Sending data from ethernet in FRDMK64F?

mehmetak — Wed, 29 Jun 2016 09:17:33 GMT

Hello,

I have FRDK64F microcontroller. I would like to send a data from ethernet when I get the data from RS485. how can I do? Is there sample code or sending data from ethernet? Also, is my rs 485 code correct?

My rs485 code is here;

uint8_t command_t,command_2_1,command_2_2,command_2_3,byte0,byte1,byte2,byte3;

uint8_t receiveState=0;

uint8_t byteCounter=0;

uint8_t command=0;

uint8_t dataLength=0;

uint8_t checksum=0;

uint8_t calculatedChecksum;

uint8_t messageReceivedFlag=0;

uint8_t addresAndMessageType=0;

uint8_t sourceAddress[3];

uint8_t destinationAddress[3];

uint8_t receiveBuffer[50];

int main(void)

{

uart_config_t config;

BOARD_InitPins();

BOARD_BootClockRUN();

* config.baudRate_Bps = 115200U;

* config.parityMode = kUART_ParityDisabled;

* config.stopBitCount = kUART_OneStopBit;

* config.txFifoWatermark = 0;

* config.rxFifoWatermark = 1;

* config.enableTx = false;

* config.enableRx = false;

UART_GetDefaultConfig(&config);

config.baudRate_Bps = BOARD_DEBUG_UART_BAUDRATE;

config.enableTx = true;

config.enableRx = true;

UART_Init(DEMO_UART, &config, CLOCK_GetFreq(DEMO_UART_CLKSRC));

/* Send g_tipString out. */

UART_WriteBlocking(DEMO_UART, g_tipString, sizeof(g_tipString) / sizeof(g_tipString[0]));

/* Enable RX interrupt. */

UART_EnableInterrupts(DEMO_UART, kUART_RxDataRegFullInterruptEnable | kUART_RxOverrunInterruptEnable);

EnableIRQ(DEMO_UART_IRQn);

while (1)

{

if(messageReceivedFlag) // Ben ekledimm.

{

command_t=command;

command_2_1 = receiveBuffer[0];

command_2_2 = receiveBuffer[1];

command_2_3 = receiveBuffer[2];

byte0 = receiveBuffer[3];

byte1 = receiveBuffer[4];

byte2 = receiveBuffer[5];

byte3 = receiveBuffer[6];

messageReceivedFlag=0;

if(command_t==0xf4 && command_2_1==0x52 && command_2_2==0x42 && command_2_3==0x53)

{

}

void DEMO_UART_IRQHandler(void)

{

uint8_t data;

/* If new data arrived. */

if ((kUART_RxDataRegFullFlag | kUART_RxOverrunFlag) & UART_GetStatusFlags(DEMO_UART))

{

data = UART_ReadByte(DEMO_UART);

switch(receiveState)

{

case 0:

if(data==0x00) // local address and message type(2) check

{

addresAndMessageType=0;

calculatedChecksum=0;

receiveState=1;

}

break;

case 1: // Get source address

sourceAddress[byteCounter++]=data;

calculatedChecksum += data;

if(byteCounter==3)

{

receiveState=2;

byteCounter=0;

}

break;

case 2: // Get destination address

destinationAddress[byteCounter++]=data;

calculatedChecksum += data;

if(byteCounter==3)

{

receiveState=3;

byteCounter=0;

}

break;

case 3: // Get command

command=data;

calculatedChecksum += data;

receiveState=4;

break;

case 4: // Get packet lentgh

dataLength=data;

calculatedChecksum += data;

byteCounter=0;

receiveState=5;

break;

case 5: // Get rest of the packet

receiveBuffer[byteCounter++]=data;

calculatedChecksum += data;

if(byteCounter==dataLength)

{

receiveState=6;

}

break;

case 6: // Get checksum and check it

checksum=data;

calculatedChecksum += data;

if(calculatedChecksum == 0xff)

{

messageReceivedFlag=1;

}

receiveState=0;

break;

}

Re: Sending data from ethernet in FRDMK64F?

xiangjun_rong — Thu, 30 Jun 2016 03:13:58 GMT

Hi, Mehmet,

Regarding your question, I suggest you download the SDK2.0 for FRDM-K64F from the website:

Welcome to Kinetis Expert | Kinetis Expert

After you download SDK2.0, you can find the lwip example code located at the directory:

C:\DriverE\Freescale\SDK2.0_K64F\boards\frdmk64f\demo_apps\lwip

We have echo example for both UDP and TCP protocol, if you use the K64 ethernet in client mode, I suppose you have to change the code, because the example is in server mode.

Regarding RS232, we have the UART driver located at :

C:\DriverE\Freescale\SDK2.0_K64F\boards\frdmk64f\driver_examples\uart

Regarding your UART code, I think it is okay.

XiangJun Rong

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Sending data from ethernet in FRDMK64F?

Re: Sending data from ethernet in FRDMK64F?