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Posted on January 28, 2016 at 02:45I've turned up nothing relevant in forum and web searches, so I apologize in advance if it turns out I've overlooked something painfully obvious.I'm experiencing an issue with (SWO) debug output via printf(). When I first start my app in my debugger, I see nothing. If I break and then continue execution, I see output. If I break, reset, and continue, I see nothing. I also see nothing using the ST-LINK Utility to monitor output. Now for details...The target is an STM32L152RET. In order to speed initial development (I'm constrained by board production timelines), I bought an STM32L152C-Discovery board and replaced its xRCT �C with an xRET variant. I've updated the firmware in the board's ST-LINK to whatever's current.My debugger is IAR's EWARM v. 7.50.2. My ST-LINK Utility is v. 3.8.0.Previous early development code run on an unmodified Discovery board exhibited no issues. I've not changed any configurable parameters between that workspace and the new

Posted on January 22, 2016 at 10:18Hi everyone, i try to connect M24SR chip with my MarS Board i.MX6 I didn't try to configure my inputs and outputs, just try to use it with command, that already exists in Linux.  For example with ''write()'' and ''read()'' like a work with normal files. I have problem with communication, all commands i sent - gave no result. Only one command i can sent and see it over my Osziloskop - 1) Slave adress select, it's 0x2d for my chip.2) 0x26 - to open the Session.After that i try to build a block command to select NFC-T4AC 02 00 A4 04 00 07 D2 76 00 00 85 01 01 00 CRC CRC After that i get write error -1Is it actually possible to send command with ''write/read'' functions?Adress of my M24SR chip with i2c-detect -y 0  -- 0x2D Thanks!

Posted on January 29, 2016 at 16:16 Good morning, I am trying to activate and use tha A/D converter. After activating the peripheral, I proceed to set the register in this way: ADC0.NCMR0.R = 0b00000000000000001111111111111111; /* Enable all conversion channel for test.*/ ULONG OWREN_MASK = 1 << 31; /* Enable conversion data to be overwritten. */ ULONG WLSIDE_MASK = 1 << 30; /* Conversion data written right-aligned. */ ULONG MODE_MASK = 1 << 29; /* Continuous scan conversion. */ ULONG START_MASK = 1 << 24; /* Start conversion on enabled channels. */ ADC0.MCR.R = OWREN_MASK | WLSIDE_MASK | MODE_MASK | START_MASK; when I execute the code on the discovery board, I wait for a valid data on one of the channels. if (ADC0.CDR0.B.VALID == 1) Following discovery-board manual, the AD0 port (B7), is accessible via pin A26 of the connector. I connect to that pin a 5 V voltage, expecting to read something. The problem is that I don't read an

Posted on January 26, 2016 at 17:17Hello, I'm interested in the ''I2C Watchdog'' setting in the M24SR System file. There doesn't seem to be any information in the datasheet about it, and I couldn't find anything using google either. Anyone know if and how it works, what the value in this field means (is it boolean or a timeout Setting) ? I guess it could be interesting if it helps preventing I2C deadlock conditions automatically. Thanks in advance, kind regards, Chris PS Btw also thank you to ''product Support 3'' on the other thread ''how to lock for writing'' ... for some reason the Forum didn't allow me to post a reply over there... #m24sr-i2c-watchdog

Posted on January 15, 2016 at 13:58HyWe're currently using the M24SR02-Y. With the ''TOL_ScriptingTool_ACR122'' software and a ACR122 NFC Reader/Writer device we store some data to a ''Select NDEF File'' with following command:; [1] Select NDEF File00 A4 04 00 07 D2 76 00 00 85 01 01 00 (9000); [2] NDEF select command00 A4 00 0C 02 00 01 (9000); [3] Write 193 Bytes data to the nfc EEPROM at position 0x0000 D6 00 00 C1 AA 01 38 26 06 00 03 0E F0 24 FD 45 14 00 D7 11 64 00 00 00 00 00 00 00 F0 24 00 00 00 00 A8 61 00 00 00 00 B5 0B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 0A D7 23 3C 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 80 3F 00 00 00 00 00 00 8

