Better Serial C++ class library with interrupt
Dependents: Dumb_box_rev2 mbed_GPSproject
iSerial class library can easy be used just by swapping Serial declarations.
API
iSerial | |
Examples
#include "mbed.h" #include "iSerial.h" char s[] = "12345678901234567890123456789012345678901234567890"; int main() { iSerial pc(USBTX,USBRX); char* c = s; while(1) { pc.puts(s); while(pc.readable()){ int ret = pc.getc(); if(ret) *c++ = ret; if(c >= s+sizeof(s)-1) c = s; } wait(1); } }
Example 2
Comparing speed of ordinary Serial functions
#include "mbed.h" #include "iSerial.h" char s[] = "12345678901234567890123456789012345678901234567890"; // 50 bytes int main() { Timer t; Serial pc(USBTX,USBRX); pc.baud(921600); t.reset(); t.start(); for(int i=0; i<30; i++) { pc.printf(s); wait(0.001); } t.stop(); int t1 = t.read_us(); pc.puts("\n\n\n"); iSerial ipc(USBTX,USBRX,NULL,1000,100); // try NOT to set the buffer over flowed // iSerial ipc(USBTX,USBRX); // set as default = 100, 100 ipc.baud(921600); t.reset(); t.start(); for(int i=0; i<30; i++) { ipc.printf(s); wait(0.001); } t.stop(); int t2 = t.read_us(); ipc.printf("\n\n\nThe time %d, %d [us] was taken.\n", t1, t2); ipc.puts("End."); ipc.flush(); }
Revision 8:20759f992d48, committed 2012-09-03
- Comitter:
- ykuroda
- Date:
- Mon Sep 03 17:59:00 2012 +0000
- Parent:
- 7:5a25789c3b55
- Commit message:
- bugfix of rx interrupt
Changed in this revision
iSerial.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/iSerial.cpp Mon Sep 03 17:26:38 2012 +0000 +++ b/iSerial.cpp Mon Sep 03 17:59:00 2012 +0000 @@ -9,8 +9,8 @@ #include "RingBuffer.h" #include "iSerial.h" - -DigitalOut led4(LED4); +//DigitalOut led3(LED3); +//DigitalOut led4(LED4); void @@ -83,22 +83,19 @@ void iSerial::rx_handler(void) { -// disable_uart_irq(); - if(Serial::readable()){ +// led3 = 1; + while(Serial::readable()) rxbuf.save(Serial::getc()); - } -// enable_uart_irq(); +// led3 = 0; } void iSerial::tx_handler(void) { -led4 = 1; -// disable_uart_irq(); +// led4 = 1; while(Serial::writeable() && txbuf.check()) Serial::putc( txbuf.read() ); -// enable_uart_irq(); -led4 = 0; +// led4 = 0; } iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize) @@ -139,9 +136,10 @@ { unsigned short int c; - while(!rxbuf.check()) // wait receiving a character - enable_uart_irq(); + while(!rxbuf.check()); // wait receiving a character + disable_uart_irq(); c = rxbuf.read(); + enable_uart_irq(); return c; }