STM32 MCUs Products

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stm32f051 usart1

Posted on February 25, 2013 at 14:18 Hi, I'm switching from a stm32f100 to the stm32f051, most of the code is working already. but the usart1 does not work. The output doesn't change when I am trying to send something. Here are some snipp...

Confused with USB FIFO Allocation

Posted on February 25, 2013 at 13:01 This is a piece of code from usb_core.c/* set Rx FIFO size */ USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GRXFSIZ, RX_FIFO_FS_SIZE); /* EP0 TX*/ nptxfifosize.b.depth = TX0_FIFO_FS_SIZE; nptxfifosize.b.startaddr = RX_...

dimax by Senior
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  • 2 replies
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STM32F4 slowed down

Posted on February 26, 2013 at 01:13HI ST COMMUNITY, I just wondering why my stm32f4 Discovery board seems to slowed down, I am still using the same program. I've just powered it on as usual and make it do its usual task of capturing data.. Then whe...

xtian by Associate II
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  • 3 replies
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MCO1 output doesn't output anything

Posted on February 21, 2013 at 23:36Hello all,Can someone help me please?I must be doing something wrong because I can't do something so trivial...I'm trying to output HSI over MCO1, it must be something straightforward, but...void cpu_init_mco( voi...

cherobim by Associate
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  • 6 replies
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USB CDC Driver

Posted on February 25, 2013 at 23:52Hello, Can someone inform me whether I can use (or do I need) USB CDC Driver on Windows CE. I am planning to connect STM32F4 Discovery to Cuwin Touch Screen panel which is operated on Windows CE. I checked the 're...

incrementation of a timer : problem

Posted on May 14, 2012 at 17:40hi, i am working on the stm32discovery i am trying to increment a timer (timer2 channel 1) each time the signal on the pin PA.05 is rising but the timer is random incrementing and not at each rising edge of the signa...

claire by Associate III
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  • 11 replies
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writing constants to flash

Posted on February 22, 2013 at 11:48Hi everybody, hi clive1! in an older PIC design, I use to store calibration data in flash. Then, an update can be done with values received via serial. With PIC, the pages to work with are smaller. With STM32F4xx ...

I2C Bus not pulsing after the start condition

Posted on October 31, 2012 at 21:57I am communicating with a slave device and after the generation of the start condition, I am not seeing SCL and SDA pulsing. Below is the code: void DS2482_Init(void){        GPIO_InitTypeDef    GPIO_InitStructure;...

ngoclt by Associate
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  • 3 replies
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STM32f4 SPI

Posted on February 25, 2013 at 02:38HI ST Community I would like to ask if these pins are safe to use spi1 - PA4 - NSS PB5 - MOSI PA6 - MISO PA5 - SCK spi2 PB9  - NSS Pb15 - MOSI pb14 - MISO pb13 - SCK

xtian by Associate II
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stm32f3discovery usb flash support?

Posted on February 24, 2013 at 20:15Hello. Sorry if my question seems stupid. I'm new to all this stuff. So i'm wondering can I plug usb stick to stm32f3discovery and upload information to it? I saw some discussions conserning usb host capabilities ...