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volt.tech Latest Questions

Alex thomas
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Alex thomas
Asked: June 5, 2023In: Microcontroller

R_SPI_Write Read is non-blocking?

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Hi, I need to read SPI registers from the assignment as well as ISR. So setting a flag isn’t an option and I can’t take semaphores from ISR. Is there a way to block the R_SPI_WriteRead function? Thank You Alex Thomas

assignmentRegisterssemaphoresspiwriteread
  • 1 Answer
  • 0 Followers
Answer
  1. Julian White
    Added an answer on June 7, 2023 at 9:52 am

    Hello Alex, By default, the perpetration of the drivers in FSP is nonblocking. This is happening to improve the effectiveness of your code. That is the reason callback functions are added in order to be sure that the operation you want to perform is completed. Let's say for example that you want toRead more

    Hello Alex,

    By default, the perpetration of the drivers in FSP is nonblocking. This is happening to improve the effectiveness of your code. That is the reason callback functions are added in order to be sure that the operation you want to perform is completed.

    Let’s say for example that you want to perform a UART read, and you call R_SCI_UART_Read() API, this API’ll return immediately and your code will enter the callback function you created in order to check if data is ready and if the read operation is actually completed.

    In case you would like to make blocking the operation of R_SPI_WriteRead() maybe you should consider adding a wait after the call of the API in your code by using R_BSP_SoftwareDelay(), if this is what you’re meaning.

    By making tests you can find the proper delay you need to set.

    Thank you!

    Best Regards,
    Julian White

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vikas Nagpal
  • 0
vikas Nagpal
Asked: June 1, 2023In: Power Management

How to Enable Watchdog – TC 397 (automatic password sequencing)?

  • 0

Hello Volt Tech Team, Can anyone let me know how to enable and implement Automatic password sequencing which follows a pseudo-random sequence based on a 14-bit Fibonacci LFSR? Thank You

fibonacciInfineonlfsrpasswordsequencingtc397watchdog
  • 1 Answer
  • 0 Followers
Answer
  1. ashishgawade
    Added an answer on June 2, 2023 at 11:23 am

    Hi, For enabling the automatic password sequencing you can write 1 to bit PAR of WDTCPUyCON1 (or WDTSCON1 for safety watchdog) Register. For example, if you want to enable automatic password sequencing for CPU0 you can do it like this (IfxScuWdt_getCpuWatchdogPassword()); = 1; (IfxScuWdt_getCpuWatchRead more

    Hi,

    For enabling the automatic password sequencing you can write 1 to bit PAR of WDTCPUyCON1 (or WDTSCON1 for safety watchdog) Register. For example, if you want to enable automatic password sequencing for CPU0 you can do it like this

    (IfxScuWdt_getCpuWatchdogPassword());
    = 1;
    (IfxScuWdt_getCpuWatchdogPassword());

    After enabling this point the password changes automatically after each password check and follows a pseudorandom sequence based upon a 14-bit Fibonacci LFSR with characteristic polynomial x14 x13 x12 x2 1 as you said. So each time you have to calculate the new password grounded on this sequence.

    Best Regards,

    Ashish

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vikas Nagpal
  • 0
vikas Nagpal
Asked: May 30, 2023In: LEDs & Optoelectronics

How to fix this LED7708 flickering/flashing issue?

  • 0

Hi We observe sudden changes and flickering especially at low position luminosity. attached oscilloscopecapture_1 is taken at one of the green LED channels. During the dimming cycle, the ghost pattern causes momentary flashes in LED brightness. again oscilloscopecapture_2.PNG and oscilloscopecapture_3.PNG are taken at ...Read more

flashingflickeringled7708
  • 1 Answer
  • 0 Followers
Answer
  1. ashishgawade
    Added an answer on May 31, 2023 at 11:41 am

    Hello, C19 (parallel to Riseth resistor) marked as NC in the evaluation board schematics, was populated in our design. Removing this cap. solved the problem. Thank You

    Hello,

    C19 (parallel to Riseth resistor) marked as NC in the evaluation board schematics, was populated in our design. Removing this cap. solved the problem. Thank You

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nidhi singh
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nidhi singh
Asked: May 27, 2023In: Wireless Connectivity

How to Overcome Loss of 3.3V Load Regulation?

