Lwip stack for Standalone STM32F407VG

Posted on June 06, 2014 at 17:13

There's that and the Ethernet IAP example.

What header files? Isn't LwIP freely available on the interwebs? Can you not just get that and back port or merge the STM32F2/4, and board specific, code?

Posted on June 07, 2014 at 14:16

Hi clive

what you have tried with timer 2 (DMA updating the arr ) I have tried with the timer 5.....for timer 2 is working but why not working for timer 5 when both are having the same features.

Code is pasted below

#include ''unistd.h''

#include ''stm32f4xx.h''

#include ''stm32f4_discovery.h''

#include ''stm32f4xx_tim.h''

#include ''stm32f4xx_rcc.h''

#include ''stm32f4xx.h''

#include <misc.h>

#include ''stm32f4xx_adc.h''

#include ''stm32f4xx_gpio.h''

#include ''stm32f4xx_dac.h''

#include ''stm32f4xx_tim.h''

#include ''stm32f4xx_dma.h''

#include ''stm32f4xx_usart.h''

#include ''stm32f4_discovery.h''

#define SAMPLES 4

uint32_t SampleVector[SAMPLES] = { 200, 300, 3200, 12800 }; // TIM2 32-bit

/**************************************************************************************/

void RCC_Configuration(void)

{

  /* DMA1 (TIM2 on APB1) clock enable */

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);

  /* TIM5 clock enable */

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);

  /* GPIOA clock enable */

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

}

/**************************************************************************************/

void GPIO_Configuration(void)

{

  GPIO_InitTypeDef GPIO_InitStructure;

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; // PA1 TIM5_CH2

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Connect TIM2 pin  */

  GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_TIM5); // PA1 TIM5_CH2

}

/**************************************************************************************/

void DMA_Configuration(void)

{

  DMA_InitTypeDef DMA_InitStructure;

  DMA_DeInit(DMA1_Stream0);

  DMA_InitStructure.DMA_Channel = DMA_Channel_6;

  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&TIM2->ARR;

  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&SampleVector[0];

  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;

  DMA_InitStructure.DMA_BufferSize = SAMPLES;

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; // TIM2 is 32-bit

  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;

  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;

//DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

  DMA_InitStructure.DMA_Priority = DMA_Priority_High;

  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;

  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;

  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;

  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;

  DMA_Init(DMA1_Stream0, &DMA_InitStructure);

  DMA_Cmd(DMA1_Stream0, ENABLE);

}

/**************************************************************************************/

void TIM5_Configuration(void)

{

  TIM_TimeBaseInitTypeDef TIM_InitStruct;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  /* Time base configuration */

  TIM_InitStruct.TIM_Prescaler = 2 - 1;                // This will configure the clock to 32 MHz

  TIM_InitStruct.TIM_CounterMode = TIM_CounterMode_Up; // Count-up timer mode

  TIM_InitStruct.TIM_Period = 200 - 1;                 // 160 KHz initially

  TIM_InitStruct.TIM_ClockDivision = TIM_CKD_DIV1;     // Divide clock by 1

  TIM_InitStruct.TIM_RepetitionCounter = 0;            // Set to 0, not used

  TIM_TimeBaseInit(TIM5, &TIM_InitStruct);

  TIM_ARRPreloadConfig(TIM5, ENABLE);

  /* Output Compare Toggle Mode configuration: Channel2 - so we can actually measure widths */

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle; // 80 KHz

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

  TIM_OCInitStructure.TIM_Pulse = 1;

  TIM_OC2Init(TIM5, &TIM_OCInitStructure);

  /* TIM2 Update Interrupt enable - for whatever purpose, likely to saturate */

  TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE);

  /* TIM2 Update DMA Request enable */

  TIM_DMACmd(TIM5, TIM_DMA_Update, ENABLE);

  /* TIM2 enable counter */

  TIM_Cmd(TIM5, ENABLE);

}

/**************************************************************************************/

void NVIC_Configuration(void)

{

  NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable TIM5 Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

}

/**************************************************************************************/

void TIM5_IRQHandler(void)

{

  if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)

  {

    TIM_ClearITPendingBit(TIM5, TIM_IT_Update);

  STM_EVAL_LEDToggle(LED3);

  }

}

/**************************************************************************************/

int main(void)

{

  RCC_Configuration();

  NVIC_Configuration();

  GPIO_Configuration();

  STM_EVAL_LEDInit(LED3);

  DMA_Configuration();

  TIM5_Configuration();

  while(1); // Don't want to exit

}

/**************************************************************************************/

#ifdef  USE_FULL_ASSERT

/**

  * @brief  Reports the name of the source file and the source line number

  *   where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t* file, uint32_t line)

{

  /* User can add his own implementation to report the file name and line number,

     ex: printf(''Wrong parameters value: file %s on line %d\r\n'', file, line) */

  /* Infinite loop */

  while (1)

  {

  }

}

#endif

Posted on June 07, 2014 at 14:54

If you have a question about Ethernet or LwIP please use this thread, otherwise start another.

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Posted on June 09, 2014 at 07:20

Hi clive,

i searched for  Lwip in interweb but i didn't get it. if u know the link to get Lwip plz post the link so that it can help me to move further.

Regards,

manjunath

Posted on June 09, 2014 at 08:17

i searched for  Lwip in interweb but i didn't get it. if u know the link to get Lwip plz post the link so that it can help me to move further.

Honestly?

http://savannah.nongnu.org/projects/lwip/

http://download.savannah.gnu.org/releases/lwip/

Posted on June 10, 2014 at 06:45

Hi clive,

i got LWIP from 

http://download.savannah.gnu.org/releases/lwip/

 link but when i try to compile using CoIDE ,it gives a error like arch/cc.h and config.h files are not found. where can i get those files? or am i going wrong in procedure ?

 

Posted on June 10, 2014 at 13:24

Hi All,

i got lwip from this 

http://download.savannah.gnu.org/releases/lwip/

 link when i try to compile it, its giving a error like config.h file not found. is this config.h is system file?? how can i get config.h file?

Posted on June 10, 2014 at 16:05

Hi All ,

please help regarding this issue.

Posted on June 10, 2014 at 16:40

Would suggest you review the ''contrib'' related ports, and how the STM32F4 port was achieved.

If there are no compiler/platform issues to address the config.h can be an empty file.

STM32F4x7_ETH_LwIP_V1.0.0\Utilities\Third_Party\lwip_v1.3.2\port\STM32F4x7\arch\sys_arch.h

Posted on June 11, 2014 at 06:57

Hi All,

The error got removed if i place empty config.h file.

Note:: but the thing is i'm using this Lwip for ethernet communication between STM32F407VG and a device, adding empty file like config.h will cause any effect on my communication part? please confirm me.