Solved

Posted on January 06, 2017 at 12:37Hello ST,it seems that the escape_seq parameter does not work as expected in the IDW01M1.There are some discrepancies between the user manual and the obtained results. Please have a look at my transcript:12:16:15.761 [TX] - at+s.scfg=escape_seq,at+miao<CR>12:16:26.101 [RX] - OK+WIND:61:Incoming Socket Client:192.168.0.218+WIND:60:Now in Data Mode12:25:49.307 [TX] - at+miao12:25:49.807 [RX] - +WIND:59:Back to Command Mode12:26:05.899 [TX] - at+miao12:26:10.363 [TX] - at+miao<CR>12:26:10.595 [RX] - ERROR: Command not found12:26:13.700 [TX] - AT+S.<CR>12:26:13.703 [RX] - +WIND:60:Now in Data ModeSo, it seems that:1) escape_seq only changes the data->command sequence, but not the command->data2) when in command mode, you need to send a to activate the sequence, despite the fact that the manual states the opposite.Some more information:♯ nv_model = SPWF01SA1♯ nv_serial = 3915D31697♯ version = 160129-c5bf5ce-SPWF01SGiuseppe#x-nucleo

Posted on December 21, 2016 at 05:41Hi,I(or may be ST) have a ptoblem. I tried to use ADC1 & ADC2 in regular dual mode with DMA on STM32F103C8T6 MCU(startup code generated by last CubeMX). If I configure ADCs in continues mode, then start ADC2(using HAL_ADC_Start()) and then start ADC1(using HAL_ADCEx_MultiModeStart_DMA()) all works fine. But it is too fast collect data.I remove continues bit from ADCs in my code:MODIFY_REG(hadc2.Instance->CR2, ADC_CR2_CONT, ADC_CR2_CONTINUOUS(DISABLE));MODIFY_REG(hadc1.Instance->CR2, ADC_CR2_CONT, ADC_CR2_CONTINUOUS(DISABLE));and start them again. In timer interrupt I trigger ADC1:SET_BIT(hadc1.Instance->CR2, (ADC_CR2_SWSTART | ADC_CR2_EXTTRIG));And happens something strange: all looks fine, DMA collect data but data from ADC2 is invalid. Looks like it same data as in first conversion after start ADCs. I found, that if I will set ADC_CR2_EXTTRIG flag for ADC2 before triggering ADC1 all works fine:SET_BIT(hadc2.Instance->CR2, ADC_CR2_E

Posted on July 15, 2016 at 14:35Hi All,I'm using STM32L475, STM32CubeMX 4.15.1, STM32L4 firmware library 1.5.1 and the code generated by STM32CubeMX. When initializing ADC1 and ADC2 the ADC2 initialization, MX_ADC2_Init(), sometimes calls ErrorHandler() because HAL_ADCEx_MultiModeConfigChannel() is returning and error.HAL_ADCEx_MultiModeConfigChannel(), stm32l4xx_hal_adc_ex.c, is called with hadc->Instance = ADC2; therefore, ADC_MULTI_SLAVE(hadc, &tmphadcSlave) sets tmphadcSlave->Instance = NULL. When ADC_IS_CONVERSION_ONGOING_REGULAR(&tmphadcSlave) is called a NULL pointer, tmphadcSlave->Instance->CR, is dereferenced and leads to unexpected results.The NULL pointer deference can be fixed by changing macro ADC_IS_CONVERSION_ONGOING_REGULAR, stm32l4xx_hal_adc.h, to#define ADC_IS_CONVERSION_ONGOING_REGULAR(__HANDLE__)                                         \  &nb

Posted on August 03, 2016 at 15:14Hello! I am trying to start ADC2 on stm32l476, but it always goes to error handler multimode.Mode = ADC_MODE_INDEPENDENT;     if (HAL_ADCEx_MultiModeConfigChannel(&hadc2, &multimode) != HAL_OK)     {     Error_Handler();     } This condition never return true if ( (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)     && (ADC_IS_CONVERSION_ONGOING_REGULAR(&tmphadcSlave) == RESET) ) I checked bits in registers but they are ok. Can you tell me thats wrong?

