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Does USB OTG Require Pullup on DP line?

Posted on November 02, 2015 at 05:02 Does the Discovery board use pull-up or pull-down resistors on the USB OTG? Schematic says it doesn't, the USB standard says it's required. Any guesses? Thanks...

stm32 spi

Posted on November 10, 2015 at 11:26Hi.I am tying to connect my STM32F4 (or F1) with external ADC. Data from ADC can be received by SPI after ADC set ''ready'' flag.So the task for controller is to read by SPI 16 bit data on external event.The easie...

STM32F103R8T6 SWD problem

Posted on November 01, 2015 at 08:19Hello everyone,I am making PCB with STM32F103R8T6 but I have problem with SWD. I connect PCB with ST Link Mini via SWD SWCLK <--> PA14SWDIO <--> PA13RST <--> NRSTSWIM <--> PB3GND <--> VCC3V3 <--> VDDIn Keil, it ca...

thanhnt by • Associate
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SDIO/SDMMC DMA request mapping

Posted on November 09, 2015 at 18:23Hi, I have recently got my SD card running on an STM32F7 with the SDMMC (with DMA) and came across one issue. The DMA request mapping in the Reference Manual (Table 25. DMA2 request mapping) indicates two streams ...

Verification of CPU Load

Posted on November 05, 2015 at 16:48Hi, I try to measure the CPU load of my STM32F429I-Discovery board. I tried the approach described on http://stm32f4-discovery.com/2015/05/cpu-load-monitor-for-stm32f4xx/. This shows me a CPU utilization of 99% in...

smrtkai by • Senior
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C vs. assembly

Posted on November 07, 2015 at 21:15Hi. I'm interested in that how you are programming - in C or in assembly language?What are really benefits of assembly in contrast to C? Speed of code execution probably? How much faster it is, if you compare the ...

matic by • Associate III
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HAL_Delay(100) ?

Posted on November 09, 2015 at 22:59Guys, Is HAL_Delay(100) = Delay for 100ms ? Thanks

STM32L476 USB OTG

Posted on November 09, 2015 at 19:09I am designing a breakout (stamp) board for this controller and I am a bit confused about the hardware configuration of the USB OTG section. Can the VUSB be 5 V, the standard voltage from any USB source? If I want...

onehorse by • Associate II
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