[ SEGGER Embedded Studio ] 編譯nRF52840時遇到的問題

作業系統：Windows 11

IDE：SEGGER Embedded Studio 7.32

SDK：nRF5_SDK_17.1.0_ddde560

Board：nRF52840 (pca10056)

---

狀況1

.text section is larger than specified size

.rodata section is larger than specified size

解法

點擊project裡 Edit Section Placement 開啟flash_placement.xml

把下列兩行裡的 size="0x4" 刪掉

<ProgramSection alignment="4" load="Yes" name=".text" size="0x4" />

<ProgramSection alignment="4" load="Yes" name=".rodata" size="0x4" />

---

狀況2

使用uart時遇到的error

unknown type name '__printf_tag_ptr'

解法

修改..\nRF5_SDK_17.1.0_ddde560\components\libraries\uart\retarget.c

__printf_tag_ptr 改為 FILE*

Options > Code > Library > Library I/O 改為 RTT 

---

狀況3

__vfprintf.h: No such file or directory

解法

把 SEGGER_RTT_Syscalls_SES.c 從project裡Remove

---

狀況4

呼叫 nrf_delay_ms()時編輯出現錯誤  ❌nrf_delay.h: No such file or directory

nrf_delay_ms() 函式的使用需增加下列SDK library路徑到

Options > Preprocessor > User Include Directories

../../../../../../components/libraries/delay

然後在main.c加入#include "nrf_delay.h"