About ExtSol

ExtSol · 2018-12-23

STM32F407VGT6 -> this controller have 192kb of sram, I create a big byte array have 131832 byte and i got an error in Keil.Any idea why?

ExtSol · 2018-12-19

ExtSol · 2018-12-14

Dear ST Community,The MCU type is: STM32F407VGT6I try to write GPIOx->ODR register with DMA2. The trigger signal is TIM1 update event. I set the timer period frequency is 9Mhz and i measure 4.429Mhz on GPIO pin. Why?here is my code:#include "stm32f4x...

ExtSol · 2018-12-09

Hi All,I use STM32f103C8T6 mcu to control a 5" TFT (480x272) display in direct mode.TIM1 PWM is the 9Mhz pixel clock,TIM2 is the column counter,TIM3 is the row counterand TIM2 channel 2 in compare mode, start SPI DMA transmit once in lineso, the SPI ...

ExtSol · 2018-12-23

So, what happend when i switch on IRAM2?If IRAM2 is off, i cant use all of 128k sram.

ExtSol · 2018-12-23

ExtSol · 2018-12-14

You are right, I was wrong, I'm stupid  Thank you 

ExtSol · 2018-12-09

I found the problem, i not set SSM and SSI bits in CR1.Why setting up? I not use NSS output.

ExtSol · 2018-12-09

I tested the SPE bit. It is low state after power on and the led is not lighting.now i press the reset button on the pcb and led is on, and its working.SET_BIT(SPI1->CR1, SPI_CR1_SPE); //SPI be spi_is_enabled();void spi_is_enabled(){ if(READ_BIT(SPI1...

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