Posted on November 04, 2016 at 05:47The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on October 24, 2016 at 03:17 I'm working with STM32L476 trying to get a microSD card to communicate. Initially I'm sure I was getting a response, but now when I send CMD8 the chip does not see a respons from the card (SD_CMD_RSP_TIMEOUT). Even though the signal is present on D0. Here is clock setup, initially clock runs at ~300kHz for setup. /** System Clock Configuration */ void SystemClock_Config( void ) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInit; RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE | RCC_OSCILLATORTYPE_MSI; RCC_OscInitStruct.LSEState = RCC_LSE_ON; //Low speed external crystal RCC_OscInitStruct.MSIState = RCC_MSI_ON; //Mid speed internal osc RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; RCC_OscInitStr

Posted on January 12, 2017 at 21:10This CRC is used by an I2C peripheral and documented at http://www.sensirion.co.jp/fileadmin/user_upload/customers/sensirion/Dokumente/GasFlow/Sensirion_Gas_Flow_SFM3000_CRC_Checksum.pdf  Can this CRC be duplicated using the CRC IP on the STM32F7? The HAL library defaults to X^4 + X^2 + X^1 and I seem unable to change that (and it states that the exponents must be less than 8.) I tried substituting the code for the polynomial above (0x131) and the HAL initialization code rejected it.Is this a shortcoming of the library or a limit of the H/W?Code to init the CRC produced by Cube is:/* CRC init function */static void MX_CRC_Init(void){hcrc.Instance = CRC; hcrc.Init.DefaultPolynomialUse = DEFAULT_POLYNOMIAL_DISABLE; hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_DISABLE; hcrc.Init.GeneratingPolynomial = 0x7; hcrc.Init.CRCLength = CRC_POLYLENGTH_8B; hcrc.Init.InitValue = 65535; hcrc.Init.InputDataInversionMode = CRC_INPUTDATA_INVERSION

Posted on January 12, 2017 at 16:35Hello!I have a question about STM32F429-Disco evaluation board. As I see, LD3985 is used to supply the power to all on-board units (MCU, LCD, MEMS, SDRAM and others). But as it is written in LD3985  datasheet, it can provide only 150 mA output current. I think it's not enough for all these modules... How does this board work? =)Thank you in advance!#schematic #ld3985 #stm32f429-disco #evaluation-boards #power-supply

Posted on January 12, 2017 at 00:31On GPIOG, bits 0 and 1 control a pair of LEDs through external drivers. GPIO_ToggleBits() will set or clear the bits and GPIO_SetBits() will set the bits. However, GPIO_ResetBits() will not clear the bits, nor will GPIO_WriteBit(). GPIO_ReadOutputData verifies what I see on the LEDs.Any thoughts?Thanks,jh

Posted on January 12, 2017 at 13:21Hi,Is there a sample implementation of a NTP client to get the time from a timeserver?I use the SPWF01SA together with a STM32F401.BR,Manfred#spwf01-ntp

Posted on January 12, 2017 at 10:59Hi !First, I use the version 4.18.0 STM32Cube V1.0, and Atollic True Studio 7.0.1, so both are (normally) the last ones.I try to generate, with CubeMX, a project on STM32F417VG, using several libraries, the STM32_USB_HOST_LIBRARY for MSC being one of them. My problem is that I cannot use this project !I generate the project -> I compile -> Works !I generate the project -> I add these lines in the main.h :&sharpinclude ''usbh_def.h''USBH_HandleTypeDef hUSBHost;I doesn't change anything else, and I don't write anything else but it doesn't compile, I have some strange errors. Four of them are about four different macros (USBH_MAX_DATA_BUFFER, USBH_MAX_NUM_ENDPOINTS, USBH_MAX_NUM_INTERFACES, USBH_MAX_NUM_SUPPORTED_CLASS) in the file ''usbh_def.h'' with this message :Macro undeclared here (not in a function)But those macros are declared in usbh_conf.h which is directly included in usbh_def.h.Another error is :USBH_DeviceTypeDef has no member

Posted on January 11, 2017 at 13:08Hi,I know this is a new chip.Maybe someone can direct me to some code or use cases related to stsafe authentication?Thanks #stsafe #authentication

