About boris2

boris2 · 2014-09-11

Posted on September 11, 2014 at 19:35 I'm trying to get SPI1 up and running with STM32F4 as a master. This was the source code / tutorial. The only changes are: MOSI is on pin PB5 instead of PA6 in the example and CS is on PA4 instead of P...

boris2 · 2014-09-10

Posted on September 10, 2014 at 16:44I have developed a simple application to test GPIOs, SPI, UART on the STM32F4 Discovery dev board (a modified demo application from the included Discovery demo V1.1.0). The demo application uses the STM32F4xx_Std...

boris2 · 2014-09-11

Posted on September 11, 2014 at 20:31Figured out the problem.I needed to enable the GPIOB clock BEFORE configuring GPIOB5 pin.RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

boris2 · 2014-09-11

Posted on September 11, 2014 at 16:32How did the 192MHz number come up?I've included a screen shot of the clock config tool.Shouldn't the HSE_VALUE match the actual oscillator frequency or you are saying that the UART library only expects a 8MHz ext...

boris2 · 2014-09-10

Posted on September 10, 2014 at 21:15Thanks for the reply. I used the ST excel clock configuration tool and got PLL M = 17, N=340, APB1 prescaler = 1, APB2 prescaler =1.Having setup a UART1 to run at 57600 bps I get a UART rate of ~139kHz on the sc...

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SPI1 Almost working but no MOSI?

Transitioning from STM32 discovery to custom board (clock settings?)

Re: SPI1 Almost working but no MOSI?

Re: Transitioning from STM32 discovery to custom board (clock settings?)

Re: Transitioning from STM32 discovery to custom board (clock settings?)