Search found 266 matches

by Abhishek
Sat Feb 15, 2014 4:54 am
Forum: General Support
Topic: SWD adapter for OpenOCD and ChibiOS/RT RTOS-aware debugging
Replies: 7
Views: 3558

Re: SWD adapter for OpenOCD and ChibiOS/RT RTOS-aware debugg

If I am not wrong, someone had once pointed out that the ST-LINK v2 is capable of debugging any SWD target MCU, not just the STM32.

Could you try and check if you are able to use the ST-LINK v2 for debugging Kinetis also?

Regards
Abhishek
by Abhishek
Sat Feb 15, 2014 4:45 am
Forum: STM32 Support
Topic: I2S/SPI DMA RX from audio chip not firing interrupts
Replies: 14
Views: 6764

Re: I2S/SPI DMA RX from audio chip not firing interrupts

I have observed a similar issue while attempting to read from the on board mic on the F4 Discovery [initially pass through to the on board audio DAC directly]. In my case, the clock starts being supplied as soon as I initialize I2S2 with the configuration, even before I actually enable the DMA strea...
by Abhishek
Sat Feb 08, 2014 7:56 pm
Forum: STM32 Support
Topic: SDIO Conflict with I2S on modded F4 Discovery Board
Replies: 11
Views: 3646

Re: SDIO Conflict with I2S on modded F4 Discovery Board

Indeed. I have a 4.7uH 0805 inductor in series with the MOSFET before the filter capacitors. The audio sounds very good on headphones but I notice some audible hum in my USB Speakers at maximum volume ,the frequency of which varies inversely with the DMA buffer size. I will try and increase the indu...
by Abhishek
Sat Feb 08, 2014 5:25 pm
Forum: STM32 Support
Topic: SDIO Conflict with I2S on modded F4 Discovery Board
Replies: 11
Views: 3646

Re: SDIO Conflict with I2S on modded F4 Discovery Board

My hardware is built wire-wrap. The wires are not quite long from the pinheaders connecting the Discovery board to the microSD connector. I have 47K pull-ups on all pins except SDIO_CK. Now I have put 100E resistors in series with SDIO_D2 and SDIO_CK. The 0.1uF decoupling cap, 10uF capacitor are con...
by Abhishek
Wed Feb 05, 2014 8:11 am
Forum: STM32 Support
Topic: SDIO Conflict with I2S on modded F4 Discovery Board
Replies: 11
Views: 3646

Re: SDIO Conflict with I2S on modded F4 Discovery Board

The issue was of signal integrity. I observed that the SD Card worked fine and concurrently with I2S3 in 1-bit bus mode (by commenting out bus width change part in sdc.c), but problems arose in 4-bit mode. This meant there was maybe some sort of signal crosstalk between PC10, PC12, PB3 and PB5 near ...
by Abhishek
Tue Feb 04, 2014 11:44 am
Forum: STM32 Support
Topic: SDIO Conflict with I2S on modded F4 Discovery Board
Replies: 11
Views: 3646

Re: SDIO Conflict with I2S on modded F4 Discovery Board

I don't think so, SDIO uses STM32_DMA_STREAM_ID(2, 3) while I2S3 TX uses STM32_DMA_STREAM_ID(1, 7).
by Abhishek
Tue Feb 04, 2014 11:20 am
Forum: STM32 Support
Topic: SDIO Conflict with I2S on modded F4 Discovery Board
Replies: 11
Views: 3646

SDIO Conflict with I2S on modded F4 Discovery Board

Hello, In order to be able to use SDIO interface and also I2S3 on a F4 Discovery board, I cut the traces going to the CS43L22 from PC10 and PC12 and connected them to PB3 and PB5 respectively, and appropriately remapped the GPIOs. However I found that I am unable to send data on the I2S3 and simulat...
by Abhishek
Tue Sep 24, 2013 11:25 am
Forum: Development and Feedback
Topic: [DONE] The New STM32F429/F439
Replies: 134
Views: 35091

Re: [TODO] The New STM32F429/F439

Are the STM32F429 discovery boards available now [as samples]?

Regards
Abhishek
by Abhishek
Sat Aug 31, 2013 9:17 pm
Forum: Development and Feedback
Topic: [DONE] The New STM32F429/F439
Replies: 134
Views: 35091

Re: [TODO] The New STM32F429/F439

There are 128 pins broken out on headers available. Clearly, this time they used a 144-pin device, so lesser pin conflicts it seems. But the question is: are they still bundling an audio codec this time? And what is the big black thing below the ST logo? [looks like some sensor] Accelerometer is the...
by Abhishek
Sat Aug 31, 2013 8:00 am
Forum: Development and Feedback
Topic: [DONE] The New STM32F429/F439
Replies: 134
Views: 35091

Re: [TODO] The New STM32F429/F439

Gosh, now that's something :D . The LCD looks like it has a touch screen too.

I want one of these. Hopefully it would be available soon [samples ? ].

Abhishek

PS. Is this the same size as a F4 discovery?

Go to advanced search