Posted on January 11, 2017 at 12:21Hello,I am using LSI clock(40KHz) as the RTC clock source and enabled the LSI using the RCC_LSICmd(ENABLE);I configured the RTC registers and the time is leading to the real time.Initialised the RTC:RTC_InitStruct.RTC_HourFormat = RTC_HourFormat_24;RTC_InitStruct.RTC_AsynchPrediv = 99; RTC_InitStruct.RTC_SynchPrediv = 399; RTC_Init(&RTC_InitStruct);Can any one tell, how can I generate an RTC interrupt for every 1 second? And also do am I missing any configuration in clock and prescaler setting?Regards,Sowmya#rtc #stm #stm32f373 #stm32f373-rtc

Posted on January 10, 2017 at 11:11Hi,I'm trying to put some data in bank2 of an stm32L152ZET6. This data is initialized like this:__attribute__((__section__('.arrayFlash')))         uint32_t flashData[200] = { 8, 8 , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};__attribute__((__section__('.arrayFlash')))         uint32_t flashStrings[100] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};Here's the link file/* Entry Point */ENTRY(Reset_Handler)/* Highest address of the user mode stack */_estack = 0x20014000;    /* end of RAM *//* Generate a link error if heap and stack don't fit into RAM */_Min_Heap_Size = 0x200;      /* required amount of heap  */_Min_Stack_Size = 0x400; /* required amount of stack *//* Spe

Posted on January 11, 2017 at 21:22Hi,Here is my program#include <stdio.h>#include <string.h>#include 'stm32f10x_gpio.h'#include 'stm32f10x_rcc.h'#include 'stm32f10x_usart.h'#include 'stm32f10x_spi.h'#define SPI_FLASH           SPI3#define SPI_CLK             RCC_APB1Periph_SPI3#define SPI_GPIO                GPIOC#define SPI_GPIO_CLK        RCC_APB2Periph_GPIOC#define SPI_PIN_SCK         GPIO_Pin_10#define SPI_PIN_MISO        GPIO_Pin_11#define SPI_PIN_MOSI        GPIO_Pin_12void SPI3_IRQHandler(void){                    USART_SendData(USART1,SPI_I2S_GetITStatus(SPI3, SPI_I2S_IT_TXE)+

Posted on January 02, 2017 at 17:01This is my CODE:void ADC_t_init(void){    ADC_InitTypeDef          ADC_InitStrc;    ADC_CommonInitTypeDef     ADC_CmmInitStrc;    /* Configure the ADC clock */    RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div256);    /* Enable ADC1 clock */    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);    /* Calibration procedure */    ADC_StructInit(&ADC_InitStrc);    ADC_Init(ADC1, &ADC_InitStrc);    ADC_Cmd(ADC1, DISABLE);    ADC_VoltageRegulatorCmd(ADC1, ENABLE);    /* Insert delay equal to 10 µs */    Delay(10);    ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);    ADC_StartCalibration(ADC1);    while(ADC_GetCalibrationStatus(ADC1));    calib

Posted on January 06, 2017 at 17:40HelloHere is my code#include <stdio.h>#include <string.h>#include 'stm32f10x_gpio.h'#include 'stm32f10x_rcc.h'#include 'stm32f10x_usart.h'#include 'stm32f10x_spi.h'#define SPI_FLASH           SPI3#define SPI_CLK             RCC_APB1Periph_SPI3#define SPI_GPIO                GPIOC#define SPI_GPIO_CLK        RCC_APB2Periph_GPIOC#define SPI_PIN_SCK         GPIO_Pin_10#define SPI_PIN_MISO        GPIO_Pin_11#define SPI_PIN_MOSI        GPIO_Pin_12void SPIConfig(void){SPI_InitTypeDef  SPI_InitStructure;  GPIO_InitTypeDef GPIO_InitStructure;  /* Enable SPI and GPIO clocks */  RCC_APB2PeriphClockCmd( SPI_GPIO_CLK

