STM32 MCUs Products

convert char to double , GPS DATA

Posted on March 20, 2016 at 01:17I'm using the stm32f0 nucleo  and a gps module , I am able to receive data from the gps and i get the string below.                                                                                $GPGGA,000055.600,285...

fsmc timing problem

fsmc timing problem hello my lcd need the ne1 pin in stm32 to be >= 500ns but i see i oscilloscope it's 124ns . i need to make it >= 500ns for my lcd cs pin i want to make NE1 high pulse width more than 500ns here is my timing code hsram1.Instanc...

I'm trying to communicate between the STM32F107VC (master mode) and a TDC GP22 slave chip but came across this issue:I'm expecting to read 0x12 but i always get 0xFF, plese help me my email: amiryal.me@gmail.com

gp22_send_1byte(Power_On_Reset); HAL_Delay(1); gp22_wr_config_reg(0x81, reg_test); HAL_Delay(1); //gp22_send_1byte(init); HAL_SPI_Transmit(&hspi3, &tx, 1, 1); //send tx=0xb5 opcode HAL_Delay(1); ...

Hi every body In STm32f407 discovery board there is LD3985M33R regulator which the output is 3.3v but in schematic that ST has released it is labeled by 3 volt why? I know LD3985M30R output is 3v not LD3985M33R

['F446 documentation] SPDIF-Rx input pins naming/numbering mismatch between DS and RM

Posted on January 18, 2018 at 01:29In STM32F446xC/E DS rev.6, Table 10. STM32F446xx pin and ball descriptions, SPDIF-Rx input pins are named SPDIFRX_IN0, SPDIFRX_IN1, SPDIFRX_IN2, SPDIFRX_IN3.In the same DS, Table 11. Alternate function, the same pi...

IWDG of STM32F103 work in hardware watchdog mode, question

IWDG of STM32F103 work in hardware watchdog mode, by set MCU's option bytes.​My question is "Once the option byte wrote, software need not start the IWDG by code, even after many times reset ( include software reset , PVD reset, IWDG reset) IWDG is ...

QSPI prefix bytes when reading data

Posted on March 15, 2018 at 11:03Hello there, Using the BSP example code I have composed a function for reading data from an external QSPI flash memory. Here it is: https://pastebin.com/ZsGjfDGD I am facing a peculiar problem at the moment. When I r...

iwdg hardware mode not working.

I wanna my design can back to working after EMC shocks.So I plan to use Hardware watchdog , with followed code under ucOS*************************** usrOption = FLASH_GetUserOptionByte(); if( (usrOption&OB_IWDG_SW) != 0) { FLASH_Unlock(); FLASH_Er...

For an STM32F427 / STM32F429 MCU is UART supported with 0.5 Stop Bit and DMA enabled configuration???

I am using an STM32F429FI Nucleo board, and not able to communicate over UART with the confiiguration having 0.5 Stop bits and DMA being enabled.Is this a valid configuration? Data sheet suggests use of 0.5 Stop bits with SmartCard mode does it mean ...