PL和PS协同设计实现对OLED的控制
凉凉不冷 Lv4
  2023-03-03 22:31:22 2023-03-03 22:31   2023-03-06 00:41:59      

FPGA学习.PART7

1. 概述

  • 本节涉及到编写AXI总线外设，以及映射到处理器寻址空间最终在处理器系统编程调用。（最基本软硬件协同的操作过程，必须要掌握）可以参考PART3
  • 提供一个可用的OLED逻辑IP以及对应的C函数（记得修改基地址和引脚）

2. 实验步骤

2.1 新建工程文件

建立方式见PART1

IP 核名称自定义，这里写作 my_OLED_ip

选择器件时，可以选择板子，因为预设存储了很多板子的信息，例如DDR配置方法、频率等

2.2 新建IP核

建立方式见PART4

选择创建 AXI4 Peripheral ，如下图

接口类型以及寄存器个数配置如下图，

2.3 新建块设计

流程参考PART2中的 2.2 部分

左侧工作区 IP INTERGRATOR -> Create Block Design，

搜索 OLED （自己命名的 IP 核名称），选择刚才创建的 IP 核，右键点击 Edit in IP Packager 进入编辑界面，如下图所示，

此时会新打开一个 Vivado 用户界面，是针对 IP 核新建的一个工程。

2.4 OLED原理图

OLED原理图如下所示，

  • OLED-RES 硬复位
  • OLED-DC 命令/数据标志（0，读写命令；1，读写数据）

OLED 在四线串口模式下的写时序如下所示，（图源于官方手册）

将原理图与时序图相结合，可以看到 CS# 被直接拉低了，也就是 OLED 是一直有效的，

为了避免初始化时，SDIN/SCLK 产生波动产生干扰，使得 OLED 数据混乱，可以在此时将复位信号拉高，以避免 OLED 显示错误；

2.5 编辑IP核

OLED 所需要的输入信号，都是我们 FPGA 所需要输出的信号，而其中所需要的数据，都能与每位寄存器一一对应，我们打开刚才的 IP 核编辑界面，选择左上角最内层的文件进行编辑，如下图所示，

将如下输出端口，添加到代码中用户添加端口的地方，

1
output OLED_DC, OLED_RES, OLED_SCLK, OLED_SDIN, OLED_VBAT, OLED_VDD,

如下图所示，

我们要使用这6个输出口，可以首先将这六个输出口与第一个寄存器进行连接，

1
assign {OLED_DC, OLED_RES, OLED_SCLK, OLED_SDIN, OLED_VBAT, OLED_VDD} = slv_reg0[5:0];

如下图示，

编辑完毕后，我们再进入外层文件将引脚引出，即在先定义端口（此处为添加 output ）再在实例中写出，如下图所示，实例化代码前面部分为端口名，括号内部为引出的线，

保存并综合，检查是否存在语法错误；

回到 Package IP 界面，将我们所做的改动进行更新，如下图所示，点击下图框中内容以更新改动，让左侧都变成绿色的√，

再点击 Review and Package 进行重新打包与保存。

2.6 创建HDL Wrapper

点击保存后自动退出编辑 IP 核的界面，我们将之前的IP 核删除，再重新添加我们编辑后的IP 核，便成功引入了我们修改后的 IP 核，此时我们在引入一个处理器系统，即 PS，

搜索 ZYNQ 并添加，再点击 Run Block Automation 可以按照板子的预设进行自动连线，如下图所示，

再点击 Run Connetction Autonmation 可以进行自动连接，如下图所示，

由于主控不能直接和外设进行连接（硬件结构决定），要通过一个矩阵开关与外设相连接，包括复位的系统（外设以及矩阵开关的），连接完毕后如下图所示，

由于需要使用上文提到的六位输出，所以要将其引出，选中端口，使用快捷键 Ctrl + T 以引出引脚，若分布较混乱，可以使用 Vivado 自带的重新分布，如下图所示，

保存后回到左上角工作区，点击 Source ，再右击设计并生成 HDL Wrapper（记得选择上方的那一个选项，以方便以后的修改需求），如下图所示，

2.7 创建约束文件

将输出的引脚，指定到板子上对应的引脚（查看用户手册及原理图，用户手册OLED引脚对应表如下所示），

对应引脚，我们添加约束文件，约束内容如下，

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
set_property PACKAGE_PIN  U10  [get_ports {OLED_DC_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_DC_0}]

set_property PACKAGE_PIN  U9  [get_ports {OLED_RES_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_RES_0}]

set_property PACKAGE_PIN  AB12   [get_ports {OLED_SCLK_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_SCLK_0}]

set_property PACKAGE_PIN AA12   [get_ports {OLED_SDIN_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_SDIN_0}]

set_property PACKAGE_PIN  U11  [get_ports {OLED_VBAT_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_VBAT_0}]

set_property PACKAGE_PIN  U12  [get_ports {OLED_VDD_0}]
set_property IOSTANDARD LVCMOS33 [get_ports {OLED_VDD_0}]

至此 PL 部分已经全部编写完毕，我们可以直接生成比特流文件，注意看生成 Warpper之后引脚名称有没有发生变化！！！若有改变，约束文件记得不要写错！

2.8 将硬件信息导入SDK

左上角工具栏，点击 File -> Export -> Export Hardware，如下图所示，再点击 Export 选项下方的 Launch SDK，此时会自动导入刚才的硬件信息，

在 Vivado 左侧工作区 IP INTEGRATOR - > 右上角工作区 Address Editor 可以进行地址的编辑与查看，同样在 SDK 的 system.hdf 中可以看到 我们 IP 核的地址。

2.9 C函数编写

主要包含四个文件：

  • 字库头文件 —- font.h
  • OLED驱动程序 —– oled.c
  • OLED函数头文件 —- oled.h
  • 主函数 —- oled_main.c

