Interface and connectivity ICs

Hello, i am really new to pcb design, in fact this is the first time i done it. the problem i get is, where to do i connect the BOOT0 pin? i know if you connect it to VDD then it will boot from the system memory. if i connect it to gnd then it will boot from flash. it just i don't understand which one should i use. btw i am designing this board for a model rocket onboard computer. beacuse the last time i make it, i use multiple module and connect it with jumper cable. and it took to many volume, and i think should weigth more than a dedicated pcb. also if you can, can you also tell me what should i do after i finish the board (or maybe give a link to a document or video explaining it) and maybe review my schematic. i don't reallyhave confidence in my design, because i learn everything by myself and did it alone. thank you in advance

I am programming stm32411CeU Blackpill- i want to make connection between the Stm32 and Pc Via RS485 ..i wrote this simple code like in the photo..but i have problem with the output .. i get this weird characters like in the photo i tried different numbers and characters but i still get these weird characters (all Settings like Baudrate  are correct).. can anyone help me please .. after that i want to build up Modbus connection .thank you in advance        كل التفاعلات:١١ 

Hi, I'm new with this development board.My target is to use the S2-LP DK Application to configure the board to send data from a GPIO.Do I have to put my data on GPIO_0 and the clock signal to GPIO_1?Why is the clock signal needed?In this way it is possible to change also the modulation? For example I want to send my packet on OOK mode or FSK mode. Thanks

Where can I get the detailed technical manual of STSAFE-VJ100-CCC, such as the definition of chip pins?

Hi,I'm searching for UHF RFID reader IC (860-960 MHz). I found the one and only solution as "ST25RU3993". But it is NRND. So, what can I use for my new design. And is there any cheaper solution? This IC is very costly. If I ignore the cost as of now, please suggest me any other solution which is active.Thanks....

Hello thereI have a custom board based on STEVAL-IDB011V2 EVM. Is the same schematic but I have a problem with this. Apparently it boots but not run... When I flash "Hello World" example I have some issue that I can't check why.... The expected message does not is sent complete. So I have this output:In this test, I reset the board sometimes. Some times it shows "Applicat", "Applicati", (Probably bootloader output?) Some times it shows truncated "Hello World". I checked voltage levels by https://www.st.com/resource/en/application_note/an5503-bringing-up-the-bluenrglp-bluenrglps-devices-stmicroelectronics.pdf application note (bringing up the bluenrglp devices).I tried the Power Supply test (flashing DTM Firmware - UART without update) and VDDA thats we expect 1.2V, I measured 0V. The Core voltage (VCAP) I measured 1.2V as expected.I also tried flash other firmware examples without success.Can someone help me?

Is there BLE_SensorDemo_BlueMSapp STM32CubeIDE project for STEVAL-IDB012V1?

hello. I am testing the X-NUCLEO-S2915A1 board. The board has been confirmed to be manufactured for use in the 915Mhz band.When transmitting frequencies in the 940Mhz to 950Mhz band through the board, inefficient frequencies occur above 1Ghz.You must change the board's Tx Filter to S2-LP and proceed with the test. I checked the filter section in two places in the datasheet. Can you improve it by applying the following low pass filter to the blue part?   I also confirmed that the amplifier supports up to 930Mhz, but I would like to use it as is if there are no problems.

Hello,We are using S2-LP (the 826-958 MHz version S2-LPQTR) for application which uses 826 MHz as a base frequency."AN5528 Radio communication range estimation in ISM band" gives some results about the S2-LP range at 868 MHz base frequency.Could you give an estimate, whether the range at 826 MHz should be more or less the same as at 868 MHz or could it be considerably shorter?  

I have an IO-Link sensor and would like to interface it with my STM32F103 - Bluepill or STM32F407 - Discovery board, after research found STEVAL-IOD003V1 IO-Link transceiver and found it helpful for my application.1) I wanted to know if there is any library available to interface it with STM32F103 - Bluepill or STM32F407 - Discovery board. I found example code for STM32F401RE-Nucleo and STM32L073RZ-Nucleo which is in below link.https://www.st.com/en/embedded-software/stsw-iod003.html Is there any similar example code available for interfacing with STM32F103 - Bluepill or STM32F407 - Discovery board?2) Or any set of commands necessary to provide it for best working.Help in any form would be great Thanks a lot in advance for taking time for me. This is the product https://estore.st.com/en/steval-iod003v1-cpn.htmlThese are data brief and user manual for the same

Hi, Can someone please help me explain what's going on or guide me in solving an issue with my STEVAL-IDB012V1 board? I'm debugging a project with WiSE Studio on the STEVAL-IDB012V1 board, but recently started having Launching problems with the device with the red LED on it constantly ON [See images]. Unplugging and plugging the USB cord used to fix it but not anymore.  Thank you for your help. 