Posted on January 13, 2016 at 13:59Dear all, How to create a NDEF Text message using M24SR with STM32F411? I manage to create a 7 bits text message using M24SR_UpdateBinary (and mbed lib) How to create a >7 bits NDEF text message using only ST libraries? Thanks, Regards YMA #ndef-text-m24sr-stm32f411

Posted on December 22, 2015 at 03:04 Dear all ST staff, I found a small bug in latest CubeF7_V1.3.0/HALDriver_V1.0.3. Bug found at HAL_SD_GetCardStatus() on stm32f7xx_hal_sd.c. --- b/stm32f7xx_hal_sd.c +++ a/stm32f7xx_hal_sd.c @@ -2103,9 +2103,9 @@ { HAL_SD_ErrorTypedef errorstate = SD_OK; uint32_t tmp = 0; - uint32_t sd_status[16]; + uint8_t sd_status[64]; - errorstate = HAL_SD_SendSDStatus(hsd, sd_status); + errorstate = HAL_SD_SendSDStatus(hsd, (uint32_t*)sd_status); if (errorstate != SD_OK) { ''sd_status[]'' array should be parse by ''uint8_t'',but currently code parse as ''uint32_t''. I noticed this bug when I implement read SDCard status register function in disk_ioctl(). Plz fix until next release. Best regards, Nemui.

Posted on September 30, 2015 at 17:08Hi,I write the NDEF area of a M24SR with an Android Application Record. Whenever I put the tag close to the phone, it launches an application, in my case the Calculator. That is ok.Now I want this tag to be write-protected, so its NDEF content is final and nobody can modify it anymore. I've tried using the ''M24SR Demo'' application to ''Lock Write Access''. I set a password successfully.However, now the Android phone does not launch the calculator application anymore when put next to this tag. It says ''non-compatible label''. Whenever I remove the password it works again. That is NOT what I want. I simply want the content of the tag to be read-only while still working flawlessly with Android.So, please tell me how to achieve this :) Thanks a lot in advance. #m24sr-password #m24sr-password

Posted on November 23, 2015 at 14:43HI, How can I write two or more records of same type to Dynamic NFC tag?E.g if I want to write WriteEmail,SMS,URI or any such Data can I call it twice? like TT4_WriteVcard() TT4_WriteVcard()or TT4_WriteSMS() TT4_WriteSMS()and so on.. Kindly advice.! what is the maximum number of such similiar records can be written.Can they be read in same fashion? Rgds. Rp #m24sr #nfc #m24sr #multiple-ndef

Posted on December 17, 2015 at 11:59Hi , I am trying to write AAR (via I2C in STM32 h/w )using the below code but the NFC Reader Doesn't seems to detect it as an AAR record .sAARInfo aAAR = ''com.myapp.com''}; while ( TT4_AddAAR(&aAAR) != SUCCESS);IS there any smaple code to test the AAR read/write .Also various NDEF formats?Thanks in advance!Rgds,Rp #android-app #nfc #m24sr

Posted on December 09, 2015 at 16:43Hi,I was wondering how can I interact with the M24SR in a continuous manner. I mean, now I can write and read the NDEF in my M24SR with my mobile phone, that is nice. On the other side, I also have a MCU attached to the M24SR tag. However, for my phone to read what something I have just written, I have to separate the phone and the M24SR tag, and place them near again.I was wondering how can I interact as fast as possible with the M24SR. For example, I would like to write some number using my phone to my M24SR tag (ex: '4'). Once written, the GPO pin flags this to the attached MCU I have. The MCU reads the fresh new NDEF content, adds '1' to the content, and it writes back '5' to the M24SR tag. Then, the mobile phone, without the need for separating them, reads back the result of the operation.Can this be done with M24SR? I guess there is something I can toggle to simulate a separation between M24SR and mobile phone. Maybe some command send by

Posted on December 16, 2015 at 10:04hi i'm new here i juste start with STM32-P207 board, i need to use temperature sensor in board, it connect with PG12 & PG10, but i dont find in Alternate function mapping that PG12 & PG10 are mapping in I2C Any help please ! 