函数内容见[附录](#3. 附录)，（驱动函数具体原理不多赘述，如有需要后续再更新OLED的工作方式及其对应的C语言版驱动）

SDK 中左上角，File -> New -> Application Project 新建工程，再在左侧工作区找到我们新建的工程项目以进行软件编写，

copy了代码以后，还不能直接用，因为 OLED_BASE_ADDR （OLED基地址）还和我们所绑定的地址不一样，需要在 oled.h 文件中进行更改，如下图所示，

上方的报错可以直接注释掉，

1
extern int usleep(unsigned int useconds);

此处的六个 #define 即我们在之前设定的输出口，存在着一一对应的关系，即下方的表格

1
assign {OLED_DC, OLED_RES, OLED_SCLK, OLED_SDIN, OLED_VBAT, OLED_VDD} = slv_reg0[5:0];
端口 对应位数
OLED_DC 5
OLED_RES 4
OLED_SCLK 3
OLED_SDIN 2
OLED_VBAT 1
OLED_VDD 0

所以copy的代码此处也要进行更改，

oled_main.c 内的内容仅需要复制到新建项目的主函数处，不要使整个项目中存在两个主函数，

全部都更改并保存后，点击左上角工具栏 Project -> Build All ，编译完毕后就可以上板子了。（编译的时候卡了俩小时也没搞懂是出了什么问题，到处搜解决方案都没有用，最后的解决方案是再来一遍…如果有大佬懂的话欢迎赐教…报错就贴在这里了）（重开解决一切问题）

1
Description	Resource Path Location Type make: *** No rule to make target 'oled.o', needed by 'oled_display.elf'.Stop. oled_display C/C++ Problem

2.10 上板观察

下载PL部分，选择比特流文件路径（存储在 项目名.runs -> impl_1内），将其烧录进入 FPGA，再将 PS 下载进入板内，Run As -> Launch on Hardware，到这里终于结束了！！

看看最终结果，

3. 附录

Tips：按住Ctrl再单击鼠标左键可以快速访问函数

3.1 font.h

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/*
 * font.h
 *
 *  Created on: 2012-12-16
 *      Author: Administrator
 */

