Nuvoton Nu-Link-Pro - Semihost

Nuvoton Nu-Link Debug Adapter User Manual
Oct 24, 2019 - 13 - Revision V1.01
3.1.4 Semihost
When using the Semihost function, the message of the NuMicro
®
Family microcontroller can be output
through UART to the debug window by the Nu-Link Adapter. That is, the message is output without
the GPIO. Figure 3-4 shows the debug messages in the “UART #1” form, which are the messages
output by the Nu-Link Adapter.
Follow the steps below to use the Semihost (taking the Keil MDK and M031AE series as example).
Step 1: Modify the strings in the “startup_NUC1xx.s” as follows.
;SEMIHOSTED SETL {FALSE} ; Delete this line
;↓Modify
SEMIHOSTED SETL {TRUE} ; Add this line
Step 2: Modify the strings in the “system_NUC1xx.h” as follows.
//#define DEBUG_ENABLE_SEMIHOST // Delete this line
//↓Modify
#define DEBUG_ENABLE_SEMIHOST // Add this line
Step 3: Invoke Rebuild to rebuild a project and enter Debug mode.
Step 4: In Debug mode, invoke View → Serial Windows → UART #1, as shown in Figure 3-4.
Step 5: Press F5 to program the target chip, and the debug messages are output to the UART #1
form.
Figure 3-4 Semihost Options in Keil MDK Debug Mode