void APP2_Tasks ( void )
{
/* Update the application state machine based
* on the current state */
switch(app2Data.state)
{
case APP2_STATE_INIT:
/* Open the device layer */
app2Data.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0, DRV_IO_INTENT_READWRITE );
if(app2Data.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(app2Data.deviceHandle, APP_USBDeviceEventHandler, 0);
app2Data.state = APP2_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
case APP2_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(app2Data.isConfigured)
{
app2Data.state = APP2_STATE_SCHEDULE_READ;
}
break;
case APP2_STATE_SCHEDULE_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else wait for the current read to complete */
app2Data.state = APP2_STATE_WAIT_FOR_READ_COMPLETE;
if(app2Data.isReadComplete == true)
{
app2Data.isReadComplete = false;
app2Data.readTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
USB_DEVICE_CDC_Read (USB_DEVICE_CDC_INDEX_0,
&app2Data.readTransferHandle, app2Data.readBuffer,
APP_READ_BUFFER_SIZE);
if(app2Data.readTransferHandle == USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID)
{
app2Data.state = APP2_STATE_ERROR;
break;
}
}
break;
case APP2_STATE_WAIT_FOR_READ_COMPLETE:
if(APP_StateReset())
{
break;
}
if(app2Data.isReadComplete == true)
{
// Check for delimiter
int res = APP_CheckForMessage(app2Data.readBuffer);
if(res == MESSAGE_BAD_POINTER)
{
// Do something
break;
}
else if(res == MESSAGE_NO_DELIMITER)
{
strcat(messageBuffer, app2Data.readBuffer);
memset(app2Data.readBuffer, '\0', APP_READ_BUFFER_SIZE);
app2Data.state = APP2_STATE_SCHEDULE_READ;
break;
}
strcat(messageBuffer, app2Data.readBuffer);
// Parse for the command being sent so we can handle it
int command = APP_ParseCommand(messageBuffer);
// Lets build our response message
// First initialize the JSON value and object from parson library
JSON_Value *rootValue = json_value_init_object();
JSON_Object *rootObject = json_value_get_object(rootValue);
char *serializedString = NULL;
// Build response and handle the command
switch(command)
{
// If hello command, respond with discovery packet
case COMMAND_HELLO:
json_object_dotset_string(rootObject, "message.command", "discovery");
json_object_dotset_string(rootObject, "message.discovery_object.title", APP_TITLE);
json_object_dotset_string(rootObject, "message.discovery_object.part_number", APP_PART_NUMBER);
json_object_dotset_string(rootObject, "message.discovery_object.mac_address", appData.macAddress);
json_object_dotset_string(rootObject, "message.discovery_object.firmware_version", APP_FIRMWARE_VERSION);
json_object_dotset_string(rootObject, "message.discovery_object.harmony_version", SYS_VERSION_STR);
json_object_dotset_boolean(rootObject, "message.discovery_object.is_commissioned", appData.isCommissioned);
break;
// If configuration command, respond with ACK/NACK
case COMMAND_CONFIGURE:
{
if(appData.isCommissioned == false)
{
JSON_Value *messageRoot = json_parse_string(messageBuffer);
if(json_value_get_type(messageRoot) != JSONObject)
{
BuildAckNackMessage(rootObject, "nack", "Invalid JSON Object");
break;
}
else
{
JSON_Object *messageObject = json_value_get_object(messageRoot);
if( json_object_dotget_string(messageObject, "message.configuration_object.aws_iot_endpoint_address") != NULL &&
json_object_dotget_string(messageObject, "message.configuration_object.aws_certificate") != NULL &&
json_object_dotget_string(messageObject, "message.configuration_object.aws_certificate_private_key") != NULL )
{
json_object_dotset_string(rootObject, "message.command", "ack");
json_object_dotset_string(rootObject, "message.ack_nack_message", "Writing commission parameters to flash");
sprintf((char *)appData.host, json_object_dotget_string(messageObject, "message.configuration_object.aws_iot_endpoint_address"));
sprintf((char *)appData.clientCert, json_object_dotget_string(messageObject, "message.configuration_object.aws_certificate"));
