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volt.tech Latest Questions

Arjun B
  • 1
Arjun B
Asked: February 4, 2022In: Microcontroller

Change of SPI Baud Rate in Renesas RL78

  • 1

How to change SPI Baud Rate in Renesas RL78 ? What are the steps to change SPI Baud Rate in Renesas RL78 series.

renesas
  • 2 Answers
  • 0 Followers
Answer
  1. Best Answer
    Sandeep Kondhalkar
    Added an answer on May 13, 2022 at 12:42 pm

    The transfer clock frequency for 3-wire serial I communication can be calculated by the following expressions.(1) For Master(Transfer clock frequency) = {Operation clock (fMCK) frequency of target channel} ÷ (SDRmn[15:9] + 1) ÷ 2 [Hz](2) For Slave(Transfer clock frequency) = {Frequency of serial cloRead more

    The transfer clock frequency for 3-wire serial I communication can be calculated by the following expressions.
    (1) For Master
    (Transfer clock frequency) = {Operation clock (fMCK) frequency of target channel} ÷ (SDRmn[15:9] + 1) ÷ 2 [Hz]
    (2) For Slave
    (Transfer clock frequency) = {Frequency of serial clock (fSCK) supplied by master}Note [Hz]
    Note :The permissible maximum transfer clock frequency is fMCK/6.
    Remark :The value of SDRmn[15:9] is the value of bits 15 to 9 of serial data register (SDRmn) (0000000B to 1111111B) and therefore is 0 to 127. The operation clock (fMCK) is determined by serial clock select register m (SPSm) and bit 15 (CKSmn) of serial mode register mn (SMRmn).

     

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Techworld
  • 1
Techworld
Asked: February 15, 2022In: Microcontroller

Implementation of USB and SCI Boot mode for RA MCU series

  • 1

In the RA MCU series by Renesas, what is the procedure for using USB and SCI Boot mode?

ra mcu seriesrenesassci bootusb
  • 3 Answers
  • 0 Followers
Answer
  1. Avs Mohan
    Added an answer on February 21, 2022 at 5:28 pm

    Hello, Please refer to the link, video done on SCI Boot for EK-RA4M2 SCI Boot mode Hope this helps you.

    Hello,

    Please refer to the link, video done on SCI Boot for EK-RA4M2

    SCI Boot mode

    Hope this helps you.

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Arjun B
  • 1
Arjun B
Asked: February 15, 2022In: Microcontroller

Renesas RA6M4 MCU interfacing with touchscreen.

  • 1

How can I interface touchscreen with Renesas RA6M4 MCU.

renesas
  • 1 Answer
  • 0 Followers
Answer
  1. vsharma
    Added an answer on August 1, 2022 at 5:08 pm

    The CapTouch driver in the FSP is for the Capacitive Touch Sensing Unit peripheral (CTSU) built into the RA MCU devices. You will need to build the driver for the the external touch screen chip using the basic drivers the FSP provides (e.g. I2C, SPI external IRQ).

    The CapTouch driver in the FSP is for the Capacitive Touch Sensing Unit peripheral (CTSU) built into the RA MCU devices.

    You will need to build the driver for the the external touch screen chip using the basic drivers the FSP provides (e.g. I2C, SPI external IRQ).

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Nick James
  • 1
Nick James
Asked: February 15, 2022In: Microcontroller

RAM initialization in Renesas RH850 F1x

  • 1
RAM initialization in Renesas RH850 F1x

What is the correct address to be set in Renesas RH850 F1x in Boot.asm GLOBAL_RAM_ADDR START address and GLOBAL_RAM_END address is set to 0 by default ?

cs+ ccram initializationrh850 f1km-s1
  • 1 Answer
  • 0 Followers
Answer
  1. Sandeep Kondhalkar
    Added an answer on February 15, 2022 at 1:15 pm

    ;----------------------------------------------------------------------------- ;hdwinit ; Specify RAM addresses suitable to your system if needed. ;----------------------------------------------------------------------------- LOCAL_RAM_ADDR .set 0xFEBE0000 ; for MCU : R7f701684 LOCAL_RAM_END .set 0xRead more

    ;—————————————————————————–
    ;hdwinit
    ; Specify RAM addresses suitable to your system if needed.
    ;—————————————————————————–
    LOCAL_RAM_ADDR .set 0xFEBE0000 ; for MCU : R7f701684
    LOCAL_RAM_END .set 0xFEBF7FFF ; for MCU : R7f701684
    RETENTION_RAM_ADDR .set 0xFEBF8000 ; for MCU : R7f701684/R7f701690 ; 0xFEBE0000
    RETENTION_RAM_END .set 0xFEBFFFFF ; for MCU : R7f701684/R7f701690 ; 0xFEBF7FFF

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priyanka
  • 1
priyanka
Asked: February 16, 2022In: Microcontroller

