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Best declaration of array of strings

Posted on July 14, 2012 at 17:09Hi all, I am developping an application on 16K RAM device and I am facing limitation of RAM size so I want to optimize the definition of the following pointer to strings and I want to  know if I am well understanding ...

NVIC interupt nesting and the SCB->ICSR register

Posted on July 16, 2012 at 23:46I use the ICSR register inside an interrupt service routine to determine which vector was used.  I use the low 9 bits to identify the currently active interrupt. I'm not clear on what happens to the ICSR if nested int...

STM32F205RBT6 Alternate function mapping

Posted on July 16, 2012 at 12:02Hello, Can someone please explain to me how the alternate function mapping works? I found the alternate mapping table in the datasheet but how to read it. What is the default location of peripherals. For example by d...

spi interrupt problem for lsm330dl

Posted on July 09, 2012 at 12:33i try to use the spi interrupt , but the whole program just hanged at case 101 which is in the void GYRO_Task(void),  it shows me ''+++''. anything wrong? here is some part of my code.  #ifdef GYRO_SPI_USE_INTERRUPT  ...

Conflict with two EEPROM

Posted on July 06, 2012 at 10:02Hi, With a STM32, I have a problem to select either EEPROM (M24LR64-R and M24M02-DR) on the same bus I2C. Here are the ''device select code'': For M24LR64-R:  1 0 1 0     X 1  1 X In the order:  1 0 1 0 = Device ...

does debugging erases data eeprom?

Posted on July 15, 2012 at 12:07Hi, I am using the discovery board (stm32l) using gcc and the gdbserver from Atollic. My program can erase the data eeprom and write some new values in it, However when I start a new debug session the contents seems t...

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USB Host Firmware and STM32 - Pay or Free

Posted on July 11, 2012 at 15:39 Hello ALL We have already completed a project with the STM32F It took some time to get up to speed but eventually we did, and completed a complex project. Now we have a project which could work with a s...

ADC Library Problem Fixed

Posted on July 14, 2012 at 14:22I have been griping about a problem in the Std Peripheral Library whereby a ADC common init structure was not completely initialized in the examples provided. The most recent F4 library Version V1.0.1 dated 28 Decembe...

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