Posted on January 17, 2013 at 10:19I want to sample 1Mhz signal from stm32F4 discovery using ADC1 channel 7. I get 100Khz sample fine, but above it, sampling is not proper. how can I increase sampling rate or what can be the problem? #ampling-rat...
Posted on November 17, 2013 at 19:06Hello,I am using GNU ARM gcc version 4.7.4 to compile a simple LED flasher using STM32_USB-FS-Device_Lib_V4.0.0. I am getting the following error: -I/AddIns/Development/STMicro/STM32_USB-FS-Device_Lib_V4.0.0/Libr...
Posted on November 18, 2013 at 00:11The device selection says 2 USART, The datasheet says:'1 x USART supporting master synchronous SPI and modem control; one with ISO7816 interface, LIN, IrDA capability auto baud rate detection and wakeup feature'Bu...
Posted on November 15, 2013 at 16:35I have a rather simple problem. Just trying to run the external interrupt on pin PA0 on stmf4-discovery without the library functions. It ran correctly on simulation trial using stm32f103 device. But I'm missing o...
Posted on November 17, 2013 at 15:14HiI am using an STM32 in a project as a Virtual Com Port, everything is working really well, however i would like the Virtual Com Port to appear with a custom Device Description in Windows device manager. Would an...
Posted on November 17, 2013 at 00:24Hello :)I want a timer to execute ISR all 4 ms but for academic reasons (interest) I want it as accurate as possible. So I chose TIM_Prescaler = 0 and TIM_ClockDivision = 0.Is there anything else that could increa...
Posted on November 16, 2013 at 19:21So far from the help here (mainly clive1) I got my timers running, GPIO initialized and some demo code running. The device I am trying to control is not recognizing the data I am trying to send to it so I dug a l...
Posted on November 16, 2013 at 17:31to be migrated, sourceId: 35463:697285D7-A9CA-445D-B16C-F23BF0E3B1A3 #stm32f4
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...