#ifndef FONT_H_
#define FONT_H_

//常用ASCII表
//偏移量32
//ASCII字符集
//偏移量32
//大小:12*6
const unsigned char asc2_1206[95][12]={
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*" ",0*/
{0x00,0x00,0x00,0x00,0x3F,0x40,0x00,0x00,0x00,0x00,0x00,0x00},/*"!",1*/
{0x00,0x00,0x30,0x00,0x40,0x00,0x30,0x00,0x40,0x00,0x00,0x00},/*""",2*/
{0x09,0x00,0x0B,0xC0,0x3D,0x00,0x0B,0xC0,0x3D,0x00,0x09,0x00},/*"#",3*/
{0x18,0xC0,0x24,0x40,0x7F,0xE0,0x22,0x40,0x31,0x80,0x00,0x00},/*"$",4*/
{0x18,0x00,0x24,0xC0,0x1B,0x00,0x0D,0x80,0x32,0x40,0x01,0x80},/*"%",5*/
{0x03,0x80,0x1C,0x40,0x27,0x40,0x1C,0x80,0x07,0x40,0x00,0x40},/*"&",6*/
{0x10,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"'",7*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0x80,0x20,0x40,0x40,0x20},/*"(",8*/
{0x00,0x00,0x40,0x20,0x20,0x40,0x1F,0x80,0x00,0x00,0x00,0x00},/*")",9*/
{0x09,0x00,0x06,0x00,0x1F,0x80,0x06,0x00,0x09,0x00,0x00,0x00},/*"*",10*/
{0x04,0x00,0x04,0x00,0x3F,0x80,0x04,0x00,0x04,0x00,0x00,0x00},/*"+",11*/
{0x00,0x10,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*",",12*/
{0x04,0x00,0x04,0x00,0x04,0x00,0x04,0x00,0x04,0x00,0x00,0x00},/*"-",13*/
{0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*".",14*/
{0x00,0x20,0x01,0xC0,0x06,0x00,0x38,0x00,0x40,0x00,0x00,0x00},/*"/",15*/
{0x1F,0x80,0x20,0x40,0x20,0x40,0x20,0x40,0x1F,0x80,0x00,0x00},/*"0",16*/
{0x00,0x00,0x10,0x40,0x3F,0xC0,0x00,0x40,0x00,0x00,0x00,0x00},/*"1",17*/
{0x18,0xC0,0x21,0x40,0x22,0x40,0x24,0x40,0x18,0x40,0x00,0x00},/*"2",18*/
{0x10,0x80,0x20,0x40,0x24,0x40,0x24,0x40,0x1B,0x80,0x00,0x00},/*"3",19*/
{0x02,0x00,0x0D,0x00,0x11,0x00,0x3F,0xC0,0x01,0x40,0x00,0x00},/*"4",20*/
{0x3C,0x80,0x24,0x40,0x24,0x40,0x24,0x40,0x23,0x80,0x00,0x00},/*"5",21*/
{0x1F,0x80,0x24,0x40,0x24,0x40,0x34,0x40,0x03,0x80,0x00,0x00},/*"6",22*/
{0x30,0x00,0x20,0x00,0x27,0xC0,0x38,0x00,0x20,0x00,0x00,0x00},/*"7",23*/
{0x1B,0x80,0x24,0x40,0x24,0x40,0x24,0x40,0x1B,0x80,0x00,0x00},/*"8",24*/
{0x1C,0x00,0x22,0xC0,0x22,0x40,0x22,0x40,0x1F,0x80,0x00,0x00},/*"9",25*/
{0x00,0x00,0x00,0x00,0x08,0x40,0x00,0x00,0x00,0x00,0x00,0x00},/*":",26*/
{0x00,0x00,0x00,0x00,0x04,0x60,0x00,0x00,0x00,0x00,0x00,0x00},/*";",27*/
{0x00,0x00,0x04,0x00,0x0A,0x00,0x11,0x00,0x20,0x80,0x40,0x40},/*"<",28*/
{0x09,0x00,0x09,0x00,0x09,0x00,0x09,0x00,0x09,0x00,0x00,0x00},/*"=",29*/
{0x00,0x00,0x40,0x40,0x20,0x80,0x11,0x00,0x0A,0x00,0x04,0x00},/*">",30*/
{0x18,0x00,0x20,0x00,0x23,0x40,0x24,0x00,0x18,0x00,0x00,0x00},/*"?",31*/
{0x1F,0x80,0x20,0x40,0x27,0x40,0x29,0x40,0x1F,0x40,0x00,0x00},/*"@",32*/
{0x00,0x40,0x07,0xC0,0x39,0x00,0x0F,0x00,0x01,0xC0,0x00,0x40},/*"A",33*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x24,0x40,0x1B,0x80,0x00,0x00},/*"B",34*/
{0x1F,0x80,0x20,0x40,0x20,0x40,0x20,0x40,0x30,0x80,0x00,0x00},/*"C",35*/
{0x20,0x40,0x3F,0xC0,0x20,0x40,0x20,0x40,0x1F,0x80,0x00,0x00},/*"D",36*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x2E,0x40,0x30,0xC0,0x00,0x00},/*"E",37*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x2E,0x00,0x30,0x00,0x00,0x00},/*"F",38*/
{0x0F,0x00,0x10,0x80,0x20,0x40,0x22,0x40,0x33,0x80,0x02,0x00},/*"G",39*/
{0x20,0x40,0x3F,0xC0,0x04,0x00,0x04,0x00,0x3F,0xC0,0x20,0x40},/*"H",40*/
{0x20,0x40,0x20,0x40,0x3F,0xC0,0x20,0x40,0x20,0x40,0x00,0x00},/*"I",41*/
{0x00,0x60,0x20,0x20,0x20,0x20,0x3F,0xC0,0x20,0x00,0x20,0x00},/*"J",42*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x0B,0x00,0x30,0xC0,0x20,0x40},/*"K",43*/
{0x20,0x40,0x3F,0xC0,0x20,0x40,0x00,0x40,0x00,0x40,0x00,0xC0},/*"L",44*/
{0x3F,0xC0,0x3C,0x00,0x03,0xC0,0x3C,0x00,0x3F,0xC0,0x00,0x00},/*"M",45*/
{0x20,0x40,0x3F,0xC0,0x0C,0x40,0x23,0x00,0x3F,0xC0,0x20,0x00},/*"N",46*/
{0x1F,0x80,0x20,0x40,0x20,0x40,0x20,0x40,0x1F,0x80,0x00,0x00},/*"O",47*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x24,0x00,0x18,0x00,0x00,0x00},/*"P",48*/
{0x1F,0x80,0x21,0x40,0x21,0x40,0x20,0xE0,0x1F,0xA0,0x00,0x00},/*"Q",49*/
{0x20,0x40,0x3F,0xC0,0x24,0x40,0x26,0x00,0x19,0xC0,0x00,0x40},/*"R",50*/
{0x18,0xC0,0x24,0x40,0x24,0x40,0x22,0x40,0x31,0x80,0x00,0x00},/*"S",51*/
