examples/uart.c: Add a _read call to example

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

api/mraa/uart.h

@@ -34,7 +34,7 @@
  * libmraa. It allows the exposure of UART pins on supported boards.
  * With functionality to expand at a later date.
  *
- * @snippet uart_setup.c Interesting
+ * @snippet uart.c Interesting
  */
 
 #ifdef __cplusplus

examples/CMakeLists.txt

@@ -8,7 +8,7 @@ add_executable (gpio_read6 gpio_read6.c)
 add_executable (spi_mcp4261 spi_mcp4261.c)
 add_executable (mmap-io2 mmap-io2.c)
 add_executable (blink_onboard blink_onboard.c)
-add_executable (uart_setup uart_setup.c)
+add_executable (uart uart.c)
 add_executable (mraa-gpio mraa-gpio.c)
 add_executable (spi_max7219 spi_max7219.c)
 
@@ -24,7 +24,7 @@ target_link_libraries (gpio_read6 mraa)
 target_link_libraries (spi_mcp4261 mraa)
 target_link_libraries (mmap-io2 mraa)
 target_link_libraries (blink_onboard mraa)
-target_link_libraries (uart_setup mraa)
+target_link_libraries (uart mraa)
 target_link_libraries (mraa-gpio mraa)
 target_link_libraries (spi_max7219 mraa)
 

examples/uart.c

@@ -1,6 +1,7 @@
 /*
  * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
- * Copyright (c) 2014 Intel Corporation.
+ * Author: Brendan Le Foll <brendan.le.foll@intel.com>
+ * Copyright (c) 2014, 2015 Intel Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -33,10 +34,17 @@ main(int argc, char** argv)
     uart = mraa_uart_init(0);
 
     if (uart == NULL) {
-        fprintf(stdout, "UART failed to setup\n");
+        fprintf(stderr, "UART failed to setup\n");
+        return EXIT_FAILURE;
     }
 
+    char buffer[] = "Hello Mraa!";
+    mraa_uart_write(uart, buffer, sizeof(buffer));
+
+    mraa_uart_stop(uart);
+
     mraa_deinit();
-    return 0;
+
+    return EXIT_SUCCESS;
 }
 //! [Interesting]