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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...
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...
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...
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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...
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...
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...
Posted on November 14, 2013 at 15:35please help me
Posted on November 13, 2013 at 01:03Hello experts,I'm trying to get SPI with DMA running on my STM32F3board. So I wrote this code after a tutorial and the StdPeriph Lib. To test the SPI parameters I wanted to send a 16 bit value and watch on the bu...