sprintf((char *)appData.clientKey, json_object_dotget_string(messageObject, "message.configuration_object.aws_certificate_private_key"));
appData.isCommissioned = true;
appData.writeToNVM = true;
}
else
{
BuildAckNackMessage(rootObject, "nack", "Invalid commission parameters");
break;
}
}
}
else
{
BuildAckNackMessage(rootObject, "nack", "Already commissioned");
}
break;
}
case COMMAND_DEBUG_SET:
{
JSON_Value *messageRoot = json_parse_string(messageBuffer);
if(json_value_get_type(messageRoot) != JSONObject)
{
BuildAckNackMessage(rootObject, "nack", "Invalid JSON Object");
break;
}
JSON_Object *messageObject = json_value_get_object(messageRoot);
if(messageObject == NULL)
{
BuildAckNackMessage(rootObject, "nack", "NULL Pointer");
break;
}
BuildAckNackMessage(rootObject, "ack", "Received debug set");
int DebugMessage = DEBUG_UPDATE;
xQueueSendToFront(app2Data.debugQueue, &DebugMessage, 1);
if(json_object_dotget_boolean(messageObject, "message.debug_set_object.set"))
appData.debugSet = true;
else
appData.debugSet = false;
break;
}
case COMMAND_BAD_JSON:
BuildAckNackMessage(rootObject, "nack", "Bad JSON");
break;
case COMMAND_INVALID:
BuildAckNackMessage(rootObject, "nack", "Command Invalid");
break;
default:
BuildAckNackMessage(rootObject, "nack", "Something went wrong");
break;
}
memset(app2Data.writeBuffer, '\0', APP_WRITE_BUFFER_SIZE);
// With our response built, serialize the response into a string
serializedString = json_serialize_to_string(rootValue);
strcpy(app2Data.writeBuffer, serializedString);
// Find length of string and add delimiter to end
app2Data.writeBuffer[strlen(app2Data.writeBuffer)] = '\r';
json_free_serialized_string(serializedString);
// Reset string buffers
memset(app2Data.readBuffer, '\0', APP_READ_BUFFER_SIZE);
memset(messageBuffer, '\0', APP_MESSAGE_BUFFER_SIZE);
app2Data.state = APP2_STATE_SCHEDULE_WRITE;
}
else
{
app2Data.state = APP2_STATE_WAIT_FOR_READ_COMPLETE;
if( uxQueueMessagesWaiting( app2Data.debugQueue ) > 0 )
{
int debugMessageNumber;
xQueueReceive( app2Data.debugQueue, &debugMessageNumber, 1 );
sprintf(app2Data.writeBuffer,
"{"
"\"message\":{"
"\"command\":\"debug\","
"\"debug_object\":{"
"\"board_ip_address\":\"%d.%d.%d.%d\","
"\"aws_iot_endpoint\":\"%s\","
"\"mac_address\":\"%s\","
"\"socket_connected\":%s,"
"\"mqtt_connected\":%s,"
"\"raw_message\":\"%s\""
"}}}\r",
appData.board_ipAddr.v4Add.v[0],
appData.board_ipAddr.v4Add.v[1],
appData.board_ipAddr.v4Add.v[2],
appData.board_ipAddr.v4Add.v[3],
appData.host,
appData.macAddress,
(appData.socket_connected ? "true" : "false"),
(appData.mqtt_connected ? "true" : "false"),
APP_ReturnDebugCodeToString(debugMessageNumber));
app2Data.state = APP2_STATE_SCHEDULE_DEBUG_WRITE;
}
}
break;
case APP2_STATE_SCHEDULE_WRITE:
if(APP_StateReset())
{
break;
}
app2Data.writeTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
app2Data.isWriteComplete = false;
app2Data.state = APP2_STATE_WAIT_FOR_WRITE_COMPLETE;
USB_DEVICE_CDC_Write(USB_DEVICE_CDC_INDEX_0,
&app2Data.writeTransferHandle, app2Data.writeBuffer, strlen(app2Data.writeBuffer),
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
break;
case APP2_STATE_WAIT_FOR_WRITE_COMPLETE:
if(APP_StateReset())
{
break;
}
/* Check if message sent. The isWriteComplete
* flag gets updated in the CDC event handler */
if(app2Data.isWriteComplete == true)
{
app2Data.state = APP2_STATE_SCHEDULE_READ;
}
break;
case APP2_STATE_SCHEDULE_DEBUG_WRITE:
if(APP_StateReset())
{
break;
}
app2Data.writeTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
app2Data.isWriteComplete = false;
app2Data.state = APP2_STATE_WAIT_FOR_DEBUG_WRITE_COMPLETE;
USB_DEVICE_CDC_Write(USB_DEVICE_CDC_INDEX_0,
&app2Data.writeTransferHandle, app2Data.writeBuffer, strlen(app2Data.writeBuffer),
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
break;
case APP2_STATE_WAIT_FOR_DEBUG_WRITE_COMPLETE:
