uint16_t ADC_Converter(void)
{
uint32_t i; //用于12位数字的计数
uint16_t result = 0;
//时序图参见文档的12页。
CONV_H();
Delay_nop(SHORT_DELAY);
CONV_L(); // CONV下降沿表示转换启动。
Delay_nop(SHORT_DELAY);
CLK_H(); // 先连续两个时钟脉冲，满足时序要求
Delay_nop(SHORT_DELAY);
CLK_L();
Delay_nop(SHORT_DELAY);
CLK_H();
Delay_nop(SHORT_DELAY);
CLK_L();
for(i=0;i<12;i++) // 第三个脉冲开始读取12位的转换内容。
{
CLK_H();
Delay_nop(SHORT_DELAY);
if( DAT_READ() )
result |= 0x0001;
else
result &= 0xfffe;
CLK_L();
Delay_nop(SHORT_DELAY);
result <<= 1;
}
CLK_H();
Delay_nop(SHORT_DELAY);
CLK_L(); // 最后发两个脉冲满足16位的时钟对齐。
Delay_nop(SHORT_DELAY);
CLK_H();
Delay_nop(SHORT_DELAY);
CLK_L();
Delay_nop(SHORT_DELAY);
CONV_H(); // 表示转换结束。
return(result); //返回值
}
u8 SPI_write_byte(u8 byte)
{
u8 i;
for(i=0;i<8;i++)
{
if(byte & 0x80)
MOSI_H();
else
MOSI_L();
byte = (byte << 1);
CLK_H();
byte |= READ_MISO;
CLK_L();
}
return(byte);
}
static void write_TM1616(u8 data)
{
u8 data_temp = data;
u8 i;
for(i=0;i<8;i++)
{
if((data_temp&0x01)!=0) //send from lower bit
{
DIN_H();
}
else
{
DIN_L();
}
CLK_L(); //TM1616 read data as clk positive edge
ndelay(1);
CLK_H();
ndelay(1);
data_temp = data_temp>>1;
}
}
static void show_4_num(u8 data1,u8 data2,u8 data3,u8 data4)
{
DIN_H();
CLK_H();
STB_H();
ndelay(1);
write_TM1616_command(0x00);
#ifdef LOCK_ADDR
write_TM1616_command(0x44);
write_TM1616_data_mod0(0xc0,NUM[data1]);
write_TM1616_data_mod0(0xc2,NUM[data2]);
write_TM1616_data_mod0(0xc4,NUM[data3]);
write_TM1616_data_mod0(0xc6,NUM[data4]);
#endif
#ifdef INC_ADDR
write_TM1616_command(0x40);
write_TM1616_data_mod1(0xc0,NUM[data1],NUM[data2],NUM[data3],NUM[data4]);
#endif
sunxi_d7s_display_on();
}