{0x30,0x00,0x20,0x40,0x3F,0xC0,0x20,0x40,0x30,0x00,0x00,0x00},/*"T",52*/
{0x20,0x00,0x3F,0x80,0x00,0x40,0x00,0x40,0x3F,0x80,0x20,0x00},/*"U",53*/
{0x20,0x00,0x3E,0x00,0x01,0xC0,0x07,0x00,0x38,0x00,0x20,0x00},/*"V",54*/
{0x38,0x00,0x07,0xC0,0x3C,0x00,0x07,0xC0,0x38,0x00,0x00,0x00},/*"W",55*/
{0x20,0x40,0x39,0xC0,0x06,0x00,0x39,0xC0,0x20,0x40,0x00,0x00},/*"X",56*/
{0x20,0x00,0x38,0x40,0x07,0xC0,0x38,0x40,0x20,0x00,0x00,0x00},/*"Y",57*/
{0x30,0x40,0x21,0xC0,0x26,0x40,0x38,0x40,0x20,0xC0,0x00,0x00},/*"Z",58*/
{0x00,0x00,0x00,0x00,0x7F,0xE0,0x40,0x20,0x40,0x20,0x00,0x00},/*"[",59*/
{0x00,0x00,0x70,0x00,0x0C,0x00,0x03,0x80,0x00,0x40,0x00,0x00},/*"\",60*/
{0x00,0x00,0x40,0x20,0x40,0x20,0x7F,0xE0,0x00,0x00,0x00,0x00},/*"]",61*/
{0x00,0x00,0x20,0x00,0x40,0x00,0x20,0x00,0x00,0x00,0x00,0x00},/*"^",62*/
{0x00,0x10,0x00,0x10,0x00,0x10,0x00,0x10,0x00,0x10,0x00,0x10},/*"_",63*/
{0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"`",64*/
{0x00,0x00,0x02,0x80,0x05,0x40,0x05,0x40,0x03,0xC0,0x00,0x40},/*"a",65*/
{0x20,0x00,0x3F,0xC0,0x04,0x40,0x04,0x40,0x03,0x80,0x00,0x00},/*"b",66*/
{0x00,0x00,0x03,0x80,0x04,0x40,0x04,0x40,0x06,0x40,0x00,0x00},/*"c",67*/
{0x00,0x00,0x03,0x80,0x04,0x40,0x24,0x40,0x3F,0xC0,0x00,0x40},/*"d",68*/
{0x00,0x00,0x03,0x80,0x05,0x40,0x05,0x40,0x03,0x40,0x00,0x00},/*"e",69*/
{0x00,0x00,0x04,0x40,0x1F,0xC0,0x24,0x40,0x24,0x40,0x20,0x00},/*"f",70*/
{0x00,0x00,0x02,0xE0,0x05,0x50,0x05,0x50,0x06,0x50,0x04,0x20},/*"g",71*/
{0x20,0x40,0x3F,0xC0,0x04,0x40,0x04,0x00,0x03,0xC0,0x00,0x40},/*"h",72*/
{0x00,0x00,0x04,0x40,0x27,0xC0,0x00,0x40,0x00,0x00,0x00,0x00},/*"i",73*/
{0x00,0x10,0x00,0x10,0x04,0x10,0x27,0xE0,0x00,0x00,0x00,0x00},/*"j",74*/
{0x20,0x40,0x3F,0xC0,0x01,0x40,0x07,0x00,0x04,0xC0,0x04,0x40},/*"k",75*/
{0x20,0x40,0x20,0x40,0x3F,0xC0,0x00,0x40,0x00,0x40,0x00,0x00},/*"l",76*/
{0x07,0xC0,0x04,0x00,0x07,0xC0,0x04,0x00,0x03,0xC0,0x00,0x00},/*"m",77*/
{0x04,0x40,0x07,0xC0,0x04,0x40,0x04,0x00,0x03,0xC0,0x00,0x40},/*"n",78*/
{0x00,0x00,0x03,0x80,0x04,0x40,0x04,0x40,0x03,0x80,0x00,0x00},/*"o",79*/
{0x04,0x10,0x07,0xF0,0x04,0x50,0x04,0x40,0x03,0x80,0x00,0x00},/*"p",80*/
{0x00,0x00,0x03,0x80,0x04,0x40,0x04,0x50,0x07,0xF0,0x00,0x10},/*"q",81*/
{0x04,0x40,0x07,0xC0,0x02,0x40,0x04,0x00,0x04,0x00,0x00,0x00},/*"r",82*/
{0x00,0x00,0x06,0x40,0x05,0x40,0x05,0x40,0x04,0xC0,0x00,0x00},/*"s",83*/
{0x00,0x00,0x04,0x00,0x1F,0x80,0x04,0x40,0x00,0x40,0x00,0x00},/*"t",84*/
{0x04,0x00,0x07,0x80,0x00,0x40,0x04,0x40,0x07,0xC0,0x00,0x40},/*"u",85*/
{0x04,0x00,0x07,0x00,0x04,0xC0,0x01,0x80,0x06,0x00,0x04,0x00},/*"v",86*/
{0x06,0x00,0x01,0xC0,0x07,0x00,0x01,0xC0,0x06,0x00,0x00,0x00},/*"w",87*/
{0x04,0x40,0x06,0xC0,0x01,0x00,0x06,0xC0,0x04,0x40,0x00,0x00},/*"x",88*/
{0x04,0x10,0x07,0x10,0x04,0xE0,0x01,0x80,0x06,0x00,0x04,0x00},/*"y",89*/
{0x00,0x00,0x04,0x40,0x05,0xC0,0x06,0x40,0x04,0x40,0x00,0x00},/*"z",90*/
{0x00,0x00,0x00,0x00,0x04,0x00,0x7B,0xE0,0x40,0x20,0x00,0x00},/*"{",91*/
{0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xF0,0x00,0x00,0x00,0x00},/*"|",92*/
{0x00,0x00,0x40,0x20,0x7B,0xE0,0x04,0x00,0x00,0x00,0x00,0x00},/*"}",93*/
{0x40,0x00,0x80,0x00,0x40,0x00,0x20,0x00,0x20,0x00,0x40,0x00},/*"~",94*/
};
const unsigned char asc2_1608[95][16]={
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*" ",0*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xCC,0x00,0x0C,0x00,0x00,0x00,0x00,0x00,0x00},/*"!",1*/
{0x00,0x00,0x08,0x00,0x30,0x00,0x60,0x00,0x08,0x00,0x30,0x00,0x60,0x00,0x00,0x00},/*""",2*/
{0x02,0x20,0x03,0xFC,0x1E,0x20,0x02,0x20,0x03,0xFC,0x1E,0x20,0x02,0x20,0x00,0x00},/*"#",3*/
{0x00,0x00,0x0E,0x18,0x11,0x04,0x3F,0xFF,0x10,0x84,0x0C,0x78,0x00,0x00,0x00,0x00},/*"$",4*/
{0x0F,0x00,0x10,0x84,0x0F,0x38,0x00,0xC0,0x07,0x78,0x18,0x84,0x00,0x78,0x00,0x00},/*"%",5*/
{0x00,0x78,0x0F,0x84,0x10,0xC4,0x11,0x24,0x0E,0x98,0x00,0xE4,0x00,0x84,0x00,0x08},/*"&",6*/
{0x08,0x00,0x68,0x00,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"'",7*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xE0,0x18,0x18,0x20,0x04,0x40,0x02,0x00,0x00},/*"(",8*/
