is shown below:

(1) Switch J8 Jumper on EK-RA2A1 Board

Switch the J8 jumper to ‘SCI/USB BOOT’.

Figure 2-5 Setting J8 Jumper to ‘SCI/USB BOOT’ (Set When Writing FW)

(2) Connect PC to EK-RA2A1 Board

Connect both DEBUG USB and DEVICE USB to your PC. At this point, the PC device manager recognizes the EK-RA2A1 board as USB Serial Device.

(3) Press RESET Button

Press the RESET button. The PC device manager recognizes the EK-RA2A1 board as ‘RA USB Boot(CDC)’.

Figure 2-6 RESET Button

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 13 of 24 Mar.31.21

(4) Launch the Renesas Flash Programmer (a) If No Project for RA Family Has Been Created

Create a new project. Set the ‘Microcontroller’ in ‘Project Information’ to “RA”. Set the ‘Tool’ of ‘Communication’ to "COM port".

Figure 2-7 Setting of ‘Microcontroller’ and ‘Tool’

Click ‘Tool Details…’ in ‘Communication’ and select "RA USB Boot(CDC)" on the ‘Select Tool’ tab. After confirming, click "OK".

If you see USB Serial Device, check the J8 jumper setting and press RESET button again.

Figure 2-8 "RA USB Boot(CDC)" Selected

Return to the ‘Create New Project Window’ and click “Connect”. Renesas Flash Programmer starts the connection process.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 14 of 24 Mar.31.21

(b) If Project for RA Family Has Been Created

Open the project. Click on the ‘Connect Settings’ tab.

Figure 2-9 Setting of ‘Connect Setting’ Tab

Set the ‘Tool’ of ‘Communication’ to "COM port". Refer to also ‘Figure 2-7 Setting of ‘Microcontroller’ and ‘Tool’ ’.

Click ‘Tool Details’ in ‘Communication’ and select "RA USB Boot(CDC)" on the ‘Select Tool’ tab. Refer to also ‘Figure 2-8 "RA USB Boot(CDC)" Selected’. After confirming, click "OK".

If you see USB Serial Device, check the J8 jumper setting and press RESET button again.

(5) Follow Instructions in Renesas Flash Programmer to Write FW

Note: After the write is complete, be sure to return the J8 jumper to its original state and press the RESET button.

Figure 2-10 Set J8 Jumper to ‘INTERNAL FLASH’ (Return to Original Setting after Writing)

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 15 of 24 Mar.31.21

3. Run Project

3.1 Connecting to PC

Debug USB I/F provides a power supply voltage for the EK-RA2A1 board. Refer to the ‘EK-RA2A1 v1 User's Manual (R20UT4580EU0101)’.

Connection examples are shown below.

3.1.1 USB PCDC Communication

Figure 3-1 Connection Example for USB PCDC Communication

3.1.2 USB PCDC Communication

Turn on the power with the connection described in the EK-RA2A1 board manual. Some USB-UART adapters can supply 3.3V voltage from the adapter. Do not use the function. This is

because the EK-RA2A1 board is powered from two different power sources.

Figure 3-2 Connection Example for SCI UART Communication

QE for AFE

DEBUG

USB

UART

-USB

QE for AFE

DEBUG

USB

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 16 of 24 Mar.31.21

3.2 Launch QE for AFE

Launch ‘QE for AFE’ and evaluate it according to the operating procedure. For details on the operation of ‘QE for AFE’, refer to the ‘QE for AFE’ manual.

3.2.1 Preparation

Prepare the following in advance.

(1) Connection J2 34 Pin (VREFL0) and J2 36 Pin (AVSS0) on EK-RA2A1 Board

Refer to ‘1.5.2 ADC16 Precautions When Using’.

(2) Writing FW

Refer to ‘2 How to Write FW’. Also, when writing using Renesas Flash Programmer, make sure that the J8 jumper is set to ‘INTERNAL FLASH’. Otherwise, you will not be able to get the correct A/D value.

(3) Connection between PC and EK-RA2A1 Board

Refer to ‘3.1 Connecting to PC’.

3.2.2 Launching QE for AFE and Connecting to Target Board

Follow the steps below to connect the target board.

(1) Launching QE for AFE

(2) Connection with Target Board

Check the COM number of USB Serial Device in the PC device manager and select the COM number from ‘COM Port:’.

Figure 3-3 Selecting COM Number

Also, check the following display on the console. [Info]Connect succeed.

