“玩板”+ 共享单车控制板-时钟芯片PCF8563

chenzhufly 发表于 2020-3-16 13:26

<div class='showpostmsg'>板子左边一个GPS，右边一个GPRS,难度稍微有点大，柿子还是要捡软的捏，先把时钟芯片PCF8563 搞定吧



首先用stm32cube做好管脚配置，PCF8563使用的是I2C1接口

然后从网上找了个PCF8563的驱动：

<pre>
<code>#include "main.h"
#include "pcf8563.h"

I2C_HandleTypeDef *hi2c_pcf8563;
uint8_t Pcf8563Buffer;

void WriteBitToControlRegister(uint8_t ControlRegister, uint8_t BitNumber, uint8_t Value)
{
uint8_t tmp;

if(Value>1) Value = 1;
if(ControlRegister>1) Value = 1;
if(BitNumber>7) Value = 7;

HAL_I2C_Mem_Read(hi2c_pcf8563, PCF8563_ADDRESS, ControlRegister?PCF8563_REG_CONTROL_STATUS1:PCF8563_REG_CONTROL_STATUS2, 1, &tmp, 1, PCF8563_I2C_TIMEOUT);
tmp &= ~(1<<BitNumber);
tmp |= (Value<<BitNumber);
// ControlRegister?(Value &= 0b10101000):(Value &= 0b00011111); // Put zeros where zero is needed
HAL_I2C_Mem_Write(hi2c_pcf8563, PCF8563_ADDRESS, ControlRegister?PCF8563_REG_CONTROL_STATUS1:PCF8563_REG_CONTROL_STATUS2, 1, &Value, 1, PCF8563_I2C_TIMEOUT);
}

void PCF8563_TEST1Enable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL1_TEST1, Enable);
}

void PCF8563_STOPEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL1_STOP, Enable);
}

void PCF8563_TESTCEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL1_TESTC, Enable);
}

void PCF8563_InterruptEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL2_TI_TP, Enable);
}

void PCF8563_AlarmFlagEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL2_AF, Enable);
}

void PCF8563_TimerFlagEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL2_TF, Enable);
}

void PCF8563_AlarmInterruptEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL2_AIE, Enable);
}

void PCF8563_TimerInterruptEnable(uint8_t Enable)
{
WriteBitToControlRegister(PCF8563_REG_CONTROL_STATUS1, PCF8563_CONTROL2_TIE, Enable);
}

void PCF8563_ClkoutFrequency(CLKOUT_Freq Frequency)
{
uint8_t tmp;

if(Frequency>3) Frequency = 3;

HAL_I2C_Mem_Read(hi2c_pcf8563, PCF8563_ADDRESS, PCF8563_REG_CLKOUT, 1, &tmp, 1, PCF8563_I2C_TIMEOUT);
tmp &= ~(3<<PCF8563_CLKOUT_CONTROL_FD0);
tmp |= (Frequency<<PCF8563_CLKOUT_CONTROL_FD0);
HAL_I2C_Mem_Write(hi2c_pcf8563, PCF8563_ADDRESS, PCF8563_REG_CLKOUT, 1, &tmp, 1, PCF8563_I2C_TIMEOUT);
}

uint8_t bcd2dec(uint8_t BCD)
{
return (((BCD & 0xF0)>>4) *10) + (BCD & 0xF);
}

uint8_t dec2bcd(uint8_t DEC)
{
return ((DEC / 10)<<4) + (DEC % 10);
}

int dayofweek(int Day, int Month, int Year)
{
int Y, C, M, N, D;
M = 1 + (9 + Month) % 12;
Y = Year - (M > 10);
C = Y / 100;
D = Y % 100;
N = ((13 * M - 1) / 5 + D + D / 4 + 6 * C + Day + 5) % 7;
return (7 + N) % 7;
}

void PCF8563_SetDateTime(RTCDateTime *DateTime)
{
uint8_t tmp;

