Buffered Serial Port Driver for RTOS
Dependents: nucleo_cannonball PiballNeoController
Buffered Serial Port Driver for RTOS
- ISR driven, ring buffered IO operation
- IO operations are idle waiting, don't waste time in RTOS :D
- Can use external buffers
- Based on mbed RawSerial
Example
SerialDriver Example
#include "SerialDriver.h" SerialDriver pc(USBTX, USBRX); int main() { // setup serial port pc.baud(9600); // print some text pc.puts("This is just a string.\r\n"); pc.printf("But this is a %s with integer %i and float %f.\r\n", "formatted text", 123, 0.456f); // now lets behave like a null modem while(1) pc.putc(pc.getc()); }
Look at the API Documentation for more Examples.
Dependencies
Import librarymbed
The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
Import librarymbed-rtos
Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.
If you find a bug, please help me to fix it. Send me a message. You can help me a lot: Write a demo program that causes the bug reproducible.
Diff: SerialDriver.h
- Revision:
- 3:ea9719695b6a
- Parent:
- 0:cd0d79be0c1a
- Child:
- 8:903a4162a0d1
--- a/SerialDriver.h Thu Jan 15 09:53:09 2015 +0000 +++ b/SerialDriver.h Mon Jan 26 19:21:56 2015 +0000 @@ -46,6 +46,8 @@ Semaphore semTxBufferFull; // used by putc to wait Semaphore semRxBufferEmpty; // used by getc to wait + // drop counters + volatile int numTxDrops, numRxDrops; public: /// @brief Prepares ring buffer and irq @@ -170,4 +172,13 @@ /// For compatibility with mbed Serial. /// @return true - RX buffer is readable, false - else inline bool readable() { return !isRxBufferEmpty(); } + + + /// @brief Returns number of dropped bytes that did not fit into TX buffer + /// @return number of dropped tx bytes + inline int getNumTxDrops() { return numTxDrops; } + + /// @brief Returns number of dropped bytes that did not fit into RX buffer + /// @return number of dropped rx bytes + inline int getNumRxDrops() { return numRxDrops; } };