docs/APIListToBePorted.md : Add up_lowputc description
7. up_putc()
8. up_getc()
9. up_puts()
-10. up_timer_initialize()
-11. up_wdog_init()
-12. up_wdog_keepalive()
-13. up_watchdog_disable()
-14. up_i2cinitialize()
-15. up_spiinitialize()
-16. up_rtc_initialize()
+10. up_lowputc()
+11. up_timer_initialize()
+12. up_wdog_init()
+13. up_wdog_keepalive()
+14. up_watchdog_disable()
+15. up_i2cinitialize()
+16. up_spiinitialize()
+17. up_rtc_initialize()
## API Description
@@ -111,7 +112,15 @@ a. **up_putc()** : Output one byte on the serial console
* Returned Value:
* sent character
```
-b. **up_getc()** : Read one byte from the serial console
+b. **up_lowputc()** : Output one byte on the serial console.
+```c
+ * Prototype: void up_lowputc(void)
+ * Input Parameters:
+ * character to output
+ * Returned Value:
+ * none
+```
+c. **up_getc()** : Read one byte from the serial console
```c
* Prototype: int up_getc(void)
* Input Parameters:
@@ -119,7 +128,7 @@ b. **up_getc()** : Read one byte from the serial console
* Returned Value:
* int value, -1 if error, 0~255 if byte successfully read
```
-c. **up_puts()** : Output string on the serial console
+d. **up_puts()** : Output string on the serial console
```c
* Prototype: void up_puts(const char *str)
* Input Parameters:
@@ -205,3 +214,15 @@ c. **up_watchdog_disable()** : Disable board specific watchdog
*File Location:* "os/arch/arm/src/chip/chip_rtc.c"
*Prototype Location:* "os/include/tinyara/arch.h"
+
+- Add low level chip specific API **up_lowputc()** to send one byte on the serial console.
+```c
+ * Prototype: void up_lowputc(void)
+ * Input Parameters:
+ * character to output
+ * Returned Value:
+ * none
+```
+*File Location:* "os/arch/arm/src/chip/chip_serial.c"
+
+*Prototype Location:* "os/arch/arm/src/common/up_internal.h"
