📄 lcd_hd44780.c
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IIC(IIC_STATUS, STATUS_CLEAR);
IIC(IIC_DATA_SEND, data); /* Send Data to Device */
while(IIC_STATUS==0){ /*wait for transfer complete flag, ACK flag*/
fault++;
if (fault ==100) return;
}
while(IIC_ACK==1){
fault++;
if (fault ==100) return;
}
IIC(IIC_CONDITION,IIC_STOP); /*free the bus*/
}
#endif
/******************************************************************************
* Module : static void LcdPutNumberOnPortRST(tUC data, tUC rs, tUC rw)
* Description : Put data on display data port during LCD INITIALIZATION.
* Global Data : none
* Static Global Data: none
* Returns : none
* Arguments : tUC data,
* tUC rs={LCD_DATA, LCD_CTRL},
* tUC rw={LCD_READ, LCD_WRITE}
* Special Issues : none
******************************************************************************/
static void LcdPutNumberOnPortRST(tUC data, tUC rs, tUC rw)
{
#ifdef IIC_LCD_TRANSMIT
tUC data_send_iic;
#endif
#ifndef IIC_LCD_TRANSMIT
LCD_RS = rs;
#ifndef LCD_NO_READ_FUNCTION
LCD_RW = rw;
#endif
#endif
#ifdef LCD_DATAWIDTH_8
LCD_DPORT = data;
#endif
#ifdef LCD_DATAWIDTH_4
#ifdef LCD_DPORTH
/* write MSB data nibble to MSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = (data & 0xF0);
data_send_iic += (8*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0x0F) | (data & 0xF0);
#endif
#endif
#ifdef LCD_DPORTL
/* write MSB data nibble to LSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = ((data>>4) & 0x0F);
data_send_iic += (128*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0xF0) | ((data>>4) & 0x0F);
#endif
#endif
#endif
#ifdef LCD_DATAWIDTH_2
#ifdef LCD_DPORTH
/* write MSB data nibble to MSB port nibble */
LCD_DPORT = (LCD_DPORT & 0x0F) | (data & 0xF0);
#endif
#ifdef LCD_DPORTL
/* write MSB data nibble to LSB port nibble */
LCD_DPORT = (LCD_DPORT & 0xF0) | ((data>>4) & 0x0F);
#endif
#endif
LcdClock();
}
/******************************************************************************
* Module : static void LcdPutNumberOnPort(tUC data, tUC rs, tUC rw)
* Description : Put data on display data port
* Global Data : none
* Static Global Data: none
* Returns : none
* Arguments : tUC data,
* tUC rs={LCD_DATA, LCD_CTRL},
* tUC rw={LCD_READ, LCD_WRITE}
* Special Issues : none
* Special Issues : none
******************************************************************************/
static void LcdPutNumberOnPort(tUC data, tUC rs, tUC rw)
{
#ifdef IIC_LCD_TRANSMIT
tUC data_send_iic;
#endif
#ifndef IIC_LCD_TRANSMIT
LCD_RS = rs;
#ifndef LCD_NO_READ_FUNCTION
LCD_RW = rw;
#endif
#endif
LcdSetPortDirection(LCD_OUTPORT);
#ifdef LCD_DATAWIDTH_8
LCD_DPORT = data;
LcdClock();
#endif
#ifdef LCD_DATAWIDTH_4
#ifdef LCD_DPORTH
/* write MSB data nibble to MSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = (data & 0xF0);
data_send_iic += (8*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0x0F) | (data & 0xF0);
LcdClock();
#endif
/* write LSB data nibble to MSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = ((data<<4) & 0xF0);
data_send_iic += (8*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 4; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0x0F) | ((data<<4) & 0xF0);
LcdClock();
#endif
#endif
#ifdef LCD_DPORTL
/* write MSB data nibble to LSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = (data & 0x0F);
data_send_iic += (128*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0xF0) | ((data>>4) & 0x0F);
LcdClock();
#endif
/* write LSB data nibble to LSB port nibble */
#ifdef IIC_LCD_TRANSMIT
data_send_iic = ((data>>4) & 0x0F);
data_send_iic += (128*rs); /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic += 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
data_send_iic -= 64; /*LCD Clock + data/ctrl*/
LcdPutNumberOnIIC(data_send_iic);
LcdDelay1us();
#else
LCD_DPORT = (LCD_DPORT & 0xF0) | (data & 0x0F);
LcdClock();
#endif
#endif
#endif
}
/******************************************************************************
* Module : void LcdReset(void)
* Description : Standard display reset.
* Function has to be called before first display using
* to be initialized for communication.
* The function sets display behavior to :
* LCD_CURSORRIGHT,LCD_SHIFTOFF,LCD_DISPLAYON,
* LCD_CURSOROFF,LCD_BLONKOFF,LCD_SMALLFONT, and it is ready
* to be used.
