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(); }
Diff: iSerial.cpp
- Revision:
- 5:d83fc550ccbc
- Parent:
- 4:b38ef9675d39
- Child:
- 6:8d4b95b90c3b
diff -r b38ef9675d39 -r d83fc550ccbc iSerial.cpp --- a/iSerial.cpp Mon Sep 03 09:15:34 2012 +0000 +++ b/iSerial.cpp Mon Sep 03 11:18:05 2012 +0000 @@ -10,19 +10,40 @@ #include "iSerial.h" - -#if defined(TARGET_LPC1768) +//DigitalOut led1(LED1); -// UART1 = p9, p10 - - #define UART_IRQn UART2_IRQn -#elif defined(TARGET_LPC11U24) +void +iSerial::enable_uart_irq(void) +{ + switch(tx){ + case USBTX: + #if defined(TARGET_LPC1768) + NVIC_EnableIRQ(UART2_IRQn); + #elif defined(TARGET_LPC11U24) + NVIC_EnableIRQ(UART_IRQn); + #endif +// led1 = !led1; + break; + + case p9: + #if defined(TARGET_LPC1768) + NVIC_EnableIRQ(UART1_IRQn); + #elif defined(TARGET_LPC11U24) + NVIC_EnableIRQ(UART_IRQn); + #endif + break; - #define UART_IRQn UART_IRQn - -#endif - + #if defined(TARGET_LPC1768) + case p13: + NVIC_EnableIRQ(UART3_IRQn); + break; + case p28: + NVIC_EnableIRQ(UART0_IRQn); + break; + #endif + } +} /* @@ -34,8 +55,7 @@ if(Serial::readable()){ rxbuf.save(Serial::getc()); } - - NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); + enable_uart_irq(); } void @@ -46,16 +66,18 @@ Serial::putc( txbuf.read() ); } } - NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); + enable_uart_irq(); } iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize) : Serial(_tx, _rx, _name), + tx(_tx), + rx(_rx), txbufsize(_txbufsize), rxbufsize(_rxbufsize), txbuf(RingBuffer(txbufsize)), rxbuf(RingBuffer(rxbufsize)), - str(new char [txbufsize]) + str(new char [txbufsize]) { __disable_irq(); @@ -66,7 +88,7 @@ // baud(baudrate); __enable_irq(); - NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); + enable_uart_irq(); } iSerial::~iSerial() @@ -100,7 +122,7 @@ } else { while(txbuf.full()); txbuf.save(ch); - NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); + enable_uart_irq(); } } @@ -136,5 +158,3 @@ } - -