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I'm using the LCD_4bits project to display data (MCBSTM32 board) but when I change the LCD with another (phico d-0 94v-0) "">www.datasheetarchive.com/LM2780A2C40HN-datasheet.html" i can't display data. I need to change the pin assignement in order to use the 8bits-mode. can you help me.
thanks Erik. this the lcd_8bits.c
/**********************************************************************/ /* Includes ------*/ #include "lcd.h" #include "stm32f10x_conf.h" #include "stm32f10x.h" #include "LCD_8bits.h" /* Private functions ----------*/ /******************************* * Function Name : LCD_Init * Description : Initialisation routine for Alphanumeric Display. * Input param : NONE * Return : None ******************************/ void LCD_Init(void) { /*Start First Line Of LCD*/ WriteCommand(START_ONE); /*Start Second Line Of LCD*/ WriteCommand(START_TWO); /*function set-2 line display, 5*7 dots format display mode*/ WriteCommand(FUNCTION_SET); /*Display off*/ WriteCommand(DISPLAY_OFF); /*Display on,cursor off,cursor blink off*/ WriteCommand(DISPLAY_SETTINGS); /*Entry mode set-Increment and no display shift*/ WriteCommand(ENTRY_MODESET); /*clear display*/ WriteCommand(CLR_DISPLAY); /*Return home Command, sets the cursor at the beginning of the first line*/ WriteCommand(RETURN_HOME); } /*********************************** * Function Name : WriteCommand * Description : Writes a command to the LCD * Input param : u8_Command i.e the command to be sent to LCD * Return : None ************************************/ void WriteCommand( u8 u8_Command) { u8 u8_Cmd; u16 u16_TempVar=0; /*take RS low for Command*/ RESET_RS; //GPIO_WriteBit(GPIOA, GPIO_Pin_12, Bit_RESET); u8_Cmd =u8_Command; /*This retains the value of RS and Enable while sending the Command to the data pins*/ u16_TempVar=u16_TempVar | (u16)u8_Cmd; /********************For port C*******************/ if( (u16_TempVar) & (DATA_LINE_0) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_1, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_1, Bit_RESET); }
if( (u16_TempVar) & (DATA_LINE_1) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_2, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_2, Bit_RESET); } /****************For port D***********************/ if( (u16_TempVar) & (DATA_LINE_2) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_3, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_3, Bit_RESET); } /*******************For port B**********************/ if( (u16_TempVar) & (DATA_LINE_3) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_4, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_4, Bit_RESET); }
if( (u16_TempVar) & (DATA_LINE_4) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_5, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_5, Bit_RESET); }
if( (u16_TempVar) & (DATA_LINE_5) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_6, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_6, Bit_RESET); }
if( (u16_TempVar) & (DATA_LINE_6) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_7, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_7, Bit_RESET); }
if( (u16_TempVar) & (DATA_LINE_7) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_8, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_8, Bit_RESET); } /*****************************************/ /* take E high to enable data to be send to the LCD*/ SET_ENABLE; Delay(MS_ONE); //ST1208S_Delay(10,210); /*takes E low*/ RESET_ENABLE; Delay(MS_ONE); //ST1208S_Delay(10,210); } /********************************** * Function Name : WriteData * Description : Writes a data to the LCD * Input param : u8_Data i.e the data to be written on LCD * Return : None ***************************************/ void WriteData(u8 u8_Data) { u8 u8_Data1; /*Take RS high for data*/ RESET_RW; SET_RS; //GPIO_WriteBit(GPIOA, GPIO_Pin_12, Bit_SET); u8_Data1=u8_Data; /*This retains the value of RS and Enable while sending the data to the data pins*/ /**********************For port C********************/ if( (u8_Data1) & (DATA_LINE_0) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_1, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_1, Bit_RESET); }
if( (u8_Data1) & (DATA_LINE_1) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_2, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_2, Bit_RESET); }
