init fw

app/write.c

@@ -0,0 +1,49 @@
+/*******************
+ *
+ * Copyright 1998-2010 IAR Systems AB.  
+ *
+ * This is a template implementation of the "__write" function used by
+ * the standard library.  Replace it with a system-specific
+ * implementation.
+ *
+ * The "__write" function should output "size" number of bytes from
+ * "buffer" in some application-specific way.  It should return the
+ * number of characters written, or _LLIO_ERROR on failure.
+ *
+ * If "buffer" is zero then __write should perform flushing of
+ * internal buffers, if any.  In this case "handle" can be -1 to
+ * indicate that all handles should be flushed.
+ *
+ * The template implementation below assumes that the application
+ * provides the function "MyLowLevelPutchar".  It should return the
+ * character written, or -1 on failure.
+ *
+ ********************/
+
+// #include <yfuns.h>
+#include "main.h"
+#include "cmsis_os.h"
+
+extern UART_HandleTypeDef DEBUG_UART;
+
+
+/*
+ * If the __write implementation uses internal buffering, uncomment
+ * the following line to ensure that we are called with "buffer" as 0
+ * (i.e. flush) when the application terminates.
+ */
+
+size_t _write(int handle, const unsigned char * buffer, size_t size) {
+    if (buffer == 0) {
+        /*
+         * This means that we should flush internal buffers.  Since we
+         * don't we just return.  (Remember, "handle" == -1 means that all
+         * handles should be flushed.)
+         */
+        return 0;
+    }
+    
+    HAL_UART_Transmit(&DEBUG_UART, (uint8_t*)buffer, (uint16_t)size, HAL_MAX_DELAY);
+
+    return (int)size;
+}