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Renesas is a Japanese semiconductor manufacturer headquartered in Tokyo, Japan.

The brand Renesas is a contraction of “Renaissance Semiconductor for Advanced Solutions”, initially incorporated in 2002 as Renesas Technology, the consolidated entity of the semiconductor units of Hitachi and Mitsubishi excluding their dynamic random-access memory businesses.

It basically deals in automotive semiconductors and microcontrollers.

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jameshleo
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jameshleo
Asked: December 4, 2023In:
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Hi,I trying to do an worst case error estimation in my ADC readings and according to the Datasheet as shown below I’ve other error factors Offset, Full- scale, Absolute Accuracy, DNL, INL.We’re ...Read more

Hi,

I trying to do an worst case error estimation in my ADC readings and according to the Datasheet as shown below I’ve other error factors Offset, Full- scale, Absolute Accuracy, DNL, INL.

We’re trying to mitigate the Offset and Full- scale error by applying a Two-Point Calibration Method.

I would like to know do I need to consider Absolute accuracy as ± 2 even though I’ve compensated Offset and Full-scale error.

Also what about DNL and INL errors do I want to consider both in my calculations and INL is the integral sum of DNL errors.

Also should I consider Typ or Max values what’s the difference between them?

Thank You in Advance

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AccuracyadcCalculationDNLmicrocontrollerrenesasRenesas Microcontroller
  1. vikas Nagpal

    Hello Jameshleo, Thanks for reaching out to the Volt Tech Community. First, the max values for errors defined on the user's manual are the worst error values measured in the laboratory test environment for the full voltage range, while typical is the most usual error value without compensation. UsinRead more

    Hello Jameshleo,
    Thanks for reaching out to the Volt Tech Community.
    First, the max values for errors defined on the user’s manual are the worst error values measured in the laboratory test environment for the full voltage range, while typical is the most usual error value without compensation.
    Using software techniques such as Two- a point calibration system you cancel/ compensate offset and full-scale error.
    In the case of the Renesas specification, the Absolute Accuracy value is the total uncompensated error for all error terms( INL, DNL, Offset, Gain, and Quantization error terms).
    So, you can improve the Absolute Accuracy to be lower than using compensation methods.
    Also, find attached the INL meaning:

    The INL depends on the internal circuit architecture and from any possible distortion, caused by the front-end signal conditioning circuit.
    I hope it helps!
    Regards,
    Vikas Nagpal

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Tigerexch
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Tigerexch
Asked: October 26, 2023In:
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Hi, I make a design for simple Turn on the LED and off the LED. If i choose Subclock populated option to the populated the design isn’t debugging. If i choose Subclock populated option to the non populated also the design is debugged. is there any ...Read more

Hi,

I make a design for simple Turn on the LED and off the LED.

If i choose Subclock populated option to the populated the design isn’t debugging.

If i choose Subclock populated option to the non populated also the design is debugged.

is there any issue if i choose sub timer non polated please help.

I’m using FSP version 4.6, custom board.

Thank You

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boardcustomfspledrenesasSubclck
  1. ashishgawade

    Hello, Thanks for reaching out to the Volt Tech Community! However, the error occurs because the code is checking for a sub-clock, If you apply your customized board and you do not have a sub-clock connected to your board. So, yes the answer to this is to set the' Subclock Populated' value to' Not pRead more

    Hello,

    Thanks for reaching out to the Volt Tech Community!

    However, the error occurs because the code is checking for a sub-clock, If you apply your customized board and you do not have a sub-clock connected to your board.

    So, yes the answer to this is to set the’ Subclock Populated’ value to’ Not populated’.

    Regards,

    Ashish

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vikas Nagpal
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vikas Nagpal
Asked: September 11, 2023In:
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Hello, Three accompanied PWM waveforms Is there a recommended way of producing three accompanied PWM waveforms on an RA4M1? Two is easy with the two outputs from one counter, but how about three? Should I start two counters together, and hope for the ...Read more

Hello,

Three accompanied PWM waveforms

Is there a recommended way of producing three accompanied PWM waveforms on an RA4M1?
Two is easy with the two outputs from one counter, but how about three?

Should I start two counters together, and hope for the best?
Should I set one to count to a higher figure, and also use the second one to reset the first?

Thank You

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mcumicrocontrollerpwmra4m1renesaswaveforms
  1. Julian White

    Hello @Vikas, Thanks for posting your question online. Yes, one way to have multiple synchronized PWM waveforms is to start multiple counters at the same time, as you can see in the screenshot below Regards, Julian White

    Hello vikas Nagpal,

    Thanks for posting your question online.

    Yes, one way to have multiple synchronized PWM waveforms is to start multiple counters at the same time, as you can see in the screenshot below

    Regards,
    Julian White

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sachinsharma
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sachinsharma
Asked: July 8, 2023In:
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Hello, I’ve an EK-RA4M3 with MCUBOOT using SWAP. I want to create a single hex file for combining mcuboot and application. I’m assuming I just need to modify the Python script options to create a signed hex instead of a signed binary? Thank ...Read more

Hello,

I’ve an EK-RA4M3 with MCUBOOT using SWAP. I want to create a single hex file for combining mcuboot and application.

