stm的SPI

xinmeng_wit

stm的SPI [复制链接]

STM32的SPI搞了2天都还没搞出来，一下程序是用STM32的SPI驱动串行DA,,TLV5608输出正弦波，问题是波形死活不出来。

1. #include "spi.h"
   
2. 
   
3. //spi1_NSS==>PA4
   
4. //spi1_clk==>PA5
   
5. //spi1_MISO==>PA6
   
6. //spi1_MOSI==>PA7
   
7. 
   
8. //LDAC=======>PA0
   
9. //MODE=======>PA1
   
10. //FS=======>PA3
    
11. 
    
12. unsigned short sin[550]={ //??????
    
13. 0x1FF,0x205,0x20B,0x211,0x216,0x21C,0x222,0x228,0x22E,0x233,0x239,0x23F,0x245,0x24B,0x250,0x256
    
14. ,0x25C,0x262,0x267,0x26D,0x273,0x279,0x27E,0x284,0x289,0x28F,0x295,0x29A,0x2A0,0x2A5,0x2AB,0x2B0
    
15. ,0x2B6,0x2BB,0x2C1,0x2C6,0x2CB,0x2D1,0x2D6,0x2DB,0x2E1,0x2E6,0x2EB,0x2F0,0x2F5,0x2FB,0x300,0x305
    
16. ,0x30A,0x30F,0x314,0x318,0x31D,0x322,0x327,0x32C,0x330,0x335,0x33A,0x33E,0x343,0x347,0x34C,0x350
    
17. ,0x355,0x359,0x35D,0x361,0x366,0x36A,0x36E,0x372,0x376,0x37A,0x37E,0x382,0x385,0x389,0x38D,0x390
    
18. ,0x394,0x398,0x39B,0x39F,0x3A2,0x3A5,0x3A8,0x3AC,0x3AF,0x3B2,0x3B5,0x3B8,0x3BB,0x3BE,0x3C1,0x3C3
    
19. ,0x3C6,0x3C9,0x3CB,0x3CE,0x3D0,0x3D3,0x3D5,0x3D7,0x3D9,0x3DC,0x3DE,0x3E0,0x3E2,0x3E4,0x3E5,0x3E7
    
20. ,0x3E9,0x3EB,0x3EC,0x3EE,0x3EF,0x3F1,0x3F2,0x3F3,0x3F4,0x3F5,0x3F7,0x3F7,0x3F8,0x3F9,0x3FA,0x3FB
    
21. ,0x3FB,0x3FC,0x3FD,0x3FD,0x3FD,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FE,0x3FD
    
22. ,0x3FD,0x3FD,0x3FC,0x3FB,0x3FB,0x3FA,0x3F9,0x3F8,0x3F7,0x3F7,0x3F5,0x3F4,0x3F3,0x3F2,0x3F1,0x3EF
    
23. ,0x3EE,0x3EC,0x3EB,0x3E9,0x3E7,0x3E5,0x3E4,0x3E2,0x3E0,0x3DE,0x3DC,0x3D9,0x3D7,0x3D5,0x3D3,0x3D0
    
24. ,0x3CE,0x3CB,0x3C9,0x3C6,0x3C3,0x3C1,0x3BE,0x3BB,0x3B8,0x3B5,0x3B2,0x3AF,0x3AC,0x3A9,0x3A5,0x3A2
    
25. ,0x39F,0x39B,0x398,0x394,0x390,0x38D,0x389,0x385,0x382,0x37E,0x37A,0x376,0x372,0x36E,0x36A,0x366
    
26. ,0x361,0x35D,0x359,0x355,0x350,0x34C,0x347,0x343,0x33E,0x33A,0x335,0x330,0x32C,0x327,0x322,0x31D
    
27. ,0x318,0x314,0x30F,0x30A,0x305,0x300,0x2FB,0x2F5,0x2F0,0x2EB,0x2E6,0x2E1,0x2DB,0x2D6,0x2D1,0x2CB
    
28. ,0x2C6,0x2C1,0x2BB,0x2B6,0x2B0,0x2AB,0x2A5,0x2A0,0x29A,0x295,0x28F,0x289,0x284,0x27E,0x279,0x273
    
29. ,0x26D,0x267,0x262,0x25C,0x256,0x250,0x24B,0x245,0x23F,0x239,0x233,0x22E,0x228,0x222,0x21C,0x216
    
30. ,0x211,0x20B,0x205,0x1FF,0x1F9,0x1F3,0x1ED,0x1E8,0x1E2,0x1DC,0x1D6,0x1D0,0x1CA,0x1C5,0x1BF,0x1B9
    