Use of EPROM emulation library in Renesas RL78/D1

  • 1

How to use EPROM emulation library in Renesas RL78/D1 in CC compiler. I have integrated the type01 library, but was unable to use the function . Please share the application implementation code.

eprom emulation libraryrenesasrl-ccrl78/d1
  • 0 Answers
  • 0 Followers
Answer
Sravani
  • 1
Sravani
Asked: February 16, 2022In: Microcontroller

Renesas RL78 Flashing issue in CS+CC

  • 1

Download failed[Direct Error Cause]No response from CPU. Please confirm the signal of CLOCK or RESET,WAIT and so on. Seeing(E1200416) Flashing error in Renesas CS+ IDE when all connections are correct.

cccs+
  • 1 Answer
  • 0 Followers
Answer
  1. subbu
    Added an answer on February 16, 2022 at 5:11 pm

    Un-install Renesas Emulator E1 or E2 or E20 driver and install again issue will be solved

    Un-install Renesas Emulator E1 or E2 or E20 driver and install again issue will be solved

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sravanisandya
  • 1
sravanisandya
Asked: February 21, 2022In: Microcontroller

Renesas RL78 Data Flash Memory Watch

  • 1

How to Watch Renesas RL78 Data Flash Memory in Watch Window?

cc/cacxcs+rl78
  • 1 Answer
  • 0 Followers
Answer
  1. subbu
    Added an answer on February 21, 2022 at 11:51 am

    In Renesas CS+ IDE , Goto view ->Memory->Memory1 In that DataFlash Address mentioned in Datasheet for Ex.RL78F14, F1000 DataFlash Starting Address

    In Renesas CS+ IDE , Goto view ->Memory->Memory1 In that DataFlash Address mentioned in Datasheet for Ex.RL78F14, F1000 DataFlash Starting Address

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sravanisandya
  • 1
sravanisandya
Asked: February 21, 2022In: Microcontroller

Renesas RH850 Flashing issue in CS+IDE

  • 1

In Renesas RH850 in CS+ IDE , DCU cannot be accessed. Why is it showing Error (E1203184) while Flashing from E1 emulator even when all connections are correct.

cccs+rh850
  • 1 Answer
  • 0 Followers
Answer
  1. subbu
    Added an answer on February 21, 2022 at 12:12 pm

    Erase Microcontroller Flash area from Renesas flash programmer software and again download software from CS+ IDE issue is solved.

    Erase Microcontroller Flash area from Renesas flash programmer software and again download software from CS+ IDE issue is solved.

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Techworld
  • 1
Techworld
Asked: February 21, 2022In: Microcontroller

Settings needed in Renesas RA2L1, UART to get 1Mbps speed

  • 1

What are the settings required to achieve 1Mbps speed while working on Renesas RAL21. I am working on Renesas RA2L1, 48 pin controller part#R7FA2L1A93CFL with FSP version 3.5.0. I am unable to achieve 1Mbps speed.

e2studio_fspv3.5.0ra2l1uart
  • 1 Answer
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Answer
  1. Avs Mohan
    Added an answer on February 21, 2022 at 2:41 pm

    I have attached workspace for UART done on RA2L1 and FSP v3.5.0 to set BR- 1000000. Please make sure your USB to TTL convertor supported with 1MBps speed. You need to see Baud rate modulation is enabled and set the BR to 1000000, refer below snap Please go through the HW manual of RA2L1 to check theRead more

    I have attached workspace for UART done on RA2L1 and FSP v3.5.0 to set BR- 1000000. Please make sure your USB to TTL convertor supported with 1MBps speed.

    You need to see Baud rate modulation is enabled and set the BR to 1000000, refer below snap

    Please go through the HW manual of RA2L1 to check the UART error rate calculation.

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    Attachment

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sravanisandya
  • 1
sravanisandya
Asked: February 21, 2022In: Microcontroller

Renesas RH850 CS+ IDE Program Execution Issue

  • 1

In Renesas RH850 CS+ IDE , program runs when we put break point and programs do not run when break point is removed.

cccs+rh850
  • 1 Answer
  • 0 Followers
Answer
  1. subbu
    Added an answer on February 21, 2022 at 12:34 pm

    In CS+ CC IDE for RH850,when debug tool is connected click on Debug tool settings then click on Flash Options Settings ,OPBT0 as DA20FDCF and OPBT1 as FFFFFDFF for LPD-1 and OPBT0 as BA20FDCF and OPBT1 as FFFFFDFF for LPD-4 and issue is solved program executes continuously .

    In CS+ CC IDE for RH850,when debug tool is connected click on Debug tool settings then click on Flash Options Settings ,OPBT0 as DA20FDCF and OPBT1 as FFFFFDFF for LPD-1 and OPBT0 as BA20FDCF and OPBT1 as FFFFFDFF for LPD-4 and issue is solved program executes continuously .

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