if(APP_StateReset())
{
break;
}
/* Check if message sent. The isWriteComplete
* flag gets updated in the CDC event handler */
if(app2Data.isWriteComplete == true)
{
app2Data.state = APP2_STATE_WAIT_FOR_READ_COMPLETE;
}
break;
case APP2_STATE_ERROR:
break;
default:
break;
}
}
/**********************************************************
* Application tasks routine. This function implements the
* application state machine.
***********************************************************/
void APP_Tasks ( APP_DATA * appData )
{
/* Update the application state machine based
* on the current state */
switch(appData->state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData->deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0,
DRV_IO_INTENT_READWRITE );
if(appData->deviceHandle == USB_DEVICE_HANDLE_INVALID)
{
SYS_ASSERT(false, "Could not open device layer");
appData->state = APP_STATE_ERROR;
break;
}
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventCallBackSet(appData->deviceHandle, APP_USBDeviceEventHandler);
/* Attach the device */
USB_DEVICE_Attach (appData->deviceHandle);
appData->state = APP_STATE_WAIT_FOR_CONFIGURATION;
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData->isConfigured)
{
/* Schedule the first read from CDC function driver */
appData->state = APP_STATE_CHECK_CDC_READ;
appData->isReadComplete = false;
USB_DEVICE_CDC_Read (appData->cdcInstance, &appData->readTransferHandle,
appData->readBuffer, 64);
}
break;
case APP_STATE_CHECK_CDC_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else check if UART has received data */
if(appData->isReadComplete == true)
{
appData->isReadComplete = false;
APP_UART2Write(appData->readBuffer, appData->readLength);
appData->state = APP_STATE_CHECK_UART_TRANSMIT_COMPLETE;
}
else
{
appData->state = APP_STATE_CHECK_UART_RECEIVE;
}
break;
case APP_STATE_CHECK_UART_TRANSMIT_COMPLETE:
/* Check if the UART transmission is complete */
if(!APP_UART2TransmitIsBusy())
{
/* This means UART transmit is done. Schedule the next
* read and go to the next state */
appData->isReadComplete = false;
USB_DEVICE_CDC_Read (appData->cdcInstance, &appData->readTransferHandle,
appData->readBuffer, 64);
appData->state = APP_STATE_CHECK_UART_RECEIVE;
}
case APP_STATE_CHECK_UART_RECEIVE:
if(APP_StateReset())
{
break;
}
/* Check if a character was received on the UART */
if(APP_UART2ReceiveReady())
{
/* Send the character to the CDC function driver */
USB_DEVICE_CDC_Write(0, &appData->writeTransferHandle,
&appData->uartReceivedData, 1,
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
appData->state = APP_STATE_CHECK_CDC_READ;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks (void )
{
switch(appData.state)
{
case APP_STATE_INIT:
/* Open an instance of the device layer */
appData.deviceHandle = USB_DEVICE_Open( 0, DRV_IO_INTENT_READWRITE );
/* Register a callback with device layer to get
* event notification (for end point 0) */
USB_DEVICE_EventCallBackSet(appData.deviceHandle,
APP_USBDeviceEventHandler);
/* Attach the device */
USB_DEVICE_Attach(appData.deviceHandle);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device is configured. The
* isConfigured flag is updated in the
* Device Event Handler */
if(appData.isConfigured)
{
/* Initialize the flag and place a request for a
* output report */
appData.isReportReceived = false;
USB_DEVICE_HID_ReportReceive(appData.hidInstance,
&appData.receiveTransferHandle,
(uint8_t *)&appData.keyboardOutputReport,1);
appData.state = APP_STATE_CHECK_IF_CONFIGURED;
}
break;
case APP_STATE_CHECK_IF_CONFIGURED:
/* This state is needed because the device can get
* unconfigured asynchronously. Any application state
* machine reset should happen within the state machine
* context only. */
if(appData.isConfigured)
{
appData.state = APP_STATE_SWITCH_PROCESS;
}
else
{
/* This means the device got de-configured.
