Diff: main.cpp

Revision:

0:e5e3838890fd

--- /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);
+    }
+}