A27系列优化I2C/RTC处理，新增版本A270Y

A27-AMTLDR/Src/exception.c

@@ -0,0 +1,38 @@
+#include "UartPrint.h"
+
+void undef_handler()
+{
+	SendUartString("\r\nUndef EXC");
+	while(1);
+}
+
+void prefetch_handler()
+{
+	SendUartString("\r\nPrefetch EXC");
+	while(1);
+}
+
+void data_abort_handler()
+{
+	SendUartString("\r\nData abort EXC");
+	while(1);
+}
+
+void irq_handler()
+{
+	SendUartString("\r\nIRQ EXC");
+	while(1);
+}
+
+void fiq_handler()
+{
+	SendUartString("\r\nFIQ EXC");
+	while(1);
+}
+
+void swi_handler()
+{
+	SendUartString("\r\nSWI EXC");
+	while(1);
+}
+