Posted on December 06, 2016 at 02:50Hi,I am trying to put the STM32F769i_EVAL into system BOOT mode. I can do this successfully with an F429 Eval but not with the F7 Eval. I can see that when I reset it the normal program does not run , indicating that Bot mode has been entered , but it does not respond to the 0x7f (connect ) command.I've tried with both my own known working software loader and the ST flash loader. I am using UART 1 which is otherwise working. Ive tries various baudrates down to 9600.I am pulling up the Boot pin JP1 directly to VDD and resetting the board.Many ThanksImtiaz#stm32f7-boot-mode

Posted on January 03, 2017 at 17:53Hello,I have a CR95HF chip and I would like to set the TVDD power consumption to set a certain battery lifetime in my system. I used the excel tool to set a proper impedance and the formula to calculate current drained from VPS_TX. The problem is that they do not match.I measured the impedance of my own antenna with a miniVNA-pro net analyzer. I used the Excel tool to calculate L0, C0, C1 and C2 values for a 27ohm impedance and I assembled tem. The problem is the final measured impedance of the matching+antenna set was ~51ohm. Also, the current measured at VPS_TX was about 37mA, value that corresponds to a impedance of aprox 78ohm.Since anything is giving the values expected, what should I take as a valid result? How can I measure the final matching+antenna impedance?Thanks#antenna #current #impedance

Posted on January 09, 2017 at 00:16I try use two drivers. I can switch on/off any output channel, but I can't use brightness registers correctly. Manual has description how work with one driver. But if I send brightness data to first driver, a second driver takes that data too. And if I try send brightness data for each driver, both of them listens only second packet. How correctly work with brightness on this driver?#led1642gw

Posted on January 06, 2017 at 11:20Hello,I am trying to find out why STM32F427 is crashing into HardFaultHandler in new batch of PCBs.Please note firmware is proven and is running fine on many boards without any issues, but with new batch of PCBs, microcontroller is not stable at 180Mhz. I found out, that when I decrease clock (HCLK) for example down to 150Mhz, MCU is running fine, but with 180Mhz MCU is falling into HardFaultHandler (from random code locations). Even if i try debug simplest possible 'blink LED' loop firmware. Clock source is 25MHz crystal, power supply 3.3VDC.Did anyone encounter similar issue, any ideas?Thanks.Jan#stm32f427 #180mhz #hardfault_handler

Posted on January 06, 2017 at 12:15Hello,I am using a custom board with a STM32F107VC processor. I am trying to get LWIP working in combination with FREERTOS. I am building using STM32Cube and importing into STM32 System Workbench,I can see DHCP packets being sent from my controller, arriving on the network (seen via wireshark). My DHCP server responds, but the micro controller does not seem to be able to process the message correctly.I can see that the tcpip_input thread is being called because I can put a breakpoint into it. This then progress into sys_mbox_trypost() which seems to be failing with a -1 ERR_MEM which has a note above it 'could not post, queue must be full'Does anyone have any idea what the issue may be?Thank youDaniel

Posted on January 06, 2017 at 05:22Hi,I got a NUCLEO-F767ZI development board, and it works perfectly.However, after programmed some custom firmware, now I would like to try the factory preloaded LED blink firmware.Where can I download the firmware or how to build the firmware?Thanks#nucleo-f767zi #demonstration

Posted on January 06, 2017 at 15:42We use the STM32F100VC for one of our projects. We were able to order devices marked as STM32F100VCTB (Revision A) and the STM32F100VCT (Revision X). Based on the ordering information of the device the letter 'B' stands for 'internal code'. The errata sheet of the device is only valid for device marked with internal code B. We are not able to find any information about the internal code B and what the difference would be between devices which are marked and which are not marked. There is a difference because the UART1 of the marked devices works and the UART1 of the unmarked devices fails. Has any body any idea for what the internal code B stands and why devices could be ordered with and without this mark? 

Posted on January 06, 2017 at 15:42Hello,Here is my issue.I have a 100 KBytes of code in my flash memory and I need to duplicate this code into another part of the memory.I use a copy function to read 4 bytes and copy them in the new memory area and repeat this until all memory has been written.But, almost each try is unsuccessful and severals bytes are not duplicated (~10 to 20) and they are always located at the same flash addresses. (but not continuously)My MCU is a STM32L151CC.Does anybody have experienced this ?Thanks.#flash-memory #duplicate #flash #flash-programming