Posted on December 10, 2015 at 02:32The newly released STM32CubeF7 Software v1.3.0 download link button gives a 404-not found message. Is it possible to fix that link button? #stm32cubef7-software-v1.3.0

Posted on October 19, 2015 at 21:50I have 2 HID iClass cards, but I am unable to communicate with them. I've tried all the ISO15693 settings in the datasheet. What settings should I send to the CR95HF to make it talk to the HID iClass cards? Thanks! #cr95hf-iso15693-iclass

Posted on June 08, 2015 at 15:32Dear Sirs, we have the EVB M24LR-Discovery. If we try to copy a binary file with the ''Reader Application -> Load File to EEPROM'' , we get an error ''Tag no answer''.If we copy an image with: �?ImageTransferApplication�? we get no errors. What is the difference? What is wrong?Regards

Posted on November 19, 2014 at 00:22 My ANT1M24LR16E does not seem to repond to my I2C commands. After the Send7bitAddress it reponds with a NACK (SDA high on one SCL clock). This is the first time I'm writing to it. Any ideas on why it is not working? /* Turn on M24LR16E */ GPIO_HIGH(GPIOD, GPIO_Pin_2); Delay(100); //x10ms /* Generate start condition */ I2C_GenerateSTART(I2C1, ENABLE); while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)){} //Wait until bus is free /* Send device select+read/write cmd and wait for ACK */ I2C_Send7bitAddress(I2C1, 0xA6, I2C_Direction_Transmitter); //0xA6 = 0b10100 Page 18 datasheet while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)){} /* Send address byte. Wait until data has been received */ I2C_SendData(I2C1, 0x00); //Register while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)){} I2C_SendData(I2C1, 0x2A); // Data to be written while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED))

Posted on November 27, 2015 at 16:56Hello, I have a problem with writing to the memory via I2C.Background info:1.I can read and write via NFC with the CR95HF Board from/to the memory. 2. If I want to get the system info of the M24LR64 it says: ''8013000F041FF177132C02E0B000FF07032CFFFF03  03 -> CRC HS (expected=965C)'' and doesn't give any answer. (I don't know if it it important for my problem)The Problem:If I communicate via I2C I get the ACK bit of the slave, that it received the data. But the data is not stored correctly (I can see it if I read out the memory via NFC). The data is stored at the right place, but not correct.For example the memory 0000 is 00 00 00 00 and I write FF FF FF FF to it. Then I read it out via NFC and there is 800800FFFFFFFFFFFF03 instead of FF FF FF FF. If the memory 0000 is FF FF FF FF and I write FF FF FF FF there is no problem. I hope someone can help me out. best regards and sorry for my english  #m24lr64 #i2

Posted on November 23, 2015 at 07:24HI, I wanted to interact with X-NUCLEO-NFC01A1 (m24sr NFC dynamic tag ) by interfacing it with embedded linux board. I have googled and found this link and code : https://github.com/whaleygeek/pi_m24sr Is there any other sample code and hardware interfacing (sda,scl,vdd etc) information for interfacing m24sr with embedded board and using it for reading.writing. Or any m24sr linux drivers? Kindly let me know soon ! Thanks and Rgds, Rp #nfc01a1 #linux-driver #m24sr

Posted on November 13, 2015 at 18:42Hello everyone, i need some help, so if anyone could, i'd be grateful. I need to start two timers instantaneously at the same time, when external event happens. Lets say, rising edge on the pin should trigger two timers to start. How it should look like can be seen in RM0090 18.3.15 - Timer Synchronization, Figure 179. However, i am not able to achieve is and i dont quite understand from RM which Timers can work as masters and which ones can work as slaves. I was trying different kind of combinations, but here is my code for now (which is not doing what i want). #include ''main.h''uint32_t counter = 0;int main(void){rcc_config();get_system_clocks();gpio_config();timers_config();GPIO_SetBits(GPIOD, GPIO_Pin_12);while(1){counter++;}}void get_system_clocks(void){RCC_GetClocksFreq(&rcc_struct);}void rcc_config(void){RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_GPIODEN, ENABLE);RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_GPIOAEN, ENABLE);RCC_APB1PeriphClockCmd(RCC