{0x00,0x00,0x40,0x02,0x20,0x04,0x18,0x18,0x07,0xE0,0x00,0x00,0x00,0x00,0x00,0x00},/*")",9*/
{0x02,0x40,0x02,0x40,0x01,0x80,0x0F,0xF0,0x01,0x80,0x02,0x40,0x02,0x40,0x00,0x00},/*"*",10*/
{0x00,0x80,0x00,0x80,0x00,0x80,0x0F,0xF8,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x00},/*"+",11*/
{0x00,0x01,0x00,0x0D,0x00,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*",",12*/
{0x00,0x00,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80},/*"-",13*/
{0x00,0x00,0x00,0x0C,0x00,0x0C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*".",14*/
{0x00,0x00,0x00,0x06,0x00,0x18,0x00,0x60,0x01,0x80,0x06,0x00,0x18,0x00,0x20,0x00},/*"/",15*/
{0x00,0x00,0x07,0xF0,0x08,0x08,0x10,0x04,0x10,0x04,0x08,0x08,0x07,0xF0,0x00,0x00},/*"0",16*/
{0x00,0x00,0x08,0x04,0x08,0x04,0x1F,0xFC,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00},/*"1",17*/
{0x00,0x00,0x0E,0x0C,0x10,0x14,0x10,0x24,0x10,0x44,0x11,0x84,0x0E,0x0C,0x00,0x00},/*"2",18*/
{0x00,0x00,0x0C,0x18,0x10,0x04,0x11,0x04,0x11,0x04,0x12,0x88,0x0C,0x70,0x00,0x00},/*"3",19*/
{0x00,0x00,0x00,0xE0,0x03,0x20,0x04,0x24,0x08,0x24,0x1F,0xFC,0x00,0x24,0x00,0x00},/*"4",20*/
{0x00,0x00,0x1F,0x98,0x10,0x84,0x11,0x04,0x11,0x04,0x10,0x88,0x10,0x70,0x00,0x00},/*"5",21*/
{0x00,0x00,0x07,0xF0,0x08,0x88,0x11,0x04,0x11,0x04,0x18,0x88,0x00,0x70,0x00,0x00},/*"6",22*/
{0x00,0x00,0x1C,0x00,0x10,0x00,0x10,0xFC,0x13,0x00,0x1C,0x00,0x10,0x00,0x00,0x00},/*"7",23*/
{0x00,0x00,0x0E,0x38,0x11,0x44,0x10,0x84,0x10,0x84,0x11,0x44,0x0E,0x38,0x00,0x00},/*"8",24*/
{0x00,0x00,0x07,0x00,0x08,0x8C,0x10,0x44,0x10,0x44,0x08,0x88,0x07,0xF0,0x00,0x00},/*"9",25*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x0C,0x03,0x0C,0x00,0x00,0x00,0x00,0x00,0x00},/*":",26*/
{0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*";",27*/
{0x00,0x00,0x00,0x80,0x01,0x40,0x02,0x20,0x04,0x10,0x08,0x08,0x10,0x04,0x00,0x00},/*"<",28*/
{0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x00,0x00},/*"=",29*/
{0x00,0x00,0x10,0x04,0x08,0x08,0x04,0x10,0x02,0x20,0x01,0x40,0x00,0x80,0x00,0x00},/*">",30*/
{0x00,0x00,0x0E,0x00,0x12,0x00,0x10,0x0C,0x10,0x6C,0x10,0x80,0x0F,0x00,0x00,0x00},/*"?",31*/
{0x03,0xE0,0x0C,0x18,0x13,0xE4,0x14,0x24,0x17,0xC4,0x08,0x28,0x07,0xD0,0x00,0x00},/*"@",32*/
{0x00,0x04,0x00,0x3C,0x03,0xC4,0x1C,0x40,0x07,0x40,0x00,0xE4,0x00,0x1C,0x00,0x04},/*"A",33*/
{0x10,0x04,0x1F,0xFC,0x11,0x04,0x11,0x04,0x11,0x04,0x0E,0x88,0x00,0x70,0x00,0x00},/*"B",34*/
{0x03,0xE0,0x0C,0x18,0x10,0x04,0x10,0x04,0x10,0x04,0x10,0x08,0x1C,0x10,0x00,0x00},/*"C",35*/
{0x10,0x04,0x1F,0xFC,0x10,0x04,0x10,0x04,0x10,0x04,0x08,0x08,0x07,0xF0,0x00,0x00},/*"D",36*/
{0x10,0x04,0x1F,0xFC,0x11,0x04,0x11,0x04,0x17,0xC4,0x10,0x04,0x08,0x18,0x00,0x00},/*"E",37*/
{0x10,0x04,0x1F,0xFC,0x11,0x04,0x11,0x00,0x17,0xC0,0x10,0x00,0x08,0x00,0x00,0x00},/*"F",38*/
{0x03,0xE0,0x0C,0x18,0x10,0x04,0x10,0x04,0x10,0x44,0x1C,0x78,0x00,0x40,0x00,0x00},/*"G",39*/
{0x10,0x04,0x1F,0xFC,0x10,0x84,0x00,0x80,0x00,0x80,0x10,0x84,0x1F,0xFC,0x10,0x04},/*"H",40*/
{0x00,0x00,0x10,0x04,0x10,0x04,0x1F,0xFC,0x10,0x04,0x10,0x04,0x00,0x00,0x00,0x00},/*"I",41*/
{0x00,0x03,0x00,0x01,0x10,0x01,0x10,0x01,0x1F,0xFE,0x10,0x00,0x10,0x00,0x00,0x00},/*"J",42*/
{0x10,0x04,0x1F,0xFC,0x11,0x04,0x03,0x80,0x14,0x64,0x18,0x1C,0x10,0x04,0x00,0x00},/*"K",43*/
{0x10,0x04,0x1F,0xFC,0x10,0x04,0x00,0x04,0x00,0x04,0x00,0x04,0x00,0x0C,0x00,0x00},/*"L",44*/
{0x10,0x04,0x1F,0xFC,0x1F,0x00,0x00,0xFC,0x1F,0x00,0x1F,0xFC,0x10,0x04,0x00,0x00},/*"M",45*/
{0x10,0x04,0x1F,0xFC,0x0C,0x04,0x03,0x00,0x00,0xE0,0x10,0x18,0x1F,0xFC,0x10,0x00},/*"N",46*/
{0x07,0xF0,0x08,0x08,0x10,0x04,0x10,0x04,0x10,0x04,0x08,0x08,0x07,0xF0,0x00,0x00},/*"O",47*/
{0x10,0x04,0x1F,0xFC,0x10,0x84,0x10,0x80,0x10,0x80,0x10,0x80,0x0F,0x00,0x00,0x00},/*"P",48*/
{0x07,0xF0,0x08,0x18,0x10,0x24,0x10,0x24,0x10,0x1C,0x08,0x0A,0x07,0xF2,0x00,0x00},/*"Q",49*/
{0x10,0x04,0x1F,0xFC,0x11,0x04,0x11,0x00,0x11,0xC0,0x11,0x30,0x0E,0x0C,0x00,0x04},/*"R",50*/
{0x00,0x00,0x0E,0x1C,0x11,0x04,0x10,0x84,0x10,0x84,0x10,0x44,0x1C,0x38,0x00,0x00},/*"S",51*/
