1056|1

412

帖子

3

TA的资源

纯净的硅(高级)

楼主
 

【STM32F723 Discovery Kit】SPI驱动W5500模块ping网络 [复制链接]

这篇来学习下使用STM32F723 Discovery Kit开发板SPI方式驱动W5500模块,实现ping网络。

 

一、硬件电路

测试接口使用PMOD的SPI2,在使用这个接口时,要使用PMOD_SEL_0和PMOD_SEL_1来切换接口功能。

 

硬件连接图

 

二、程序

 

部分驱动程序

2.1、spi.c

#include "main.h"
#include "spi/spi.h"

SPI_HandleTypeDef hspi2;

void init_spi(void)
{
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	
	__HAL_RCC_SPI2_CLK_ENABLE();
	__HAL_RCC_GPIOI_CLK_ENABLE();
	__HAL_RCC_GPIOH_CLK_ENABLE();
	
	/**SPI1 GPIO Configuration
	PI3     ------> SPI2_MOSI
	PI2     ------> SPI2_MISO
	PI1     ------> SPI2_SCK
	*/
	GPIO_InitStruct.Pin = GPIO_PIN_3 | GPIO_PIN_2 | GPIO_PIN_1;
	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
	GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
	HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
	
	//PH15  ----> PMOD_SEL_0
	//PI10  ----> PMOD_SEL_1
	GPIO_InitStruct.Pin = GPIO_PIN_15;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
	HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
	
	GPIO_InitStruct.Pin = GPIO_PIN_10;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
	HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
	
	HAL_GPIO_WritePin(GPIOH, GPIO_PIN_15, GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOI, GPIO_PIN_10, GPIO_PIN_RESET);

	hspi2.Instance = SPI2;
  hspi2.Init.Mode = SPI_MODE_MASTER;
  hspi2.Init.Direction = SPI_DIRECTION_2LINES;
  hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH;
  hspi2.Init.CLKPhase = SPI_PHASE_2EDGE;
  hspi2.Init.NSS = SPI_NSS_SOFT;
  hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
  hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi2.Init.CRCPolynomial = 7;
  hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  hspi2.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  if (HAL_SPI_Init(&hspi2) != HAL_OK)
  {
  }               
}

 

2.2、w5500_conf.c

w5500模块驱动部分,主要在这个文件中修改

/**
******************************************************************************
* [url=home.php?mod=space&uid=1307177]@File[/url] w5500_conf.c                                                                                              
* [url=home.php?mod=space&uid=252314]@version[/url] V1.2										  		
* [url=home.php?mod=space&uid=311857]@date[/url] 2017-11-01								 
* [url=home.php?mod=space&uid=159083]@brief[/url] ÓÃ3.5.0°æ±¾¿â½¨µÄ¹¤³ÌÄ£°å						  	
* [url=home.php?mod=space&uid=1020061]@attention[/url] ÅäÖÃMCU£¬ÒÆÖ²w5500³ÌÐòÐèÒªÐ޸ĵÄÎļþ£¬ÅäÖÃw5500µÄMACºÍIPµØÖ· 																								 
******************************************************************************
*/


#include <stdio.h> 
#include <string.h>
#include "w5500_conf.h"
//#include "bsp_spi_flash.h"
#include "utility.h"
#include "w5500.h"
#include "dhcp.h"
//#include "bsp_TiMbase.h"

extern SPI_HandleTypeDef hspi2;

CONFIG_MSG  ConfigMsg;																	/*ÅäÖýṹÌå*/
EEPROM_MSG_STR EEPROM_MSG;															/*EEPROM´æ´¢ÐÅÏ¢½á¹¹Ìå*/

/*MACµØÖ·Ê××Ö½Ú±ØÐëΪżÊý*/
/*Èç¹û¶à¿éW5500ÍøÂçÊÊÅä°åÔÚͬһÏÖ³¡¹¤×÷£¬ÇëʹÓò»Í¬µÄMACµØÖ·*/
uint8 mac[6]={0x00,0x08,0xdc,0x11,0x11,0x11};

