Jon Trinder
When debugging code it can be handy to examine/alter variables and to check the state of input lines. So your main program can run and you have access to alter variables and run functions from a terminal. In this sample the main program is just a loop that flashes an LED. In that loop a periodic call is made to ShellTC which handles any commands from the serial terminal. The code is a bit quirky(it was originally written for a very resource limited device) but it works well enough to be useful, hence its published. More details in the main.cpp
.
Diff: sio.cpp
- Revision:
- 4:107d2d3294da
- Parent:
- 3:6a35fb789679
--- a/sio.cpp Wed Feb 04 21:07:52 2015 +0000
+++ b/sio.cpp Fri Feb 06 09:46:44 2015 +0000
@@ -18,7 +18,7 @@
/*
sio handler august 96
*/
-//(c)jont@ninelocks.com 1992-2012
+//(c)jont@ninelocks.com 1992-2015
#include "string.h"
#include <stdio.h>
#include <ctype.h>
@@ -63,16 +63,8 @@
char theChar = 0x00; //used to be a char...
//h8 theChar = SIO_RDR; /* get received character */
theChar = pc.getc();
-//theChar = LPC_UART0->RBR; //oct2012 expereiment
-//
-//see this for reg names http://mbed.org/users/4180_1/notebook/cc-io-register-names/
- //do {
- // } while ((LPC_UART0->LSR & 0x20)==0) ;
-//write character to UART
- // LPC_UART0->THR = theChar ;
-
- //theChar = RCREG; //PIC
- // theChar = 0x42; //TODO2k12 this needs to be whats read from sio RXREG
+pc.putc(theChar);
+
/* if an Xoff was received from
remote term telling us to stop...
in which case if anything other than an xon is receievd
@@ -127,15 +119,15 @@
{
//see http://mbed.org/forum/mbed/topic/3414/?page=1#comment-17231
- while (pc.readable() == 1){
- // jtdebug();
+ while (pc.readable()){
+
sioGetSingle();
- uint32_t UART_0_RBR = LPC_UART0->RBR;
+
}
//http://mbed.org/forum/mbed/topic/408/?page=1#comment-2221
// pc.putc(0x00);
- uint32_t UART_0_RBR = LPC_UART0->RBR;
+// uint32_t UART_0_RBR = LPC_UART0->RBR;
}