/********************************For port D*********************************/ if( (u8_Data1) & (DATA_LINE_2) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_3, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_3, Bit_RESET); } /*********************For port B******************/ if( (u8_Data1) & (DATA_LINE_3) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_4, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_4, Bit_RESET); }
if( (u8_Data1) & (DATA_LINE_4) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_5, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_5, Bit_RESET); }
if( (u8_Data1) & (DATA_LINE_5) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_6, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_6, Bit_RESET); }
if( (u8_Data1) & (DATA_LINE_6) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_7, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_7, Bit_RESET); }
if( (u8_Data1) & (DATA_LINE_7) ) { GPIO_WriteBit(GPIOA, GPIO_Pin_8, Bit_SET); } else { GPIO_WriteBit(GPIOA, GPIO_Pin_8, Bit_RESET); } /****************************/ /*take E high*/ SET_ENABLE; Delay(MS_ONE); //ST1208S_Delay(10,210); /*take E low*/ RESET_ENABLE; Delay(MS_ONE); //ST1208S_Delay(10,210); } /****************************** * Function Name : ChangeLine * Description : Puts the cursor on 1st position of line 1 or 2 by * setting DDRAM address * Input param : line number * Return : None ********************************/ void ChangeLine(u8 u8_line) { switch(u8_line) { case 1:WriteCommand(LINEONE_HOME);/*address of the 1st position of 1st line*/ break; case 2:WriteCommand(LINETWO_HOME);/*address of the 1st position of 2nd line*/ break; } } /*************************************** * Function Name : WriteString * Description : writes the string to the LCD * Input param : pointer to character string * Return : None ****************************/ void WriteString(u8 *pu8_StringForLCD) { while(*pu8_StringForLCD!='\0') { WriteData(*pu8_StringForLCD); pu8_StringForLCD++; } } /****************************************** * Function Name : ClrDisplay * Description : Clear the display of LCD * Input param : NONE * Return : NONE ***********************************/ void ClrDisplay(void) { /*take RS low for sending Command*/ RESET_RS; Delay(MS_ONE); //ST1208S_Delay(10,210); WriteCommand(CLR_DISPLAY); Delay(MS_ONE); //ST1208S_Delay(10,210);
} /******************************/
and this the lcd_8bits.h
/*****************************/ /* Includes --------------------*/ //#include "stm32f10x_type.h" #include "stm32f10x_gpio.h" /* Macro Definitions ----------*/ #define SET_RS (GPIO_WriteBit(GPIOC, GPIO_Pin_2, Bit_SET)); #define RESET_RS (GPIO_WriteBit(GPIOC, GPIO_Pin_2, Bit_RESET)); #define SET_ENABLE (GPIO_WriteBit(GPIOC, GPIO_Pin_10, Bit_SET)); #define RESET_ENABLE (GPIO_WriteBit(GPIOC, GPIO_Pin_10, Bit_RESET)); #define SET_RW (GPIO_WriteBit(GPIOC, GPIO_Pin_9, Bit_SET)); #define RESET_RW (GPIO_WriteBit(GPIOC, GPIO_Pin_9, Bit_RESET)); /* private define-----------------*/ #define LINEONE (1)// line one of 16X2 alphanumeric display #define LINETWO (2)// line two of 16X2 alphanumeric display #define LINETWO_HOME (0xc0) #define LINEONE_HOME (0x80) #define START_ONE (0x33) #define START_TWO (0x32) #define FUNCTION_SET (0x38) #define DISPLAY_OFF (0x08) #define DISPLAY_SETTINGS (0x0E) #define ENTRY_MODESET (0x06) #define CLR_DISPLAY (0x01) #define RETURN_HOME (0x02) #define MS_FIVE (0x0032) #define MS_FIFTEEN (0x0096) #define MS_EIGHTY (0x0320) #define VH_OnTime (0x0015) #define VH_OffTime (0x0004) #define FIVE_SEC (0xC350) #define MS_ONE (0x000A) #define ONE_SEC (0x2710) #define TWO_SEC (0x4E20) #define TEN_MILLI_SEC (0x0064) #define MS_P19 (0x0019) /*data line defination-----------------*/ #define DATA_LINE_0 (0x0001) #define DATA_LINE_1 (0x0002) #define DATA_LINE_2 (0x0004) #define DATA_LINE_3 (0x0008) #define DATA_LINE_4 (0x0010) #define DATA_LINE_5 (0x0020) #define DATA_LINE_6 (0x0040) #define DATA_LINE_7 (0x0080) /* Exported functions ---------------- */ /* LCD functions */ void LCD_Init(void); void ClrDisplay(void); void WriteCommand(u8); void WriteData(u8); void ChangeLine(u8); void WriteString(u8 *); void Delay(u32); //-----------
I'am using MCBSTM32 board and an lcd (phico d-0 94v-0).