Revision 0:bb5e43ae643e, committed 2016-03-16

Comitter:

hoting

Date:

Wed Mar 16 13:28:07 2016 +0000

Commit message:

UART to Labview

Changed in this revision

diff -r 000000000000 -r bb5e43ae643e main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 16 13:28:07 2016 +0000
@@ -0,0 +1,71 @@
+#include "mbed.h"
+
+Ticker timer1;
+Serial pc(USBTX, USBRX);
+//Serial pc(D10, D2);
+
+union splitter {
+    short j;
+    char C[2];
+    // C[0]就會等於j的lowbyte, C[1]就會等於j的hibyte
+};
+char T[4] = {255,255,0,0};
+int i = 0;
+int k = 0;
+
+//函式宣告
+void init_TIMER();
+void timer1_ITR();
+void init_UART();
+void UART_TX();
+
+int main()
+{
+    init_TIMER();
+    init_UART();
+    while(1) {
+    }
+}
+
+void init_TIMER()
+{
+    timer1.attach_us(&timer1_ITR, 1000);  // 1ms進一次timer1中斷
+}
+
+void timer1_ITR()
+{
+    UART_TX();
+}
+
+void init_UART()
+{
+    pc.baud(115200);  // baud rate設為115200
+}
+
+void UART_TX()
+{
+    splitter splitter1;
+
+    //數值範圍：-32768~32768
+    splitter1.j = -30000;
+
+    T[2] = splitter1.C[0];
+    T[3] = splitter1.C[1];
+
+    while (1) {
+        if (pc.writeable() == 1) {
+            pc.putc(T[i]);
+            i++;
+            k++;
+        }
+        if (k>1) {
+            k = 0;
+            break;
+        }
+        if (i>3) {
+            i = 0;
+            k = 0;
+            break;
+        }
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r bb5e43ae643e mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Mar 16 13:28:07 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/252557024ec3
\ No newline at end of file