31. ,0x1B3,0x1AE,0x1A8,0x1A2,0x19C,0x197,0x191,0x18B,0x185,0x180,0x17A,0x175,0x16F,0x169,0x164,0x15E
    
32. ,0x159,0x153,0x14E,0x148,0x143,0x13D,0x138,0x133,0x12D,0x128,0x123,0x11D,0x118,0x113,0x10E,0x109
    
33. ,0x103,0x0FE,0x0F9,0x0F4,0x0EF,0x0EA,0x0E6,0x0E1,0x0DC,0x0D7,0x0D2,0x0CE,0x0C9,0x0C4,0x0C0,0x0BB
    
34. ,0x0B7,0x0B2,0x0AE,0x0A9,0x0A5,0x0A1,0x09D,0x098,0x094,0x090,0x08C,0x088,0x084,0x080,0x07C,0x079
    
35. ,0x075,0x071,0x06E,0x06A,0x066,0x063,0x05F,0x05C,0x059,0x055,0x052,0x04F,0x04C,0x049,0x046,0x043
    
36. ,0x040,0x03D,0x03B,0x038,0x035,0x033,0x030,0x02E,0x02B,0x029,0x027,0x024,0x022,0x020,0x01E,0x01C
    
37. ,0x01A,0x019,0x017,0x015,0x013,0x012,0x010,0x00F,0x00D,0x00C,0x00B,0x00A,0x009,0x007,0x007,0x006
    
38. ,0x005,0x004,0x003,0x003,0x002,0x001,0x001,0x001,0x000,0x000,0x000,0x000,0x000,0x000,0x000,0x000
    
39. ,0x000,0x000,0x001,0x001,0x001,0x002,0x003,0x003,0x004,0x005,0x006,0x007,0x007,0x009,0x00A,0x00B
    
40. ,0x00C,0x00D,0x00F,0x010,0x012,0x013,0x015,0x017,0x019,0x01A,0x01C,0x01E,0x020,0x022,0x025,0x027
    
41. ,0x029,0x02B,0x02E,0x030,0x033,0x035,0x038,0x03B,0x03D,0x040,0x043,0x046,0x049,0x04C,0x04F,0x052
    
42. ,0x056,0x059,0x05C,0x05F,0x063,0x066,0x06A,0x06E,0x071,0x075,0x079,0x07C,0x080,0x084,0x088,0x08C
    
43. ,0x090,0x094,0x098,0x09D,0x0A1,0x0A5,0x0A9,0x0AE,0x0B2,0x0B7,0x0BB,0x0C0,0x0C4,0x0C9,0x0CE,0x0D2
    
44. ,0x0D7,0x0DC,0x0E1,0x0E6,0x0EA,0x0EF,0x0F4,0x0F9,0x0FE,0x103,0x109,0x10E,0x113,0x118,0x11D,0x123
    
45. ,0x128,0x12D,0x133,0x138,0x13D,0x143,0x148,0x14E,0x153,0x159,0x15E,0x164,0x169,0x16F,0x175,0x17A
    
46. ,0x180,0x185,0x18B,0x191,0x197,0x19C,0x1A2,0x1A8,0x1AE,0x1B3,0x1B9,0x1BF,0x1C5,0x1CB,0x1D0,0x1D6
    
47. ,0x1DC,0x1E2,0x1E8,0x1ED,0x1F3,0x1F9
    
48. };
    
49. 
    
50. void spi_init(void)
    
51. {
    
52.         RCC->APB2ENR |=(1<<2);//PORTA时钟使能
    
53.         RCC->APB2ENR |=(1<<12);//SPI1时钟使能       
    
54.        
    
55.         GPIOA->CRL &=0x000fffff;
    
56.         GPIOA->CRL |=0xbbb00000;//PA5,6,7设置为复用，
    
57.         GPIOA->ODR |=(0x07<<5); //PA5,6,7上拉，
    
58.        
    
59.         SPI1->CR1 &=~(1<<10);//全双工模式
    
60.         SPI1->CR1 |=(1<<9);//软件管理nss
    
61.         SPI1->CR1 |=(1<<8);
    
62.        
    
63.         SPI1->CR1 |=(1<<2);//SPI设置为主机
    
64.         SPI1->CR1 |=(1<<11);//16位数据格式
    
65. //        SPI1->CR1 &=~(1<<11);//8位数据格式
    
66.         SPI1->CR1 &=~(1<<1);//空闲时sclk为0，
    
67.         SPI1->CR1 |=(1<<0);//数据采样从第二个时钟边沿开始
    
68.         SPI1->CR1 |=(7<<3);        //Fsck=Fcpu/256
    
69.         SPI1->CR1 &=~(1<<7);//高位在前
    
70.         SPI1->CR1 |=(1<<6);        //开启SPI
    
71. }
    
72. 
    