/*¶¨ÒåĬÈÏIPÐÅÏ¢*/
uint8 local_ip[4]={192,168,1,25};												/*¶¨ÒåW5500ĬÈÏIPµØÖ·*/
uint8 subnet[4]={255,255,255,0};												/*¶¨ÒåW5500ĬÈÏ×ÓÍøÑÚÂë*/
uint8 gateway[4]={192,168,1,1};													/*¶¨ÒåW5500ĬÈÏÍø¹Ø*/
uint8 dns_server[4]={114,114,114,114};									/*¶¨ÒåW5500ĬÈÏDNS*/

uint16 local_port=8080;	                    						/*¶¨Òå±¾µØ¶Ë¿Ú*/

/*¶¨ÒåÔ¶¶ËIPÐÅÏ¢*/
uint8  remote_ip[4]={192,168,1,160};										/*Ô¶¶ËIPµØÖ·*/
uint16 remote_port=8080;																/*Ô¶¶Ë¶Ë¿ÚºÅ*/

/*IPÅäÖ÷½·¨Ñ¡Ôñ£¬Çë×ÔÐÐÑ¡Ôñ*/
uint8  ip_from=IP_FROM_DEFINE;				

uint8  dhcp_ok=0;																				/*dhcp³É¹¦»ñÈ¡IP*/
uint32 ms=0;																						/*ºÁÃë¼ÆÊý*/
uint32 dhcp_time= 0;																		/*DHCPÔËÐмÆÊý*/
vu8    ntptimer = 0;																		/*NPTÃë¼ÆÊý*/

/**
*@brief		ÅäÖÃW5500µÄIPµØÖ·
*@param		ÎÞ
*[url=home.php?mod=space&uid=784970]@return[/url] ÎÞ
*/
void set_w5500_ip(void)
{	
		
  /*¸´Öƶ¨ÒåµÄÅäÖÃÐÅÏ¢µ½ÅäÖýṹÌå*/
	memcpy(ConfigMsg.mac, mac, 6);
	memcpy(ConfigMsg.lip,local_ip,4);
	memcpy(ConfigMsg.sub,subnet,4);
	memcpy(ConfigMsg.gw,gateway,4);
	memcpy(ConfigMsg.dns,dns_server,4);
	if(ip_from==IP_FROM_DEFINE)	
		printf(" ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500:\r\n");
	
	/*ʹÓÃEEPROM´æ´¢µÄIP²ÎÊý*/	
	if(ip_from==IP_FROM_EEPROM)
	{
		/*´ÓEEPROMÖжÁÈ¡IPÅäÖÃÐÅÏ¢*/
		//read_config_from_eeprom();		
		
		/*Èç¹û¶ÁÈ¡EEPROMÖÐMACÐÅÏ¢,Èç¹ûÒÑÅäÖã¬Ôò¿ÉʹÓÃ*/		
		if( *(EEPROM_MSG.mac)==0x00&& *(EEPROM_MSG.mac+1)==0x08&&*(EEPROM_MSG.mac+2)==0xdc)		
		{
			printf(" IP from EEPROM\r\n");
			/*¸´ÖÆEEPROMÅäÖÃÐÅÏ¢µ½ÅäÖõĽṹÌå±äÁ¿*/
			memcpy(ConfigMsg.lip,EEPROM_MSG.lip, 4);				
			memcpy(ConfigMsg.sub,EEPROM_MSG.sub, 4);
			memcpy(ConfigMsg.gw, EEPROM_MSG.gw, 4);
		}
		else
		{
			printf(" EEPROMδÅäÖÃ,ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500,²¢Ð´ÈëEEPROM\r\n");
			//write_config_to_eeprom();	/*ʹÓÃĬÈϵÄIPÐÅÏ¢£¬²¢³õʼ»¯EEPROMÖÐÊý¾Ý*/
		}			
	}

	/*ʹÓÃDHCP»ñÈ¡IP²ÎÊý£¬Ðèµ÷ÓÃDHCP×Óº¯Êý*/		
	if(ip_from==IP_FROM_DHCP)								
	{
		/*¸´ÖÆDHCP»ñÈ¡µÄÅäÖÃÐÅÏ¢µ½ÅäÖýṹÌå*/
		if(dhcp_ok==1)
		{
			printf(" IP from DHCP\r\n");		 
			memcpy(ConfigMsg.lip,DHCP_GET.lip, 4);
			memcpy(ConfigMsg.sub,DHCP_GET.sub, 4);
			memcpy(ConfigMsg.gw,DHCP_GET.gw, 4);
			memcpy(ConfigMsg.dns,DHCP_GET.dns,4);
		}
		else
		{
			printf(" DHCP×Ó³ÌÐòδÔËÐÐ,»òÕß²»³É¹¦\r\n");
			printf(" ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500\r\n");
		}
	}
		
