About Don Starr

Don Starr · 2017-10-28

Posted on October 28, 2017 at 21:00 Custom board based on STM32F429ZI with Microchip USB3300-EZK HS PHY. The clocks and USB connections modeled on the STM32429I-EVAL1 schematic. I've verified that the CubeMX-generated code for my board looks just...

Don Starr · 2017-05-20

Posted on May 20, 2017 at 23:09I have an STM32429I-EVAL1 board. I have these working happily:* microSD at 25MHz with 4-bit interface, using DMA* USB OTG HS as an MSC device* FatFs talking to SDIO with 8-10 MB/s throughput (write/read)* USB (from Win...

Don Starr · 2017-10-30

Posted on October 30, 2017 at 13:41I'll answer anyway Yes, it (verifying that HAL_GPIO_Init() works) was worth those clicks/glances. Prior to my original question, I'd already stepped through in the debugger, examining every line of the executed cod...

Don Starr · 2017-10-29

Posted on October 29, 2017 at 16:59 Thanks for the reply. No oscilloscope handy, but connecting a logic analyzer (1M ohm, 10pF) to the ULPI_CK input (USB3300's CLKOUT pin) does not show a 60MHz clock present. That's probably where my problem l...

Don Starr · 2017-05-21

Posted on May 21, 2017 at 19:44Thanks. Yeah, I forgot about the 48MHz limit imposed by USB. My above '25MHz' was based on looking at one clock cycle in my cheap logic analyzer (10ns sample interval) - it looked like 40ns, or 25MHz. Looking at the ti...

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STM32F429ZI HS USB: USB_CoreReset() timing out waiting for CSRST == 0

STM32429I-EVAL1: SDIO at 50MHz?

Re: STM32F429ZI HS USB: USB_CoreReset() timing out waiting for CSRST == 0

Re: STM32F429ZI HS USB: USB_CoreReset() timing out waiting for CSRST == 0

Re: STM32429I-EVAL1: SDIO at 50MHz?