Search found 26 matches

by jeremie.delaitre
Thu Jan 24, 2013 6:28 pm
Forum: Development and Feedback
Topic: USB Mass Storage Device
Replies: 112
Views: 30485

Re: USB Mass Storage Device

Hi, I am playing a bit with USB Mass Storage and it works out of the box...but I have some questions :) To be noted that I tried everything on a P407 board tweaked to have the SD card operating in SDIO mode instead of SPI. So, when I read/write some files from the micro-SD card (4GB SDHC, FatFS) thr...
by jeremie.delaitre
Thu Jan 24, 2013 10:53 am
Forum: STM32 Support
Topic: STM32P407: usbStart() not working
Replies: 2
Views: 1727

Re: STM32P407: usbStart() not working

Thank you for the hint, and sorry for the late response :)
I've finally got some time to work on this and the problem was elsewhere... I just forgot to initialize properly some event sources...
by jeremie.delaitre
Tue Jan 22, 2013 11:57 am
Forum: User Projects
Topic: STM32F407 flash library
Replies: 10
Views: 9301

Re: STM32F407 flash library

Hi, To use this library will I have to alter my linker and startup file? Did you have any example? Thanks, Wagner Sartori Junior Sorry for the delay, I didn't noticed your message... You don't have to modify your linker script to read/write the flash memory, but it could be a good idea though. For ...
by jeremie.delaitre
Tue Dec 18, 2012 11:49 am
Forum: STM32 Support
Topic: STM32P407: usbStart() not working
Replies: 2
Views: 1727

STM32P407: usbStart() not working

Hi, I'm trying to use the USB OTG (HS) of my Olimex STM32P407 board but calling usbStart(&USBD2, &myconf) never returns. In otg_core_reset() (ChibiOS/os/hal/platforms/STM32/OTGv1/usb_lld.c, line 137), the core reset loop never ends: while ((otgp->GRSTCTL & GRSTCTL_CSRST) != 0) Any idea? ...
by jeremie.delaitre
Mon Dec 10, 2012 6:39 pm
Forum: User Projects
Topic: STM32F407 flash library
Replies: 10
Views: 9301

Re: STM32F407 flash library

I am glad it could be helpful to someone else :) Storing data into internal flash memory is one of my two goals indeed :) However, a think a slightly higher level API could be use to ease that but it is quite application specific. This is mainly due to the f407 fancy flash memory layout with sectors...
by jeremie.delaitre
Mon Dec 10, 2012 2:34 pm
Forum: User Projects
Topic: STM32F407 flash library
Replies: 10
Views: 9301

STM32F407 flash library

Hi, I finally had time to "finish" a flash library for the STM32F407. The code is available at: https://github.com/tegesoft/flash-stm32f407 The library allows to erase sectors and read/write data. A helper function allows to flash an IHex file (almost like in the original mabl's work). The...
by jeremie.delaitre
Mon Dec 10, 2012 1:38 pm
Forum: General Support
Topic: Howto saving Data in Flash in Cortex M3/M4
Replies: 25
Views: 11293

Re: Howto saving Data in Flash in Cortex M3/M4

Hi ! I finally had time to "finish" the flash library for the STM32F407. The code is available at: https://github.com/tegesoft/flash-stm32f407 The library allows to erase sectors and read/write data. A helper function allows to flash an IHex file (almost like in the original mabl's work). ...
by jeremie.delaitre
Wed Nov 21, 2012 9:28 am
Forum: General Support
Topic: Howto saving Data in Flash in Cortex M3/M4
Replies: 25
Views: 11293

Re: Howto saving Data in Flash in Cortex M3/M4

I found the flash programming manual yesterday with all the needed info. I've started to port the p107 bootloader to the p407 but it still a work in progress. I'll publish the code when it'll be ready as I will appreciate any comment on the code since I'm not used to embedded programming yet :) More...
by jeremie.delaitre
Mon Nov 19, 2012 4:26 pm
Forum: General Support
Topic: Howto saving Data in Flash in Cortex M3/M4
Replies: 25
Views: 11293

Re: Howto saving Data in Flash in Cortex M3/M4

@mobyfab: thanks for the tips :) Using wear leveling seems to be a good idea even if the user should not change the settings that often! @mabl: I've looked at your code and it seems quite clear indeed. I'm trying to port it to the STM32F407 but some registers are gone (for example the FLASH->AR) and...

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