1 #include "library.h"
2 #include "system.h"
3 #include "sysc.h"
4 #include "adcts.h"
5 #include "intc.h"
6
7 #define ADCTS ((volatile oADCTS_REGS*)ADCTS_BASE)
8
9 void Adcts_Init(int channal, u32 freq);
10 void __irq Adcts_Isr(void);
11 void Delay(int time);
12
13 u32 sample_data=0;
14 int adc_flag = 0;
15 void main(void)
16 {
17 int channal = 0;
18 u32 freq = 2500000;
19 SYSTEM_EnableVIC();
20 SYSTEM_EnableIRQ();
21 //得到g_PCLK；
22 SYSC_GetClkInform();
23
24 Uart_Printf("此测试现在开始，可以按下ECS按键推出\n");
25 Adcts_Init(channal, freq);
26 Uart_Printf("该ADC转换频率为： %d\n",freq);
27
28 while(Uart_Getch() != 0x1b)
29 {
30 while(! adc_flag);
31 adc_flag = 0;
32 Uart_Printf("转换通道为：%d ， 所得到的转换值为：%04d\n",channal, sample_data);
33 Delay(3000);
34 }
35 }
36 void Delay(int time)
37 {
38 int i;
39 for(; time>0; time--)
40 for(i=0; i<3000;i++);
41 }
42
43 //adc初始化；
44
45 void Adcts_Init(int channal, u32 freq)
46 {
47 int prescale;
48 u32 uConValue;
49
50 prescale = (int)(g_PCLK/freq - 1);
51 ADCTS->rADCCON = (1 << 14) | (prescale << 6) |(channal << 3);//配置分频率，选择通道；
52
53 ADCTS->rADCCLRINT = 1; //清除ADC中断；
54
55 //设置ADC的中断向量地址
56 Outp32(rVIC1VECTADDR + 4*(NUM_ADC - 32), (u32)Adcts_Isr);
57 //使能中断向量；
58 uConValue = Inp32(rVIC1INTENABLE);
59 uConValue |= 1 << (NUM_ADC-32);
60 Outp32(rVIC1INTENABLE,uConValue);
61
62 //开始转换：
63 ADCTS->rADCCON |= 0x1;
64
65 }
66
67 void __irq Adcts_Isr(void)
68 {
69 //清除中断标志位；
70 ADCTS->rADCCLRINT = 1;
71
72 sample_data = ADCTS->rADCDAT0 & 0X3FF;
73 adc_flag = 1;
74 //开始下一次转换；
75 ADCTS->rADCCON |= 0x1;
76 Outp32(rVIC1ADDR,0);
77 Outp32(rVIC0ADDR,0);
78 }
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