Figure 3-4 Message on Console when Connection is Successful

3.2.3 Operation Confirmation

You can check the operation using the included sample setting file. For the contents of the sample configuration file, refer to ‘3.3 Sample Configuration File’. For the operation method using the sample setting file, refer to ‘3.4 QE for AFE Tuning Execution’.

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 17 of 24 Mar.31.21

3.3 Sample Configuration File

The sample configuration file for ‘QE for AFE’ that has been confirmed to work has been stored. You can easily confirm the operation by importing the sample configuration file.

Table 3-1 Sample Configuration Files for Operation Confirmation

Settings File

File Name

Sample configuration file

qe4afe_sample.2a1

Click the icon below and select the import file above.

Figure 3-5 Icon for ‘Import setting file’

The file is selected, the "Register setting file" window is displayed. The sample configuration file contains the settings for "SDADC24", "ADC16", "OPAMP", "DAC8", and

"DAC12".

Figure 3-6 ‘Register setting file’ Window

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 18 of 24 Mar.31.21

3.3.1 Configuration Overview of Sample Configuration File

The overview of the settings in the sample configuration file is shown below.

(1) OPAMP Settings Table 3-2 OPAMP Settings

AMP

Configuration Overview

AMP0 Operation Enabled

+: DAC12 output is connected to AMP0+ input

-: Voltage follower setting

AMP1 Operation Enabled

+: DA8_0 output is connected to AMP1+ input

-: Voltage follower setting

AMP2 Operation Enabled

+: DA8_1 output is connected to AMP2+ input

-: Voltage follower setting

(2) DAC12 Settings Table 3-3 DAC12 Settings

DAC12

Configuration Overview

DAC12 Operation Enabled

Output 1.0 V (It is possible to change the output voltage by changing DADR register.)

(3) DAC8 Settings Table 3-4 DAC8 Settings

DAC8

Configuration Overview

DAC8_0 Operation Enabled

Output 0.5 V (It is possible to change the output voltage by changing DACS0 register.)

DAC8_1 Operation Enabled

Output 1.5V (It is possible to change the output voltage by changing DACS1 register.)

(4) SDADC24 Settings Table 3-5 SDADC24 Settings

SDADC24

Configuration Overview

A/D Conversion Mode

Normal A/D conversion mode

Ch4 only Operation Enabled

Ch4: DAC12 output voltage can be A/D conversion.

PGA Settings (All Ch)

Gain=1, OSR=256, Single end setting, ‘Do not average the A/D conversion results’ setting

(5) ADC16 Settings Table 3-6 ADC16 Settings

ADC16

Configuration Overview

VREFH0

VREFADC= 2.5V

Ch Settings Only Ch2, Ch3, Ch8 Operation Enabled

Ch2: DAC12 output voltage can be A/D converted Ch3: DAC8_0 output voltage can be A/D converted Ch8: DAC8_1 output voltage can be A/D converted

Input mode

Single end setting

Single Ended Input A/D Conversion Data Inversion (ADCER)

Single ended A/D converted data of single ended mode for odd-channels inputs: ‘Data is stored in a range from 0 to 32767.’

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 19 of 24 Mar.31.21

3.3.2 Setting Procedure after Import

After importing, it is necessary to correct the setting values. The procedure for each project is shown below.

3.3.2.1 Project for USB PCDC Communication

(1) Clock Setting

After importing the file, set the clock first.

In the sample setting file, it is possible to acquire A / D of both SDADC24 and ADC16, so set both.

(a) SDADC24 Setting

Re-enter both places as shown below. By re-entering the setting value, the setting value is checked.

Figure 3-7 Clock Settings for SDADC24 during USB PCDC Communication (For HOCO 48MHz)

(b) ADC16 Setting

Re-enter both places as shown below. By re-entering the setting value, the setting value is checked.

Figure 3-8 Clock Settings for ADC16 during USB PCDC Communication (For HOCO 48MHz)

(2) Setting of ADC16 A/D Sampling State Register n (ADSSTRn)

Set "10.625" for all channels to be used as follows so that the value of ADSSTRn is 0xFF.

A/D scan end interrupt occurs during interrupt processing and A/D scan does not operate normally. Therefore, it is necessary to set the ADSSTRn and adjust the sampling time.

Figure 3-9 Settings for ADC16 ADSSTRn during USB PCDC Communication

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 20 of 24 Mar.31.21

3.3.2.2 Project for SCI UART Communication

(1) Clock Setting

After importing the file, set the clock first.