if(DateTime->Second > 59) DateTime->Second = 59;
if(DateTime->Minute > 59) DateTime->Minute = 59;
if(DateTime->Hour > 23) DateTime->Hour = 23;
if(DateTime->Day > 31) DateTime->Day = 31;
if(DateTime->Month > 12) DateTime->Month = 12;
if(DateTime->Year> 2099) DateTime->Year = 2099;

tmp = dec2bcd((DateTime->Second) & 0x7F);
tmp = dec2bcd(DateTime->Minute);
tmp = dec2bcd(DateTime->Hour);
tmp = dec2bcd(DateTime->Day);
tmp = dayofweek(DateTime->Day, DateTime->Month, DateTime->Year);
tmp = dec2bcd(DateTime->Month);
tmp = dec2bcd(DateTime->Year - 2000);

HAL_I2C_Mem_Write(hi2c_pcf8563, PCF8563_ADDRESS, PCF8563_REG_TIME, 1, tmp, 7, PCF8563_I2C_TIMEOUT);
}

void PCF8563_CalculateDateTime(RTCDateTime *DateTime)
{
DateTime->Second = bcd2dec((Pcf8563Buffer) & 0x7F);
DateTime->Minute = bcd2dec(Pcf8563Buffer);
DateTime->Hour = bcd2dec(Pcf8563Buffer);
DateTime->Day = Pcf8563Buffer;
DateTime->DayOfWeek = bcd2dec(Pcf8563Buffer + 1); // too keep weekdays in 1-7 format
DateTime->Month = bcd2dec(Pcf8563Buffer & 0x1F);
DateTime->Year = 2000 + bcd2dec(Pcf8563Buffer);
}

#ifdef PCF8563_USE_DMA
void PCF8563_ReceiveDateTimeDMA(void)
{
HAL_I2C_Mem_Read_DMA(hi2c_pcf8563, PCF8563_ADDRESS, PCF8563_REG_TIME, 1, Pcf8563Buffer, 7);
}
#else
void PCF8563_GetDateTime(RTCDateTime *DateTime)
{
HAL_I2C_Mem_Read(hi2c_pcf8563, PCF8563_ADDRESS, PCF8563_REG_TIME, 1, Pcf8563Buffer, 7, PCF8563_I2C_TIMEOUT);

PCF8563_CalculateDateTime(DateTime);
}
#endif

void PCF8563_Init(I2C_HandleTypeDef *hi2c)
{
hi2c_pcf8563 = hi2c;

PCF8563_ClkoutFrequency(CLKOUT_FREQ_1HZ);
PCF8563_STOPEnable(0);
}</code></pre>

 

写了个简单的测试代码：

<pre>
<code>int main(void)
{
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/* MCU Configuration--------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* USER CODE BEGIN Init */

/* USER CODE END Init */

/* Configure the system clock */
SystemClock_Config();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_I2C1_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
/* USER CODE BEGIN 2 */
PCF8563_Init(&hi2c1);

r.Hour = 12;
r.Minute = 30;
r.Second = 0;
PCF8563_SetDateTime(&r);

printf("====pcf8563 test====\n\r");
/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{

PCF8563_GetDateTime(&r);
MessageSize = sprintf(Message, "%02d:%02d:%02d\n\r", r.Hour, r.Minute, r.Second);
HAL_UART_Transmit(&huart2, Message, MessageSize, 1000);

LED1_Toggle;
HAL_Delay(1000);

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}</code></pre>

 



 

SIM800C目前也是有点反应，能够收到和响应AT命令，还在摸索中。。

 

 
 
此内容由EEWORLD论坛网友chenzhufly原创，如需转载或用于商业用途需征得作者同意并注明出处
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threetigher 发表于 2020-3-16 13:40

lz测试一下卡，看看是否还有流量

threetigher 发表于 2020-3-16 13:41

有网友说3个脚是升压电路，这里还有点问号

threetigher 发表于 2020-3-16 13:42

点赞支持！

threetigher 发表于 2020-3-16 20:54

AT有反应了？666

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“玩板”+ 共享单车控制板-时钟芯片PCF8563