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mistake in stm32f4xx.h

Posted on November 16, 2013 at 17:31to be migrated, sourceId: 35463:697285D7-A9CA-445D-B16C-F23BF0E3B1A3 #stm32f4

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...

41003160 by • Associate II
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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...

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...

benoit2 by • Associate II
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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...

milos by • Associate
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