In the sample setting file, it is possible to acquire A / D of both SDADC24 and ADC16, so set both.

(a) SDADC24 Setting

Re-enter both places as shown below. By re-entering the setting value, the setting value is checked.

Figure 3-10 Clock Settings for SDADC24 during SCI UART Communication (For HOCO 64MHz)

(b) ADC16 Setting

Re-enter both places as shown below. By re-entering the setting value, the setting value is checked.

Figure 3-11 Clock Settings for ADC16 during SCI UART Communication (For HOCO 64MHz)

(2) Setting of ADC16 A/D Sampling State Register n (ADSSTRn)

Set "7.96875" for all channels to be used as follows so that the value of ADSSTRn is 0xFF.

A/D scan end interrupt occurs during interrupt processing and A/D scan does not operate normally. Therefore, it is necessary to set the ADSSTRn and adjust the sampling time.

Figure 3-12 Settings for ADC16 ADSSTRn during SCI UART Communication

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 21 of 24 Mar.31.21

3.4 QE for AFE Tuning Execution

3.4.1 Writing Setting Value

Write the setting value to the target board for all controlled tabs (in case of the sample configuration file, ‘SDADC24’, ‘ADC16’, ‘OPAMP’, ‘DAC8’, and ‘DAC12’ tabs) on ‘AFE Connection’.

Figure 3-13 Icon for ‘Write Value to the Target Board’

After importing the configuration file, write in all controlled tabs and check the following display on the console.

If all controlled registers are not written. it is not possible to control correctly. [Info]Write ‘IP Name’ register value to the target board successfully.

Figure 3-14 Message on Console when Writing is Successful

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 22 of 24 Mar.31.21

3.4.2 Tuning Operation

The capture screen at run time is shown below. Click ‘AD Monitor’. Then, it will switch to the tuning screen. Click the icon for ‘Start AFE Tuning’ to start A/D conversion.

Figure 3-15 Icon for ‘Start AFE Tuning’

(1) SDADC24

The A/D value acquisition screen for Ch4 is shown in the figure below. To obtain the A/D value for Ch4 only, "Auto Scale" is set to disabled, and the Y axis is displayed in the maximum range.

If you want to change the output voltage of DAC12, stop tuning, change the DAC12 DADR register and write. Pay attention to the input allow voltage (0.2 to1.8V) of the SDADC24 and set the output voltage of DAC12.

Figure 3-16 QE for AFE Operating Screen (SDADC24, DAC12 Output Voltage =1.0V)

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 23 of 24 Mar.31.21

(2) ADC16

The A/D value acquisition screen for Ch2, Ch3, and Ch8 is shown in the figure below. Since the measured voltage is 0.5V to 1.5V, it is displayed by enabling "Autoscale". If necessary, you can

disable "Autoscale" to zoom in/out. If you want to change the output voltages of DAC12 and DAC8, stop tuning, change theDAC12 DADR

register, DAC8n DACSn registers, and write. In this setting, the reference power supply VREFH0 is 2.5V for ADC16. Carefully set the output voltage of

DAC12 and DAC8.

Figure 3-17 QE for AFE Operating Screen (ADC16, DAC12 output voltage = 1.0V, DAC8_0 output

voltage = 0.5V, DAC8_1 output voltage= 1.5V)

RA2A1 Group Board Control Program for QE for AFE

R01AN5795EJ0100 Rev.1.00 Page 24 of 24 Mar.31.21

Revision History

Rev.

Date

Description

Page

Summary

1.00

Mar.31.21

First Release

General Precautions in the Handling of Microprocessing Unit and Microcontroller Unit Products

The following usage notes are applicable to all Microprocessing unit and Microcontroller unit products from Renesas. For detailed usage notes on the products covered by this document, refer to the relevant sections of the document as well as any technical updates that have been issued for the products.

1. Precaution against Electrostatic Discharge (ESD) A strong electrical field, when exposed to a CMOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop the generation of static electricity as much as possible, and quickly dissipate it when it occurs. Environmental control must be adequate. When it is dry, a humidifier should be used. This is recommended to avoid using insulators that can easily build up static electricity. Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work benches and floors must be grounded. The operator must also be grounded using a wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions must be taken for printed circuit boards with mounted semiconductor devices.

