?? lcd_library.c
字號:
* Function: LCD_PutBigstr(char* Str, unsigned char y,unsigned char x)
* Input Variables: char* Str, unsigned char y,unsigned char x
* Return Variables: void
* Usage：顯示4倍大的字符串
**********************************************/
void LCD_PutBigstr(char* Str, unsigned char y,unsigned char x)
{
unsigned char i = 0;
while(*Str)
{
LCD_PutBigchar(*Str++,y,x+11*i);
i++;
}
}
/**********************************************
* Function: LCD_PlotLine(unsigned int NewPoint)
* Input Variables: unsigned int NewPoint
* Return Variables: void
* Usage：在LCD上繪制連續的直線
**********************************************/
void LCD_PlotLine(unsigned int NewPoint)
{
static short pPlot = 0;
static unsigned char PLOT_LAST_SHIFT = 0;
static char PLOT_BUFFER[LCD_PLOT_HEIGHT];
unsigned char j;
int diff;
char PlotShift;
unsigned long int Plot_Value,WRT_Value;
/*
for(i=LCD_PLOT_MAX_POINTS-1;i>0;i--)
{
for(j=0;j<LCD_PLOT_HEIGHT;j++)
{
PLOT_BUFFER[j][i] = PLOT_BUFFER[j][i-1];
}
}
*/
if(NewPoint>=LCD_PLOT_MAX_VALUE) PlotShift = LCD_PLOT_HEIGHT*8-1 ;
else
PlotShift = (char)((double)NewPoint*(LCD_PLOT_HEIGHT*8-1)/LCD_PLOT_MAX_VALUE);
// Attention! if LCD_PLOT_MAX_VALUE > 0xff for instance 0xffff, the multiplication might be overflow
// a double force convert is necessary
//Plot_Value = ((long int)0x01<<(LCD_PLOT_HEIGHT*8-1))>>PlotShift;
Plot_Value = 0x80000000>>(4-LCD_PLOT_HEIGHT)*8>>PlotShift;
WRT_Value = Plot_Value;
diff = PlotShift - PLOT_LAST_SHIFT;
if(diff>=2)
{
for(j=0;j<diff-1;j++)
{
WRT_Value = WRT_Value<<1;
WRT_Value += Plot_Value;
}
}
else if(diff<=-2)
{
for(j=0;j<1-diff;j++)
{
WRT_Value = WRT_Value>>1;
WRT_Value += Plot_Value;
}
}
for(j=0;j<LCD_PLOT_HEIGHT;j++)
{
PLOT_BUFFER[j] = (char)((WRT_Value>>(j*8))&0xff);
}
for(j=0;j<LCD_PLOT_HEIGHT;j++)
{
LCD_Cursor2yx(j,pPlot+LCD_DISPLAY_OFFSET);
LCD_WRT_DAT(PLOT_BUFFER[j]);
LCD_WRT_DAT(0xff);
LCD_WRT_DAT(0xff);
}
if((++pPlot) == LCD_PLOT_MAX_POINTS )pPlot = 0;
PLOT_LAST_SHIFT = PlotShift;
}
/**********************************************
* Function: LCD_RollingDisplay(char* pStr)
* Input Variables: char* pStr
* Return Variables: void
* Usage：在LCD滾動顯示信息
**********************************************/
void LCD_RollingDisplay(char* pStr)
{
static unsigned char i=7,j=0;
LCD_Cursor2yx(i,5);
LCD_Putstr(" ");
LCD_Cursor2yx(i,5);
_LCD_SET_DISPLINE(j);
LCD_Putstr(pStr);
if(++i>7)i=0;
j+=8;
if(j > 56) j =0;
}
U8 LCD_mini_printf(U8 *format, ...)
{
va_list arg_ptr;
U8 *p,*sval;
U8 u8_temp, n_sign, data_idx, min_size;
U8 data_buf[DATA_BUF_LEN];
S8 long_flag, alt_p_c;
S8 s8_val;
S16 s16_val;
S32 s32_val;
U16 u16_val;
U32 u32_val;
long_flag = TRUE;
alt_p_c = FALSE;
min_size = DATA_BUF_LEN-1;
va_start(arg_ptr, format); // make arg_ptr point to the first unnamed arg
for (p = format; *p; p++)
{
if ((*p == '%') || (alt_p_c == TRUE))
{
p++;
}
else
{
LCD_Putchar(*p);
alt_p_c = FALSE;
long_flag = FALSE;
continue; // "switch (*p)" section skipped
}
switch (*p)
{
case 'c':
if (long_flag == TRUE) // ERROR: 'l' before any 'c'
{
LCD_Putchar('l');
LCD_Putchar('c');
}
else
{
s8_val = (S8)(va_arg(arg_ptr, int)); // s8_val = (S8)(va_arg(arg_ptr, S16));
LCD_Putchar((U8)(s8_val));
}
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // case 'c'
case 's':
if (long_flag == TRUE) // ERROR: 'l' before any 's'
{
LCD_Putchar('l');
LCD_Putchar('s');
}
else
{
for (sval = va_arg(arg_ptr, U8 *); *sval; sval++)
{
LCD_Putchar(*sval);
}
}
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // case 's'
case 'l': // It is not the number "ONE" but the lower case of "L" character
if (long_flag == TRUE) // ERROR: two consecutive 'l'
