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mapping input to output exactly

#include "stm32f0xx.h"
#include "stm32f0308_Discovery.h"

#define in0 GPIO_Pin_0
#define in1 GPIO_Pin_1
#define in2 GPIO_Pin_2
#define in3 GPIO_Pin_3
#define in4 GPIO_Pin_4
#define in5 GPIO_Pin_5
#define in_GPIO GPIOA

#define out0 GPIO_Pin_0
#define out1 GPIO_Pin_1
#define out2 GPIO_Pin_2
#define out3 GPIO_Pin_3
#define out4 GPIO_Pin_4
#define out5 GPIO_Pin_5
#define out_GPIO GPIOC

void TM_Delay_Init(void);
void TM_DelayMillis(uint32_t millis);
void TM_DelayMillis1(uint32_t millis);
void TM_DelayMillis2(uint32_t millis);

GPIO_InitTypeDef GPIO_InitStructure ;

uint32_t multiplier;

int main(void)
{
                SystemInit();
                SystemCoreClockUpdate();
                TM_Delay_Init();


                RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
                RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);


/* Configure PA in input mode */
                GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0)|(GPIO_Pin_1);
                GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
                GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
                GPIO_Init(GPIOA, &GPIO_InitStructure);

/* Configure PC15 - PC0 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(GPIOC, &GPIO_InitStructure);


while(1)
        {
                if(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)==1)
                        {

                                GPIO_SetBits(out_GPIO,out0);
                                TM_DelayMillis(7);
                                GPIO_ResetBits(out_GPIO,out0);


                        }

                        while (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)==1)
                        {
                                GPIO_SetBits(out_GPIO,out0);
                                TM_DelayMillis(3);
                                GPIO_ResetBits(out_GPIO,out0);
                                TM_DelayMillis2(22);
}}}

void TM_DelayMillis(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 100 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}


void TM_DelayMillis1(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 1 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}


void TM_DelayMillis2(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 1 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}


void TM_Delay_Init(void) {
    RCC_ClocksTypeDef RCC_Clocks;

    /* Get system clocks */
    RCC_GetClocksFreq(&RCC_Clocks);

    /* While loop takes 4 cycles */
    /* For 1 us delay, we need to divide with 4M */
    multiplier = RCC_Clocks.HCLK_Frequency / 4000000;
}

Note:kindly make for many pins such that when i given in0 my out0 should be high all other pins low such that when i give my in1 my out1 should be high all other low. vice versa.

Parents

0 Westonsupermare Pier over 8 years ago

Your description infers some non-direct mapping, with priority, but whatever

// For the chronically clueless and lazy

#include "stm32f0xx.h"

#define in0 GPIO_Pin_0
#define in1 GPIO_Pin_1
#define in2 GPIO_Pin_2
#define in3 GPIO_Pin_3
#define in4 GPIO_Pin_4
#define in5 GPIO_Pin_5
#define in_GPIO GPIOA

#define out0 GPIO_Pin_0
#define out1 GPIO_Pin_1
#define out2 GPIO_Pin_2
#define out3 GPIO_Pin_3
#define out4 GPIO_Pin_4
#define out5 GPIO_Pin_5
#define out_GPIO GPIOC

int main(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  SystemInit(); // Doesn't Keil with CMSIS do this already?
  SystemCoreClockUpdate();

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOC, ENABLE);

  /* Configure PA in input mode */
  GPIO_InitStructure.GPIO_Pin = in0 | in1 | in2 | in3 | in4 | in5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(in_GPIO, &GPIO_InitStructure);

  /* Configure PC in output pushpull mode */
  GPIO_InitStructure.GPIO_Pin = out0 | out1 | out2 | out3 | out4 | out5;
  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(out_GPIO, &GPIO_InitStructure);

  while(1)
  {
    uint16_t invec, outvec;

    invec = in_GPIO->IDR;

    outvec = 0;

    if (invec & in0)
      outvec = out0;
    else if (invec & in1)
      outvec = out1;
    else if (invec & in2)
      outvec = out2;
    else if (invec & in3)
      outvec = out3;
    else if (invec & in4)
      outvec = out4;
    else if (invec & in5)
      outvec = out5;

    out_GPIO->ODR = (out_GPIO->ODR & ~(out0 | out1 | out2 | out3 | out4 | out5)) | outvec;
  }
}

Reply

0 Westonsupermare Pier over 8 years ago

Your description infers some non-direct mapping, with priority, but whatever

// For the chronically clueless and lazy

#include "stm32f0xx.h"

#define in0 GPIO_Pin_0
#define in1 GPIO_Pin_1
#define in2 GPIO_Pin_2
#define in3 GPIO_Pin_3
#define in4 GPIO_Pin_4
#define in5 GPIO_Pin_5
#define in_GPIO GPIOA

#define out0 GPIO_Pin_0
#define out1 GPIO_Pin_1
#define out2 GPIO_Pin_2
#define out3 GPIO_Pin_3
#define out4 GPIO_Pin_4
#define out5 GPIO_Pin_5
#define out_GPIO GPIOC

int main(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  SystemInit(); // Doesn't Keil with CMSIS do this already?
  SystemCoreClockUpdate();

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOC, ENABLE);

  /* Configure PA in input mode */
  GPIO_InitStructure.GPIO_Pin = in0 | in1 | in2 | in3 | in4 | in5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(in_GPIO, &GPIO_InitStructure);

  /* Configure PC in output pushpull mode */
  GPIO_InitStructure.GPIO_Pin = out0 | out1 | out2 | out3 | out4 | out5;
  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(out_GPIO, &GPIO_InitStructure);

  while(1)
  {
    uint16_t invec, outvec;

    invec = in_GPIO->IDR;

    outvec = 0;

    if (invec & in0)
      outvec = out0;
    else if (invec & in1)
      outvec = out1;
    else if (invec & in2)
      outvec = out2;
    else if (invec & in3)
      outvec = out3;
    else if (invec & in4)
      outvec = out4;
    else if (invec & in5)
      outvec = out5;

    out_GPIO->ODR = (out_GPIO->ODR & ~(out0 | out1 | out2 | out3 | out4 | out5)) | outvec;
  }
}

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