STM32 MCUs products

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STM32 I2C init failed

Posted on April 13, 2012 at 19:09ATTENTION! The following code do not work for STM32 I2C while looking good:void I2C_Ini(void){ I2C_InitTypeDef I2C_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; // I2C RCC RCC_APB1PeriphClockCmd(RCC_APB1Periph_...

ivainc by Associate III
  • 6 replies
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Check if a uC is alive or dead

Posted on April 11, 2012 at 18:39I wonder if someone could help me. I recently have developed my own PCB board. I've soldered all the components, and now I want to starting downloading some firmware to the uC (STM32F407ZG - LQFP144pin). For my surpr...

tecnico23 by Associate II
  • 28 replies
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Doc error TRM STM32F4: PC13..15 only ONE output?

Posted on April 16, 2012 at 09:07In TRM STM32F4 (RM0090) it says in Chapter 4 ''PWR'', 4.1.2 ''Battery...'': Note ''Due to the fact that the switch only sinks a limited amount of current (3 mA), the use of GPIOs PC13 to PC15 are restricted: only one...

flyer31 by Senior
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STM32F4 PWM genertation using TIM1 and TIM8

Posted on April 15, 2012 at 14:51I am using the STM32F4 discovery board to generate a PWM signal using TIMER 1, channel 1, and am using GPIO A8 in AF mode. When i run the code there is no pulse generated, but the pin A8 gets pulled up to Vcc.  The a...

anoop by Associate II
  • 1 replies
  • 0 kudos

SD Bootloader Interrupt Problem

Posted on April 12, 2012 at 17:18Hi,I have written a Bootloader that looks at the micro sd card and loads firmware.bin file into address 0x00800C000 and jumps program execution to 0x00800C004. I have changed the Flash address in the code that is loa...

ADC Sample Time Selection

Posted on April 10, 2012 at 22:18While it is clear how to configure the ADC sample time, the documentation doesn't provide insight into why one might prefer 239.5 cycles over 13.5 cycles, or the impact of selecting 7.5 cycles (I'm guessing 6 bits of...