Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on April 19, 2013 at 16:09Hi,I need to replace a 5V-uC by a 3.3V type and maybe it will be a STM32F0xxx. Now there is one question concerning 5V tolerance: If the 3.3V-uC drives an output that has a pullup resistor to 5V, is that any problem ...
Posted on April 19, 2013 at 05:54I'm working on a project use a F4 MCU. Its clock speed is 168MHZ. The resolution of my LCD is 320 * 480. After some testing, I got some figures. Rendering a full screen by direct accessing LCD controller by MCU can r...
Posted on April 23, 2013 at 07:36Hi,My F4 MCU is running at 2.8V, but I need to use USB OTG FS peripheral.MCU is device mode (peripheral mode) and not bus powered, I only use vbus, for detect dm-dp signals entity.Data is bidirectionalVBus, DM,DPBut,...
Posted on April 17, 2013 at 00:35I'm working with two STM32L151 communicating them via SPI port A-Master and B-Slave. I can only receive data correctly in B-Slave if I switch off transmission but I want full duplex in master and in slave. I can't ei...
Posted on April 23, 2013 at 01:36I am trying to read the device electronic signature in an STM32F40x device while the device is in DFU mode.The signature is 12 bytes, found at 0x1FFF7A10. DFU_DNLOAD (Set Address Pointer) works (or at least returns ...
Posted on April 22, 2013 at 17:19Hi all, I know it was disscused many times over the forum but still I can't get the correct results for the timer setting in PWM mode... Can someone explain to me step by step how to understand timers timing, please?...
Posted on December 28, 2012 at 15:01 #include ''stm32f4xx_conf.h'' #include ''ethernet.h'' #include <stdio.h> #include <string.h> //source IP #define S_IP1 192 #define S_IP2 168 #define S_IP3 1 #define S_IP4 100 //dest IP #define D_IP1 ...
Posted on April 14, 2013 at 12:25Hello all, I've run into the following problem with the program execution. On the STM32f4 Discovery board I've configured two timers with the IRQ routines for measuring two external PWM signals. This works excellentl...
Posted on April 22, 2013 at 16:17 Hi I am trying to read 4 consecutive registers from an EEPROM using I2C through interrupts. The Start Generation is done inside an EXTI interrupt handler after the user button is Pressed. The rest of the read...
Posted on April 19, 2013 at 10:13Hi everybody, I got a strange problem on my USART3 of my STM32F205VE. The UART is working perfectly up to 19200 bauds. With a terminal, I can see my sentences, with the oscilloscope my bit period is OK. I would like ...