{
LCD_Putchar('l');
alt_p_c = FALSE;
long_flag = FALSE;
}
else
{
alt_p_c = TRUE;
long_flag = TRUE;
}
p--;
break; // case 'l'
case 'd':
n_sign = FALSE;
for(data_idx = 0; data_idx < (DATA_BUF_LEN-1); data_idx++)
{
data_buf[data_idx] = '0';
}
data_buf[DATA_BUF_LEN-1] = 0;
data_idx = DATA_BUF_LEN - 2;
if (long_flag) // 32-bit
{
s32_val = va_arg(arg_ptr, S32);
if (s32_val < 0)
{
n_sign = TRUE;
s32_val = -s32_val;
}
while (s32_val)
{
data_buf[data_idx] = s32_val % 10 + '0';
s32_val /= 10;
data_idx--;
}
}
else // 16-bit
{
s16_val = (S16)(va_arg(arg_ptr, int)); // s16_val = va_arg(arg_ptr, S16);
if (s16_val < 0)
{
n_sign = TRUE;
s16_val = -s16_val;
}
while (s16_val)
{
data_buf[data_idx] = s16_val % 10 + '0';
s16_val /= 10;
data_idx--;
}
}
if (n_sign) { LCD_Putchar('-'); }
data_idx++;
if (min_size < data_idx)
{
data_idx = min_size;
}
LCD_Putstr (data_buf + data_idx);
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // case 'd'
case 'u':
for(data_idx = 0; data_idx < (DATA_BUF_LEN-1); data_idx++)
{
data_buf[data_idx] = '0';
}
data_buf[DATA_BUF_LEN-1] = 0;
data_idx = DATA_BUF_LEN - 2;
if (long_flag) // 32-bit
{
u32_val = va_arg(arg_ptr, U32);
while (u32_val)
{
data_buf[data_idx] = u32_val % 10 + '0';
u32_val /= 10;
data_idx--;
}
}
else // 16-bit
{
u16_val = (U16)(va_arg(arg_ptr, int)); // u16_val = va_arg(arg_ptr, U16);
while (u16_val)
{
data_buf[data_idx] = u16_val % 10 + '0';
data_idx--;
u16_val /= 10;
}
}
data_idx++;
if (min_size < data_idx)
{
data_idx = min_size;
}
LCD_Putstr (data_buf + data_idx);
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // case 'u':
case 'x':
case 'X':
for(data_idx = 0; data_idx < (DATA_BUF_LEN-1); data_idx++)
{
data_buf[data_idx] = '0';
}
data_buf[DATA_BUF_LEN-1] = 0;
data_idx = DATA_BUF_LEN - 2;
if (long_flag) // 32-bit
{
u32_val = va_arg(arg_ptr, U32);
while (u32_val)
{
u8_temp = (U8)(u32_val & 0x0F);
data_buf[data_idx] = (u8_temp < 10)? u8_temp+'0':u8_temp-10+(*p=='x'?'a':'A');
u32_val >>= 4;
data_idx--;
}
}
else // 16-bit
{
u16_val = (U16)(va_arg(arg_ptr, int)); // u16_val = va_arg(arg_ptr, U16);
while (u16_val)
{
u8_temp = (U8)(u16_val & 0x0F);
data_buf[data_idx] = (u8_temp < 10)? u8_temp+'0':u8_temp-10+(*p=='x'?'a':'A');
u16_val >>= 4;
data_idx--;
}
}
data_idx++;
if (min_size < data_idx)
{
data_idx = min_size;
}
LCD_Putstr (data_buf + data_idx);
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // case 'x' & 'X'
case '0': // Max allowed "min_size" 2 decimal digit, truncated to DATA_BUF_LEN-1.
min_size = DATA_BUF_LEN-1;
if (long_flag == TRUE) // ERROR: 'l' before '0'
{
LCD_Putchar('l');
LCD_Putchar('0');
// Clean up
alt_p_c = FALSE;
long_flag = FALSE;
break;
}
u8_temp = *++p;
if ((u8_temp >='0') && (u8_temp <='9'))
{
min_size = u8_temp & 0x0F;
u8_temp = *++p;
if ((u8_temp >='0') && (u8_temp <='9'))
{
min_size <<= 4;
min_size |= (u8_temp & 0x0F);
p++;
}
min_size = ((min_size & 0x0F) + ((min_size >> 4) *10)); // Decimal to hexa
if (min_size > (DATA_BUF_LEN-1))
{
min_size = (DATA_BUF_LEN-1);
} // Truncation
min_size = DATA_BUF_LEN-1 - min_size; // "min_size" formatted as "data_ix"
}
else // ERROR: any "char" after '0'
{
LCD_Putchar('0');
LCD_Putchar(*p);
// Clean up
alt_p_c = FALSE;
long_flag = FALSE;
break;
}
p-=2;
alt_p_c = TRUE;
// Clean up
long_flag = FALSE;
break; // case '0'
default:
if (long_flag == TRUE)
{
LCD_Putchar('l');
}
LCD_Putchar(*p);
// Clean up
min_size = DATA_BUF_LEN-1;
alt_p_c = FALSE;
long_flag = FALSE;
break; // default
} // switch (*p ...
} // for (p = ...
va_end(arg_ptr);
return 0;
}
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