Jens Altenburg
Programm code for testing Serial API (Tx/Rx interrupt)
Revision 0:e5e3838890fd, committed 2017-11-28
- Comitter:
- prof_al
- Date:
- Tue Nov 28 16:16:28 2017 +0000
- Commit message:
- Program code for testing serial Interrupts
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r e5e3838890fd main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Nov 28 16:16:28 2017 +0000
@@ -0,0 +1,83 @@
+#include "mbed.h"
+
+
+#define nSerialPatch /* compiler switch for workaround */
+
+DigitalOut myled(LED1);
+
+Serial stComX(USBTX,USBRX);/*
+* Description : UART communicatin (Txd(D1)/Rxd(D0)) USART2 to serial PC COM-Port
+*/
+
+unsigned char bSizeData; /*
+* Description : number of transmission data
+*/
+
+unsigned char *pUartData; /*
+* Description : pointer to data
+*/
+
+unsigned char abString[] = "Hello World!\n\r"; /*
+* Description : test string
+*/
+
+/* new data to UART */
+unsigned char SYS_vStartComX( unsigned char *pData, unsigned char bSize ){ /* new data to UART */
+ unsigned char i;
+ if(bSizeData) i = 0;
+ else{
+ bSizeData = bSize; /* number of transmission data */
+ pUartData = pData;
+ stComX.putc(*pUartData); /* first data */
+ pUartData++;
+ bSizeData--;
+#ifdef nSerialPatch
+ USART2->CR1 |= USART_CR1_TXEIE; /* enable TXE interrupt */
+#endif
+ i = 1;
+ }
+ return i;
+ }
+
+/* TX ISR */
+void vIsrTxComX( void ){
+ if(stComX.writeable()){ /* check stComX */
+ if(bSizeData){ /* further data available */
+ stComX.putc(*pUartData); /* next data */
+ pUartData++;
+ bSizeData--;
+ }
+#ifdef nSerialPatch
+ else{
+ USART2->CR1 &= ~USART_CR1_TXEIE; /* disable TXE interrupt */
+ }
+#else
+ stComX.putc('e');
+#endif
+ }
+ }
+
+/* RX ISR */
+void vIsrRxComX( void ){
+ volatile unsigned char i;
+ if(stComX.readable()){ /* check stComX */
+ i = (unsigned char)stComX.getc();
+ if(i == 'n'){
+ SYS_vStartComX( abString, sizeof(abString)-1);
+ }
+ }
+ }
+
+int main() {
+/* establish serial interrupts */
+ stComX.attach(&vIsrRxComX, Serial::RxIrq);
+ stComX.attach(&vIsrTxComX, Serial::TxIrq);
+
+/* endless loop */
+ while(1) {
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+ wait(0.2);
+ }
+}
diff -r 000000000000 -r e5e3838890fd mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Nov 28 16:16:28 2017 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/e7ca05fa8600 \ No newline at end of file