Linker LED bar on pcDuino

pcduino_3001984

这个教程介绍pcDuino连接Linker LED bar

Linker Kit 所有的示例代码可以在 这里下载。

这里需要用到的代码如下：

1. /*
   
2. * LED bar test program for a10
   
3. */
   
4. #include
   
5. 
   
6. #define DATA_Pin 0 //DATA IN
   
7. #define CLK_Pin 1 //CLK IN
   
8. 
   
9. #define CmdMode 0x0000 //Work on 8-bit mode
   
10. #define ON 0x00ff //8-bit 1 data
    
11. #define SHUT 0x0000 //8-bit 0 data
    
12. 
    
13. static int s_clk_flag = 0;
    
14. 
    
15. void send16bitData(unsigned int data)
    
16. {
    
17. for(unsigned char i=0;i<16;i++){
    
18. if(data & 0x8000){
    
19. digitalWrite(DATA_Pin, HIGH);
    
20. }else{
    
21. digitalWrite(DATA_Pin, LOW);
    
22. }
    
23. 
    
24. if(s_clk_flag){
    
25. digitalWrite(CLK_Pin, LOW);
    
26. s_clk_flag = 0;
    
27. }else{
    
28. digitalWrite(CLK_Pin, HIGH);
    
29. s_clk_flag = 1;
    
30. }
    
31. 
    
32. data <<= 1;
    
33. }
    
34. }
    
35. 
    
36. //latch routine for MY9221 data exchange
    
37. void latchData(void)
    
38. {
    
39. int latch_flag = 0;
    
40. digitalWrite(DATA_Pin, LOW);
    
41. delayMicroseconds(200);
    
42. for(unsigned char i=0;i<8;i++){
    
43. if(latch_flag){
    
44. digitalWrite(DATA_Pin, LOW);
    
45. latch_flag = 0;
    
46. }else{
    
47. digitalWrite(DATA_Pin, HIGH);
    
48. latch_flag = 1;
    
49. }
    
50. }
    
51. delayMicroseconds(200);
    
52. }
    
53. 
    
54. void sendLED(unsigned int LEDstate)
    
55. {
    
56. unsigned char i;
    
57. for(i=0;i<12;i++) { if(LEDstate&0x0001) send16bitData(ON); else send16bitData(SHUT); LEDstate=LEDstate>>1;
    
58. }
    
59. }
    
60. 
    
61. void setup()
    
62. {
    
63. printf("LED bar test code!\n");
    
64. printf("Using I/O_0=DATA, I/O_1=CLK.\n");
    
65. 
    
66. pinMode(DATA_Pin,OUTPUT); //Data pin
    
67. pinMode(CLK_Pin,OUTPUT); //CLK pin
    
68. digitalWrite(DATA_Pin, LOW);
    
69. digitalWrite(CLK_Pin, LOW);
    
70. s_clk_flag = 0;
    
71. }
    
72. 
    
73. void loop()
    
74. {
    
75. 
    
76. /*
    
77. send16bitData(CmdMode); //set LED Bar mode
    
78. sendLED(0x0155); //send LED Bar data
    
79. latchData(); //make it come into effect
    
80. delay(2000);
    
81. 
    
82. send16bitData(CmdMode); //set LED Bar mode
    
83. sendLED(0x02aa); //send LED Bar data
    
84. latchData(); //make it come into effect
    
85. 
    
86. delay(2000);
    
87. */
    
88. 
    
89. unsigned int i = 0x0000;
    
90. unsigned int loop = 0x0;
    
91. 
    
92. while(i<=0x03ff)
    
93. {
    
94. send16bitData(CmdMode); //set LED Bar mode
    
95. sendLED(i); //send LED Bar data
    
96. latchData(); //make it come into effect
    
97. i=i*2+1;
    
98. delay(100);
    
99. }
    
100. 
     
101. }

复制代码

在编译之前还需要修改位于“myworkingdirectory/arduino/sample”路径的“Makefile”。

1. DIR=$(shell pwd)/../
   
2. 
   
3. INCS = -I.\
   
4. -I$(DIR) \
   
5. -I$(DIR)/hardware \
   
6. -I$(DIR)/hardware/arduino \
   
7. -I$(DIR)/hardware/arduino/cores \
   
8. -I$(DIR)/hardware/arduino/cores/arduino \
   
9. -I$(DIR)/hardware/arduino/variants \
   
10. -I$(DIR)/hardware/arduino/variants/sunxi \
    
11. -I$(DIR)/libraries \
    
12. -I$(DIR)/libraries/Serial \
    
13. -I$(DIR)/libraries/SPI \
    
14. -I$(DIR)/libraries/Wire \
    
15. -I$(DIR)/libraries/LiquidCrystal \
    
16. -I$(DIR)/libraries/ADXL345 \
    
17. -I$(DIR)/libraries/TFTtouch
    
18. 
    
19. LIBS=../libarduino.a
    
20. TARGET=../output/test
    
21. 
    
22. OBJS = paint Motor_shield xbee_relay xbee_shield relay_shield nfc_test drawCircle test sim900 smg \
    
23. io_test adc_test pwm_test spi_test adxl345_test serial_test liquidcrystal_i2c liquidcrystal_spi \
    
24. linker_led_bar_test
    
25. 
    
26. all:
    
27. @mkdir -p $(TARGET)
    
28. for i in $(OBJS); do echo "$(CXX) $(INCS) $$i.c -o $(TARGET)/$$i $(LIBS)"; done
    
29. @for i in $(OBJS); do $(CXX) $(INCS) $$i.c -o $(TARGET)/$$i $(LIBS); done
    
30. 
    
31. clean:
    
32. @for i in $(OBJS); do rm -f $(TARGET)/$$i; done

复制代码

接着需要添加 “linker_led_bar_test”路径到 OBJS。

找到 “sample”目录，输入“make”进行编译。

然后连接Linker LED bar，引脚连接方法：

l GND of LED bar -> GND of pcDuino

l VCC of LED bar -> 3.3V of pcDuino

l DCKI of LED bar ->D1 of pcDuino（TX）

l DI of LED bar -> D0 of pcDuino（RX）

jameswang

顶一个！