{0x18,0x00,0x10,0x00,0x10,0x04,0x1F,0xFC,0x10,0x04,0x10,0x00,0x18,0x00,0x00,0x00},/*"T",52*/
{0x10,0x00,0x1F,0xF8,0x10,0x04,0x00,0x04,0x00,0x04,0x10,0x04,0x1F,0xF8,0x10,0x00},/*"U",53*/
{0x10,0x00,0x1E,0x00,0x11,0xE0,0x00,0x1C,0x00,0x70,0x13,0x80,0x1C,0x00,0x10,0x00},/*"V",54*/
{0x1F,0xC0,0x10,0x3C,0x00,0xE0,0x1F,0x00,0x00,0xE0,0x10,0x3C,0x1F,0xC0,0x00,0x00},/*"W",55*/
{0x10,0x04,0x18,0x0C,0x16,0x34,0x01,0xC0,0x01,0xC0,0x16,0x34,0x18,0x0C,0x10,0x04},/*"X",56*/
{0x10,0x00,0x1C,0x00,0x13,0x04,0x00,0xFC,0x13,0x04,0x1C,0x00,0x10,0x00,0x00,0x00},/*"Y",57*/
{0x08,0x04,0x10,0x1C,0x10,0x64,0x10,0x84,0x13,0x04,0x1C,0x04,0x10,0x18,0x00,0x00},/*"Z",58*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xFE,0x40,0x02,0x40,0x02,0x40,0x02,0x00,0x00},/*"[",59*/
{0x00,0x00,0x30,0x00,0x0C,0x00,0x03,0x80,0x00,0x60,0x00,0x1C,0x00,0x03,0x00,0x00},/*"\",60*/
{0x00,0x00,0x40,0x02,0x40,0x02,0x40,0x02,0x7F,0xFE,0x00,0x00,0x00,0x00,0x00,0x00},/*"]",61*/
{0x00,0x00,0x00,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x00,0x00},/*"^",62*/
{0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01},/*"_",63*/
{0x00,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"`",64*/
{0x00,0x00,0x00,0x98,0x01,0x24,0x01,0x44,0x01,0x44,0x01,0x44,0x00,0xFC,0x00,0x04},/*"a",65*/
{0x10,0x00,0x1F,0xFC,0x00,0x88,0x01,0x04,0x01,0x04,0x00,0x88,0x00,0x70,0x00,0x00},/*"b",66*/
{0x00,0x00,0x00,0x70,0x00,0x88,0x01,0x04,0x01,0x04,0x01,0x04,0x00,0x88,0x00,0x00},/*"c",67*/
{0x00,0x00,0x00,0x70,0x00,0x88,0x01,0x04,0x01,0x04,0x11,0x08,0x1F,0xFC,0x00,0x04},/*"d",68*/
{0x00,0x00,0x00,0xF8,0x01,0x44,0x01,0x44,0x01,0x44,0x01,0x44,0x00,0xC8,0x00,0x00},/*"e",69*/
{0x00,0x00,0x01,0x04,0x01,0x04,0x0F,0xFC,0x11,0x04,0x11,0x04,0x11,0x00,0x18,0x00},/*"f",70*/
{0x00,0x00,0x00,0xD6,0x01,0x29,0x01,0x29,0x01,0x29,0x01,0xC9,0x01,0x06,0x00,0x00},/*"g",71*/
{0x10,0x04,0x1F,0xFC,0x00,0x84,0x01,0x00,0x01,0x00,0x01,0x04,0x00,0xFC,0x00,0x04},/*"h",72*/
{0x00,0x00,0x01,0x04,0x19,0x04,0x19,0xFC,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00},/*"i",73*/
{0x00,0x00,0x00,0x03,0x00,0x01,0x01,0x01,0x19,0x01,0x19,0xFE,0x00,0x00,0x00,0x00},/*"j",74*/
{0x10,0x04,0x1F,0xFC,0x00,0x24,0x00,0x40,0x01,0xB4,0x01,0x0C,0x01,0x04,0x00,0x00},/*"k",75*/
{0x00,0x00,0x10,0x04,0x10,0x04,0x1F,0xFC,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00},/*"l",76*/
{0x01,0x04,0x01,0xFC,0x01,0x04,0x01,0x00,0x01,0xFC,0x01,0x04,0x01,0x00,0x00,0xFC},/*"m",77*/
{0x01,0x04,0x01,0xFC,0x00,0x84,0x01,0x00,0x01,0x00,0x01,0x04,0x00,0xFC,0x00,0x04},/*"n",78*/
{0x00,0x00,0x00,0xF8,0x01,0x04,0x01,0x04,0x01,0x04,0x01,0x04,0x00,0xF8,0x00,0x00},/*"o",79*/
{0x01,0x01,0x01,0xFF,0x00,0x85,0x01,0x04,0x01,0x04,0x00,0x88,0x00,0x70,0x00,0x00},/*"p",80*/
{0x00,0x00,0x00,0x70,0x00,0x88,0x01,0x04,0x01,0x04,0x01,0x05,0x01,0xFF,0x00,0x01},/*"q",81*/
{0x01,0x04,0x01,0x04,0x01,0xFC,0x00,0x84,0x01,0x04,0x01,0x00,0x01,0x80,0x00,0x00},/*"r",82*/
{0x00,0x00,0x00,0xCC,0x01,0x24,0x01,0x24,0x01,0x24,0x01,0x24,0x01,0x98,0x00,0x00},/*"s",83*/
{0x00,0x00,0x01,0x00,0x01,0x00,0x07,0xF8,0x01,0x04,0x01,0x04,0x00,0x00,0x00,0x00},/*"t",84*/
{0x01,0x00,0x01,0xF8,0x00,0x04,0x00,0x04,0x00,0x04,0x01,0x08,0x01,0xFC,0x00,0x04},/*"u",85*/
{0x01,0x00,0x01,0x80,0x01,0x70,0x00,0x0C,0x00,0x10,0x01,0x60,0x01,0x80,0x01,0x00},/*"v",86*/
{0x01,0xF0,0x01,0x0C,0x00,0x30,0x01,0xC0,0x00,0x30,0x01,0x0C,0x01,0xF0,0x01,0x00},/*"w",87*/
{0x00,0x00,0x01,0x04,0x01,0x8C,0x00,0x74,0x01,0x70,0x01,0x8C,0x01,0x04,0x00,0x00},/*"x",88*/
{0x01,0x01,0x01,0x81,0x01,0x71,0x00,0x0E,0x00,0x18,0x01,0x60,0x01,0x80,0x01,0x00},/*"y",89*/
{0x00,0x00,0x01,0x84,0x01,0x0C,0x01,0x34,0x01,0x44,0x01,0x84,0x01,0x0C,0x00,0x00},/*"z",90*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x3E,0xFC,0x40,0x02,0x40,0x02},/*"{",91*/
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00},/*"|",92*/
{0x00,0x00,0x40,0x02,0x40,0x02,0x3E,0xFC,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"}",93*/
{0x00,0x00,0x60,0x00,0x80,0x00,0x80,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x20,0x00},/*"~",94*/
};

