PWM Output
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Forum Posts
Max232 level shifter
Posted on July 05, 2013 at 12:02hello i have usb <-> R232 converter and i want to make it receive correct characters from stm32f4 board , so which capacitors i have to use with max232 to realise this ? and thnx :)
LSE not starting when used for RTC
Posted on July 05, 2013 at 13:21 I am trying to use a 768kHz Xtal with 7pF load capacitors with an STM32F050C6. The problem I am having is that I cannot get the XTAL to reliably start up. I have seen it start a few times but most of the time it ...
connecting audio codec to STM32F4 Discovery using I2S
Posted on July 03, 2013 at 11:52Can anyone suggest where I'm going wrong? I'm new to this forum and people seem to be posting longish code fragments, but I apologise if I seem to be posting an inappropriately long question. I can't get I2S comms to ...
STM32F303 op amps
Posted on July 04, 2013 at 11:52I am a bit confused about the F303 op amps. If they can be used in inverting mode won't a positive voltage into the minus input result in a negative output voltage? Of course it won't happen because they are rail to r...
STM32VLDISCOVERY - ADC: unexpected behavior
Posted on June 29, 2013 at 13:24Is it possible to use ADC without configure GPIO for AIN? For example, if the lines below are commented in the program, can ADC still work? // GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; // GPIO_InitSt...
UPGRADING APPLICATION FIRMWARE BY USB STICK
Posted on June 13, 2013 at 17:16HELLO I want to upgrade the fırware of my design by usb stick , I am using the example given with the discovery board where I need a binary image of my Project myproject.BIN, I am using keil so I can generate hex f...
STM32F4xx CAN2 problem
Posted on July 04, 2013 at 15:18Hi,I work with an STM32F405 and i cannot use the CAN2. Now, I do some tests on the discovery board on an STM32F407. And with the same code developed for CAN2 used with CAN1 all seems good. I think, that I have forgott...
Interpretation of TXEIE bit (UART programming)
Posted on July 04, 2013 at 13:33Hi all, The documentation of the ''GetITStatus'' function, as found in the file 'stm32f10x_uasrt.c'', describes the functionality as follows: ''Checks whether the specified USART interrupt has occurred or not.'' H...
STM32F103 Internal Flash Bank2 Access
Posted on May 31, 2013 at 13:57I am working on a project using an STM32F103 with 768K of internal Flash. I can successfully erase and program the first bank of internal Flash, but am having problems with bank2. The problem seems to be that I am havi...