* We reset the state and the wait for configuration */
APP_StateReset();
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
break;
case APP_STATE_SWITCH_PROCESS:
/* Process the switch state and go to the
* next state. */
APP_ProcessSwitchPress(&appData);
appData.state = APP_STATE_CHECK_FOR_OUTPUT_REPORT;
break;
case APP_STATE_CHECK_FOR_OUTPUT_REPORT:
if(appData.isReportReceived == true)
{
/* Update the LED and schedule and
* request */
APP_KeyboardLEDStatus();
appData.isReportReceived = false;
USB_DEVICE_HID_ReportReceive(appData.hidInstance,
&appData.receiveTransferHandle,
(uint8_t *)&appData.keyboardOutputReport,1);
}
appData.state = APP_STATE_EMULATE_KEYBOARD;
break;
case APP_STATE_EMULATE_KEYBOARD:
if(appData.isReportSentComplete)
{
/* This means report can be sent*/
APP_EmulateKeyboard();
appData.isReportSentComplete = false;
USB_DEVICE_HID_ReportSend(appData.hidInstance,
&appData.sendTransferHandle,
(uint8_t *)&appData.keyboardInputReport,
sizeof(KEYBOARD_INPUT_REPORT));
}
appData.state = APP_STATE_CHECK_IF_CONFIGURED;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks ( void )
{
/* Update the application state machine based
* on the current state */
switch(appData.state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0, DRV_IO_INTENT_READWRITE );
if(appData.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
appData.usartHandle = DRV_USART_Open(DRV_USART_INDEX_0,
(DRV_IO_INTENT_EXCLUSIVE|DRV_IO_INTENT_READWRITE|DRV_IO_INTENT_NONBLOCKING));
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(appData.deviceHandle, APP_USBDeviceEventHandler, 0);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData.isConfigured)
{
/* Schedule the first read from CDC function driver */
appData.state = APP_STATE_CHECK_CDC_READ;
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &(appData.readTransferHandle),
appData.readBuffer, APP_READ_BUFFER_SIZE);
}
break;
case APP_STATE_CHECK_CDC_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else check if UART has received data */
if(appData.isReadComplete == true)
{
appData.isReadComplete = false;
DRV_USART_Write(appData.usartHandle, appData.readBuffer, appData.readLength);
USB_DEVICE_CDC_Read (appData.cdcInstance, &appData.readTransferHandle,
appData.readBuffer, APP_READ_BUFFER_SIZE);
for(ii=0; ii<appData.readLength; ii++) {
if (appData.readBuffer[ii] == '\n' || appData.readBuffer[ii] == '\r'){
rx[pos] = 0;
txFlag = 1;
pos = 0;
sscanf(rx,"%d",&qq);
LATAbits.LATA4 = 1;
if (qq>0){
if(qq>500000){
OC2RS = qq-600000;
}
if(qq<500000){
OC1RS = qq-400000;
}
}
}
else {
rx[pos] = appData.readBuffer[ii];
pos++;
}
}
}
appData.state = APP_STATE_CHECK_UART_RECEIVE;
break;
case APP_STATE_CHECK_UART_RECEIVE:
if(APP_StateReset())
{
break;
}
/* Check if a character was received on the UART */
if (txFlag == 1) {
qq = 7;
char len = sprintf(tx,"qq = %d\r\n",qq);
for (ii = 0;ii<len;ii++) {
appData.uartReceivedData[ii]=tx[ii];
}
USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle,
appData.uartReceivedData, len,
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
txFlag = 0;
}
appData.state = APP_STATE_CHECK_CDC_READ;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks ( void )
{
USB_DEVICE_CDC_RESULT writeRequestResult;
//set pwm cycles
//OC1RS=num1*100;
//OC2RS=20000;
OC1RS=30000;
OC2RS=num1*100;
/* Update the application state machine based
* on the current state */
//int writeRequestResult = USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle, message, len, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
switch(appData.state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0, DRV_IO_INTENT_READWRITE );
if(appData.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
