spi

My slave MCU is STM32G0B1 and for master Im going to use SOM which has 3 SPI interface.

Hi to all, I wrote a code for read a 25LC1024 EEPROM (Datasheet). I use this code: -- THIS IS THE VHDL CODE FOR READ 25LC1024 EEPROM. -- CLAUDIO LA ROSA LIBRARY ieee; USE ieee.std_logic_1164.all; USE ieee.std_logic_arith.all; USE ieee.std_logic_unsigned.all; ENTITY EEPROM25LC1024 IS PORT(...

I'm writing code to read from BME280 sensor through SPI interface, I was reading datasheet and I was not able to understand some points. Datasheet says that by default sensor will be in sleep mode, what I understand to trigger new measurement we need to send data 0xF4 register address...

I'm going to write software SPI and I2C for PIC 8 bit MCU where I need to write command and read sensor data. I want to know what is the best practice to write such library. As we can use delay statement for clock high and low state but its not a good practice (sounds to me) because delay...

Hi, On my board I am using SPI slave devices in the following configuration. when every there is an spi communication happening between controller and slave1, everything is good. whereas, during the communication between the controller and slave2 SPI_CLK line is dipping from 2.4 to...

hi there, Iv'e salvaged a 7 segment display and i comes with an ht1668 driver ic with half duplex spi for communication, i was reading the datasheet and understood the communication side, but couldn't understand how and where data should be written to the driver, the datasheet doesnt provide...

Hi there, I'm looking for help with a FAT filesystem project. I have a special made measuring device with its own on board ARM MCU and RAM memory. Its is essentially a device that measures impedance through a tungsten filament as that filament is drilled at high RPM through a non conductive...

Hi Guys, I am using MC3635 Evaluation Board(EV3635B). There is no problem about SPI connection and i can read X,Y,Z movement via SPI. But i can not use interrupt pin as output. I want that let interrupt pin of the accelerometer give me HIGH when there is a tapping or movement and let me turn...

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...

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...

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...

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...

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...

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 *...

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...

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...

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...