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ashishgawade
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ashishgawade
Asked: November 24, 2022In:
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Hello, I am in the process of learning my way around microcontrollers and designing an IOT device that will include a thumb keyboard. The font used will be an older one used on BBS systems and I envision holding control keys ...Read more

Hello,

I am in the process of learning my way around microcontrollers and designing an IOT device that will include a thumb keyboard. The font used will be an older one used on BBS systems and I envision holding control keys to utilize the upper area of the fonts for drawing.
As similar, I am aware that the esp32 lacks the pins demanded to program a keyboard so I am thinking a keyboard controller chip would be needed. Does anyone have a recommendation on what I should use?

I looked up many but they feel to be more fit for a laptop and apparently preprogrammed.

Thanks & Regards

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controllerdeviceesp32iotkeyboardmicrocontrollers
Alex thomas
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Alex thomas
Asked: November 16, 2022In:
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Dears I would like to port an application that was developed on KIT_XMC14_BOOT_001 applying XMC1404- Q064x0200 to XMC1302- T038x0200. I tried to produce a custom BSP, and follow all available proofs for Modus Toolbox. But I’ve the following caseCould you ...Read more

Dears

I would like to port an application that was developed on KIT_XMC14_BOOT_001 applying XMC1404- Q064x0200 to XMC1302- T038x0200.

I tried to produce a custom BSP, and follow all available proofs for Modus Toolbox.

But I’ve the following case

Could you help me?

Regards

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bspdeviceInfineonmicrocontrollertoolboxxmc
  1. nidhi singh

    Hello, You can click the "Reset" button and then have a try. Regards, Nidhi Singh

    Hello, You can click the “Reset” button and then have a try.


    Regards,

    Nidhi Singh

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nidhi singh
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nidhi singh
Asked: November 1, 2022In:
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Hii,  I’m designing a dev board based on ESP32- C3 (ESP32- C3FN4) and I’m not sure if I’m good with connections for download boot. Is it enough to put tactile switched on GPIO2 and GPIO8 towards VCC and pull down ...Read more

Hii,  I’m designing a dev board based on ESP32- C3 (ESP32- C3FN4) and I’m not sure if I’m good with connections for download boot.
Is it enough to put tactile switched on GPIO2 and GPIO8 towards VCC and pull down on GPIO9?

Also, should I include a connector in case the device needs to be flashed?

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bootdeviceesp32ESP32-C3gpio
  1. Alex thomas

    Hello, You need to start your esp32 with the Low position on the Boot pin to begin the bootloader. In normal mode, u can hold a HIGH position on this pin by pullup him up with 10k, for example. Generally, you can use 2 buttons for switching modes, 1- to connect the boot pin to GND, 2- to pull the RSRead more

    Hello, You need to start your esp32 with the Low position on the Boot pin to begin the bootloader. In normal mode, u can hold a HIGH position on this pin by pullup him up with 10k, for example. Generally, you can use 2 buttons for switching modes, 1- to connect the boot pin to GND, 2- to pull the RST( EN) pin to GND- for resuming esp32 (you need to pull up it too). Also, you can use special schemes which will do it automatically.

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Anonymous
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Anonymous
Asked: October 29, 2022In:
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We want to develop a USB- C charger and we need to check the battery charge percentage of the device connected to the USB- C charger. The connected to de USB- C device can be a Smartphone, Tablet, or PC. In ...Read more

We want to develop a USB- C charger and we need to check the battery charge percentage of the device connected to the USB- C charger. The connected to de USB- C device can be a Smartphone, Tablet, or PC.

In our charger, we’re going to integrate a processor and we need to read the battery percentage of the device that’s being charged

Is it possible to read the battery percentage of the device connected by USB- C? Any ST reference can do this job?

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batterydevicetcppusbusb-cusb-pd
  1. nidhi singh

    Hello, Battery_status message can give the SOC of the sink. The info will be available only on the PD3 sink( designed with version> = PD3.0 v1.2). PD2 devices do not have similar communication. That information is handled in the dpm_user part and needs to be updated by the user/ customer. Best reRead more

    Hello,

    Battery_status message can give the SOC of the sink.
    The info will be available only on the PD3 sink( designed with version> = PD3.0 v1.2).

    PD2 devices do not have similar communication.
    That information is handled in the dpm_user part and needs to be updated by the user/ customer.

    Best regards

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ashishgawade
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ashishgawade
Asked: September 28, 2022In:
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What I see is that the eval board output the power thru the terminal block, I’m curious how it’ll auto-select the voltage demanded. that’s no additional signal or feedback connected to the eval board. The first device can auto-select to output ...Read more

What I see is that the eval board output the power thru the terminal block, I’m curious how it’ll auto-select the voltage demanded. that’s no additional signal or feedback connected to the eval board.

The first device can auto-select to output five 5V also follow Bluetooth speaker devices, it auto-generates 15V. Let’s say I want to connect to an Uno board. which is DC 7- 15V, how will the eval output be?

I am using 20V source power)

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dc 7- 15vdevicepowerscs001v1voltage
  1. Alex thomas

    EVAL- SCS001V1 is grounded on the STUSB4500, which can store three PDO profiles( power data objects) in its NVM and informs the connected power force( source) of the voltage and current to be supplied. Since the EVAL- SCS001V1 has no information about the needed voltages and currents of the connecteRead more

    EVAL- SCS001V1 is grounded on the STUSB4500, which can store three PDO profiles( power data objects) in its NVM and informs the connected power force( source) of the voltage and current to be supplied.

    Since the EVAL- SCS001V1 has no information about the needed voltages and currents of the connected loads( sinks,e.g. your UNO), these values have to be stored in the NVM of the included STUSB4500. Programming can be done. g. with the GUI STSW- STUSB002.
    As soon as the EVAL- SCS001V1 with your UNO board is connected to the USB- C power force, the set power can be requested.

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geek
  • 1
geek
Asked: August 20, 2022In:
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Hot- Insertion: Is it guaranteed “Safe” to Remove or fit a module containing the PI7C7300D device from a powered up” live” system?

Hot- Insertion: Is it guaranteed “Safe” to Remove or fit a module containing the PI7C7300D device from a powered up” live” system?

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devicediodespi7c7300drectifiers
  1. Techworld

    The PI7C7300D is" hot- exchange friendly", which basically means it can affiliate to a hot- exchange power regulator. But by itself can not withstand Vcc = 0V and live signals at the I/ O pins-- in this mode, current will flow through our ground. Thus, if ever there's a possibility of this passing,Read more

    The PI7C7300D is” hot- exchange friendly”, which basically means it can affiliate to a hot- exchange power regulator. But by itself can not withstand Vcc = 0V and live signals at the I/ O pins– in this mode, current will flow through our ground. Thus, if ever there’s a possibility of this passing, we require a hot- exchange power regulator and switches for isolation. However, also the less expensive or PI3C32X245 switches are applicable for the signal switches. Most of our guests use this switch in their operations.

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