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いろいろなテクニック.Nucleo と DISCO-F746 用.
Dependencies: Array_Matrix mbed
Diff: UnionExample.hpp
- Revision:
- 0:bb939e0bc6e2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/UnionExample.hpp Sun Oct 15 11:41:48 2017 +0000 @@ -0,0 +1,25 @@ +//-------------------------------------------------------------- +// "union" のテスト +//-------------------------------------------------------------- + +#include "mbed.h" + +void UnionExample() +{ + union Int16U8 + { + int16_t v16; + uint8_t uv8[2]; + }; + Int16U8 x1, x2; + + x1.uv8[0] = 1; // 下位バイト + x1.uv8[1] = 2; // 上位バイト + + printf("\r\nx1.v16 = 0x%04X", x1.v16); + printf("\r\nx1.uv8[0] = 0x%02X, x1.uv8[1] = 0x%02X\r\n", x1.uv8[0], x1.uv8[1]); + + x2.uv8[0] = 255; + x2.uv8[1] = 255; + printf("\r\nx2.v16 = %d\r\n", x2.v16); +} \ No newline at end of file