Interface and connectivity ICs

Posted on May 20, 2014 at 22:46Back in the December 2013 version of UM1695, there was a command to set the transmitter power of the module:at+s.scfg=wifi_tx_power,42In the firmware that I have, I get the response ''ERROR: Unrecognized key'', and getting the value of wifi_tx_power gives the same result.Is it still possible to set the transmitter power? If not, what is the default setting equivalent? 0dBm? +18.3dBm?Thanks,Andrei #spwf01x

Posted on May 21, 2014 at 16:20Hi,I'm trying to use MikroElektronika RFID Click (with a CR95HF embeded) as RFID Reader with a STM32F407VG.The CR95HF is connected to the STM32F4 by SPI. The driver and Lib provide by ST are working with STM32F1. It doesn't work on STM32F4. I've tried to modify the driver and lib, by mainly reconfigure the GPIO. It still not working.The STM32F4 can't communicate with CR95HF. (No response to Echo request).The SPI GPIO are configured as follow :  /* configure pins used by SPI1 * PA5 = SCK * PA6 = MISO * PA7 = MOSI */ GPIO_InitStruct.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_6 | GPIO_Pin_5;GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;GPIO_Init(GPIOA, &GPIO_InitStruct);// connect SPI1 pins to SPI alternate functionGPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_SPI1);GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_SPI1

Posted on April 30, 2014 at 01:29Can the SPBT2632C2A module be setup to use SPI communications in an embedded application instead of UART?  Is a new firmware needed to accomplish this? Is there an example on how to set this up?

Posted on April 09, 2014 at 17:28Hi there, the BlueNRG current consumption estimation software tool (STSW-BNRG001) is now available on st.com The STSW-BNRG001 allows you getting a current consumption estimate of the BlueNRG IC under different application conditions. Interested knowing more ? Check this out: http://www.st.com/web/catalog/tools/FM147/CL2116/SC1893/PF260405

Posted on April 04, 2014 at 00:05I am currently working a project to detect the version of STDP4020 firmware. I got all the data bytes of this firmware, can anybody give me some clue how to interpret them, particularly, which part tells the version number of this firmware?Attached is the databyte I got.Thanks a lot! #stdp4020

Posted on March 21, 2014 at 09:03Hi all, can you clarify which is the status of the BlueNRG pinin reset mode? Best Regards &Thank you

Posted on March 21, 2014 at 09:09Hello,   I am wondering about the purpose of the EEPROM on the RF BlueNRG board. Please coud you give me any clarifications?  Thank you

Posted on March 19, 2014 at 18:16I'm having some issues with the SPWF01S WiFi modules. I have tried putting in a technical support request, but haven't gotten much response in the last month. I was wondering if this would be an appropriate place to ask questions about this module? (Yes, I'm intentionally holding back on asking questions now)

Posted on March 21, 2014 at 09:16Hi, What is the recommendation about the use of these two algorithms in the application? By default DLL is selected, I would like to understand if it is possible to use PLL mode or not. Any more detailed description about this topic would be great. Thanks Rgds

Posted on March 14, 2014 at 02:33I am using STM32L151CBU6 and SPIRIT1 for wireless sensor design. I made my own boar reference SPIRIT1_DONGLE_REVa. When I used SPIRIT1_WMBUS_Example.eww to debug my boar,I find that there are wanting five source files. These files are c:\users\salvo pecorino\Documents\spirit1\Devkits\Firmwave\wmbus_libraries\Link\src\wmbus_crc.c,c:\users\salvo pecorino\Documents\spirit1\Devkits\Firmwave\wmbus_libraries\Link\src\wmbus_linkserices.c,c:\users\salvo pecorino\Documents\spirit1\Devkits\Firmwave\wmbus_libraries\Link\src\wmbus_link.c, c:\users\salvo pecorino\Documents\spirit1\Devkits\Firmwave\wmbus_libraries\Link\src\wmbus_phy.c, c:\program Files(x86)\IAR systems\Embedded workbanch 6.4\arm\inc\c\Dlib_product_string.h . How can I solve the problem? Or how can I get the files? Many thanks.  #spirit1

Posted on March 13, 2014 at 16:15Hi ST, I didn't find the description of Bluehci_Gatt_notification command,in page 55 of BlueNRG Application Command Interface.pdf, it mentioned ''Char Properties 1 byte Bitwise OR values of Characteristic Properties (defined in Volume 3, Section 3.3.3.1 of Bluetooth Specification 4.0) '',Is  Volume 3 mentioned here Part G( GENERIC ATTRIBUTE PROFILE(GATT)) in Bluetooth Specification 4.0.  If it is,when   0x0001  (but in our project,char_properties : 0x10 // notify, 0x0A read/write) ,The Characteristic Value shall be notified.my question is as follows: 1. Regarding the value is 0x0001  not 0x10 ,Is it right?  2. if we use BlueNRG transmit some big data packet, is it reasonable by Gatt_nofification?

Posted on March 04, 2014 at 19:19 </colgroup> Hi ST is it possible to change the physical over the air data rate of BlueNRG on purpose for specific applications, from 1MBit/s to lower ones ? Thanks in advance #bluenrg