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48/72mhz, PLL*6/PLL*9, with source code

Posted on September 28, 2012 at 00:13 Hi, first of all thanks for reading this! This is assembly code (gnu arm) for setting up the ST32F103 to make sound out the DAC. It works in 48mhz PLL mode, but not in What follows is the complete progra...

pete2399 by Associate II
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  • 7 replies
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STM32F4 Firmware upgrade

Posted on September 22, 2012 at 20:19I have found a few examples of how to update the firmware on a STMF4. The first one you needed to use a usb memory stick and the second one you had to reset the microcontroller and put the boot pins in the correc...

russdx by Associate II
  • 4746 Views
  • 9 replies
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STM32F0 sleep or standby mode excessive consumption

Posted on September 27, 2012 at 11:26Hi, I use the STM32F0 Discovery. I disconnect jump JP2 and connect ammeter. I build a simple program in IAR: int main() {   DWORD i;   UINT16 j;     SystemInit();   SystemCoreClockUpdate();   init_hardware();  ...

STM32F107RC - Very low external resistor on NRST pin

Posted on June 03, 2011 at 23:59Hi, I want to build circuit with STM32F107RC. I projected PCB and chcek all wires with any avaluation kit board. When I turn power on all circuit take about 9 mA. I chcecked all power supply pins aroud microcontroller...

How to store web pages in microcontroller flash

Posted on September 26, 2012 at 14:37Hello all, I am doing a project where the microcontroller (STM32) is sending the parameters to the server via DHCP using wifi module. So, now i want to make available an offline web page to the user where he will...

bikash by Associate II
  • 3049 Views
  • 10 replies
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STM32 standard bootloader question

Posted on September 28, 2012 at 09:25Hi all,I need to be able to reprogram an STM32F103 device in the field through a USB connection on UART1. It is critical that the firmware update is performed without any direct user intervention on the board (ap...

gosal by Associate III
  • 1943 Views
  • 7 replies
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Problem with STM32F407 RAM

Posted on April 20, 2012 at 09:21I have recently assembled 6 PCBs with STM32F407IGT6 micros on them. I seem to be having a problem reading from RAM. This was first noticed when one of the boards was hard faulting and returning a non-precise bus erro...

jforrest by Associate
  • 3313 Views
  • 21 replies
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Super real-time application optimization

Posted on September 28, 2012 at 19:28Hello,  I've been wondering about upgrading to the STM32 from an ST10.  It's imperative that certain thing are as close to instantaneous as possible.  I was thinking I've identified two bottlenecks and two soluti...

drobison by Associate II
  • 842 Views
  • 5 replies
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STM32F TIM8 PWM

Posted on September 26, 2012 at 18:20Hello!I'm trying to get an STM32F407 with the LQFP176 Pinout to output in OC PWM1 mode.  My code is as follows:  /* set up GPIO as timer output GPIOI 5, TIM 8 CH 1*/    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOI...

IIR functions in DSP libraries (STM32F407xx)

Posted on September 28, 2012 at 19:08Dear colleagues,          are there any stable libraries for IIR (recursive) filters for the STM32F4x, aside of the CMSIS DSP software library? The CMSIS has only lattice (arm_iir_lattice***) or biquad (arm_biqua...