1. Bruno Malbusca

    SPI on SAMD21G18 not working

    Hello, I've been attempting to use SERCOM2 SPI Master on the SAMD21G18J but have been unsuccessful. I tried the configurations with SERCOM0 and SERCOM4, and they both worked. The most intriguing behavior is that when I initialize the SERCOM2 SPI, all of the other I/O pins stop working as well...
  2. ashokraj

    Selection of ADC. What is the meaning of VA( analog power supply)?

    Hi, I am trying to find an ADC with the following specifications. 1. Power supply to it has to be less than 3V. 2. sampling frequency is 500ksps. 3. 16 bit. 4. My input signal is varying from 0 to 2V. When I am trying to find an ADC I came across the following datasheet: 1.Datasheet-1 In it...
  3. O

    PIC18F47Q10 SPI Trouble SOLVED

    Hello, Can anyone help me understand why my firmware hangs here? I may have other W5500 issues but I know, at least at this moment, I cannot communicate with the chip over SPI. For some reason, SSP1IF never goes high. Also, I tried the same code using SPI2 and still have the same behavior. The...
  4. M

    How to bypass BIOS password on an SPI EEPROM

    Hey, first of all I would like to say that basically all of what I'm talking about is far far away from my comfort zone and everything I know is from a 30 minute research on this topic. So I am trying to reset BIOS password on an old ASUS X51L laptop because everytime I turn it on I first have...
  5. T

    Diode usage in SPI modules

    Hi All, Hoping that someone can put me out of my misery. I have been searching the internet for the past 5days for an answer to this question and feel like I am starting to lose my mind. Can anyone explain why the attached schematic has a 1N4148 on each of the SDI_5V, SCLK_5V and CS_5V lines...
  6. dignificent

    How to measure continuity of a single QFN without powering entire board?

    QFN Device in-question * https://www.digikey.com/en/products/detail/MCP2515T-I-ML/MCP2515T-I-MLCT-ND/2601600?utm_campaign=allaboutcircuits&utm_medium=aggregator&curr=usd&utm_source=octopart Data-Read-Outs I want to test for seen on page 67 *...
  7. M

    How measure(Voltage reference points) SPI flash Data Output parameters (tCLQV,tCLQX)

    Hi, we are using MT25QU256ABA8ESF SPI flash as boot flash. It operates in QPI mode @ 120Mhz. As part of DVT we are measuring timing parameters for both Data Input & Data Output at Flash pins (No option to measure at the controller pins). Data Input parameters tDVCH(setup), tCHDX(hold) are...
  8. W

    Problem: Raspberry Pi to NXP MPC5744p over SPI

    Hello, I am currently trying to get SPI data transfer between the MPC5744p and a Raspberry Pi 4 to work. I'm using the SPIdev python toolkit to send the value 26 over to the MPC, using the attached SPItest.py script. To receive this, i've modified the code of the SPI_MPC5744P example to only...
  9. danwastheman

    How to use an STM32 to flash a bios chip with a bin or hex file?

    My old PC motherboard's bios chips were corrupted and it's an old 1155 socket so there were no available replacements. I believe I have the necessary tools to attempt to erase and reprogram the chip, but I'm not sure what I need to do. There isn't much STM32 resources online to guide me...
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