#endif /* FONT_H_ */

3.2 oled.c

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
/*
 * oled.c
 *
 *  Created on: 2012-12-16
 *      Author: Administrator
 */

#include "oled.h"
#include "stdlib.h"
#include "font.h"

//SSD1306 OLED 驱动IC驱动代码
//4线串口
//版本:V1.1
//cuter
//2012-12-16

//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
u8 OLED_GRAM[128][8];

//更新显存到LCD
void OLED_Refresh_Gram(void)
{
	u8 i,n;
	for(i=0;i<8;i++)
	{
		write_cmd (0xb0+i);    //设置页地址（0~7）
		write_cmd (0x02);      //设置显示位置—列低地址,偏移了2列
		write_cmd (0x10);      //设置显示位置—列高地址
		for(n=0;n<128;n++)write_data(OLED_GRAM[n][i]);
	}
}



//向SSD1306写入一个字节的命令。
void write_cmd(u8 data)
{
	u8 i;
	Clr_OLED_DC;

	for(i=0;i<8;i++)
	{
		Clr_OLED_SCLK;

		if(data&0x80)
			Set_OLED_SDIN;
		else
			Clr_OLED_SDIN;
		Set_OLED_SCLK;
		data<<=1;
	}

}

//向SSD1306写入一个字节的数据。
void write_data(u8 data)
{
	u8 i;
	Set_OLED_DC;

	for(i=0;i<8;i++)
	{
		Clr_OLED_SCLK;

		if(data&0x80)
			Set_OLED_SDIN;
		else
			Clr_OLED_SDIN;
		Set_OLED_SCLK;
		data<<=1;
	}

}

//开启OLED显示
void OLED_Display_On(void)
{
	write_cmd(0X8D);  //SET DCDC命令
	write_cmd(0X14);  //DCDC ON
	write_cmd(0XAF);  //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
	write_cmd(0X8D);  //SET DCDC命令
	write_cmd(0X10);  //DCDC OFF
	write_cmd(0XAE);  //DISPLAY OFF
	Set_OLED_VDD;
	Set_OLED_VBAT;
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
	u8 i,n;
	for(i=0;i<8;i++)
		for(n=0;n<128;n++)
			OLED_GRAM[n][i]=0X00;
	OLED_Refresh_Gram();//更新显示
}

//画点
//x:0~127
//y:0~63
//t:1 填充 0,清空
void OLED_DrawPoint(u8 x,u8 y,u8 t)
{
	u8 pos,bx,temp=0;

	if(x>127||y>63)
		return;//超出范围了.
	pos=7-y/8;
	bx=y%8;
	temp=1<<(7-bx);

	if(t)
		OLED_GRAM[x][pos]|=temp;
	else
		OLED_GRAM[x][pos]&=~temp;
}

//x1,y1,x2,y2 填充区域的对角坐标
//确保x1<=x2;y1<=y2 0<=x1<=127 0<=y1<=63
//dot:0,清空;1,填充
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot)
{
	u8 x,y;
	for(x=x1;x<=x2;x++)
	{
		for(y=y1;y<=y2;y++)
			OLED_DrawPoint(x,y,dot);
	}
	OLED_Refresh_Gram();//更新显示
}