  • 0

Hello All, I’ve designed a very smooth and low ripple 5V force for my board. This gets coupled through an LDO 3.3 V controller to feed the ESP32 (same as most boards out there). When the ESP32 transmits WiFi, I see ...Read more

controlleresp32ldoregulationtransmitsvoltagewifi
  • 1 Answer
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Answer
  1. Alex thomas
    Added an answer on May 29, 2023 at 10:15 am

    It will not. Note that the 3.3 V LDO doesn't" regulate" its input voltage. The drop you see on the 5V side is the result of the ESP drawing more current during TX and the 5V supply/ rail failing to a) give that amount of current while maintaining 5V, or b) react to the change in current quickly enouRead more

    It will not. Note that the 3.3 V LDO doesn’t” regulate” its input voltage. The drop you see on the 5V side is the result of the ESP drawing more current during TX and the 5V supply/ rail failing to a) give that amount of current while maintaining 5V, or b) react to the change in current quickly enough. There is nothing the LDO can do to change the current the load draws from the force.

    So some options are
    a) beef up the power supply
    b) (further) reduce the impedance of the power supply (i.e. further caps), and make sure supply and ground/ return lines and connections have low resistance
    c) consider decoupling only the sensitive circuitry (ADC,.) from the 5V supply, which may be easier to achieve (less current) than stabilizing the whole 5V rail.

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Julian White
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Julian White
Asked: May 25, 2023In: Microcontroller

How to Set Trigger ADC from GPT?

  • 0

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

adcadtrauengptmcumicrocontrollersrenesasrf7a6m2af
  • 1 Answer
  • 1 Follower
Answer
  1. nidhi singh
    Added an answer on May 26, 2023 at 10:30 am

    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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ashishgawade
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ashishgawade
Asked: May 22, 2023In: Power Management

Class D Amplifier MOSFET from FDP51N25 TO IRF4332

  • 0

Dear All, We’ve made a class d system, based on IRS2092 CHIPSET. It’s an amp of 2000W system and we use MOSFET of Onsemi FDP51N25. We’re looking to change this to Infineon MOSFET with part number IRFB4332. Please suggest can it’s one to one ...Read more

amplifierchipsetfdp51n25Infineonirf4332mosfetonsemi
  • 1 Answer
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Answer
  1. vikas Nagpal
    Added an answer on May 24, 2023 at 10:16 am

    Hello, The IRFB4332 is a suitable replacement for the FDP51N25 MOSFET in your Class D amplifier system. Both MOSFETs are N- channel devices and have such voltage conditions, with a minimum VDS of 250V. The IRFB4332 has a just lower RDS (ON) value than the FDP51N25, which means it'll dissipate less pRead more

    Hello,

    The IRFB4332 is a suitable replacement for the FDP51N25 MOSFET in your Class D amplifier system. Both MOSFETs are N- channel devices and have such voltage conditions, with a minimum VDS of 250V.

    The IRFB4332 has a just lower RDS (ON) value than the FDP51N25, which means it’ll dissipate less power when conducting. This can potentially result in better effectiveness for your system.

    However, it’s important to note that the IRFB4332 has an advanced pulsed drain current (Id) level of 60A compared to the 51A level of the FDP51N25. This means that if your system operates at very high current levels, you may need to ensure that the IRFB4332 can manage the current without breaking its maximum levels.

    Overall, make sure to double-check the specifications and ensure that the MOSFET can manage the demands of your specific application.

    Thank You

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Alex thomas
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Alex thomas
Asked: May 18, 2023In: MEMS & Sensors

How do I connect STEVAL- MKI234KA evaluation kit with STEVAL- MKI109V3 motherboard?

