Diff: z_example/6_USBHost_serial.cpp

Revision:

3:35ac9ee7d2d6

Child:

4:0f4affc00183

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/z_example/6_USBHost_serial.cpp	Wed Aug 07 05:39:01 2019 +0000
@@ -0,0 +1,88 @@
+// Original
+//      https://os.mbed.com/handbook/USBHostSerial
+//
+// Modified by K.Arai
+//      July 25th, 2019
+//
+
+#include "select_program.h"
+//#define EXAMPLE_6_USBHOST_SERIAL
+#ifdef EXAMPLE_6_USBHOST_SERIAL
+
+//  Include --------------------------------------------------------------------
+#include "mbed.h"
+#include "USBHostSerial.h"
+
+//  Definition -----------------------------------------------------------------
+
+
+//  Constructor ----------------------------------------------------------------
+DigitalOut led(LED1);
+Serial pc(USBTX, USBRX, 115200);
+
+
+//  RAM ------------------------------------------------------------------------
+
+//  ROM / Constant data --------------------------------------------------------
+
+//  Function prototypes --------------------------------------------------------
+static void serial_task(void const *args);
+
+//------------------------------------------------------------------------------
+//  Control Program
+//------------------------------------------------------------------------------
+osThreadDef(serial_task, osPriorityNormal, 4096);
+
+int main()
+{
+    pc.printf("\x1b[2J\x1b[H %s\r\n %s %s (UTC)\r\n",
+              __FILE__, __DATE__, __TIME__);
+    osThreadCreate(osThread(serial_task), NULL);
+    while(true) {
+        led=!led;
+        ThisThread::sleep_for(1000);
+    }
+}
+
+void serial_task(void const*)
+{
+    USBHostSerial usb_ser;
+    wait(0.5f);
+    while(true) {
+        // try to connect a USB serial device
+        while(!usb_ser.connect()) {
+            ThisThread::sleep_for(500);
+        }
+        // in a loop, print all characters received
+        // if the device is disconnected, we try to connect it again
+        while (true) {
+            // if device disconnected, try to connect it again
+            if (!usb_ser.connected()) {
+                break;
+            }
+            // print characters received
+            while (usb_ser.available()) {
+                pc.printf("%c", usb_ser.getc());
+            }
+        }
+    }
+}
+
+#endif
+
+#if 0
+// USBDevice example
+#include "mbed.h"
+#include "USBSerial.h"
+//Virtual serial port over USB
+USBSerial serial;
+Serial pc(USBTX, USBRX, 115200);
+int main(void)
+{
+    uint32_t n = 0;
+    while(1) {
+        serial.printf("I am a virtual serial port\r\n");
+        pc.printf("I am also a virtual serial port. loop count = %d\r\n", n++);
+    }
+}
+#endif
\ No newline at end of file