2. Processing at power-on The state of the product is undefined at the time when power is supplied. The states of internal circuits in the LSI are indeterminate and the states of register settings and pins are undefined at the time when power is supplied. In a finished product where the reset signal is applied to the external reset pin, the states of pins are not guaranteed from the time when power is supplied until the reset process is completed. In a similar way, the states of pins in a product that is reset by an on-chip power-on reset function are not guaranteed from the time when power is supplied until the power reaches the level at which resetting is specified.

3. Input of signal during power-off state Do not input signals or an I/O pull-up power supply while the device is powered off. The current injection that results from input of such a signal or I/O pull-up power supply may cause malfunction and the abnormal current that passes in the device at this time may cause degradation of internal elements. Follow the guideline for input signal during power-off state as described in your product documentation.

4. Handling of unused pins Handle unused pins in accordance with the directions given under handling of unused pins in the manual. The input pins of CMOS products are generally in the high-impedance state. In operation with an unused pin in the open-circuit state, extra electromagnetic noise is induced in the vicinity of the LSI, an associated shoot-through current flows internally, and malfunctions occur due to the false recognition of the pin state as an input signal become possible.

5. Clock signals After applying a reset, only release the reset line after the operating clock signal becomes stable. When switching the clock signal during program execution, wait until the target clock signal is stabilized. When the clock signal is generated with an external resonator or from an external oscillator during a reset, ensure that the reset line is only released after full stabilization of the clock signal. Additionally, when switching to a clock signal produced with an external resonator or by an external oscillator while program execution is in progress, wait until the target clock signal is stable.

6. Voltage application waveform at input pin Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the CMOS device stays in the area between VIL (Max.) and VIH (Min.) due to noise, for example, the device may malfunction. Take care to prevent chattering noise from entering the device when the input level is fixed, and also in the transition period when the input level passes through the area between VIL (Max.) and VIH (Min.).

7. Prohibition of access to reserved addresses Access to reserved addresses is prohibited. The reserved addresses are provided for possible future expansion of functions. Do not access these addresses as the correct operation of the LSI is not guaranteed.

8. Differences between products Before changing from one product to another, for example to a product with a different part number, confirm that the change will not lead to problems. The characteristics of a microprocessing unit or microcontroller unit products in the same group but having a different part number might differ in terms of internal memory capacity, layout pattern, and other factors, which can affect the ranges of electrical characteristics, such as characteristic values, operating margins, immunity to noise, and amount of radiated noise. When changing to a product with a different part number, implement a systemevaluation test for the given product.

Notice

1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. You are fully responsible for the incorporation or any other use of the circuits, software, and information in the design of your product or system. Renesas Electronics disclaims any and all liability for any losses and damages incurred by you or third parties arising from the use of these circuits, software, or information.

2. Renesas Electronics hereby expressly disclaims any warranties against and liability for infringement or any other claims involving patents, copyrights, or other intellectual property rights of third parties, by or arising from the use of Renesas Electronics products or technical information described in this document, including but not limited to, the product data, drawings, charts, programs, algorithms, and application examples.

3. No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics or others.

4. You shall not alter, modify, copy, or reverse engineer any Renesas Electronics product, whether in whole or in part. Renesas Electronics disclaims any and all liability for any losses or damages incurred by you or third parties arising from such alteration, modification, copying or reverse engineering.

5. Renesas Electronics products are classified according to the following two quality grades: “Standard” and “High Quality”. The intended applications for each Renesas Electronics product depends on the product’s quality grade, as indicated below. "Standard": Computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home

electronic appliances; machine tools; personal electronic equipment; industrial robots; etc.

"High Quality": Transportation equipment (automobiles, trains, ships, etc.); traffic control (traffic lights); large-scale communication equipment; key

financial terminal systems; safety control equipment; etc. Unless expressly designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not intended or authorized for use in products or systems that may pose a direct threat to human life or bodily injury (artificial life support devices or systems; surgical implantations; etc.), or may cause serious property damage (space system; undersea repeaters; nuclear power control systems; aircraft control systems; key plant systems; military equipment; etc.). Renesas Electronics disclaims any and all liability for any damages or losses incurred by you or any third parties arising from the use of any Renesas Electronics product that is inconsistent with any Renesas Electronics data sheet, user’s manual or other Renesas Electronics document.

6. When using Renesas Electronics products, refer to the latest product information (data sheets, user’s manuals, application notes, “General Notes for Handling and Using Semiconductor Devices” in the reliability handbook, etc.), and ensure that usage conditions are within the ranges specified by Renesas Electronics with respect to maximum ratings, operating power supply voltage range, heat dissipation characteristics, installation, etc. Renesas Electronics disclaims any and all liability for any malfunctions, failure or accident arising out of the use of Renesas Electronics products outside of such specified ranges.