Hello,I ordered this IC for one of my products and am confused about the SPI modes. In the datasheet, it is mentioned that it will support SPI mode 0 and mode 3, but I have not found any timing diagram of SPI mode 0 in the datasheet. Can you provide me more details about this IC How can I change the SPI modes and on which mode this IC works fine, and the timing diagram of SPI mode 0? Thanks and RegardsSarthak Malik 

 I am writing to you as I am currently a computer engineering student, tasked with optimizing Bluetooth Low Energy for connected glasses. I tried to optimize the connection interval of the device, as the chip is a BlueNRG-M0. I am aware that it's not possible to set the MTU to a value greater than 23 at the moment, despite it being Bluetooth 4.2.So, I focused on optimizing the connection interval instead. Initially, I tried to modify the Macros in the setup.c file (see attached image), thinking these were the CI values that the slave (the connected glasses) sent to the master (MacbookPro 2019). However, after using my Python scripts to test throughput while altering these parameters, I realized there was no difference. This indicated that the CI had to be modified elsewhere. Moreover, when the connection interval print in the JLink viewer appeared, it did not change at all despite my adjustments in the macro value.I then attempted to change the master's connection interv

In my project I need to connect UART and I2C to BlueNRG-2 in module BlueNRG-M2. I need also to connect IO too.The inside module processor will manage functions.How I can program module processor? Can I use STM32CubeIDE?I also need to debug my code.

Hello community users!There is a question that needs to be asked. Any help would be greatly appreciated! We want to know Can S2_LP UHF module receive the differential correction data generated by our own gnss base station? So we'd like to know the supported protocols as well as a description of the format. Can S2-LP support transparent protocol? We need to use the tuning method + baud rate + bandwidth that it supports.

I use BlueNRG_Sleep() API  to save power . But it wake up every 15s from WAKEUP_SLEEP_TIMER2 So how to close this

Hello,We're using mbedtls on stm32, and key generation for tls is slow. So, we've tried using a stsafe a110 for the key generation, and while looking on the i2c bus, we've seen that key generation from stsafe is about 900 ms.Is this intended ? is there no way to make it faster ?Thank you

I have a quick look, and find out that the Bluenrg-2 comes with 256 KB of flash and Bluenrg-1 comes with 160 kB of programming Flash memory.But what else? Can someone drop a quick summary or a link to an answer? Thanks.Andy

Looking for Winc3400 drivers for STM32F4,where spi interface  for wife and uart for bluetooth.

Hello.I want to get video data from USB High Speed and send to DSI interface. Video Resolution is 1920x1080, 30 fps, colors depth 8 bits. Is it possible to make this decision? If yes, what MCU you recommend me?  

The ST4SIM-200M model chip already has the Truphone operator pre-installed as I found out. So is the chip blocked for only one operator? Is it possible to upload an eSIM to the chip using the Android interface and the provided QR code from operators like Vodafone, T-mobile etc. when I have an eSIM data card from them? We need to solve for our customer the ability to upload any eSIM card to the device using the Android interface. Unfortunately, we have only read that everything is only possible via Truphone. Is there a chance how to use the chip without Truphone? The annual chip order would be roughly 2000pcs.

Hi,I have two GPIO pins on BlueNRG-LP connected to the reset and CS on a potentiostat device. The reset and CS need to be kept high during BlueNRG-LP deep sleep mode. Just wondering how to keep these two pins active while the BlueNRG-LP is put into deep sleep? I was thinking to set them as wake up sources, but do not know how to set multiple GPIOs as wake up source. Thanks for your time and help.-Olive 

What pins should we use if we would like to interface with the BlueNRG-M2SA module via UART. We currently use a UART interface on an older competing Bluetooth module and would like stay with that communication interface instead of SPI which is used on the evaluation boards.My schematic is currently wiring up a STM32L475RC processor to the BlueNRG-M2SA module as follows.USART3_TX --> Pin 3 DIO4USART3_RX <-- Pin 4 DIO5USART3_RTS --> Pin 15 DIO0USART3_CTS <-- Pin 9 DIO6I have our RTS signal connected to DIO0 instead of DI07 because we plan to actively drive DIO7 as part of the BOOT feature. I would like to use whatever the default UART pins are so as to minimize software work.I also have a question about the GND on pin 21. On the schematic for the STEVAL-IBD008V1M evaluation board, this pin is called GND_RF. There is also an inductor L3 in series between the pin and GND. Is this needed and if so, what is the value or manufacturer part number? This is not described in the datas

Hey, I am a new user at this forum sorry for any lack in communication.I have an IO-Link sensor and would like to interface it with Arduino uno and after research found STEVAL-IOD003V1 IO-Link transceiver and found it helpful for my application I wanted to know if there is any library available to interface it with Arduino uno or any set of commands necessary to provide it for best working. Help in any form would be great Thanks a lot in advance for taking time for me. This is the product https://estore.st.com/en/steval-iod003v1-cpn.htmlThese are data brief and user manual for the same

Hi,Thanks for your help in advance.I have a custom Linux board with a lsm6dsl module on the platform. The driver has been ported and I can read the Accelerometer and Gyro raw data from the Linux usersapce sysfs file entries. an interrupt line from the lsm6dsl module is connected to the main processor.I wonder if it is possible (and How) to configure to lsm6dsl module via Linux sysfs entries to generate the interrupt once the module is in certain orientation or when it detects a shock wave. image shows available sysfs entries for accelerometer and the gyroscope.Many thanks,