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Posted on October 10, 2016 at 12:42Hello, I am trying to create an application SW using M24LR-DISCOVERY using RF transceiver board to read devices containing M24LR dual eeprom, but I am struggling to get the documentation to implement functions like the M24LR-DISCOVERY SW has like auto-detect, read memory from - to.... etc. The only documentation I've found are AN3375  Application note and AN3163 Application note. Is there any docs explaining which function and which parameters I need to use to get any result. example: detect and read from EEPROM address 0x15  - CR95HFDLL_USBconnect()  - CR95HFDll_SELECT()  -  CR95HFDll_SendRec() Thanks, Sasa

Posted on October 04, 2016 at 22:01I have been struggling to set up CubeMX to be able to read and write to a USB memory stick for STM32F4-Discovery board, similarly to what is done in the example from the repository (Repository\STM32Cube_FW_F4_V1.13.0\Projects\STM32F4-Discovery\Applications\FatFs\FatFs_USBDisk). This example from ST is working perfectly.My setup procedure is as follows: Set RCC to High Speed Clock (HSE) with Crystal/Ceramic resonatorChange the clock configuration to HSE, M=4,N=x168,P=2, Q=7, so that PLL clock is 48 MHzSet USB_OTG_FS to Host_Only with Activate_VBUSSet USB_Host to Mass Storage Host ClassSet FATFS to USB DiscSet USB_Host configuration, Platform settings MSC_FS, Drive_VBUS_FS to GPIO:Output through PC0.After generating the code I &sharpinclude the fatfs.h in usb_host.c in order to be able to use the functions defined, similarly to what is done in main.c for the original example. Next the private variables (FATFS USBDISKFatFs etc) and the ''MSC_Ap

Posted on October 05, 2016 at 06:28Hi Sir / Madam,I receive error code from ST95HF :  0x87  0x01  0x90  ,   may I know what does this means  ?There is no explanation on the above code.  The explained code in ST95HF datasheet DoclD025630 Rev4  is only 0x87 0x00.  Which means timeout or no tag, meaning no acknowledge or No Acknowledge being send back.    Please help soon.Thank you very much.Cheers,kf #nfc

Posted on October 12, 2016 at 10:23Hello, Found mistakes for SYSCFG_MEMRMP register in many stm32f4 headers using last Cube F4 1.13.0 /******************  Bit definition for SYSCFG_MEMRMP register  ***************/   #define SYSCFG_MEMRMP_MEM_MODE          0x00000007U /*!< SYSCFG_Memory Remap Config */ #define SYSCFG_MEMRMP_MEM_MODE_0        0x00000001U #define SYSCFG_MEMRMP_MEM_MODE_1        0x00000002U #define SYSCFG_MEMRMP_MEM_MODE_2        0x00000004U SYSCFG_MEMRMP register should be aligned and updated as defined in RM0090, like this : /*** Bit definition for SYSCFG_MEMRMP register ***/ #define SYSCFG_MEMRMP_MEM_MODE 0x00000003U /*!< SYSCFG_Memory Remap Config */ #define SYSCFG_MEMRMP_MEM_MODE_0 0x00000001U #define SYSCFG_MEMRMP_MEM_MODE_1 0x00000002U ********************* Thanks

Posted on June 24, 2016 at 16:28 Hi there, I have some troubles with initializing my LCD with a HX8347-Controller. I have my Environment and all Settings generated with the actual Cube. I use FreeRTOS on a STM32F4 The LCD is with FMC on BANK1, NOR/.../LCD 2 connected and configered. I added also the additional Reset-Pin. The Background-LED is turned on, so that I should see everything. The Clocking is active. Because of wish to later use emWin, the Configs (Templates) for STemWin are used. Mostly all of the simple Stuff is taken from the Templates and addapted. The CRC for emWin is also active. in the GUIConf.c I changed #define GUI_NUMBYTES XSIZE_PHYS * YSIZE_PHYS * 2 in LCDConf.h I added #define XSIZE_PHYS 240 // To be adapted to x-screen size #define YSIZE_PHYS 320 // To be adapted to y-screen size In GUIConf.h I reduced to 1 Layer and removed Support for Touch+Mouse. And now the real Thing, which should be also there in a similar Way without emWin: in

Posted on September 22, 2016 at 20:33I have the development board for the STM32L073 and have been testing the functionality of the board regarding waking up from STANDBY mode. I have been able to get it to wakeup only use the IWTG funcitonality. I have NOT been able to get it to wakeup from a WKUP pin rising edge or an RTC wakeup event. I believe that I have it configured properly: - System Wakeup 1 is being used (pin PA0) - RTC Wakeup clock is set to RTCCLK / 16 (using 37k LSI oscillator) --> Wakeup counter set to 11563 (approx. 5 seconds) --> RTC global interrupt enabled Am I missing something in the configuration using CubeMX? Is there some code that I need to write in addition to what is generated? The only code the I have in the USER CODE BEGIN 2 section is the following: HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET); HAL_Delay(2000u); HAL_PWR_EnterSTANDBYMode(); So I am expecting the green LED to come on for 2 seconds, off for 3 seconds, and keep repeating, but the gr

