..\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_CheckEvent (referred from oled_i2c.o).

…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_CheckEvent (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_Cmd (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_DeInit (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_GenerateSTART (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_GenerateSTOP (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_GetFlagStatus (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_Init (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_Send7bitAddress (referred from oled_i2c.o).
…\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_SendData (referred from oled_i2c.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 9 error messages.
“…\OBJ\USART.axf” - 9 Error(s), 0 Warning(s).

..\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_CheckEvent (referred from oled_i2c.o)._第1张图片

..\OBJ\USART.axf: Error: L6218E: Undefined symbol I2C_CheckEvent (referred from oled_i2c.o)._第2张图片

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