使用c8051f020读取bmp280的数据，并换算成高度值，用LCD12864显示
资源文件列表
project/bmp280 , 32588
project/bmp280.hex , 12257
project/bmp280.lnp , 110
project/bmp280.lst , 8674
project/bmp280.M51 , 29931
project/bmp280.obj , 19417
project/bmp280.plg , 2606
project/bmp280.uvopt , 57272
project/bmp280.uvproj , 14031
project/bmp280_uvproj.bak , 0
project/delay.lst , 2159
project/delay.obj , 2906
project/i2c.lst , 7391
project/i2c.obj , 5336
project/LCD12864.lst , 3760
project/LCD12864.obj , 4991
project/main.lst , 3562
project/main.obj , 5960
source/bmp280.c , 4368
source/bmp280.h , 520
source/delay.c , 608
source/delay.h , 167
source/i2c.c , 3493
source/i2c.h , 304
source/LCD12864.c , 1477
source/LCD12864.h , 572
source/main.c , 1320