Interface and connectivity ICs

I'm using STM32L476 with external memory. At first I try to read data from the external memory, then write in it, read it again and finally reset so when I'll read it I'll find what I have already wrote. But the problem is that after the reset, the data I read is always 0xFF, even though, when I write in it and then read it, I have the good data.Does any one know anything about this problem plz ?

Hi and thanks for this community, it is really useful to find answers and how-to stuff... really appreciate.Recently I bought a couple of B_L072Z-LRWAN1, right now, just to do a quick RF test.I need it before anything else. The firmware loaded allow to do it quickly, a ping-pong play between two boards, which is nice. But I am facing some questions...I have not installed the I-Cube and the LRWan pack yet. Next step. As I said, just quick RF test.Just, I need to do some changes in RF settings to check it, frequency, SF, BW... this is just for Node to Node test.I see some documents regarding AT commands. I have the board connected thru ST-Link and virtual com, and I am able to see the ping-pong messages, but no answer from any AT Command...Someone could help how to start with it?Many thanks in advance

The IDB009V1 SDK install is missing Application & Doc directories where HAL driver documentation is supposed to be?

I've just spotted what I believe to be an error. The BoM for the SPIRIT1 RF boards lists the SMA connector as 142-0701-881, on checking this is for 0.8 mm laminate, the RF board measures 1.6 mm.Your data:https://www.st.com/content/st_com/en/products/evaluation-tools/solution-evaluation-tools/communication-and-connectivity-solution-eval-boards/steval-ikr002v1.html#scroll down the page and select STEVAL-IKR002V1 BOMScroll down this pdf to the second listing (STEVAL-IKR002V1D)line 20, refdes J1This is the part datasheet:https://belfuse.com/resources/drawings/cinchconnectivitysolutions/johnson/dr-ccs-john-142-0701-881.pdfRegardsRichard

Hello,I need to know the exact power that BlueNRG-M2 module consumes as I have a certain power budget that I can't exceed.Thanks in advance

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Hi everybody,I am working on a project based on the Nucleo-L152RE.I collect large amounts of data from several sensors (high sample rate) and store the data in a micro sd card. When measure is over I would like to send the raw data to a phone using WIFI (tried bluetooth but speed is not enough for me) .I have never added wifi connectivity before. Im quite overwhelmed with too much information out there...What do you recommend me to use?I've been trying with the ESP8266 but there is too much information out there and I cannot find a good example of what I want. I don't want to set up a webserver. Do you now any good tutorial or documentation that could help me here?I am using STM32CubeMX,STM32CubeIDE, STLinkV2 and HALThqnks and stay safe!

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Hi community !I need your help with Light example for BlueNRG-2. I want to add ble to this example, like that i can use PC to communicate with the card by BLE and then this message could be transmit to mesh. What do i have to activate to archieve that ?Thanks for your help

Hi,I was seeing linking errors while compiling the STSW-BNRG-Mesh with IAR(version 8.20.1)I just downloaded this package resolved the all path errors by setting the paths. But after resolving the all errors i'm facing linking errors. Due to that i'm not able move forward. Please help me out.

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Per the STUSB4500 datasheet it provides basic ESD protection:ESD: 3 kV HBM - 1.5 kV CDMI was wondering if it's still useful to combine the STUSB4500 with a TCPP01-M12System-level ESD protection for USB type-C connector pins (CC1, CC2), compliant with IEC 61000-4-2 level 4 (±8 kV contact discharge, ±15 kV air discharge)I can't find any data for this in either datasheet. Does this make sense in practice, having both ICs on your board?

I have re-builded ST BLE MESH and ST BLE Sensor using Android Studio with ST Proxy on Dec 2019.i have to upgrade Window system on April 14 2020. java may also upgraded.now I am trying to re-build ST BLE MESH and ST BLE Sensor again. But i encounter java proxy issue, error is as below, who can give me the solution to set ST correct proxy for java ?Warning: Failed to download any source lists!Warning: IO exception while downloading manifest:java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy Authentication Required" at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:2142) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:183) at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:162) at com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openUrl(DownloadCache.java:247) at com.android.sdklib.repository.legacy.rem

Could you provide a general overview of the PLL lock status is determined in general for the PLL devices? A general block diagram or short description would be very helpful.Thank you

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Off-the-shelf GNSS receiver modules like new Teseo-LIV3F makes sense for application developers without any advanced software requirements and without too much RF expertise. In this case people can achieve fast results and avoid hassle compared to a from-scratch design based on a Teseo chip.I had a closer look at comparable GNSS modules, and it turns out that Teseo-LIV3F offers good price and comprehensive software. If you are interested in further insights from my side, click here for a competitive overview of GNSS receiver modules currently available.Take care,Kersten.

