Posted on February 14, 2016 at 21:24
Hi,
i write bootloader with sdcard upgrade option. During first bootloader start (after power on, or MCU programming using stm-vldiscovery programmer) everything works well.
When I restart MCU using N...
Posted on April 22, 2014 at 10:50
Hi,
i have problems with usart communication with other cpu. I use stm32f150rb, UART4. My code:
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, EN...
Posted on January 10, 2014 at 10:46
Hi,
I use STM32 vl-discovery in my project. I've connected and configured USART1 + DMA1 with informations and code from this forum.
Application almost works, but all data in DMA memory receive buffer...
Posted on February 15, 2016 at 13:53NRST pin connection schema: http://imgur.com/JuNdAK1 There is no R1 resistor on board. There is no connection made with JP2. Reset done using S1 switch also creates problems with SPI CLK pin. Are there some requ...
Posted on February 15, 2016 at 11:46I think problem is not with SD Card state. 1. Reseting MCU with st-link solves the problem. During such reset SD card is not being reseted. 2. MCU works as SPI master. There is not clock signal on line after rese...
Posted on January 10, 2014 at 13:56
What exacly is missing?
Applications works exactly in the same way when i use UART2 without DMA:
int i = 0;
while (1) {
while (USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET);
DMA_GPS_IN_B...