	/*ÒÔÏÂÅäÖÃÐÅÏ¢£¬¸ù¾ÝÐèҪѡÓÃ*/	
	ConfigMsg.sw_ver[0]=FW_VER_HIGH;
	ConfigMsg.sw_ver[1]=FW_VER_LOW;	

	/*½«IPÅäÖÃÐÅϢдÈëW5500ÏàÓ¦¼Ä´æÆ÷*/	
	setSUBR(ConfigMsg.sub);
	setGAR(ConfigMsg.gw);
	setSIPR(ConfigMsg.lip);
	
	getSIPR (local_ip);			
	printf(" W5500 IPµØÖ·   : %d.%d.%d.%d\r\n", local_ip[0],local_ip[1],local_ip[2],local_ip[3]);
	getSUBR(subnet);
	printf(" W5500 ×ÓÍøÑÚÂë : %d.%d.%d.%d\r\n", subnet[0],subnet[1],subnet[2],subnet[3]);
	getGAR(gateway);
	printf(" W5500 Íø¹Ø     : %d.%d.%d.%d\r\n", gateway[0],gateway[1],gateway[2],gateway[3]);
}

/**
*@brief		ÅäÖÃW5500µÄMACµØÖ·
*@param		ÎÞ
*@return	ÎÞ
*/
void set_w5500_mac(void)
{
	memcpy(ConfigMsg.mac, mac, 6);
	setSHAR(ConfigMsg.mac);	/**/
	memcpy(DHCP_GET.mac, mac, 6);
}

/**
*@brief		ÅäÖÃW5500µÄGPIO½Ó¿Ú
*@param		ÎÞ
*@return	ÎÞ
*/
void gpio_for_w5500_config(void)
{
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	
	__HAL_RCC_GPIOI_CLK_ENABLE();
	__HAL_RCC_GPIOF_CLK_ENABLE();
	__HAL_RCC_GPIOB_CLK_ENABLE();
//PI0 ----> ETH_CS
	GPIO_InitStruct.Pin = GPIO_PIN_0;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
	HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
	
	//PF11 ----> ETH_RST
	GPIO_InitStruct.Pin = GPIO_PIN_11;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
	HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
	
	//PB11 ----> ETH_INT
	GPIO_InitStruct.Pin = GPIO_PIN_11;
	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
	
	HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_SET);
}

/**
*@brief		W5500ƬѡÐźÅÉèÖú¯Êý
*@param		val: Ϊ¡°0¡±±íʾƬѡ¶Ë¿ÚΪµÍ£¬Îª¡°1¡±±íʾƬѡ¶Ë¿ÚΪ¸ß
*@return	ÎÞ
*/
void wiz_cs(uint8_t val)
{
	#ifdef  STM32_SPI1
		if (val == LOW) 
		{
			GPIO_ResetBits(GPIOA, GPIO_Pin_4); 
		}
		else if (val == HIGH)
		{
			GPIO_SetBits(GPIOA, GPIO_Pin_4); 
		}
	#endif
	#ifdef STM32_SPI2
		if (val == LOW) 
		{
			HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_RESET);
		}
		else if (val == HIGH)
		{
			HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_SET);
		}
	#endif
}

/**
*@brief		ÉèÖÃW5500µÄƬѡ¶Ë¿ÚSCSnΪµÍ
*@param		ÎÞ
*@return	ÎÞ
*/
void iinchip_csoff(void)
{
	wiz_cs(LOW);
}

/**
*@brief		ÉèÖÃW5500µÄƬѡ¶Ë¿ÚSCSnΪ¸ß
*@param		ÎÞ
*@return	ÎÞ
*/
void iinchip_cson(void)
{	
   wiz_cs(HIGH);
}

/**
*@brief		W5500¸´Î»ÉèÖú¯Êý
*@param		ÎÞ
*@return	ÎÞ
*/
void reset_w5500(void)
{
	HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_RESET);
  delay_us(50);  
	HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_SET);
  delay_us(50);
}

uint8_t SPI_FLASH_SendByte(uint8_t byte)
{
	u8 temp = 0;