Posted on September 26, 2016 at 12:38Hi,we are using ST95 HF NFC transceiver with XRCGB27M120F3M00R0 27.12 MHz crystal. So far, we manuufactured about 30 modules and all works well. However, we are planning a bit larger series in a close future (10k+) so we would like to be sure everything will work fine in whole operating range. Currently, we have concerns regarding a crystal specification.In datasheet (p 59) it is stated that with a crystal of ESR equal to 30 ohms, rated load capacitance should be 6pF, and also that used load capacitors should be in 10 to 20 pF range.If a crystal ESR is 5 times larger (150 ohms), does that mean that rated load capacitance should also be larger (and how much) in order to keep compatibility with embedded oscillator?We are using mentioned crystal that has 150 ohms ESR and load capacitance of 6pF. We are expecting about 5 pF of stray capacitance (including pin and PCB stray capacitance), so we are using 6.8pF load capacitors. Could this also be a p

Posted on September 01, 2016 at 11:52Hi, Putting the CR95HF into sleep mode I note that the current reduces to 1.001mA.  Putting it into hibernate mode 0.998 mA.  This is a factor of ten higher than the spec sheet quotes. I'm using the example instructions given in the spec sheet eg. 0x07 0E 08 01 00 38 00 18 00 60 00 00 00 00 00 00 and regardless of which instruction (there are examples for Sleep/Hibernate / IRQ_IN wake up SS wake up, timed wake up) it definitely seems to reduce the power considerably, but only to around 1mA. Tried this on two prototypes and both the same.  After much head scratching, now considering the possibility of out of spec devices / counterfeits etc. I'd be grateful for any better ideas. Regards Bernard McIntosh

Posted on September 22, 2016 at 12:17Hello,Can nfc03a1 read/write the tag m24lr. In the datasheet of CR95Hf; it says that ISO15693 tags are supproted and forum tag types 1,2,3,4 as well. M24LR belongs to Forum tag type V and it supports ISO15693. So I could not make sure that can I use CR95hf as transciever for m24lr tag.Thanks in advance.Kawthar 

Posted on September 16, 2016 at 13:44Hello,I'm trying to communicate with a Mifare classic card but I can't.I'm following the example described on the datasheet (page 60) and when it comes to auth, I'm sending the command:0x04 0x09 0x60 0x00 0x04 0x00 0xd1 0x00 0x3d 0x00 0x18But the answer is alway the same: 0x87 0x00I've tried modifying the frame waiting values, but the error persists.Any idea?Thanks in advance! #cr95hf-st95hf

Posted on September 22, 2016 at 12:51Hi all; I am trying to comunicate with an external flash memory with my STM32F429. I can see my signals in the oscilloscope . I see how my microcontroler starts the clock and write to the bus but the NSS signal do not change. It is always at LOW level. This is a problem with this flash beacuse it uses NSS signal to sincronice data. I have configure the SPI5 chanel with the following code:   hspi5.Instance = SPI5;   hspi5.Init.Mode = SPI_MODE_MASTER;   hspi5.Init.Direction = SPI_DIRECTION_2LINES;   hspi5.Init.DataSize = SPI_DATASIZE_8BIT;   hspi5.Init.CLKPolarity = SPI_POLARITY_LOW;   hspi5.Init.CLKPhase = SPI_PHASE_1EDGE;   hspi5.Init.NSS = SPI_NSS_HARD_OUTPUT;   hspi5.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_128;   hspi5.Init.FirstBit = SPI_FIRSTBIT_MSB;   hspi5.Init.TIMode = SPI_TIMODE_DISABLE;   hspi5.Init.CRCCalculation = SPI_CRCCALCULATION_ENABLE;   hspi5.Init.CRCPolynomial = 7

Posted on September 20, 2016 at 00:41 I am trying to change the sector security status of my RF sectors in I2C mode using the provided m24lr drivers, but it’s not working. Below is my code: M24LR_SECTOR_SEC sss_write; M24LR_SECTOR_SEC sss_read; // unlock sector sss_write.SectorLock = 0; // use first password sss_write.PassCtrl = 1; // cannot write without password sss_write.RW_Protection = 0; NFCTAG_StatusTypeDef status = NDEF_OK; uint32_t password = 0; // present password status = BSP_NFCTAG_GetExtended_Drv()->PresentI2CPassword(password); wait_ms(1000); for (int i = 0; i < 4 ; i++) { status = BSP_NFCTAG_GetExtended_Drv ()->WriteSSSx((uint8_t)i, &sss_write); BSP_NFCTAG_GetExtended_Drv()->ReadSSSx((uint8_t) i, &sss_read); } I first present the I2C password, which should be 0 because I haven’t changed it since receiving it. Afterward, I use the m24lr functions to write/read each sector’s SSS. However, even though the code runs and the status is alwa

Posted on September 16, 2016 at 22:11Hello, I really need the STM32F746G-DISCO display (RK043FN48H-CT672B) datasheet. (Not only source code of CubeMX firmware) I contact ROCKTECH and ST without success. Can someone send me this datasheet ? Thanks in advance #rocketeck-rk043fn48h-ct672b-lcd #stm32f746g-disco-rocktech

Posted on August 18, 2016 at 07:58Hi, we're using the MB1054A board for reading ISO 15693 tags and it works OK.the problem occurs after immediate power down- we are facing problems with initiation.The OS on the PC is Win-10 and we're not sure the CR95HF.dll is the same used on the application SW. how come when shut down the PC and power up again, and then open again the application SW everything is working OK?Do ST supply source code example for the PC side? 

