Index: ADuCM360_demo_cn0359/src/hal/syscalls.cpp
===================================================================
diff -u -r8d80f35bf88694bd50d769b9bab31db8364a9004 -re68895e85fe32aca137ce08ac5d6accd67fec591
--- ADuCM360_demo_cn0359/src/hal/syscalls.cpp	(.../syscalls.cpp)	(revision 8d80f35bf88694bd50d769b9bab31db8364a9004)
+++ ADuCM360_demo_cn0359/src/hal/syscalls.cpp	(.../syscalls.cpp)	(revision e68895e85fe32aca137ce08ac5d6accd67fec591)
@@ -52,6 +52,7 @@
 #include <hal/drivers/adc.h>
 #include <hal/drivers/pwm.h>
 #include <hal/drivers/ad8253.h>
+#include <hal/drivers/calibration.h>
 
 #ifdef __cplusplus
 extern "C"
@@ -76,6 +77,8 @@
 #define ADC_HANDLE (0x24)
 #define PWM_HANDLE (0x25)
 #define AD8253_HANDLE (0x26)
+#define CAL_HANDLE (0x27)
+#define SER_HANDLE (0x28)
 
 ssize_t _read(int fd, void *buf, size_t count)
 {
@@ -87,6 +90,12 @@
 	case FLASH_HANDLE:
 		return flash_read(buf, count);
 		break;
+	case CAL_HANDLE:
+		return cal_read(buf, count);
+		break;
+	case SER_HANDLE:
+		return ser_read(buf, count);
+		break;
 	case DAC_HANDLE:
 		return dac_read(buf, count);
 		break;
@@ -117,6 +126,12 @@
 	case FLASH_HANDLE:
 		return flash_lseek(offset, whence);
 		break;
+	case CAL_HANDLE:
+		return cal_lseek(offset, whence);
+		break;
+	case SER_HANDLE:
+		return ser_lseek(offset, whence);
+		break;
 	case DAC_HANDLE:
 		return dac_lseek(offset, whence);
 		break;
@@ -152,6 +167,12 @@
 	case FLASH_HANDLE:
 		return flash_write(buf, count);
 		break;
+	case CAL_HANDLE:
+		return cal_write(buf, count);
+		break;
+	case SER_HANDLE:
+		return ser_write(buf, count);
+		break;
 	case DAC_HANDLE:
 		return dac_write(buf, count);
 		break;
@@ -196,6 +217,16 @@
 		return FLASH_HANDLE;
 	}
 
+	if (strcmp(pathname, "cal") == 0) {
+		cal_open();
+		return CAL_HANDLE;
+	}
+
+	if (strcmp(pathname, "ser") == 0) {
+		ser_open();
+		return SER_HANDLE;
+	}
+
 	if (strcmp(pathname, "dac") == 0) {
 		dac_open();
 		return DAC_HANDLE;