I’m assuming I just need to modify the Python script options to create a signed hex instead of a signed binary?

Thank You

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mcumcubootmicrocontrollerspythonra4m3renesasswap
  1. nidhi singh

    Hi, I'm sure it's possible to modify the Python signing program to output a hex file rather than binary by adding suitable code or pre-existing library. python imgtool.py sign -k mcuboot/root-rsa-2048.pem -v 1.0.0 --header-size 0x200 --align 4 --pad-header --pad-header-size 0x200 merged.hex signed.hRead more

    Hi,

    I’m sure it’s possible to modify the Python signing program to output a hex file rather than binary by adding suitable code or pre-existing library.

    python imgtool.py sign -k mcuboot/root-rsa-2048.pem -v 1.0.0 --header-size 0x200 --align 4 --pad-header --pad-header-size 0x200 merged.hex signed.hex

    In this example, merged.hex is the merged hex file, and signed.hex is the signed hex file that will be created. The –pad-header and –pad- header-size options are used to add padding to the title of the signed hex file, which is required by MCUBOOT.

    Thank You

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ashishgawade
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ashishgawade
Asked: June 29, 2023In:
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Hi all, I’m working on the RA4W1 evaluation kit. I’ve configured my device as central. I want to read the advertising name and advertising data of the other devices. I can not suitable to find any function for this purpose. Please give ...Read more

Hi all,

I’m working on the RA4W1 evaluation kit. I’ve configured my device as central. I want to read the advertising name and advertising data of the other devices. I can not suitable to find any function for this purpose.

Please give the solution to resolve the above issue.

Regards,

Ashish

 

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advertisingevaluationkitmcumicrocontrollerra4w1renesas
  1. Julian White

    Hello @ashish To read the advertising name and data of other devices, you will need to use the Bluetooth Low Energy (BLE) scanning feature of your RA4W1 evaluation kit. This feature allows your device to scan for nearby BLE devices and retrieve their advertising data. Thank You Jullian White

    Hello ashishgawade

    To read the advertising name and data of other devices, you will need to use the Bluetooth Low Energy (BLE) scanning feature of your RA4W1 evaluation kit. This feature allows your device to scan for nearby BLE devices and retrieve their advertising data.

    Thank You

    Jullian White

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Twinkle Garg
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Twinkle Garg
Asked: June 20, 2023In:
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Hi, I have a RA4M2 eval kit and am working on a product for that MCU. From what I can see the USB example code provided for this MCU uses FreeRTOS, with the USB send and admit running in its own ...Read more

Hi,

I have a RA4M2 eval kit and am working on a product for that MCU. From what I can see the USB example code provided for this MCU uses FreeRTOS, with the USB send and admit running in its own thread.

I believe my product doesn’t need an RTOS. Would it be possible to use the RA4M2 USB drivers without any RTOS, with the send and receive running in a circle in the main thread? Would there be any example code for this?

Thanks,

Vikas

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driversmcura4m2renesasrtosusb
  1. sachinsharma

    Hello, The Renesas RA4M2 microcontroller has built-in USB functionality and comes with a USB driver library that can be used to develop USB applications without an RTOS. Here are the general steps to use the RA4M2 USB drivers without an RTOS: Download and install the Renesas e2 studio IDE and the RARead more

    Hello,

    The Renesas RA4M2 microcontroller has built-in USB functionality and comes with a USB driver library that can be used to develop USB applications without an RTOS. Here are the general steps to use the RA4M2 USB drivers without an RTOS:

    • Download and install the Renesas e2 studio IDE and the RA4M2 USB driver library.
    • Create a new project in e2 studio for your RA4M2 microcontroller.
    • Include the necessary USB driver library headers in your project.
    • Configure the USB module on your RA4M2 microcontroller by setting the appropriate registers.
    • Call the USB driver initialization function to initialize the USB module.
    • Implement your USB application code, such as handling USB requests and transferring data to and from the USB device.
    • Build your project and download the firmware to your RA4M2 microcontroller.
    • Connect your RA4M2 microcontroller to a USB host device and test your application.

    Thank You
    Sachin Sharma

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Julian White
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Julian White
Asked: May 25, 2023In:
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Hi, I’m using RF7A6M2AF MCU. I’m working at the register level and don’t use Renesas libraries. I’m trying to set up the MCU so I could spark ADC sampling from GPT. I do have a GPT formerly working in the circle. I ...Read more

Hi,

I’m using RF7A6M2AF MCU. I’m working at the register level and don’t use Renesas libraries. I’m trying to set up the MCU so I could spark ADC sampling from GPT.

I do have a GPT formerly working in the circle. I did set ADTRAUEN to 1 in the GTINTAD register and GTADTRA to 2, so the ADC trigger event starts early on during the GPT up-count. To confirm that the ELC_EVENT_GPT1_AD_TRIG_A event actually happens I’ve configured an interrupt for it and it does get triggered.

