ESP-mp-01开发板SPI驱动OLED显示

ESP-mp-01开发板SPI驱动OLED显示

ESP8266 SPI对应的引脚为Pin(14)--SCK，Pin(13)--MOSI，Pin(12)--MISO，Pin(16)--CS:

http://www.micropython.org.cn/forum.php?mod=viewthread&tid=421&extra=page%3D1

【2】程序源码：

1. # main.py -- put your code here!
2. 
   
3. import machine
4. from machine import Pin,I2C,SPI
5. import ssd1306
6. import math
7. import time
8. 
   
9. # construct an I2C bus
10. #i2c = I2C(scl=Pin(14), sda=Pin(2), freq=100000)
11. #display = ssd1306.SSD1306_I2C(128,64, i2c)
12. 
    
13. # construct an SPI bus on the given pins
14. # polarity is the idle state of SCK
15. # phase=0 means sample on the first edge of SCK, phase=1 means the second
16. spi = SPI(baudrate=10000000, polarity=1, phase=0, sck=Pin(14,Pin.OUT), mosi=Pin(13,Pin.OUT), miso=Pin(12))
17. display = ssd1306.SSD1306_SPI(128, 64, spi, Pin(5),Pin(4), Pin(16))
18. 
    
19. led_blue = machine.Pin(2, Pin.OUT) # 设置 GPIO2 为输出
20. led_blue.high()
21. 
    
22. try:
23. display.poweron()
24. display.init_display()
25. 
    
26. display.text('ESP-mp SPI OLED',1,1)
27. display.text('Hi, MicroPython!',1,16)
28. display.text('By: hbzjt2012',1,31)
29. 
    
30. # Write display buffer
31. display.show()
32. time.sleep(3)
33. 
    
34. display.fill(0)
35. for x in range(0, 128):
36. display.pixel(x, 32+int(math.sin(x/64*math.pi)*7 + 8), 1)
37. display.show()
38. time.sleep(3)
39. 
    
40. display.fill(0)
41. 
    
42. x = 0
43. y = 0
44. direction_x = True
45. direction_y = True
46. 
    
47. while True:
48. # Clear the previous lines
49. prev_x = x
50. prev_y = y
51. 
    
52. # Move bars
53. x += (1 if direction_x else -1)
54. y += (1 if direction_y else -1)
55. 
    
56. # Bounce back, if required
57. if x == 128:
58. direction_x = False
59. x = 126
60. elif x == -1:
61. direction_x = True
62. x = 1
63. if y == 64:
64. direction_y = False
65. y = 63
66. elif y == -1:
67. direction_y = True
68. y = 1
69. 
    
70. # Draw new lines
71. for i in range(64):
72. display.pixel(prev_x, i, False)
73. display.pixel(x, i, True)
74. for i in range(128):
75. display.pixel(i, prev_y, False)
76. display.pixel(i, y, True)
77. 
    
78. # Make sure the corners are active
79. display.pixel(0, 0, True)
80. display.pixel(127, 0, True)
81. display.pixel(0, 63, True)
82. display.pixel(127, 63, True)
83. 
    
84. # Write display buffer
85. display.show()
86. 
    
87. 
    
88. except Exception as ex:
89. led_blue.low()
90. print('Unexpected error: {0}'.format(ex))
91. display.poweroff()

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【3】效果演示：