appData.usartHandle = DRV_USART_Open(DRV_USART_INDEX_0,
(DRV_IO_INTENT_EXCLUSIVE|DRV_IO_INTENT_READWRITE|DRV_IO_INTENT_NONBLOCKING));
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(appData.deviceHandle, APP_USBDeviceEventHandler, 0);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData.isConfigured)
{
/* Schedule the first read from CDC function driver */
appData.state = APP_STATE_CHECK_CDC_READ;
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &(appData.readTransferHandle),
appData.readBuffer, 64);
}
break;
case APP_STATE_CHECK_CDC_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else check if UART has received data */
if(appData.isReadComplete == true)
{
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &appData.readTransferHandle,
appData.readBuffer, 64);
buffer[0]=appData.readBuffer[0];
if (buffer[1] == 'a') {
if (LATBbits.LATB15 == 0) { //toggle b5
LATBbits.LATB15 =1;
}
else {
LATBbits.LATB15 =0;
}
}
//DRV_USART_Write(appData.usartHandle, appData.readBuffer, appData.readLength);
}
/*
// messages come in one char at a time
// if the char is a newline, then the message is complete
if(appData.readBuffer[0]=='\n'||appData.readBuffer[0]=='\r'){
sscanf(rxbuffer,"%d %d",&num1,&num2);
rxbuffer_index = 0;
// now use num1 and num2 for whatever
}
// otherwise put the char in a buffer and increment the index
else {
rxbuffer[rxbuffer_index] = appData.readBuffer[0];
rxbuffer_index++;
// watch out for running over the buffer
if(rxbuffer_index == 100){
rxbuffer_index = 0;
}
}
*/
//phone CDC
int i = 0;
//char rxbuffer[100];
//int num1; int num2;
for(i=0;i<64;i++) {
rxbuffer[i] = appData.readBuffer[i];
}
sscanf(rxbuffer,"%d %d",&num1,&num2); //this is where the buffer is read in, num1 stores the COM
if (LATBbits.LATB15 == 0) { //toggle b15
LATBbits.LATB5 = 1;
}
if (LATBbits.LATB5 == 1) { //toggle b15
LATBbits.LATB5 = 0;
}
appData.state = APP_STATE_CHECK_UART_RECEIVE;
break;
case APP_STATE_CHECK_UART_RECEIVE:
/*if (LATBbits.LATB15 == 0) { //toggle b15
LATBbits.LATB15 = 1;
}
else {
LATBbits.LATB15 = 0;
}
*/
if(APP_StateReset())
{
break;
}
/* Check if a character was received on the UART */
/*if(DRV_USART_Read(appData.usartHandle, &appData.uartReceivedData, 1) > 0)
{
//* We have received data on the UART
USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle,
&appData.uartReceivedData, 1,
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}*/
int len = 0;
while(message[len]>0){
len++;
}
writeRequestResult = USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle, message, len, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
if(USB_DEVICE_CDC_RESULT_OK != writeRequestResult) {
// turn on another led if there is an error
//LATBbits.LATB15 = 1;
}
else {
// turn off the led if there is not an error
//LATBbits.LATB15 = 0;
}
appData.state = APP_STATE_CHECK_CDC_READ;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks ( void )
{
USB_DEVICE_CDC_RESULT writeRequestResult;
/* Update the application state machine based
* on the current state */
switch(appData.state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0, DRV_IO_INTENT_READWRITE );
if(appData.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
appData.usartHandle = DRV_USART_Open(DRV_USART_INDEX_0,
(DRV_IO_INTENT_EXCLUSIVE|DRV_IO_INTENT_READWRITE|DRV_IO_INTENT_NONBLOCKING));
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(appData.deviceHandle, APP_USBDeviceEventHandler, 0);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData.isConfigured)
{
/* Schedule the first read from CDC function driver */
appData.state = APP_STATE_CHECK_CDC_READ;
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &(appData.readTransferHandle),