* Global Data : none
* Static Global Data: none
* Returns : none
* Arguments : none
* Special Issues : none
******************************************************************************/
void LcdReset(void)
{
#ifndef IIC_LCD_TRANSMIT
LCD_DRS = LCD_TRUE; /* set pin direction as output */
LCD_DE = LCD_TRUE; /* set pin direction as output */
#ifndef LCD_NO_READ_FUNCTION
LCD_DRW = LCD_TRUE; /* set pin direction as output */
#endif
LcdSetPortDirection(LCD_OUTPORT); /* set data port pins as output */
LCD_RS = LCD_CTRL; /* write 0 */
LCD_E = LCD_FALSE; /* write 0 */
#ifndef LCD_NO_READ_FUNCTION
LCD_RW = LCD_WRITE; /* write 0 */
#endif
#endif
#ifdef IIC_LCD_TRANSMIT /*reset IIC & HW*/
LcdPutNumberOnIIC(0x0);
#endif
LcdPutNumberOnPortRST(0x30, LCD_CTRL, LCD_WRITE);
LcdDelay10ms(); /* longer than 4.1ms */
LcdPutNumberOnPortRST(0x30, LCD_CTRL, LCD_WRITE);
LcdDelay10ms(); /* longer than 100us */
LcdPutNumberOnPortRST(0x30, LCD_CTRL, LCD_WRITE);
LcdDelay10ms(); /* from now you can test busy */
#ifdef LCD_DATAWIDTH_4
LcdPutNumberOnPortRST(0x20, LCD_CTRL, LCD_WRITE);
#endif
/*display initialization:
8bit interface, 2 memory lines, 20 characters, font 5x7
*/
#ifdef LCD_DATAWIDTH_8
LcdCommand(0x24); /*0010 1000*/ /*8b interface, 2 lines, font 7x5 */
// LcdCommand(0x3C); /*0011 1000*/ /*8b interface, 2 lines, font 10x5*/
#endif
#ifdef LCD_DATAWIDTH_4
LcdCommand(0x28); /*0010 1000*/ /*4b interface, 2 lines, font 8x5 */
// LcdCommand(0x28); /*0010 1000*/ /*4b interface, 2 riadky, font 7x5 */
#endif
LcdCommand(0x08); /*0000 1000*/ /*display off and cursor on, no blink*/
LcdCommand(0x01); /*0000 0001*/ /*clear display */
LcdCommand(0x06); /*0000 0110*/ /*autoincrement shift cursor */
LcdCommand(0x0F); /*0000 1111*/ /*display on, cursor on */
}
/******************************************************************************
* Module : LcdSetUpIIC
* Description : Standard IIC configuration.
* Function has to be called before first display using
* to be initialized for communication.
* Global Data : none
* Static Global Data: none
* Returns : none
* Arguments : none
* Special Issues : none
******************************************************************************/
void LcdSetUpIIC(void)
{
/*Frequency Divider Register*/
IIC0_IBFD = 0x00; //64 0x50 //0d // prescaler clock
IIC0_IBAD = 0xFF; // slave adress
/*IIC control register*/
IIC0_IBCR_IBEN = 0; //Disable IIC
IIC0_IBCR_IBEN = 1; //Enable IIC
IIC0_IBCR_TX_RX = 1; //1 - transmit mode //0 - recieve mode
//IIC0_IBCR_IBIE = 0; //1 - enable interrupt on IIC //0 - disable interrupt
//IIC0_IBCR_IBSWAI = 0; //1 - halt clock in wait mode //0 - normal mode
}
/******************************************************************************
* Module : LcdShowFaultStatus
* Description : Write errormesage into LCD
* Global Data : systemStatus
* Static Global Data: none
* Returns : none
* Arguments : messageNumber
* Special Issues : none
******************************************************************************/
void LcdShowFaultStatus(tUC messageNumber)
{
char *originalString, *String = "Xx";
char *resultXx = NULL;
char *resultASCII = NULL;
char messageNumberASCI[] = "[ ]";
char *messageNumberAdress = &messageNumberASCI[0];
char firstline=0,zeroline=0;
if(messageNumber != 0){
messageNumberASCI[1] = ((messageNumber/10)+48); /*messagenumber to ASCII*/
messageNumberASCI[2] = ((messageNumber%10)+48);
for(firstline=0; resultASCII == NULL; firstline++){ /*find message number*/
originalString = (signed char *)&messages[firstline][0];
resultASCII = (signed char *volatile)strstr(originalString,messageNumberAdress);
} /**/
for(zeroline=firstline-2; resultXx == NULL; zeroline--){ /*what kind of message ?*/
originalString = (signed char *)&messages[zeroline][0];
resultXx = (signed char *volatile)strstr(originalString,String);
}
LcdClear(); /*send messages to LCD*/
LcdOutTextL(0,(signed char *)&(messages[(zeroline+1)][0]));
LcdOutTextL(1,(signed char *)&(messages[(firstline-1)][0]));
}else{
LcdClear();
LcdOutTextL(0,(signed char *)&(messages[(0)][0]));
}
LcdSetCursorOnOff(LCD_CUR⌨️ 快捷键说明
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