Sarah Marsh / Mbed 2 deprecated Test_Serial_Api_Interrupt

Test

Dependencies:   mbed

Fork of Test_Serial_Api_Interrupt by Jens Altenburg

main.cpp@1:a4bb6f6eacf0, 2017-12-08 (annotated)

Committer:
sarahmarshy
Date:
Fri Dec 08 17:52:01 2017 +0000
Revision:
1:a4bb6f6eacf0
Parent:
0:e5e3838890fd 
Fix attach/detach TX IRQ

Who changed what in which revision?

UserRevisionLine numberNew contents of line
prof_al 0:e5e3838890fd 1 #include "mbed.h"
sarahmarshy 1:a4bb6f6eacf0 2
sarahmarshy 1:a4bb6f6eacf0 3
sarahmarshy 1:a4bb6f6eacf0 4 //#define nSerialPatch /* compiler switch for workaround */
sarahmarshy 1:a4bb6f6eacf0 5
prof_al 0:e5e3838890fd 6 DigitalOut myled(LED1);
sarahmarshy 1:a4bb6f6eacf0 7
prof_al 0:e5e3838890fd 8 Serial stComX(USBTX,USBRX);/*
prof_al 0:e5e3838890fd 9 * Description : UART communicatin (Txd(D1)/Rxd(D0)) USART2 to serial PC COM-Port
prof_al 0:e5e3838890fd 10 */
sarahmarshy 1:a4bb6f6eacf0 11
prof_al 0:e5e3838890fd 12 unsigned char bSizeData; /*
prof_al 0:e5e3838890fd 13 * Description : number of transmission data
prof_al 0:e5e3838890fd 14 */
sarahmarshy 1:a4bb6f6eacf0 15
prof_al 0:e5e3838890fd 16 unsigned char *pUartData; /*
prof_al 0:e5e3838890fd 17 * Description : pointer to data
prof_al 0:e5e3838890fd 18 */
sarahmarshy 1:a4bb6f6eacf0 19
prof_al 0:e5e3838890fd 20 unsigned char abString[] = "Hello World!\n\r"; /*
prof_al 0:e5e3838890fd 21 * Description : test string
prof_al 0:e5e3838890fd 22 */
prof_al 0:e5e3838890fd 23
sarahmarshy 1:a4bb6f6eacf0 24 void vIsrTxComX(void);
sarahmarshy 1:a4bb6f6eacf0 25
prof_al 0:e5e3838890fd 26 /* new data to UART */
prof_al 0:e5e3838890fd 27 unsigned char SYS_vStartComX( unsigned char *pData, unsigned char bSize ){ /* new data to UART */
prof_al 0:e5e3838890fd 28 unsigned char i;
prof_al 0:e5e3838890fd 29 if(bSizeData) i = 0;
prof_al 0:e5e3838890fd 30 else{
prof_al 0:e5e3838890fd 31 bSizeData = bSize; /* number of transmission data */
prof_al 0:e5e3838890fd 32 pUartData = pData;
sarahmarshy 1:a4bb6f6eacf0 33 //Attach TX Interrupt
sarahmarshy 1:a4bb6f6eacf0 34 stComX.attach(&vIsrTxComX, Serial::TxIrq);
prof_al 0:e5e3838890fd 35 i = 1;
prof_al 0:e5e3838890fd 36 }
prof_al 0:e5e3838890fd 37 return i;
prof_al 0:e5e3838890fd 38 }
sarahmarshy 1:a4bb6f6eacf0 39
prof_al 0:e5e3838890fd 40 /* TX ISR */
prof_al 0:e5e3838890fd 41 void vIsrTxComX( void ){
prof_al 0:e5e3838890fd 42 if(stComX.writeable()){ /* check stComX */
prof_al 0:e5e3838890fd 43 if(bSizeData){ /* further data available */
prof_al 0:e5e3838890fd 44 stComX.putc(*pUartData); /* next data */
prof_al 0:e5e3838890fd 45 pUartData++;
prof_al 0:e5e3838890fd 46 bSizeData--;
prof_al 0:e5e3838890fd 47 }
prof_al 0:e5e3838890fd 48 else{
sarahmarshy 1:a4bb6f6eacf0 49 //Detach TX interrupt, nothing left to send
sarahmarshy 1:a4bb6f6eacf0 50 stComX.attach(NULL, Serial::TxIrq); /* disable TXE interrupt */
prof_al 0:e5e3838890fd 51 }
prof_al 0:e5e3838890fd 52 }
prof_al 0:e5e3838890fd 53 }
prof_al 0:e5e3838890fd 54
prof_al 0:e5e3838890fd 55 /* RX ISR */
prof_al 0:e5e3838890fd 56 void vIsrRxComX( void ){
prof_al 0:e5e3838890fd 57 volatile unsigned char i;
prof_al 0:e5e3838890fd 58 if(stComX.readable()){ /* check stComX */
prof_al 0:e5e3838890fd 59 i = (unsigned char)stComX.getc();
prof_al 0:e5e3838890fd 60 if(i == 'n'){
prof_al 0:e5e3838890fd 61 SYS_vStartComX( abString, sizeof(abString)-1);
prof_al 0:e5e3838890fd 62 }
prof_al 0:e5e3838890fd 63 }
prof_al 0:e5e3838890fd 64 }
sarahmarshy 1:a4bb6f6eacf0 65
prof_al 0:e5e3838890fd 66 int main() {
prof_al 0:e5e3838890fd 67 /* establish serial interrupts */
prof_al 0:e5e3838890fd 68 stComX.attach(&vIsrRxComX, Serial::RxIrq);
sarahmarshy 1:a4bb6f6eacf0 69
prof_al 0:e5e3838890fd 70 /* endless loop */
prof_al 0:e5e3838890fd 71 while(1) {
prof_al 0:e5e3838890fd 72 myled = 1;
prof_al 0:e5e3838890fd 73 wait(0.2);
prof_al 0:e5e3838890fd 74 myled = 0;
prof_al 0:e5e3838890fd 75 wait(0.2);
prof_al 0:e5e3838890fd 76 }
sarahmarshy 1:a4bb6f6eacf0 77 }