how i can recover the ip adress in table
#ifdef USE_DHCP ip_addr_set_zero_ip4(&ipaddr ); ip_addr_set_zero_ip4(&netmask); ip_addr_set_zero_ip4(&gw);
Forum Posts
STM32F1: DMA read once with USART3 in LIN Bus project
Hi everyone:cherry_blossom:I start in learning LIN bus and I wrote a basic example contain master task and slave task in STM32f103 and communicate with one slave (stm32f429), the problem in stm32f1 MCU in that the DMA read just once! so the first fra...
Resolved! STM32F413 DMA1 peripheral restrictions?
I'm having trouble understanding this from the datasheet and reference.What peripherals are allowable targets for DMA1 memory-to-peripheral transfers?Thanks, Best Regards, DavePS: I tried to use a stream in DMA1 to write to a DMA control register, an...
PMOD interaface sample pin configuration code
Hi Team,Am working with STM32L4R9 Discovery board,In this SOC, PMOD interface is configured to UART in defaultWhen am trying to use this a SPI interface, am facing issueCan you pls share me the sample pin configuration for PMOD connection to configur...
Timer 2 - STM32F427ZIT6
Hello.I try timer 2 on STM32F427 and I have a problem. It ticks too quick.Here is my system clock. I have external crystal: 25MHzClock I want to: 168MHzvoid SystemClock_Config(void) { uint32_t i; LL_FLASH_SetLatency(LL_FLASH_LATENCY_5); if...
What happened to FSMC?
Many of the "older MCUs" like STM32F4xx had an FSMC. I've been thinking about switching to the newer STM32F7xx and have bought a Discovery board for STM32F7508, but there are no references to FSMC in the documentation. Apparently F765/7/8/9 have a "F...
How do I find out when DMA FIFO is empty on STM32F446?
I'm working with the STM32F446 microcontroller and I'm using UART with DMA. The size of my UART packets is contained in the 3rd and the 4th packet bytes and I would like to use FIFO on the receive stream to increase the likelihood for successfully re...
[STM32F411RE] I2S - Keep MCLK (WS) and SCK clocks running.
Hi,I'm using the STM32F411RE device to decode MP3 audio files, i'm sending the decoded data to a MAX98357A amplifier via I2S and DMA, when the SCK signal is removed from the amplifier there's a DC offset at it's output which is causing a distorted au...
Resolved! Are the VSS and AVSS pins internally connected?
Hello community, I have a little doubt. Are all the GND pins internally connected inside the microcontroller? Is the analog reference (AVSS) internally connected with the digital one (VSS)? If it not, how is the isolation between them?I don't know wh...
I'm interested in using the STM32F4xx internal sensor in a deployed product. Any comments on temperature sensor accuracy and calibration are welcome and appreciated.
Per STM32F405/7 and per datasheet DocID022152 Rev 8 (stm32f4xx) ... are the values referred to in datasheet as "Temperature sensor calibration values", at addresses 0x1FFF 7A2C & 0x1FFF 7A2E (see section 5.3.22), actual factory-calibration results th...
