[Linux项目实践] 物联网单板测试之任务五：ZigBee Module之Transfer

完成单板代码

/*任务5：ZigBee无线模块应用*/

ZigBee Module传递信息过程：



1、从节点单板信息结构体：

typedef struct {

uint8_t temp;

uint8_t hum;

uint32_t light;

int8_t x;

int8_t y;

int8_t z;

}BOARD_INFORMATION;

BOARD_INFORMATION node_board_info; //声明节点单板信息结构体

2、初始化单板，调用底层函数接口

void InitPeripheral(void)

{

SystemInit();

GPIOInit();

InitClk();

InitLedFan();

InitSeg7ledKey();

InitUartSPI();

InitLcd();

InitLight();

InitAxis();

InitZigbee();

}

3、从节点单板收集单板传感器各信息： CollectInformation

void CollectInformation(void)

{

CollectTempHumInfo();

CollectLightInfo();

CollectAxisInfo();

}

3.1、 CollectTempHumInfo()

char CollectTempHumInfo(void)

{

char ret;

ret = Read_Temp_Hum(temp, hum); //底层提供读取温度湿度接口函数

return ret;

}

3.2、CollectLightInfo()

void CollectLightInfo(void)

{

lux = light_read(); //底层提供读取光强接口函数

}

3.3、CollectAxisInfo()

void CollectAxisInfo(void)

{

acc_read(&x, &y, &z); //底层提供读取重力感应接口函数

x = x+xoff;

y = y+yoff;

z = z+zoff;

}

4、从节点单板将收集到的传感器信息传递给OLED：ShowInfoToLcd()

void ShowInfoToLcd(void) //将收集的信息按一定的格式显示在OLED上，同样底层提供显示字符串函数可调用

{

ShowTempHumOnLcd();

ShowLightToLcd();

ShowAxisToLcd();

}

4.1、ShowTempHumOnLcd()

void ShowTempHumOnLcd(void)

{

char buf[20];

snprintf(buf, 16, "Temp: %d.%d ", temp);

OLED_DisStrLine(2, 0, (uint8_t *)buf);

snprintf(buf, 16, "Hum: %d.%d ", hum);

OLED_DisStrLine(3, 0, (uint8_t *)buf);

}

4.2、ShowLightToLcd()

void ShowLightToLcd(void)

{

char buf[24];

snprintf(buf, 20, "light: %d ", light);

OLED_DisStrLine(4, 0, (uint8_t *)buf);

}

4.3、ShowAxisToLcd()

void ShowAxisToLcd(void)

{

char buf[24];

snprintf(buf, 20, "Acc x: %d ", x);

OLED_DisStrLine(5, 0, (uint8_t *)buf);

//printf("\r\nAcc x: %d, ", x);

snprintf(buf, 20, "Acc y: %d ", y);

OLED_DisStrLine(6, 0, (uint8_t *)buf);

//printf("Acc y: %d, ", y);

snprintf(buf, 20, "Acc z: %d ", z);

OLED_DisStrLine(7, 0, (uint8_t *)buf);

//printf("Acc z: %d. ", z);

}

5、将从单板收集的信息通过ZigBee传递给主节点单板：SendInfoByZigbee()

void SendInfoByZigbee()

{

char len,i;

node_board_info.x = x; //将从节点单板收集的信息赋值给从节点单板信息结构体

node_board_info.y = y;

node_board_info.z = z;

node_board_info.temp= temp;

node_board_info.hum = hum;

node_board_info.light = light;

ZigBee_PutChar(0xaa); //用作校验位信息

ZigBee_PutChar(0x55); //用作校验位信息

len = sizeof(node_board_info);

for(i=0;i<len;i++){

ZigBee_PutChar(*((uint8_t *)&node_board_info+ i)); //将结构体信息通过ZigBee模块按字节传递给主节点单板

}

}

5.1、ZigBee_PutChar() //ZigBee传递信息函数

void ZigBee_PutChar(uint8_t Ch)

{

SPI752_PutChar(1, Ch); //1、MCU先将信息通过SPI接口传递给U14

}

5.1.1、SPI752_PutChar()

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

* Function Name : SPI752_PutChar

* Description : Use SPI572 channel 0 & 1 send a byte.

* Input : - Channel : 0 & 1.

* - Ch : 8bit data.

* Output : None

* Return : None

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

void SPI752_PutChar(uint8_t Channel, uint8_t Ch)

{

while(!(SPI752_RegRead(Channel, SPI752_LSR_R)&0x20));

SPI752_RegWrite(Channel, SPI752_THR_W, Ch);

}

5.1.1.1、SPI752_RegRead

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

* Function Name : SPI752_RegRead

* Description : Read Registor.

* Input : - Channel : 0 & 1.

* - Reg : 0x00 - 0x0f.

* Output : None

* Return : Registor value.

