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Forum Posts

Interrupts are not occurring in order

Posted on April 03, 2013 at 16:55 Hi! All, I have a reed switch based Wind Speed and wind direction sensor(anemometer), these two reed switches(one for wind speed and another for direction) are connected to pull ups so that it generates the d...

The best way to compare two buffers

Posted on March 30, 2013 at 10:49Hello, I�m begineer in programming in C and microcontrollers, so I�m sorry for stupid question. I receive commands via USART. What is the best way to compare RxBuffer with command saved in memory? Now I use comparing...

j3lda by Associate II
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SysTick_CALIB, What does it do??

Posted on April 05, 2013 at 01:35Using the STM32L152RB....So I know that the value stored in the SysTick_CALIB register is the value that must be loaded into SysTick_LOAD in order for the ticker interrupts to have a delay of 10ms (as stated in onlin...

F2/F4 I2S Ext.Clock

Posted on April 03, 2013 at 14:19Hi friends, It is written at ref/man for F2 and F4:Bit 7:0 I2SDIV: I2S Linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Why ''0'' is forbidden is clear, but why ''1'' ?! I make some intensi...

Using RTC to show time on LCD

Posted on April 04, 2013 at 11:52Hello,I'm new to embedded programming and having a hard time getting into using the STM32L-Discovery. I'm trying to use the RTC to display time on the LCD on the board, I've been reading the documentation but haven't...

Best TCP/IP Stack for STM32F2

Posted on April 03, 2013 at 21:46HI, I'm going to extend my project with TCP/IP stack. What do you think is a best choice for TCP/IP stack. Currently I'm hesitating between lwIP and uIP.  I'm developing under yagarto. Currently my code runs FreeRTO...

dimax by Senior
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Timer problem

Posted on April 05, 2013 at 03:40Hi guysI want to do an experience with stm32f4.I want to simulate AM(amplitude modulation).I want to use 168 MHz as a carrier and generate the data in 100 khz. and modulate this 2 waves together.this action like i pu...

imanpakii by Associate III
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JTAG Boundary Scan with ScanExpress

Posted on April 04, 2013 at 22:17My company uses a nifty tool called ScanExpress that takes your netlist, parts list, and BSDL files for the JTAG chain and creates an automated test using the Boundary scan to see if all the connections are correct. ...

wmoyne by Associate II
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Missing ADC Codes on STM32F1 / ADC3

Posted on April 04, 2013 at 17:37Hi all,      When I supply 2 of my ADC inputs with 3V ramp/triangle/sine waves, it seems that values from 1024 - 1048 are reporting as 1023.  There is another smaller ''dead band'' from 1087 up to 1092.  Everything e...

diydsp by Associate
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