7. Although Renesas Electronics endeavors to improve the quality and reliability of Renesas Electronics products, semiconductor products have specific characteristics, such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Unless designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not subject to radiation resistance design. You are responsible for implementing safety measures to guard against the possibility of bodily injury, injury or damage caused by fire, and/or danger to the public in the event of a failure or malfunction of Renesas Electronics products, such as safety design for hardware and software, including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. Because the evaluation of microcomputer software alone is very difficult and impractical, you are responsible for evaluating the safety of the final products or systems manufactured by you.

8. Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product. You are responsible for carefully and sufficiently investigating applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive, and using Renesas Electronics products in compliance with all these applicable laws and regulations. Renesas Electronics disclaims any and all liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations.

9. Renesas Electronics products and technologies shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. You shall comply with any applicable export control laws and regulations promulgated and administered by the governments of any countries asserting jurisdiction over the parties or transactions.

10. It is the responsibility of the buyer or distributor of Renesas Electronics products, or any other party who distributes, disposes of, or otherwise sells or transfers the product to a third party, to notify such third party in advance of the contents and conditions set forth in this document.

11. This document shall not be reprinted, reproduced or duplicated in any form, in whole or in part, without prior written consent of Renesas Electronics.

12. Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronics products.

(Note1) “Renesas Electronics” as used in this document means Renesas Electronics Corporation and also includes its directly or indirectly controlled

subsidiaries.

(Note2) “Renesas Electronics product(s)” means any product developed or manufactured by or for Renesas Electronics.

(Rev.4.0-1 November 2017)

Corporate Headquarters

Contact information

TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan

www.renesas.com

For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit:

www.renesas.com/contact/.

Trademarks

PmodTM is a trademark of Digilent Inc. Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners.

Renesas RA2A1 Application Note

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Overview

1.1 System Overview

1.2 Operation Confirmation Environment

1.3 File Configurations

1.4 Peripherals to Use

1.5 Pin Settings

1.5.1 Pin List

1.5.2 ADC16 Precautions When Using

1.5.3 How LED1 Work

1.6 Communication Specifications

1.6.1 Serial Communication Settings

1.6.2 Connecting USB-UART adapter during UART communication

1.7 About Project Source Changes

1.8 Related Documentation

2. How to Write FW

2.1 Write Using e2 studio Integrated Development Environment (IDE)

2.1.1 Import Procedure

2.1.2 Notes on Building Project for USB PCDC Communication

2.1.3 Notes on Building Project for SCI UART Communication

2.2 Writing using Renesas Flash Programmer

(1) Switch J8 Jumper on EK-RA2A1 Board

(2) Connect PC to EK-RA2A1 Board

(3) Press RESET Button

(b) If Project for RA Family Has Been Created

(5) Follow Instructions in Renesas Flash Programmer to Write FW

3. Run Project

3.1 Connecting to PC

3.1.1 USB PCDC Communication

3.1.2 USB PCDC Communication

3.2 Launch QE for AFE

3.2.1 Preparation

(1) Connection J2 34 Pin (VREFL0) and J2 36 Pin (AVSS0) on EK-RA2A1 Board

(2) Writing FW

(3) Connection between PC and EK-RA2A1 Board

3.2.2 Launching QE for AFE and Connecting to Target Board

(1) Launching QE for AFE

(2) Connection with Target Board

3.2.3 Operation Confirmation

3.3 Sample Configuration File

3.3.1 Configuration Overview of Sample Configuration File

3.3.2 Setting Procedure after Import

3.3.2.1 Project for USB PCDC Communication

(1) Clock Setting

(a) SDADC24 Setting

(b) ADC16 Setting

(2) Setting of ADC16 A/D Sampling State Register n (ADSSTRn)

3.3.2.2 Project for SCI UART Communication

(1) Clock Setting

(a) SDADC24 Setting

(b) ADC16 Setting

(2) Setting of ADC16 A/D Sampling State Register n (ADSSTRn)

3.4 QE for AFE Tuning Execution

3.4.1 Writing Setting Value

3.4.2 Tuning Operation

(1) SDADC24

(2) ADC16

Revision History

General Precautions in the Handling of Microprocessing Unit and Microcontroller Unit Products

Notice