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

uint8_t SPI752_RegRead(uint8_t Channel, uint8_t Reg)

{

uint8_t rd;

SPI_UART_CS(0); //2、U14将信息通过UART传递给ZigBee模块

SPI_PutGet(1, SPI752_READ | (Reg<<3) | (Channel<<1));

rd = SPI_PutGet(1, 0);

SPI_UART_CS(1);

return rd;

}

5.1.1.1.1、SPI_UART_CS()

#define SPI_UART_CS(x) GPIOSetValue(PORT2, 0, x)

5.1.1.1.2、SPI_PutGet()

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

** Function name: SPI_PutGet

**

** Descriptions: SPI port send & receive

**

** parameters: - portNum

** 0: SPI0

** 1: SPI1

** - SendData, send data

**

** Returned value: - Get data

**

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

uint16_t SPI_PutGet(uint8_t portNum, uint16_t SendData)

{

if(portNum == 0)

{

/* Move on only if NOT busy and TX FIFO not full. */

while((LPC_SSP0->SR & (SSPSR_TNF|SSPSR_BSY)) != SSPSR_TNF);

LPC_SSP0->DR = SendData;

/* Wait until the Busy bit is cleared. */

while(LPC_SSP0->SR & SSPSR_BSY);

/* Wait until the Busy bit is cleared */

while((LPC_SSP0->SR & (SSPSR_BSY|SSPSR_RNE)) != SSPSR_RNE);

return LPC_SSP0->DR;

}

else

{

/* Move on only if NOT busy and TX FIFO not full. */

while((LPC_SSP1->SR & (SSPSR_TNF|SSPSR_BSY)) != SSPSR_TNF);

LPC_SSP1->DR = SendData;

/* Wait until the Busy bit is cleared. */

while(LPC_SSP1->SR & SSPSR_BSY);

/* Wait until the Busy bit is cleared */

while((LPC_SSP1->SR & (SSPSR_BSY|SSPSR_RNE)) != SSPSR_RNE);

return LPC_SSP1->DR;

}

}

5.1.1.2、SPI752_RegWrite()

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

* Function Name : SPI752_RegWrite

* Description : Write 8bit data to Registor.

* Input : - Channel : 0 & 1.

* - Reg : 0x00 - 0x0f.

* - Data : 8bit data.

* Output : None

* Return : None

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

void SPI752_RegWrite(uint8_t Channel, uint8_t Reg, uint8_t Data)

{

SPI_UART_CS(0);

SPI_PutGet(1, SPI752_WRITE | (Reg<<3) | (Channel<<1));

SPI_PutGet(1, Data);

SPI_UART_CS(1);

}

6、从节点单板main.c

int main(void)

{

long i=0;

InitPeripheral();

GPIOSetDir(PORT3, 0, 1); // Set PIO3_0 to output，用LED等做ZigBee传送信息指示灯



ch0 = 0;

ch1 = 0;

init_timer32_a1(1,10000); //初始化定时器

enable_timer32(1); //使能定时器

while(1)

{

if(ch0 >= 2000){ //定时刷新

ch0 = 0;

CollectInformation(); //收集信息

SendInfoToZigbee(); //通过ZigBee传送信息

GPIOSetValue(PORT3, 0, i%2); //LED灯闪动表示ZigBee在传送信息

if(i++ >= 500){

i=0;

}

}

if(ch1 >= 1000){ //OLED的刷新频率低于ZigBee传送的刷新频率

ch1 = 0;

ShowToLcd();

}

}

}

7、主节点单板将从节点单板收集到的信息显示到OLED上

ShowInfoToLcd(void)

void ShowInfoToLcd(void)

{

x = node_board_info.x; //接收ZigBee传递的信息，并show to OLED

y = node_board_info.y;

z = node_board_info.z;

temp = node_board_info.temp;

hum = node_board_info.hum;

light = node_board_info.light;

ShowTempHumOnLcd();

ShowLightToLcd();

ShowAxisToLcd();

}

8、主节点单板将从节点单板收集的信息通过UART传递给主机

void SendInfoByUart()

{

uint8_t rd;

static char idat=0;

if(ZigBee_GetChar(&rd)) //主节点单板通过ZigBee模块接收信息，单板信息循环单字节传送

{

if(idat == 0){

if(rd == 0xaa){ //判断第一个校验码

idat ++;

}

}else if(idat == 1){ //判断第二个校验码

if(rd == 0x55){

idat ++;

} else {

idat = 0; //若检验码不符合，则不接收信息

}

} else {

if(idat < sizeof(node_board_info)+2){ //已经判断前两个校验码OK

*((uint8_t *)&node_board_info+idat-2) = rd; //发送主体信息

if(++idat == sizeof(node_board_info)+2) //从节点单板信息全部传送完成

idat = 0;

}

UART0_PutChar(rd); //通过UART传送，可底层调用

}

}

}

9、主节点单板main.c

int main(void)

{

long i=0;

InitPeripheral(); /*初始化主节点单板收集信息的那些器件*/

ch0 = 0;

ch1 = 0;

GPIOSetDir(PORT3, 0, 1); // Set PIO3_0 to output



init_timer32_a1(1,10000); //同样初始化主节点单板定时器

enable_timer32(1); //使能定时器

while(1)

{

if(ch0 >= 2000){

ch0 = 0;

GPIOSetValue(PORT3, 0, i%2); //LED指示灯

if(i++ == 500){

i=0;

}

}

if(ch1 >= 100){ //定时刷新

ch1 = 0;

ShowToLcd();

}



SendInfoByUart(); //主节点单板将收集到的信息传递给主机服务器

}

}