appData.readBuffer, 64);
}
break;
case APP_STATE_CHECK_CDC_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else check if UART has received data */
if(appData.isReadComplete == true)
{
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &appData.readTransferHandle,
appData.readBuffer, 64);
int i = 0;
char rxbuffer[100];
int angle; int com1;
for(i=0;i<64;i++) {
rxbuffer[i] = appData.readBuffer[i];
}
sscanf(rxbuffer,"%d %d",&angle,&com1);
float vel=0;
vel=10000-(angle-0)*20;
if (vel<5000)
{
vel=5000;
}
float vel1 = 0;
float vel2 = 0;
float P=0.0;
vel1=vel;
vel2=vel;
float error=320-com1;
if (error>=0)
{
vel1=vel;
vel2=vel-error*300000*10000/(vel1*vel1);
if (vel2<3000)
{
vel2=3000;
}
}
else
{
vel2=vel;
vel1=vel+error*300000*10000/(vel2*vel2);
if (vel1<3000)
{
vel1=3000;
}
}
OC1RS= (int) vel1;
OC2RS= (int) vel2;
}
appData.state = APP_STATE_CHECK_UART_RECEIVE;
break;
case APP_STATE_CHECK_UART_RECEIVE:
if(APP_StateReset())
{
break;
}
/* Check if a character was received on the UART */
// if(DRV_USART_Read(appData.usartHandle, &appData.uartReceivedData, 1) > 0)
// {
// /* We have received data on the UART */
//
// USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle,
// &appData.uartReceivedData, 1,
// USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
//
// }
// sprintf(message,"ritwik \n");
// int len = 0;
// while(message[len]>0){
// len++;
// }
// writeRequestResult = USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle, message, len, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
if(USB_DEVICE_CDC_RESULT_OK != writeRequestResult) {
// turn on another led if there is an error
}
else {
// turn off the led if there is not an error
}
appData.state = APP_STATE_CHECK_CDC_READ;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks ( void )
{
/* Update the application state machine based
* on the current state */
switch(appData.state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0, DRV_IO_INTENT_READWRITE );
if(appData.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
appData.usartHandle = DRV_USART_Open(DRV_USART_INDEX_0,
(DRV_IO_INTENT_EXCLUSIVE|DRV_IO_INTENT_READWRITE|DRV_IO_INTENT_NONBLOCKING));
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(appData.deviceHandle, APP_USBDeviceEventHandler, 0);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData.isConfigured)
{
/* Schedule the first read from CDC function driver */
appData.state = APP_STATE_CHECK_CDC_READ;
appData.isReadComplete = false;
USB_DEVICE_CDC_Read (appData.cdcInstance, &(appData.readTransferHandle),
appData.readBuffer, APP_READ_BUFFER_SIZE);
}
break;
case APP_STATE_CHECK_CDC_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else check if UART has received data */
if(appData.isReadComplete == true)
{
appData.isReadComplete = false;
DRV_USART_Write(appData.usartHandle, appData.readBuffer, appData.readLength);
USB_DEVICE_CDC_Read (appData.cdcInstance, &appData.readTransferHandle,
appData.readBuffer, APP_READ_BUFFER_SIZE);
}
appData.state = APP_STATE_CHECK_UART_RECEIVE;
break;
case APP_STATE_CHECK_UART_RECEIVE:
if(APP_StateReset())
{
break;
}
/* Check if a character was received on the UART */
if(DRV_USART_Read(appData.usartHandle, appData.uartReceivedData, 1) > 0)
{
/* We have received data on the UART */
USB_DEVICE_CDC_Write(0, &appData.writeTransferHandle,
appData.uartReceivedData, 1,
USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
appData.state = APP_STATE_CHECK_CDC_READ;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
/**********************************************************
* Application tasks routine. This function implements the
* application state machine.
