extern "C" void USART3_IRQHandler(void) {
uint8_t b;
// Is it a RX interrupt?
if (USART_GetITStatus(EVAL_COM1, USART_IT_RXNE) != RESET) {
/* Read one byte from the receive data register */
b = USART_ReceiveData(EVAL_COM1) & 0x7F;
if (rx_buffer.push(b) == false) {
// This is bad.
}
// If this is a command end, increment the rdy command count
if (b == '$') {
commands_count++;
}
}
// Is it a TX interrupt?
if (USART_GetITStatus(EVAL_COM1, USART_IT_TXE) != RESET) {
// Pop an element from the tx queue
uint8_t elem = 0;
if (tx_buffer.pop(elem) == false) {
// This is also bad
return;
}
/* Write one byte to the transmit data register */
USART_SendData(EVAL_COM1, elem);
// If the tx queue is empty, turn TX interrupt off
if (tx_buffer.is_empty()) {
USART_ITConfig(EVAL_COM1, USART_IT_TXE, DISABLE);
}
}
}
bool uart_recieve(uint8_t &elem) {
// Nothing to recieve?
if (rx_buffer.is_empty()) {
return false;
}
// Pop the recieved element.
return rx_buffer.pop(elem);
}
bool uart_send(uint8_t elem) {
// try to push the elem to the tx queue. will not work if its full
bool pushed = tx_buffer.push(elem);
// Turn on interrupt...
USART_ITConfig(EVAL_COM1, USART_IT_TXE, ENABLE);
return pushed;
}
int main(int argc, const char * argv[])
{
CyclicBuffer<int>* testBuffer = new CyclicBuffer<int>(25);
testBuffer->isFull();
for(int i = 0; i < 120;i++) {
testBuffer->push(i);
if(testBuffer->isFull()) {
if(i == 42) {
testBuffer->flush();
}
testBuffer->resetIterator();
for(int j =0; j < 25; j++) {
printf("inhalt an der stelle %d : %d \n", j, *(testBuffer->next()));
}
printf("\n");
}
}
return 0;
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
int s;
CyclicBuffer * buffer = new CyclicBuffer(16, s);
if(s==CyclicBuffer::BUFFER_OK)
qDebug() << "Buffer allocation succeeded with size 16.";
qDebug() << "Borders of buffer are set to:" << buffer->GetBottomIndex() << "and" << buffer->GetTopIndex();
qDebug() << "Pushing characters A, B, C, D into buffer.";
buffer->Push('A');
buffer->Push('B');
buffer->Push('C');
buffer->Push('D');
qDebug() << "Index of writing pointer is:" << buffer->GetPushIndex() << "and index of read pointer is:" << buffer->GetPopIndex();
qDebug() << "Reading the firstly pushed character:" << (char)buffer->Pop();
qDebug() << "Reading index is now:" << buffer->GetPopIndex();
qDebug() << "Starting 5 cycles of Pop() calls:\n";
unsigned char ch;
for(int i=0; i<5; i++)
{
if((ch = buffer->Pop())!=NULL)
qDebug() << "Cycle" << i << ":" << (char)ch;
else
qDebug() << "Cycle" << i << ":" << "Nothing to read.";
}
qDebug() << "\nSetting element at index 1 to value X.";
if(buffer->SetValueAt(1, 'X')==CyclicBuffer::BUFFER_OK)
qDebug() << "Value at index 1 was set to:" << (char)buffer->GetValueAt(1);
else
qDebug() << "Value could not be read.";
qDebug() << "Forcing index back to index 1.";
if(buffer->SetPopIndex(1)==CyclicBuffer::BUFFER_OK)
qDebug() << "Index was successfuly set back to" << buffer->GetPopIndex();
qDebug() << "\nPushing \'Hi world\' string.";
const char str[] = "Hi world";
for(int j=0; j<(sizeof(str)/sizeof(char)); j++)
{
buffer->Push((unsigned char)str[j]);
}
qDebug() << "Now reading string from buffer.";
while((ch = buffer->Pop())!=NULL)
{
qDebug() << ":" << (char)ch;
}
qDebug() << "Current writing index position:" << buffer->GetPushIndex();
const char str2[] = "Hi buffer";
qDebug() <<"\nAppending next string: \'Hi buffer\'";
for(int j=0; j<(sizeof(str2)/sizeof(char)); j++)
{
buffer->Push((unsigned char)str2[j]);
}
qDebug() << "Now reading string from buffer.";
while((ch = buffer->Pop())!=NULL)
{
qDebug() << ":" << (char)ch;
}
qDebug() << "Current writing index position:" << buffer->GetPushIndex();
qDebug() << "Current reading index position:" << buffer->GetPopIndex();
qDebug() << "Moving top border to index 10.";
buffer->SetTopIndex(10);
qDebug() << "Now buffer size is:" << buffer->GetBufferSize() << "while total memory size is:" << buffer->GetTotalBufferSize();
qDebug() << "Reallocating memory size to 32.";
if(buffer->ReallocBuffer(32)==CyclicBuffer::BUFFER_OK)
{
qDebug() << "Successfuly reallocated. Memory size is:" << buffer->GetTotalBufferSize() << "while buffer size is:" << buffer->GetBufferSize();
}
else
qDebug() << "Rallocation failed.";
qDebug() << "\nResetting buffer...";
buffer->ResetBuffer();
qDebug() << "Read pointer:" << buffer->GetPopIndex() << "Write pointer:" << buffer->GetPushIndex() << "Bottom border:" << buffer->GetBottomIndex() << "Top border:" << buffer->GetTopIndex();
qDebug() << "/nSetting bottom border to index 5.";
buffer->SetBottomIndex(5);
qDebug() << "Write and read pointers are now:" << buffer->GetPushIndex() << "and" << buffer->GetPopIndex();
qDebug() << "Buffer size is:" << buffer->GetBufferSize() << "while total memory size is:" << buffer->GetTotalBufferSize();
delete buffer;
return a.exec();
}
unsigned int tx_buffer_free_count(void) {
return tx_buffer.size() - tx_buffer.count();
}
void update(byte c) {
buffer.push(c);
}
