mistake in stm32f4xx.h
Posted on November 16, 2013 at 17:31to be migrated, sourceId: 35463:697285D7-A9CA-445D-B16C-F23BF0E3B1A3 #stm32f4
Forum Posts
SYSCLK
Posted on November 16, 2013 at 17:00I read in system_stm32f4xx.c that after reset, sysclk is 168MHz. I want to creat a function delay 1s.void Delay(void) { uint32_t i; for(i=0; i<0xA037A00; ++i) // A037A00 = 168.000.000 { } }.Who can explain fo...
Timer 5 never counts from zero
Posted on November 16, 2013 at 05:57 #define SYS_CLK 24000000 /* in this example we use SPEED_HIGH = 24 MHz */ #define DELAY_TIM_FREQUENCY 1000000 /* = 1MHZ -> timer runs in microseconds */ /* Enable timer clock - use TIMER5 */ RCC_APB1PeriphC...
stm32f103rb NSS
Posted on November 15, 2013 at 02:58hello,I have a problem about the stm32f103rb. According to the RM0008 reference manual downloaded in your website, I find the description of slave select(NSS) pin management. So the NSS signal can be driven high...
DMA normal mode issue with ADC and USART
Posted on November 16, 2013 at 00:20The original post was too long to process during our migration. Please click on the attachment to read the original post.
USART communicatoin with DMA
Posted on November 15, 2013 at 19:30The original post was too long to process during our migration. Please click on the attachment to read the original post.
GPIO question
Posted on November 15, 2013 at 11:54Hi to everybody, does anyone knows if is it possible to read the pin's state when the GPIO is configured in output mode? I made a quick test, and seems not to be possible.
STM32F4 FreeRTOS and us accuracy delay
Posted on November 13, 2013 at 13:07Hi everyone, I'm currently working on a musical (using midi) project on which i need very precise delay in order to synchronise with other instruments. This delay should be able to be accurate at 1 microsecond. Fo...
DAC & ADC speed help
Posted on November 12, 2013 at 15:54 Hello, I'm coding a real time system based on STM32F427 requiring a lot of ressources and using almost all peripherials (ADC, DAC, SPI, I2aC, USART, USB, SDIO). This is why I want to reduce the ressou...
SPI slave using DMA on STM32F405RG
Posted on November 15, 2013 at 10:31I am working on the SPI communication between PC and STM32F405RG MCU. FTDI chip FT232H serves as a bridge between PC and MCU (USB to SPI converter). FTDI is set to be SPI master and MCU is slave. I am using DMA tr...