***********************************************************/
void APP_Tasks ( APP_DATA * appData )
{
/* Update the application state machine based
* on the current state */
USB_DEVICE_CDC_RESULT result;
APP_ProcessSwitchPress(appData);
switch(appData->state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData->deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0,
DRV_IO_INTENT_READWRITE );
if(appData->deviceHandle == USB_DEVICE_HANDLE_INVALID)
{
SYS_ASSERT(false, "Could not open device layer");
appData->state = APP_STATE_ERROR;
break;
}
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventCallBackSet(appData->deviceHandle, APP_USBDeviceEventHandler);
/* Attach the device */
USB_DEVICE_Attach (appData->deviceHandle);
appData->state = APP_STATE_WAIT_FOR_CONFIGURATION;
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData->isConfigured)
{
/* If the device is configured then lets start reading */
appData->state = APP_STATE_SCHEDULE_READ;
}
break;
case APP_STATE_SCHEDULE_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else wait for the current read to complete */
appData->state = APP_STATE_WAIT_FOR_READ_COMPLETE;
if(appData->isReadComplete == true)
{
appData->isReadComplete = false;
appData->readTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
USB_DEVICE_CDC_Read (appData->cdcInstance, &appData->readTransferHandle,
appData->readBuffer, 64);
if(appData->readTransferHandle == USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID)
{
appData->state = APP_STATE_ERROR;
break;
}
}
break;
case APP_STATE_WAIT_FOR_READ_COMPLETE:
case APP_STATE_CHECK_SWITCH_PRESSED:
if(APP_StateReset())
{
break;
}
/* Check if a character was received or a switch was pressed.
* The isReadComplete flag gets updated in the CDC event handler. */
if(appData->isReadComplete || appData->isSwitchPressed)
{
appData->state = APP_STATE_SCHEDULE_WRITE;
}
break;
case APP_STATE_SCHEDULE_WRITE:
if(APP_StateReset())
{
break;
}
/* Setup the write */
appData->writeTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
appData->isWriteComplete = false;
appData->state = APP_STATE_WAIT_FOR_WRITE_COMPLETE;
if(appData->isSwitchPressed)
{
/* If the switch was pressed, then send the switch prompt*/
appData->isSwitchPressed = false;
result = USB_DEVICE_CDC_Write(appData->cdcInstance, &appData->writeTransferHandle,
switchPrompt, 23, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
else
{
/* Else echo the received character + 1*/
appData->readBuffer[0] = appData->readBuffer[0] + 1;
USB_DEVICE_CDC_Write(appData->cdcInstance, &appData->writeTransferHandle,
appData->readBuffer, 1, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
break;
case APP_STATE_WAIT_FOR_WRITE_COMPLETE:
if(APP_StateReset())
{
break;
}
/* Check if a character was sent. The isWriteComplete
* flag gets updated in the CDC event handler */
if(appData->isWriteComplete == true)
{
appData->state = APP_STATE_SCHEDULE_READ;
}
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
