stm32f030c8 读pcf8563 - 平头弟

stm32f030c8 读pcf8563

2019-07-14 17:07发布

站内问答 / STM32/STM8

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用STM32f030c8硬件iic 读pcf8563 实时时钟，在初步调试的时候就出现了问题，每次过8s就会week month数据就变了，很有规律，没找出什么原因,求助啊

下面是程序，希望大家给予指正，谢谢。

/*********************************************************************************
Function : InitializeI2cGpio
Description: 初始化i2c的GPIO
Input    : 无
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
static bool InitializeI2cGpio ( unsigned char type )
{
GPIO_InitTypeDef  GPIO_InitStructure;

if( type >= I2Cn )
      return false;

/* Enable SCK and SDA GPIO clocks */
RCC_AHBPeriphClockCmd(ST_I2C_CLK_GPIO_CLK_TABLE[type] | ST_I2C_SDA_GPIO_CLK_TABLE[type] , ENABLE);

GPIO_PinAFConfig(ST_I2C_CLK_GPIO_PORT_TABLE[type], ST_I2C_CLK_SOURCE_TABLE[type], ST_I2C_CLK_AF_TABLE[type]);
GPIO_PinAFConfig(ST_I2C_SDA_GPIO_PORT_TABLE[type], ST_I2C_SDA_SOURCE_TABLE[type], ST_I2C_SDA_AF_TABLE[type]);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;//开漏
GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;//sw
// GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

/* I2C SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = ST_I2C_CLK_PIN_TABLE[type];
GPIO_Init(ST_I2C_CLK_GPIO_PORT_TABLE[type], &GPIO_InitStructure);

/* I2C SDA pin configuration */
GPIO_InitStructure.GPIO_Pin = ST_I2C_SDA_PIN_TABLE[type];
GPIO_Init(ST_I2C_SDA_GPIO_PORT_TABLE[type], &GPIO_InitStructure);

return true;
}

/*********************************************************************************
Function : InitializeI2cConfig
Description: 初始化硬件I2C配置
Input    : clock = true 8M_400k false 8M_100k
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
static bool InitializeI2cConfig ( unsigned char type ,bool clock )
{
I2C_InitTypeDef I2C_InitStructure;

if( type >= I2Cn )
      return false;

/* Enable the I2C periph source*/
// RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);
RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);//48MHZSW
RCC_APB1PeriphClockCmd(ST_I2C_CLK_TABLE[type], ENABLE); //Enable I2C1 Clock
//初始I2C时钟 SW
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
I2C_InitStructure.I2C_DigitalFilter = 0x00;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
if( clock )
   // I2C_InitStructure.I2C_Timing = EE_I2C_8MHZ_400KHZ_TIMING;//晶振修改为8MHZ sw
      I2C_InitStructure.I2C_Timing =  0x30E32E44;//0x00A0184D;//48M-400K
else
      I2C_InitStructure.I2C_Timing = EE_I2C_8MHZ_100KHZ_TIMING;

I2C_Init(ST_I2C_TABLE[type], &I2C_InitStructure);

I2C_Cmd(ST_I2C_TABLE[type], ENABLE);

return true;
}

*********************************************************************************
Function : InitializeI2c
Description: 初始化i2c
Input    : 无
Output    : 无
Return    : 无
Others    :
*********************************************************************************/
void  InitializeI2c ( bool clock )
{
for(unsigned char i=0;i<I2Cn;i++)
{

   InitializeI2cGpio(i);
   InitializeI2cConfig(i , clock );

}
}

上面是初始化硬件IIC，剩下的会在下面跟上

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5条回答

1楼-- · 2019-07-14 22:00

RTC时钟的初始化
void InitializeTimerManage( void )
{
unsigned char config1 = 0x00;
                              /*reg_ctrl1
                                       STOP = 0;SW*/
unsigned char config2 = 0x01;
                                    /*Reg_ctrl2
                                          AIE = 0;
                                          TIE = 1;
                                       TI/TP = 0; SW */
unsigned char timer1 = 0x82;    /*reg_timer
                                 TE = 1
                                 tiemr source clock  = 1 hz*/

unsigned week ;
struct t_rtc_time time ;
struct t_date* p_data = ( struct t_date* )(&(time.week)) ;
struct t_clock* p_clock = ( struct t_clock* )(&(time.sec)) ;
WritePCF8563( PCF8563_REG_CTRL1 , 1 , &config1); //使能RTC
ReadPCF8563( PCF8563_REG_CTRL1 , 1 , &config1);
WritePCF8563( PCF8563_REG_CTRL2 , 1 , &config2);  //使能AIE TIEsw
ReadPCF8563( PCF8563_REG_CTRL2 , 1 , &config2);
WritePCF8563(PCF8563_TIME_CTRL , 1 , &timer1);
   ReadPCF8563(PCF8563_TIME_CTRL , 1 , &timer1);
//读取成功
if( ReadRTCTime( (unsigned char*)&time ) )
{

         memcpy( &time , &const_rtc_time , sizeof(struct t_rtc_time) );

      WriteRTCTime( (unsigned char*)&time );
      ReadRTCTime ( (unsigned char*)&time );
      time.week = week ;

      memcpy( &current_time , &time , sizeof( struct t_rtc_time ) ) ;

}
}

2楼-- · 2019-07-15 00:05

这个是我验证pcf8563时做的代码验证
bool ReadPCF8563( uint32_t offset , uint32_t len , unsigned char* p_data )
{

unsigned char  reg_add ,loop  = 3;
unsigned char  result = false;

while( loop-- )
{
      //读取失败
   //if ( I2CDeviceRecv( &iic_deviece ) )
      if (I2C1_Read_NBytes(PCF8563_I2C_ADDR_READ, 0x02, 7, p_data));

      {
         result = true;
         break;
      }
}

return result;
}

3楼-- · 2019-07-15 04:55

之前用过1768读写8563

4楼-- · 2019-07-15 08:39

精彩回答 2 元偷偷看……

5楼-- · 2019-07-15 14:09

公司不能上QQ

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