REGARDING STM32F030F4P6 GPIO configuration.

[chowdaiah]

Posted on July 24, 2014 at 05:13

HI,

I have faced one problem with PORTF pin configuration (PF0,PF1).My GPIO configuration:RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); InitGpio.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_1 ); InitGpio.GPIO_Mode = GPIO_Mode_AF; InitGpio.GPIO_Speed = GPIO_Speed_Level_1; InitGpio.GPIO_OType = GPIO_OType_PP; InitGpio.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOF, &InitGpio);I am not getting any output from those PINs, if i tried normal GPIO configuration also. .please suggest us is there any issue with that configuration.Regards,Chowdaiah

[Tesla DeLorean]

Posted on July 24, 2014 at 05:41

Is this on a Discovery Board? Are there solder bridges related to getting these to header pins?

/* GPIOF Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
/* Configure PF0 and PF1 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOF, &GPIO_InitStructure);

[chowdaiah]

Posted on July 24, 2014 at 07:24

it is not evaluation board , we have build for our small project purpose.

[zzdz2]

Posted on July 24, 2014 at 09:20

Reference manual says these pins are special, looks like there is no point in configuring PF0/1 as alternate function.

RM0360:8.3.13 Using the HSE or LSE oscillator pins as GPIOs       When the HSE or LSE oscillator is switched OFF (default state after reset), the related       oscillator pins can be used as normal GPIOs.       When the HSE or LSE oscillator is switched ON (by setting the HSEON or LSEON bit in the       RCC_CSR register) the oscillator takes control of its associated pins and the GPIO       configuration of these pins has no effect.       When the oscillator is configured in a user external clock mode, only the OSC_IN or       OSC32_IN pin is reserved for clock input and the OSC_OUT or OSC32_OUT pin can still be       used as normal GPIO.

[chowdaiah]

Posted on July 24, 2014 at 10:15I have already initialized same but it is not executed any output.

[zzdz2]

Posted on July 24, 2014 at 15:04

I can set these pins to output without library:

#include <stm32f0xx.h>
 
 RCC->AHBENR |= RCC_AHBENR_GPIOFEN;
GPIOF->OTYPER = 0;
GPIOF->OSPEEDR = 0;
// PF0/1 output
GPIOF->MODER = GPIO_MODER_MODER0_0 | GPIO_MODER_MODER1_0;
// PF0/1 no pull
GPIOF->PUPDR = 0;
GPIOF->BSRR = GPIO_BSRR_BS_0 | GPIO_BSRR_BS_1;

[chowdaiah]

Posted on July 25, 2014 at 10:53

I have tried this one also but it is not working.

[Tesla DeLorean]

Posted on July 25, 2014 at 15:10

May be it's your board or chip, or how the chip is soldered. Do you have multiple boards exhibiting this problem? I don't have any TTSOP20 parts to evaluate.