STM32F4 SPI PIN SETTING

rezadjadidi · ‎2016-05-29

Posted on May 29, 2016 at 23:03

HI

I want setting spi peripheral.

IF SCLK POLARITY =1

please guide me MISO and MOSI pins will be PULL UP OR PULL DOWN???

or IF SCLK POLARITY=0

please guide me MISO and MOSI pins will be PULL UP OR PULL DOWN???

THANKS

#stm32f4-spi-pin-setting

Tesla DeLorean · ‎2016-05-29

Posted on May 30, 2016 at 01:32

Clock polarity is unrelated to pull up/down of data pins.

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rezadjadidi · ‎2016-05-30

Posted on May 30, 2016 at 12:16

Hi

in reference manual write:

if sclk polarity=1 sclk pin setting=pull up

now,MOSI and MISO PIN WILL BE PULL UP OR DOWN??

(I CONNECT ADS8329 TI ADC 16 BIT TO STM32F429 DISCO BUT SPI PINS CORUUPT. FIRST CONNECT ADS8329 SUPPLY SO STM32 DISC BOARD SUPPLY.MOSI AND MISO PIN SET TO PULL UP)

thanks