The thing I must be missing is the configuration at the ADC level for the trigger. A single checkup from the software trigger is working rightly and I can see ELC_EVENT_ADC1_SCAN_END related interrupt being triggered but if I configure ADCSR register TRGE and EXTRG fields to enable synchronous trigger I can not get ADC to work. I was looking into the ADSTRGR register to set a trigger for the ADC, but I don’t see an option for the GPT.

What am I missing?

Kind regards.

Julian White

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adcadtrauengptmcumicrocontrollersrenesasrf7a6m2af
  1. nidhi singh

    Hello, Thanks for reaching out to Volt Tech Engineering Community. Do you have set the ELSRn to register? For example, ELSR8 register (for ADC unit 0)? You require to set this register with the right value from Table 19.3 according to your preferred GPT channel and event. Thank & Regards

    Hello,

    Thanks for reaching out to Volt Tech Engineering Community.

    Do you have set the ELSRn to register? For example, ELSR8 register (for ADC unit 0)?

    You require to set this register with the right value from Table 19.3 according to your preferred GPT channel and event.

    Thank & Regards

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nidhi singh
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nidhi singh
Asked: May 13, 2023In:
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Hello everyone. I’m trying to use a driver that uses spi with my RA6M3 board. But I ran into a problem that I had not encountered ahead. The NMI interrupt goes into an infinite loop and doesn’t live. I do ...Read more

Hello everyone. I’m trying to use a driver that uses spi with my RA6M3 board. But I ran into a problem that I had not encountered ahead. The NMI interrupt goes into an infinite loop and doesn’t live. I do not know much about NMI so I do not know what to do. The NMI pin on the RA6M3 board is P200. P200 isn’t enabled but never gets stuck in NMI masking function in the spi_transmit process. And it can not exit NMI_Handler.

Thank You

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mcumicrocontrollersmicroprocessorsnmip200ra6m3renesas
  1. Alex thomas

    Hello, What's the value of the NMISR register when the NMI handler is called? The value of the register gives some data about the cause of the NMI interrupt. Also at what point inside the 'spi_transmit' does the NMI occur? Regards Alex Thomas

    Hello,

    What’s the value of the NMISR register when the NMI handler is called?

    The value of the register gives some data about the cause of the NMI interrupt.

    Also at what point inside the ‘spi_transmit‘ does the NMI occur?

    Regards

    Alex Thomas

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vikas Nagpal
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vikas Nagpal
Asked: April 18, 2023In:
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Hello Forum, I am trying to collect and run the NetX_dhcpv4_client project from the r20an0585eu0127– ek- ra6m4 example projects.zip group of demo projects. I’ve what I suppose is a standard install of the FSP4.3.0 decline and toolchain. If I import the ...Read more

Hello Forum,

I am trying to collect and run the NetX_dhcpv4_client project from the r20an0585eu0127– ek- ra6m4 example projects.zip group of demo projects. I’ve what I suppose is a standard install of the FSP4.3.0 decline and toolchain. If I import the below project from the zip file it looks like it imports clean but will not compile. I’m getting the error saying the toolchain configured for the project isn’t presently available. Where have I gone wrong with this project importation? I would have allowed all these example projects to be set up to run on the default toolchain.

Thank you for the help!!

Vikas

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mcumicrocontrollersmicroprocessorsr20an0585eu0127renesastoolchain
  1. Julian White
    This answer was edited.

    Hello vikas, Open the project properties, C/C Build-> Settings-> Toolchain tab Unselect the Use integrated toolchain account checkbox, click Apply, elect the Use integrated toolchain account back, this will modify the current toolchain to the toolchain available on your system. Click Apply andRead more

    Hello vikas,

    Open the project properties, C/C Build-> Settings-> Toolchain tab

    Unselect the Use integrated toolchain account checkbox, click Apply, elect the Use integrated toolchain account back, this will modify the current toolchain to the toolchain available on your system. Click Apply and Close, done!

    Thank you,

    Julian White

     

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ashishgawade
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ashishgawade
Asked: April 7, 2023In:
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Hello Forum, It’s been 5 years since I’ve done important firmware and have forgotten a lot of how this device works. I am trying to learn a simple netx application running. In the older Community ssp, there use to be a ...Read more

Hello Forum,

It’s been 5 years since I’ve done important firmware and have forgotten a lot of how this device works. I am trying to learn a simple netx application running. In the older Community ssp, there use to be a tab like properties or something that would allow me to change things like the thread name and set the heap and stack sizes. Where is that now hidden? I allowed it use to be down in the lower section there next to the problems tab.

Thank you for the help!

Ashish Gawade

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heapmcumicrocontrollersmicroprocessorsnetxrenesasSTACK
  1. vikas Nagpal

    Hello Ashish, You can change the setting in the "Properties" window. It can be opened by selecting the "Window" - "Show View" - "Properties" menu. Kind regards, Vikas If this response, or one provided by another user, answers your question, please verify the answer. Thank you!

    Hello Ashish,

    You can change the setting in the “Properties” window. It can be opened by selecting the “Window” – “Show View” – “Properties” menu.

    Kind regards,

    Vikas

    If this response, or one provided by another user, answers your question, please verify the answer. Thank you!

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