	HAL_SPI_TransmitReceive(&hspi2,&byte,&temp,1,1000);
  return temp;
}

/**
*@brief		STM32 SPI1¶Áд8λÊý¾Ý
*@param		dat£ºÐ´ÈëµÄ8λÊý¾Ý
*@return	ÎÞ
*/
uint8  IINCHIP_SpiSendData(uint8 dat)
{
	return(SPI_FLASH_SendByte(dat));
}



/**
*@brief		дÈëÒ»¸ö8λÊý¾Ýµ½W5500
*@param		addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   data£ºÐ´ÈëµÄ8λÊý¾Ý
*@return	ÎÞ
*/
void IINCHIP_WRITE( uint32 addrbsb,  uint8 data)
{
	iinchip_csoff();                              		
	IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);	
	IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
	IINCHIP_SpiSendData( (addrbsb & 0x000000F8) + 4);  
	IINCHIP_SpiSendData(data);                   
	iinchip_cson();                            
}

/**
*@brief		´ÓW5500¶Á³öÒ»¸ö8λÊý¾Ý
*@param		addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   data£º´ÓдÈëµÄµØÖ·´¦¶ÁÈ¡µ½µÄ8λÊý¾Ý
*@return	ÎÞ
*/
uint8 IINCHIP_READ(uint32 addrbsb)
{
	uint8 data = 0;
	
	//printf(" addrbsb=%x\r\n",addrbsb);
	iinchip_csoff();                            
	IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
	IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
	IINCHIP_SpiSendData( (addrbsb & 0x000000F8))    ;
	data = IINCHIP_SpiSendData(0x00);            
	iinchip_cson();                               
	return data;    
}

/**
*@brief		ÏòW5500дÈëlen×Ö½ÚÊý¾Ý
*@param		addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   buf£ºÐ´Èë×Ö·û´®
*@param   len£º×Ö·û´®³¤¶È
*@return	len£º·µ»Ø×Ö·û´®³¤¶È
*/
uint16 wiz_write_buf(uint32 addrbsb,uint8* buf,uint16 len)
{
	uint16 idx = 0;
	if(len == 0) printf(" Unexpected2 length 0\r\n");
	iinchip_csoff();                               
	IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
	IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
	IINCHIP_SpiSendData( (addrbsb & 0x000000F8) + 4); 
	for(idx = 0; idx < len; idx++)
	{
		IINCHIP_SpiSendData(buf[idx]);
	}
	iinchip_cson();                           
	return len;  
}

/**
*@brief		´ÓW5500¶Á³ölen×Ö½ÚÊý¾Ý
*@param		addrbsb: ¶ÁÈ¡Êý¾ÝµÄµØÖ·
*@param 	buf£º´æ·Å¶ÁÈ¡Êý¾Ý
*@param		len£º×Ö·û´®³¤¶È
*@return	len£º·µ»Ø×Ö·û´®³¤¶È
*/
uint16 wiz_read_buf(uint32 addrbsb, uint8* buf,uint16 len)
{
  uint16 idx = 0;
  if(len == 0)
  {
    printf(" Unexpected2 length 0\r\n");
  }
  iinchip_csoff();                                
  IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
  IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
  IINCHIP_SpiSendData( (addrbsb & 0x000000F8));    
  for(idx = 0; idx < len; idx++)                   
  {
    buf[idx] = IINCHIP_SpiSendData(0x00);
  }
  iinchip_cson();                                  
  return len;
}

/**
*@brief		дÅäÖÃÐÅÏ¢µ½EEPROM
*@param		ÎÞ
*@return	ÎÞ
*/
void write_config_to_eeprom(void)
{
	//uint16 dAddr=0;
	//ee_WriteBytes(ConfigMsg.mac,dAddr,(uint8)EEPROM_MSG_LEN);				
	//delay_ms(10);																							
}

/**
*@brief		´ÓEEPROM¶ÁÅäÖÃÐÅÏ¢
*@param		ÎÞ
*@return	ÎÞ
*/
void read_config_from_eeprom(void)
{
	//ee_ReadBytes(EEPROM_MSG.mac,0,EEPROM_MSG_LEN);
	//delay_us(10);
}

