# WS2812 範例編譯錯誤
**URL:** https://forum.amebaiot.com/t/ws2812/1490
**Category:** Peripherals
**Tags:** rtl872xd, evb-bw16, 中文
**Created:** [October 23, 2022, 1:14pm UTC](https://forum.amebaiot.com/t/ws2812/1490 "2022-10-23T13:14:53Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Kevin](https://forum.amebaiot.com/u/Kevin)
#### Post date: [October 23, 2022, 1:14pm UTC](https://forum.amebaiot.com/t/ws2812/1490/1 "2022-10-23T13:14:53Z")
我使用 Arduino IDE V1.18.13 及 Realtek Lib V3.1.4
測試 WS2812B\_Pattrms 範例會出現編譯錯誤.
以下訊息
Arduino: 1.8.13 (Windows 10), Board: “BW16 (RTL8720DN), Disable, Enable”
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp: In member function ‘void WS2812B::show()’:
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:87:38: error: no matching function for call to ‘SPIClass::setDataMode(int, int, int)’
```
SPI.setDataMode(SPI_SS, 12, 0);
^
```
In file included from C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.h:5:0,
```
from C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:1:
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\SPI\src/SPI.h:90:10: note: candidate: void SPIClass::setDataMode(uint8\_t, uint8\_t)
```
void setDataMode(uint8_t _bits, uint8_t _mode);
^ ~~~~~~~~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\SPI\src/SPI.h:90:10: note: candidate expects 2 arguments, 3 provided
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\SPI\src/SPI.h:91:10: note: candidate: void SPIClass::setDataMode(uint8\_t)
```
void setDataMode(uint8_t _mode);
^ ~~~~~~~~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\SPI\src/SPI.h:91:10: note: candidate expects 1 argument, 3 provided
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:88:29: error: ‘SPI1\_MOSI’ was not declared in this scope
```
} else if (_input_pin== SPI1_MOSI) {
^ ~~~~~~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:90:9: error: ‘SPI1’ was not declared in this scope
```
SPI1.begin();
^~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:92:23: error: ‘SPI1\_MISO’ was not declared in this scope
```
Pinmux_Config(SPI1_MISO, PINMUX_FUNCTION_GPIO);
^ ~~~~~~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:93:23: error: ‘SPI1\_SCLK’ was not declared in this scope
```
Pinmux_Config(SPI1_SCLK, PINMUX_FUNCTION_GPIO);
^ ~~~~~~~~
```
C:\Users\dell\AppData\Local\Arduino15\packages\realtek\hardware\AmebaD\3.1.4\libraries\WS2812B\src\WS2812B.cpp:94:23: error: ‘SPI1\_SS’ was not declared in this scope
```
Pinmux_Config(SPI1_SS, PINMUX_FUNCTION_GPIO);
^ ~~~~~~
```
exit status 1
Error compiling for board BW16 (RTL8720DN).
This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.
---
### Author:  [@daphwl](https://forum.amebaiot.com/u/daphwl)
#### Post date: [October 26, 2022, 5:50am UTC](https://forum.amebaiot.com/t/ws2812/1490/2 "2022-10-26T05:50:37Z")
@Kevin 你好，
謝謝你提出的這個問題，昨天已經驗證並解決了這個問題。 你可以參考以下鏈接的解決方案：
>
>
> \- Update WS2812B.cpp \`show()\` function
> \- Update SPI.cpp spelling error
---
### Author:  [@Kevin](https://forum.amebaiot.com/u/Kevin)
#### Post date: [October 26, 2022, 12:56pm UTC](https://forum.amebaiot.com/t/ws2812/1490/3 "2022-10-26T12:56:40Z")
謝謝,已更新及測試OK