SDL (Simple DirectMedia Layer) is a 3D graphics engine that uses OpenGL or DirectX depending on platform. To use it is straight forward. You will do a few rectangles on screen with little work. I am also working with GDI+ on Windows, so I was stunned as to how slow SDL is to start in comparison.…
Using FSMC (Flexible Static Memory Controller) is straight forward as you set up the FSMC I/O and just access the memory directly. What happens is that FSMC Address and Data pins suddenly start clocking on the pins. But, how do I sample ? I was first looking for some kind of “magical” burst technique in…
<I will upload the pic a bit later … > The M4 Olimex board have two buttons and I accidentally noticed that one of the buttons was loosening. Easy to fix with super-glue to add mechanical support, but would have been even easier to solve if routed a bit more wisely on the PCB. Dealing…
This one is from Olimex and is based on STM32F407 LQFP144. It has Ethernet, TF Card and 4 x 20 headers + Arduino Uno compatible headers. As for the Arduino headers pay notice to the capacitors on the bottom half that will be in the way of most Arduino Shields. Also I am a bit…
This is a STM32F429. It has a 64Mbit SRAM on the back. It uses the larger LQFP176 chip. This was a bit of a surprise because the header is 2.0 pitch making it incompatible with bread-boards.
This dev-hit is from HAOYU Electronics who produce some good, affordable kits. This is a LQFP144 version of STM32F407. This is basically the same as STM32F405 with Ethernet added. This board also have 128Mb Flash and 1Mb SRAM mounted. Again 2.54 pich headers enabling vero-board mounting. My only comment on this kit is that it…
This is another Cortex M4 that is a bit special. It runs on 72Mhz and have far less Flash/SRAM. It do however have 4 x 5Mhz ADC’s, Op amps and 3 x Motor Controllers on chip. Pitch 2.54 dev-kit so it can be mounted on a vero-board. Mounting dual headers on a vero-board is a…
This is one of the official STM32F429 kit’s using a LQFP144 with a LCD display and 64Mbit of SRAM + a ST-Link. You simply connect the USB on the ST-Link and start programming. This one has 2.54 pich headers that is possible to mount on a vero-board.
This is the 10.- USD dev kit for 5LP I spoke of earlier. P&P comes in addition, but I will encourage people to get one of these to play around with because it is not a “normal” ARM MCU. It actually contain two MCU’s as Cypress also add a programer at right. This can be…
Assuming using the external memory bus will work as I hope it also open up the possibility of a low cost 2-4 channel, 8 bit Oscilloscope at 60-100Mhz sampling speed. Using discrete components I should be able to create a high speed ADC etc. This should be sufficient for a 10Mhz Oscilloscope where you have…