32F746GDISCOVERY aka STM32F7 Discovery Board - Page 1
Forum section: electronics / general

author: richard_t
author_rank: Newbie
timestamp: July 03, 2015, 08:49:17 am
content: Details of this dropped into my inbox yesterday:32F746GDISCOVERYCut'n'paste of the specs are:QuoteAvailable from usual suspects, UK price is around 40UKP inc VAT from Farnell.

author: kalhana
author_rank: Contributor
timestamp: July 03, 2015, 10:11:57 am
content: Been waiting for this for ages! Just ordered it for £33 (education pricing)But as always ST disappoints with their very low clock frequencies (216MHz vs 300MHz for Atmel's M7)

author: neslekkim
author_rank: Super Contributor
timestamp: July 03, 2015, 10:13:41 am
content: Got it a couple of days ago..I thought it was demosoftware loaded on the board, but I can't get it to work, only an red blinking led when I power the board through the usb connectors.Guess I need to read a bit more..

author: kalhana
author_rank: Contributor
timestamp: July 03, 2015, 02:53:50 pm
content: Are you sure there's enough power to the board?Some USB ports (or long extension leads) don't provide enough power and can cause a board to continuously reboot on power up.

author: Scrts
author_rank: Frequent Contributor
timestamp: July 03, 2015, 02:59:47 pm
content: Quote from: kalhana on July 03, 2015, 10:11:57 amAnd do you actually need more power? Have you exceeded those 216MHz? It's really difficult to do so and if you do, you need something way much more powerful, like Cortex-A9 or something.

author: picandmix
author_rank: Frequent Contributor
timestamp: July 03, 2015, 04:59:56 pm
content: Quote from: richard_t on July 03, 2015, 08:49:17 amGreat looking board for the price - selling like hot cakes at Farnells UK , over 30 sold just this afternoon...Hard to find on their site with a typical STM code search, just use Farnells order code instead2480961Would love to try one but the software seems so complex, not for the faint hearted .....

author: neslekkim
author_rank: Super Contributor
timestamp: July 03, 2015, 05:02:01 pm
content: Quote from: Scrts on July 03, 2015, 02:59:47 pmI was using an batterybank, but maybe it's not giving enough.I was thinking that they had forgotten to flash it or something (I was under the impression for the quickstart that it should have software inside already for demo)

author: kalhana
author_rank: Contributor
timestamp: July 03, 2015, 05:03:36 pm
content: Quote from: Scrts on July 03, 2015, 02:59:47 pmYes, I use it for real time control applications. I also use the RM46L852 by TI, but that one is not ideal because it has 2 CPUs lock-in-step and is kind of wasteful for my application. Wish it was 2 independent CPUs.Ideally I want an Cortex R series with like 400 MHz and dual core (but can't find anyone selling them).Other options are obviously analog devices DSP lines.

author: kalhana
author_rank: Contributor
timestamp: July 03, 2015, 05:07:30 pm
content: Quote from: neslekkim on July 03, 2015, 05:02:01 pmHaven't received mine yet. But all the previous STM discovery boards I have got had a demo pre-loaded.Not sure why. Try connecting and flashing with the demo project?

author: neslekkim
author_rank: Super Contributor
timestamp: July 03, 2015, 05:14:53 pm
content: Ah, found out, if one use the mini usb, which the jumpers are set to by default, it does not work from powebank or charger, only when connected to an computer, due to usb enumeration. But one need to solder an resistor if mini usb is needed.But the two other micro usb connectors works fine, if you change the jumpers (JP1, page 11 in the manual)

author: andersm
author_rank: Super Contributor
timestamp: July 05, 2015, 01:08:09 am
content: Quote from: kalhana on July 03, 2015, 05:03:36 pmSpansion's Traveo series have single- and dual-core Cortex-R5s, but they only go up to 200MHz.