73. void spi_write(unsigned short Txdata)
    
74. {
    
75. //        delay_ms(50);
    
76.         SPI1->DR=Txdata;//传输开始
    
77.         while(!(SPI1->SR&(1<<1)));
    
78. //        GPIOA->ODR |=(1<<2);
    
79. //        delay_us(10);
    
80. }
    
81. 
    
82. unsigned short tlv5608_deal(unsigned short dat,unsigned short chnnel)
    
83. {
    
84.         unsigned short dat_ch;
    
85.         if(chnnel==9)
    
86.         {
    
87.                 dat=(dat&0x3ff);
    
88.         }
    
89.         else
    
90.         {
    
91.                 dat=((dat&0x3ff)<<2);
    
92.         }
    
93.         chnnel=((chnnel&0x0f)<<12);
    
94.         dat_ch=dat|chnnel;
    
95.         return dat_ch;
    
96. }
    

复制代码

1. //#include "stm32f10x_lib.h"
   
2. #include "stm32f10x.h"
   
3. #include "sys.h"
   
4. #include "timer.h"
   
5. #include "gpio.h"
   
6. #include "spi.h"
   
7. 
   
8. 
   
9. //LDAC=======>PA0
   
10. //MODE=======>PA1
    
11. //FS=======>PA3
    
12. 
    
13. 
    
14. //www.doflye.net       
    
15. /*------------------------------------------------------------
    
16.                            主函数
    
17. ------------------------------------------------------------*/
    
18. int main()
    
19. {
    
20.    
    
21.   unsigned int i=0;
    
22.         unsigned int ff;
    
23.         Stm32_Clock_Init();//系统时钟设置,,设置为72M
    
24.         RCC->APB2ENR |= 0x00000001; //开启afio时钟
    
25.   //AFIO->MAPR = (0x00FFFFFF & AFIO->MAPR)|0x04000000;          //关闭JTAG
    
26.                                
    
27. 
    
28.         RCC->APB2ENR|=0X0000001c;//先使能外设IO PORTa,b,c时钟
    
29. //到此为止，时钟设置完成        
    
30. 
    
31.         gpio_init();
    
32.         spi_init();
    
33.         GPIOA->ODR |=(1<<1);        //
    
34. //        timer_init(5000,7199);//500ms中断一次，定时器的计数频率为72M/7199，计数次数为5000；
    
35.          while (1)
    
36.     {       
    
37.         GPIOA->ODR |=(1<<2);
    
38.         GPIOA->ODR &=~(1<<3);        //开片选       
    
39. //        delay_us(10);
    
40. spi_write(tlv5608_deal(sin[i],0));                       
    
41.         i++;
    
42.         if(i>549)
    
43.         {
    
44.                 i=0;
    
45.         }
    
46.         GPIOA->ODR |=(1<<3);        //关片选
    
47.         GPIOA->ODR &=~(1<<0);//更新数据
    
48.         }
    
49. }
    

复制代码

zhaojun_xf

spi并难啊，不过要先保证SPI没有问题，在调试其他芯片。。。。

dontium

找问题要一块一块地找。

首先把SPI调出来。可以拿示波器、逻辑分析仪来看。
再看看控制信号的正确性，可以读一下DOUT引脚的数据验证。

当以上通过了，再看看TLV5608的外围有没有问题。

处理一个问题，要把它分成一块一块地解决

xinmeng_wit

zhaojun_xf 发表于 2014-12-5 20:06
spi并难啊，不过要先保证SPI没有问题，在调试其他芯片。。。。

主机能不能不读从机的数据呢？就是像我这样：

• void spi_write(unsigned short Txdata)
• {
• //        delay_ms(50);
•         SPI1->DR=Txdata;//传输开始
•         while(!(SPI1->SR&(1<<1)));
• //        GPIOA->ODR |=(1<<2);
• //        delay_us(10);
• }
  

xinmeng_wit

dontium 发表于 2014-12-5 20:44
找问题要一块一块地找。

首先把SPI调出来。可以拿示波器、逻辑分析仪来看。
再看看控制信号的正确性，可以读一下DOUT引脚的数据验证。

当以上通过了，再看看TLV5608的外围有没有问题。

处理一个问题，要把它分成一块一块地解决

主机能不能不读从机的数据呢？就是像我这样：

• void spi_write(unsigned short Txdata)
• {
• //        delay_ms(50);
•         SPI1->DR=Txdata;//传输开始
•         while(!(SPI1->SR&(1<<1)));//等待发送完成
• //        GPIOA->ODR |=(1<<2);
• //        delay_us(10);
• }
•