Hello,I am using the BlueNRG 1 stack ​V2.5.0.I am using the callaci_gatt_add_char(SeviceHandle, UUID_TYPE_128, &char_uuid, 20, CHAR_PROP_READ | CHAR_PROP_NOTIFY, ATTR_PERMISSION_NONE, 0, 7, 1, &CharHandle);But I am seeing that I don't always see the characteristic notification, every time I call the api  aci_gatt_update_char_value(SeviceHandle, CharHandle, 0, CHAR_LEN, CharArry);Do I need to take note of any other details/ calls ?Could anyone please direct me in the proper direction ?Regards,Tanmay

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Hello,I want to connect a muxed PSRAM (ref: W956D6KBKX) with STM32L4S5VIT in LQFP100 package, The PSRAM requires IO signals at 1.8V. and in the MCU tension is fixed at 3.3V.So is it advisable to use level translators to convert the IO signals from 3.3V to 1.8V. and vice versa? The Level translators will disrupt the timing of signal ?Can you please suggest me if there is any suitable solution for this.Thanks,Zakaria

I am using a BlueNRG-LP and started with the CCA01M1 I2S project. I changed the callback so that it applies a volume to the stream in real time. But this seems to block the code if I use a double (which id like to do to see some precision - and I want to add a tone generator in there too). If I use a int16_t then it is fine and doesnt block,If variable c is double then it blocks. If c is int then it worksanyone know why? /*Copy song fragment to Audio Output buffer*/ for(i=0; i< DMA_BUFFER_SIZE/2; i++) {   if (Amplifier.State == AMP_PLAYING) { c = *Amplifier.PlayPtr; c /= 10; c *= Amplifier.Volume; d = (int16_t) c; Amplifier.DMABuffer[i*2]= d;  Amplifier.DMABuffer[i*2+1]= d;  Amplifier.PlayPtr++; } 

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Hello,I'm trying to connect SIM7000E with STM32L476VGT by using UART4 (PA0 as Tx and PA1 as Rx)I'm already using USART2 to show messages in RealTerm and I can't use the other UARTs because I can't find the pins on the board.This is the code I'm trying to run :HAL_UART_Transmit(&huart2, (uint8_t*)"Start program\r\n", sizeof "Start program\r\n", 1000);   char RxTx_Buffer[30] = "";   HAL_UART_Transmit(&huart4, (uint8_t*)"ATE0\r\n", sizeof "ATE0\r\n", 100);   HAL_UART_Receive(&huart4, (uint8_t*)RxTx_Buffer, 20, 500);   if(strstr(RxTx_Buffer, "OK") != NULL)   {      HAL_UART_Transmit(&huart2, (uint8_t*)"Ok\r\n", sizeof "Ok\r\n", 1000);   }   else if(strstr(RxTx_Buffer, "ERROR") != NULL)   {      HAL_UART_Transmit(&huart2, (uint8_t*)"Error\r\n", sizeof "Error\r\n", 1000);    

Morning community, I'm currently working on connecting my STM32 F4 Discovery board to an HTTP server using the lwip stack, I manage to find a demo based on cubeMX on this internet site https://www.waveshare.com/wiki/File:Open407V-D-Demo-HAL.7z, so I m working on the Eth demo (N°25) in order to modify it to suite my purpose, but I'm having a bad time understanding the code , as far as I could get we're receiving and treating the incoming package but can't find any code meant to send data to the server witch the demo is suppose to do.I'm really stuck on this please any help about it would be much appreciate,

Hello, I have configured a BlueNRG-M2SA as a network coprocessor using the provided DTM_SPI.hex file. I have connected it to an external uC and am able to read data from it. The problem is that as soon as the BlueNRG boots up and the interrupt is enabled on the uC for the IRQ pin, the BlueNRG repeatedly sends requests. The header it sends is always the same: { 0xFF, 0x90, 0x80, 0x60, 0x00 } and I'm assuming the data is too. I am not able to reach anywhere in my main application like initializing gatt or gap layers as it goes from handling one IRQ request to the next, back to back. One potential problem that I am uncertain about is using the same pin, GPIO7, as both the Boot pin and IRQ pin. The BlueNRG is programmed to use the same pin for both of these. The external uC needs to drive this pin low on device reset, but then have it configured as an input by the time the BlueNRG firmware is ready. In order to avoid having two outputs connected to each other at one time, I configured the

HelloI I've read datasheet of STA8090WG, but intead of clarity, many questions arose. First of all, is this chip come with preintalled firmware, or I shoud flash it by myself?Whether there is a reference circuit for this chip?Which interface I should use to communicate with device: I see that device have USB, I2C, UART. But there is no information about communicate with device. For example, which I2C address I should you to access to this chip?Which commands I should use to communicate with it?