/**
*@brief		STM32¶¨Ê±Æ÷2³õʼ»¯
*@param		ÎÞ
*@return	ÎÞ
*/
void timer2_init(void)
{
//	TIM2_Configuration();																		/* TIM2 ¶¨Ê±ÅäÖà */
//	TIM2_NVIC_Configuration();															/* ¶¨Ê±Æ÷µÄÖжÏÓÅÏȼ¶ */
//	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 , ENABLE);		/* TIM2 ÖØпªÊ±ÖÓ£¬¿ªÊ¼¼Æʱ */
}

/**
*@brief		dhcpÓõ½µÄ¶¨Ê±Æ÷³õʼ»¯
*@param		ÎÞ
*@return	ÎÞ
*/
void dhcp_timer_init(void)
{
  //timer2_init();
	init_tim();	
}

/**
*@brief		ntpÓõ½µÄ¶¨Ê±Æ÷³õʼ»¯
*@param		ÎÞ
*@return	ÎÞ
*/
void ntp_timer_init(void)
{
  //timer2_init();
	init_tim();	
}

/**
*@brief		¶¨Ê±Æ÷2ÖжϺ¯Êý
*@param		ÎÞ
*@return	ÎÞ
*/

//void timer2_isr(void)
void timer2_hdl(void)
{
  ms++;	
  if(ms>=1000)
  {  
    ms=0;
    dhcp_time++;			/*DHCP¶¨Ê±¼Ó1S*/
	#ifndef	__NTP_H__
	ntptimer++;				/*NTPÖØÊÔʱ¼ä¼Ó1S*/
	#endif
  }

}
/**
*@brief		STM32ϵͳÈí¸´Î»º¯Êý
*@param		ÎÞ
*@return	ÎÞ
*/
void reboot(void)
{
//  pFunction Jump_To_Application;
//  uint32 JumpAddress;
  printf(" ϵͳÖØÆôÖÐ......\r\n");
//  JumpAddress = *(vu32*) (0x00000004);
//  Jump_To_Application = (pFunction) JumpAddress;
//  Jump_To_Application();
}

 

 

2.3、main.c

#include "main.h"
#include "led/led.h"
#include "delay/delay.h"
#include "key/key.h"
#include "usart/usart.h"
#include "sram/sram.h"
#include "STM32F723E-Discovery/stm32f723e_discovery_lcd.h"  
#include "STM32F723E-Discovery/stm32f723e_discovery_qspi.h"
#include "i2c/i2c.h"
#include "spi/spi.h"
#include "tim/tim.h"
#include "w5500_conf.h"
#include "w5500.h"
#include "ping.h"

static void MPU_Config(void);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);

int main(void)
{
	uint16_t i=0;
	uint8_t txbuf[10];
	uint8_t rxbuf[10];
	
	HAL_Init();
  MPU_Config();					/* Configure the MPU attributes */
  CPU_CACHE_Enable();		/* Enable the CPU Cache */
  
  SystemClock_Config();	/* Configure the system clock to 216 MHz */
	delay_init(216);
	led_init();
	usart_init(115200);	
	init_spi();
	BSP_LCD_Init();
	
	gpio_for_w5500_config();
	reset_w5500();	
	PHY_check();													   
  set_w5500_mac();											 
  set_w5500_ip();												 
	socket_buf_init(txsize, rxsize);			 
	
	printf(" 应用程序执行中......\r\n"); 

	LED5(0);                                           
  LED6(1);
	BSP_LCD_Clear(LCD_COLOR_RED);
  while (1)
  {
		do_ping();
		if(req>=4)
		{
			close(SOCK_PING);									 
			break;
		}			
  }
}

 

2.4、w5500源码

Ethernet.rar (33.77 KB, 下载次数: 3)

 

 

三、程序运行

 

3.1、ping网络

 

3.2、运行中串口输出

 

 

此帖出自stm32/stm8论坛

最新回复

谢谢分享,学习了。。。   详情 回复 发表于 2023-11-6 09:50
点赞 关注
 

回复
举报

24

帖子

7

TA的资源

一粒金砂(中级)

沙发
 

谢谢分享,学习了。。。

此帖出自stm32/stm8论坛
 
 

回复
您需要登录后才可以回帖 登录 | 注册

随便看看
查找数据手册?

EEWorld Datasheet 技术支持

相关文章 更多>>
关闭
站长推荐上一条 1/10 下一条

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 国产芯 安防电子 汽车电子 手机便携 工业控制 家用电子 医疗电子 测试测量 网络通信 物联网

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved
快速回复 返回顶部 返回列表