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AN3128 датащи(PDF) 91 Page - STMicroelectronics

номер детали AN3128
подробное описание детали  This library is a firmware package which contains a collection
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AN3128
Multi-input embedded GUI library firmware
Doc ID 16918 Rev 5
91/105
4.6.42
GL_LCD_ReadRAM HAL function
Table 81 describes the GL_LCD_ReadRAM function of the hardware abstraction layer.
4.6.43
GL_RCC_APBPeriphClockCmd HAL function
Table 82 describes the GL_RCC_APBPeriphClockCmd function of the hardware abstraction
layer.
Input parameter {x}
GPIOx: where x can be B or D to select the GPIO peripheral.
CtrlPins: the control line. This parameter can be:
– LCD_CtrlPin_NCS: chip select pin (PB.02)
– CtrlPin_NWR: read/write selection pin (PD.15)
– CtrlPin_RS: register/RAM selection pin (PD.07)
BitVal: specifies the value to be written to the selected bit. This parameter
can be:
– GL_LOW: to clear the port pin
– GL_HIGH: to set the port pin
Output parameter {x}
None
Return value
None
Required preconditions None
Called functions
None
Table 80.
GL_LCD_CtrlLinesWrite (continued)
Name
Description
Table 81.
GL_LCD_ReadRAM
Name
Description
Function name
GL_LCD_ReadRAM
Function prototype
GL_uint16_t GL_LCD_ReadRAM (void)
Behavior description
Reads the LCD RAM
Input parameter {x}
None
Output parameter {x}
None
Return value
LCD RAM value.
Required preconditions None
Called functions
None
Table 82.
GL_RCC_APBPeriphClockCmd
Name
Description
Function name
GL_RCC_APBPeriphClockCmd
Function prototype
void GL_RCC_APBPeriphClockCmd (GL_uint32_t RCC_APBPeriph,
GL_FunctionalState NewState, uint8_t APB_Selector)



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