msp430 MCU rc522 radio frequency program and circuit diagram

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msp430 MCU rc522 radio frequency program and circuit diagram [Copy link]

The microcontroller source program is as follows:

1. #include<msp430x41x.h>
2. #include "main.h"
3. #include "mfrc522.h"
5. #pragma memory = constseg(TAB)
6. unsigned char data1[16] = {0x12,0x34,0x56,0x78,0xED,0xCB,0xA9,0x87,0x12,0x34,0x56,0x78,0x01,0xFE,0x01,0xFE};
7. //If a block of the M1 card is written in the following format, then this block is a wallet and can receive deduction and recharge commands
8. //4-byte amount (low byte first) + 4-byte amount inverted + 4-byte amount + 1-byte block address + 1-byte block address inverted + 1-byte block address + 1-byte block address inverted
9. unsigned char data2[4]= {0x12,0,0,0};
10. unsigned char DefaultKey[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
11. #pragma memory=default
13. unsigned char g_ucTempbuf[20];
15. void main(void)
16. {
17. unsigned char status;
18. InitializeSystem();
19. PcdReset();
20. PcdAntennaOff();
21. PcdAntennaOn();
22. while ( 1 )
23. {
24. status = PcdRequest(PICC_REQALL, g_ucTempbuf);
25. if (status != MI_OK)
26. {
27. LED_GREEN_OFF;
28. continue;
29. }
30. LED_GREEN_ON; // detect the presence of card
32. status = PcdAnticoll(g_ucTempbuf);
33. if (status != MI_OK)
34. { continue; }
36. status = PcdSelect(g_ucTempbuf);
37. if (status != MI_OK)
38. { continue; }
40. status = PcdAuthState(PICC_AUTHENT1A, 1, DefaultKey, g_ucTempbuf);
41. if (status != MI_OK)
42. { continue; }
44. status = PcdWrite(1, data1);
45. if (status != MI_OK)
46. { continue; }
48. status = PcdValue(PICC_DECREMENT,1,data2);
49. if (status != MI_OK)
50. { continue; }
52. status = PcdBakValue(1, 2);
53. if (status != MI_OK)
54. { continue; }
56. status = PcdRead(2, g_ucTempbuf);
57. if (status != MI_OK)
58. { continue; }
60. PcdHalt();
61. }
62. }
65. /////////////////////////////////////////////////////////////////////
66. //Function: system initialization
67. /////////////////////////////////////////////////////////////////////
68. void InitializeSystem(void)
69. {
70. WDTCTL = WDTPW + WDTHOLD; //Stop watchdog timer
71. _DINT();
73. P1DIR = 0xE8;
74. P1OUT = 0xFF;
76. P6DIR = 0x08;
77. P6OUT = 0xFF;
78. }