【迪文COF结构智能屏试用体验】+简易示波器（测试代码）

ti

前面已经分享了我的界面的设计，现在分享一下我的测试代码。

示波器的数字通道用串口接收数据，并绘制对应的波形。

unsigned char uart_rx_buff[9] = {
0x5A, 0x5A,
0x00,
0x00, 0x00,
0x00, 0x00,
0x00, 0x00,
};
unsigned char uart_tx_buff[3] = {
0x5A, 0xA5,
0x00
};
unsigned char uart_rx_cnt = 0;
unsigned char uart_tx_cnt = 0;
unsigned char uart_rx_num = 0;
unsigned char uart_tx_num = 0;
unsigned char uart_rx_finish = 0;
unsigned char uart_tx_finish = 0;
void UART2_Init(unsigned long bdt)
{
unsigned short tmp;
tmp = 1024 - FOSC / 64 / bdt;
MUX_SEL |= 0x40; //复用选择口，选择复用为UART2，接口引出到 P0.4、P0.5
SetPinOut( 0, 4 );
SetPinIn( 0, 5 );
SCON2 = 0x50; //0011 0000 ,即将SM2，REN置1,SM2：只有当接收到第9位数据（RB8）为1时，才把接收到的前8位数据送入SBUF，且置位RI 发出中断申请，即发送方式为8N1 ，
ADCON = 0x80; //波特率发生器选择，要使用 SREL0H:L 自行设置
SREL2H = (unsigned char)( tmp >> 8 );
SREL2L = (unsigned char)tmp;
ES2 = 1;
EA = 1;
}
void UART2_ISR_PC(void) interrupt 4
{
EA = 0; //中断总控制位关闭
if( RI2 == 1 ) //接收中断标志位该位由硬件置位 ,软件清零
{
RI2 = 0;
uart_rx_buff[ uart_rx_cnt ] = SBUF2;
switch( uart_rx_cnt )
{
case 0:
if( uart_rx_buff[ uart_rx_cnt ] == 0x5A )
{
uart_rx_cnt ++;
}
else
{
uart_rx_buff[ uart_rx_cnt ] = 0;
uart_rx_cnt = 0;
}
break;
case 1:
if( uart_rx_buff[ uart_rx_cnt ] == 0x5A )
{
uart_rx_cnt ++;
}
else
{
uart_rx_buff[ uart_rx_cnt ] = 0;
uart_rx_cnt = 0;
}
break;
case 2:
uart_rx_num = uart_rx_buff[ uart_rx_cnt ];
uart_rx_cnt ++;
break;
default:
uart_rx_cnt ++;
if( uart_rx_cnt >= ( uart_rx_num + 3 ) )
{
uart_rx_cnt = 0;
/* 处理波形 */
uart_rx_finish = 1;
}
break;
}
}
if( ti2 == 1 ) //发送中断标志位该位由硬件置位 ,软件清零
{
if( uart_tx_cnt < uart_tx_num )
{
SBUF2 = uart_tx_buff[ uart_tx_cnt ];
uart_tx_cnt ++;
}
else
{
uart_tx_cnt = 0;
uart_tx_finish = 1;
}
TI2 = 0;
}
EA = 1; //中断总控制位关闭
}
void UART2_Sendbyte( unsigned char dat)
{
while( TI2 == 1 );
SBUF2 = dat;
}
void UART2_String(unsigned char * dat , unsigned char len)
{
unsigned char i;
for( i = 0; i < len; i ++ )
{
while( TI2 == 1 );
SBUF2 = *(dat+i);
}
}