  • 0

Hello Team, I am testing to apply the STEVAL- MKI234KA evaluation kit with the recommended STEVAL- MKI109V3 motherboard. Upon starting the unico software I get an error saying the board doesn’t react, and the device may not be supported. How do ...Read more

evaluationkitmki109v3mki234kamotherboardsteval
  • 1 Answer
  • 0 Followers
Answer
  1. Julian White
    Added an answer on May 19, 2023 at 10:19 am

    Hi @Alex did you upload the STEVAL- MKI109V3 the latest firmware version? However, you can discover it in the FIRMWARE ProfiMEMSTool board folder, If not. It should be version v.3.48.3. Thank You Julian White

    Hi Alex thomas

    did you upload the STEVAL- MKI109V3 the latest firmware version?

    However, you can discover it in the FIRMWARE ProfiMEMSTool board folder, If not. It should be version v.3.48.3.

    Thank You

    Julian White

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vikas Nagpal
  • 0
vikas Nagpal
Asked: May 16, 2023In: Wireless Connectivity

Battery Powered Issue In MCP130-315HI/TO?

  • 0

Hello, I’m running my TTGO ESP32 using a 163403.7 v 800mah battery. When measuring the battery with the device awake and the screen on the voltage is for example 3.0 v and when I put the device into deep sleep the ...Read more

315hibatteryesp32mcp130poweredttgo
  • 1 Answer
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Answer
  1. ashishgawade
    Added an answer on May 17, 2023 at 11:18 am

    Hello, A battery with lower ISR/advanced current capability might mitigate the issue because the drop/ rise of the voltage would be lower, ideally staying below the hysteresis of the battery covering chip, so that once the turn-off threshold is reached the voltage will not rise above the turn- on thRead more

    Hello,

    A battery with lower ISR/advanced current capability might mitigate the issue because the drop/ rise of the voltage would be lower, ideally staying below the hysteresis of the battery covering chip, so that once the turn-off threshold is reached the voltage will not rise above the turn- on the threshold by itself again.

    A beefy capacitor in parallel with the battery will also reduce the battery’s apparent impedance, reducing the amplitude of voltage drops caused by spikes in current consumption.

    Thank You

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nidhi singh
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nidhi singh
Asked: May 13, 2023In: Microcontroller

RA6M3 SPI_Transmit NMI_HANDLER?

  • 0

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

mcumicrocontrollersmicroprocessorsnmip200ra6m3renesas
  • 1 Answer
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Answer
  1. Alex thomas
    Added an answer on May 15, 2023 at 10:01 am

    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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Julian White
  • 0
Julian White
Asked: May 10, 2023In: Microcontroller

Regarding the connection of some electronic components on MCU 7?

  • 0

Hello, I could not discover the position of the electronic components in the blue circle in the schematic diagram in the AN599 Radar Baseboard MCU7- XENSIV ™ 60 GHz radar system platform file. What should I do to understand who these ...Read more

an599baseboardcomponentselectronicmcu7radar
  • 1 Answer
  • 0 Followers
Answer
  1. nidhi singh
    Added an answer on May 12, 2023 at 10:37 am

    Hi @Julian You can get an overview of the Radar Baseboard MCU7 schematics, and Altium design to have further insight into these components' connection. You need only to download the Radar Development Kit and browse the Hardware section. Cheers, Nidhi

    Hi Julian White

    You can get an overview of the Radar Baseboard MCU7 schematics, and Altium design to have further insight into these components’ connection. You need only to download the Radar Development Kit and browse the Hardware section.

    Cheers,

    Nidhi

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  • Julian White
    Julian White added an answer Hello Alex, By default, the perpetration of the drivers in… June 7, 2023 at 9:52 am
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    ashishgawade added an answer Hi, For enabling the automatic password sequencing you can write… June 2, 2023 at 11:23 am
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    ashishgawade added an answer Hello, C19 (parallel to Riseth resistor) marked as NC in… May 31, 2023 at 11:41 am
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    Alex thomas added an answer It will not. Note that the 3.3 V LDO doesn't"… May 29, 2023 at 10:15 am
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