Diff: main.cpp

Revision:

1:dad12410fd2d

Parent:

0:5d7b0ed9dcc9

--- a/main.cpp	Sun Dec 04 19:19:19 2016 +0000
+++ b/main.cpp	Wed Dec 28 22:59:38 2016 +0000
@@ -2,20 +2,32 @@
  
 DigitalOut led1(LED1);
 DigitalOut led2(LED2);
- uint8_t data;
+uint8_t data;
 Serial pc(USBTX, USBRX);
  
-void call() {
-    // Note: you need to actually read from the serial to clear the RX interrupt
-    data = pc.getc();
-    printf("%c\n", data);
-    led2 = !led2;
+uint8_t take_read()
+{
+    char c;
+    int len;
+    char buffer[128];
+    pc.gets(buffer, 1024);
+    len=strlen(buffer)-1;
+    if (buffer[len] == '\n')
+        buffer[len] = '\0';
+    c = atoi(buffer);
+    return c;
+    //pc.printf(" I got '%s' of length '%d', in hex is '%x'\n", buffer, len, c);
 }
  
 int main() {
-    pc.attach(&call);
-    while (1) {
-        led1 = !led1;
-        wait(0.5);
+    uint8_t read_value;
+    pc.printf("Hello World!\n");
+    while(1)
+    {
+        read_value = take_read();
+        pc.printf("I got '%X'\n", read_value);
     }
-}
\ No newline at end of file
+}
+/* When you read 1024 bytes(max) the last byte is reserved for '\0' so only 1023 bytes will be read anyway.
+Furthermore '\n' and '\r' are counted with measuring length but '\0' is not counted.
+You can replace  '\n' by '\0' and not send '\r' at all.*/
\ No newline at end of file