Posted on August 25, 2016 at 15:59I am guessing that the HAL lock and unlock mechanism prevents this from happening.Does anybody have any ideas or suggestions to make simple writes to peripheral registers work again like they did in SPL? (example - GPIOA->ODR = 1;) #synth-usb-midi-nucleo-144 #synthesizer-nucleo-144-f7 #hal-direct-write-peripheral-regs

Posted on August 11, 2015 at 12:12Hi, I'm using the M24SR Discovery Board and I'm having some trouble when I want to communicate with the board via NFC. I'm trying to open a RF session with my Smartphone so that the GPO of the M24SR is driven low. Then I want to read some values out of the EEPROM and after that I want to close the session again (Deselect). Sounds easy, but I really do not get it how to send the right command for open session and deselect. My other code looks like this: //Select NFC T4 application                     iso.transceive(global.getT4select());                     //Select NDEF file                     iso.transceive(global.getNDEFselect());       

Posted on April 25, 2016 at 09:05Hi,  Is there any sample Android code for anti Collision for 24LR mult-bank design ? I want to use multi bank increase memory size for the tag(one 64k bit is not enough) and read/write from my Apps and can't found any reference code in all ST apps program. Please advise and thanks. #24lr

Posted on July 26, 2016 at 12:31Hi,in my project I'm using a CR95HF to read some M24LR memories. Communication between my microcontroller and the CR95HF is UART. I cannot find on the device's datasheet the description of how to read multiple block.Protocol used is 15693. Has anyone tried something similar?Regards,Mattia Dell'Oca #cr95hf-iso15693-multiple-block

Posted on July 05, 2016 at 12:28Hello,I've read product descriptions and FAQs, but still not clear about whether certain products offer me what I need.I'm interested in a product that consists of an MCU and an antenna, which allows me to read and write RFID messages. as a tagThe typical usecase is:1. the antenna alerts me of an incomming message2. I send a response. the response is sent exactly as I ordered - no self-added CRC or the likes.A big plus would be that the identification process is not done automatically, but I receive each message and respond to it myself.Can an ST product offer me this functionality? In which product?Thanks!

Posted on August 13, 2016 at 20:18Hello,Are there Arduino libraries for using the M24LR04E Nucleo expansion board with an Arduino Uno?Thanks,Stephen #library #arduino #m24lr04e

Posted on August 16, 2016 at 09:56Hi all,Is there a way to calculate the size of used RAM at running time. So that I can calculate how much RAM is still available for use. Actually I have to show used RAM in percentage to my product customer.

Posted on July 28, 2016 at 11:38Hello,I want to modify sector security status area to lock all sectors against RF access (R/W)To do so, I have to send a I2C present password command and then write the sector security status area.I never set the i2c password, so it should be 0000 0000hBut after presenting this password, I can't modify sector security status area.The sector security status area is still the same (I can read it)Is it possible to have a sample code or/and other documentation than AN3002 Description of the M24LRxx-R....Thank you!

Posted on June 14, 2016 at 14:02I've used code found on the internet for generating VGA video directly out of F4 devices thru r2r dacs, but since the introduction of HAL, I have yet to see any examples. Most existing code are still written for standard peripheral library only. I'm just thinking that if the Discovery boards can directly drive an LCD to 800x600x16k, is there an easy way to change the timing of the ltdc signals so that the code will drive a standard external VGA 15-pin color monitor directly? Any ideas, or suggestions? #hal-stm32f7-vga-video #stm32f7-vga-hal

Posted on July 08, 2016 at 09:46Hello,For my project i try to write some ndef message with stm32L4 and send it to M24LR discovery throw the i2c bus and after i want to read it with smartphone but all my try fail.I try the examples i2C polling and function of  cube nfc X-nucleo-NFC02A1 for generate tag but it doesn't work. The M24LR discovery board display error message = ''Not a ndef text message ''.Someone can help me please? #stm32l4-i2c-m24lr

Posted on June 13, 2016 at 11:58Hello,I'm starting with nucleo L476RG , MEMS and NFC02A1.I try to write MEMS data to nfc tag and its work.My problems is when i try to use energy harvesting mode, it  doesn't work and i don't know why. I use the exemple within the nfc cube but it doesn't work.You can look the main function and Enable_EnergyHarvesting belowCan someone help me please?Best regards #m24lr-harvested-power