Posted on November 18, 2015 at 05:25I have to integrate NFC into STM32 series controller. I am able to successfully detect the tag by sending following commands. After successful completion of Select2 process.I send PWD_AUTH commnd as my tag is read and write protected. I get response as 87 00(Frame wait time or no Tag) But my PWD_AUTH command internally it is success and i can get access to read and write into the tag.PWD given is accurate and correct in ascii values. Can you let me know why instead of PACK response i get 87 00 </colgroup> 0x02 0x02 0x00 0x00 PCD Field OFF 0x09 0x04 0x68 0x01 0x07 0x00 Reset RF 0x09 0x04 0x68 0x01 0x07 0x10 Set RF 0x02 0x07 0x02 0x00 0x00 0x00 0x00 0x02 0x02 Protocol Select 0x09 0x04 0x3A 0x00 0x58 0x04 PCD WR REG Gain:0x58 0x09 0x04 0x68 0x01 0x01 0xD3 PCD WR REG Gain:0xD3 0x04 0x02 0x26 0x07 REQA 0x04 0x03 0x93 0x20 0x08 AntiCol1 0x04 0x08 0x93 0x70 0x88 0x04 0xBF 0x66 0x55 0x28 Select1 0x04 0x03 0x95 0x20 0x08 AntiCol2 0x04 0x

Posted on September 17, 2015 at 17:27HelloI am using an M24LR16E-R eeprom in I2C mode.I have written to the I2C_Write_Lock bits and have set sector 0 as write-protected.  Process as follows:Present Password commandWrite I2C_Write_Lock bit (0x0001) //to set sector 0 as protectedI have read the write lock bits afterwards and confirmed that they have been changed.  However, when I have tried to write to sector 0, it is still possible to write the memory sector despite the lock bit being set.Have I missed a step?  Any help would be much appreciated.CheersDan #m24lr16e #stm32l-m24lr16e-i2c

Posted on October 19, 2015 at 06:41Hi Guys, I got problems in the calibration-process (same routine like in the ST95HF Eval Firmware). I should get Responses of the ST95HF like ''0x00 0x01 0x01'' or ''0x00 0x01 0x02'' to get the DAC Data High border. But instead the Repsonses I should get, I get ''0x00 0x01 0x80''. The Datasheet says something like that to the Error Code 0x80:EFrameRecvOK Frame correctly received (additionally see CRC/Parity information) But that really doesn't help me. I also get sometimes the Error Code 0x82. Is there an application note, which recommends what o do with the different error codes? Thanks a lot! #st95hf-cr95hf-95hf-error-codes

Posted on November 13, 2015 at 14:39Hello,I read the following article in the NFC Forum website: http://nfc-forum.org/nfc-v-just-got-better-heres-how/I have a question regarding the NFC TAG M24LR Series from ST. The M24LR Series is considered NFC Forum Type 5? In the page of http://www.st.com/web/en/catalog/mmc/FM76/CL1766/SC1412/SS851?icmp=ss851_pron_m24lr-pr1_jun2014&sc=m24lr-pr1 does not say about NFC Type 5.If so, what the advantages and disadvantages of using the TAG M24LR (TAG Type 5) instead of M24SR Series (TAG type 4)? #nfc-tag-type-5

Posted on July 07, 2015 at 10:48Hi, I'm using STM32L053 Nucleo, I have wrote some code for it to run, and I wish to do a RAM estimation to see RAM usage of current firmware. How to see the RAM usage? Regards #memory

Posted on August 22, 2013 at 09:03Hello, I am trying to make my m24lr discovery board work under Linux. I've seen that ST provides a DLL to communicate with the green board under windows, but I'd like to use it under Linux. As far as I've seen, it is a HID device, but even by reading the source codice for its microcontroller, I've been only able to understand that the firmware forwards the commands to the CR95HF, but I was not able to understand the format of the commands. Do you have a working code to use that board under linux? Or do you have a bit more documentation, so that I can try to use the board with libusb? Thank you Ottavio #cr95hf #linux-driver-cr95hf #linux #linux-driver-cr95hf