//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 size,u8 mode)
{
	u8 temp,t,t1;
	u8 y0=y;
	chr=chr-' ';//得到偏移后的值
	for(t=0;t<size;t++)
	{
		if(size==12)temp=asc2_1206[chr][t];  //调用1206字体
		else temp=asc2_1608[chr][t];		 //调用1608字体
		for(t1=0;t1<8;t1++)
		{
			if(temp&0x80)OLED_DrawPoint(x,y,mode);
			else OLED_DrawPoint(x,y,!mode);
			temp<<=1;
			y++;
			if((y-y0)==size)
			{
				y=y0;
				x++;
				break;
			}
		}
	}
}

//m^n函数
u32 mypow(u8 m,u8 n)
{
	u32 result=1;
	while(n--)result*=m;
	return result;
}

//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式	0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size)
{
	u8 t,temp;
	u8 enshow=0;
	for(t=0;t<len;t++)
	{
		temp=(num/mypow(10,len-t-1))%10;
		if(enshow==0&&t<(len-1))
		{
			if(temp==0)
			{
				OLED_ShowChar(x+(size/2)*t,y,' ',size,1);
				continue;
			}else enshow=1;

		}
		OLED_ShowChar(x+(size/2)*t,y,temp+'0',size,1);
	}
}

//显示字符串
//x,y:起点坐标
//*p:字符串起始地址
//用16字体
void OLED_ShowString(u8 x,u8 y,const u8 *p)
{
	#define MAX_CHAR_POSX 122
	#define MAX_CHAR_POSY 58
	while(*p!='\0')
	{
		if(x>MAX_CHAR_POSX){x=0;y+=16;}
		if(y>MAX_CHAR_POSY){y=x=0;OLED_Clear();}
		OLED_ShowChar(x,y,*p,16,1);
		x+=8;
		p++;
	}
}

//初始化SSD1306
void OLED_Init(void)
{
	Clr_OLED_VDD;
	usleep(300);		// 300us
	Clr_OLED_RES;
	usleep(30000);		// 30ms
	Set_OLED_RES;
	usleep(30000);		// 30ms
	Clr_OLED_VBAT;

	write_cmd(0xA8);
		write_cmd(0x3F);

		write_cmd(0xD3);
		write_cmd(0x00);

		write_cmd(0x40);

		write_cmd(0xA0);
		write_cmd(0xC8);

		write_cmd(0xDA);
		write_cmd(0x02);

		write_cmd(0x81);
		write_cmd(0x7F);

		write_cmd(0xA4);
		write_cmd(0xA6);

		write_cmd(0xD5);
		write_cmd(0x80);

		write_cmd(0x8D);
		write_cmd(0x14);

		write_cmd(0xAF);

/*	write_cmd(0xAE); //关闭显示
	write_cmd(0xD5); //设置时钟分频因子,震荡频率
	write_cmd(0x80);   //[3:0],分频因子;[7:4],震荡频率
	write_cmd(0xA8); //设置驱动路数
	write_cmd(0X3F); //默认0X3F(1/64)
	write_cmd(0xD3); //设置显示偏移
	write_cmd(0X00); //默认为0

	write_cmd(0x40); //设置显示开始行 [5:0],行数.

	write_cmd(0x8D); //电荷泵设置
	write_cmd(0x14); //bit2，开启/关闭


	write_cmd(0x20); //设置内存地址模式
	write_cmd(0x02); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
	write_cmd(0xA1); //段重定义设置,bit0:0,0->0;1,0->127;
	write_cmd(0xC0); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
	write_cmd(0xDA); //设置COM硬件引脚配置
	write_cmd(0x12); //[5:4]配置

	write_cmd(0x81); //对比度设置
	write_cmd(0xEF); //1~255;默认0X7F (亮度设置,越大越亮)
	write_cmd(0xD9); //设置预充电周期
	write_cmd(0xf1); //[3:0],PHASE 1;[7:4],PHASE 2;
	write_cmd(0xDB); //设置VCOMH 电压倍率
	write_cmd(0x30); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;

	write_cmd(0xA4); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
	write_cmd(0xA6); //设置显示方式;bit0:1,反相显示;0,正常显示
	write_cmd(0xAF); //开启显示
	OLED_Clear();*/
}
// end of files

3.3 oled.h

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
/*
 * oled.h
 *
 *  Created on: 2012-12-16
 *      Author: Administrator
 */

#ifndef OLED_H_
#define OLED_H_
#include "xil_types.h"				// 数据类型定义
#include "xil_io.h"

extern int usleep(unsigned int useconds);

#define OLED_BASE_ADDR 0X75c00000

#define OLED_DC			0
#define OLED_RES		1
#define OLED_SCLK		2
#define OLED_SDIN		3
#define OLED_VBAT		4
#define OLED_VDD		5
//Xil_Out32(OLED_BASE_ADDR,1<<i);

// DC
#define Set_OLED_DC  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_DC)))
#define Clr_OLED_DC  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_DC))))
// RES
#define Set_OLED_RES  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_RES)))
#define Clr_OLED_RES  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_RES))))

// SCLK
#define Set_OLED_SCLK  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_SCLK)))
#define Clr_OLED_SCLK  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_SCLK))))
// SDIN
#define Set_OLED_SDIN  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_SDIN)))
#define Clr_OLED_SDIN  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_SDIN))))
// OLED_VBAT
#define Set_OLED_VBAT  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_VBAT)))
#define Clr_OLED_VBAT  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_VBAT))))

// OLED_VDD
#define Set_OLED_VDD  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)|(1<<OLED_VDD)))
#define Clr_OLED_VDD  (Xil_Out32(OLED_BASE_ADDR,Xil_In32(OLED_BASE_ADDR)&(~(1<<OLED_VDD))))


//OLED控制用函数
void write_data(u8 data);
void write_cmd(u8 data);
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Refresh_Gram(void);

void OLED_Init(void);
void OLED_Clear(void);
void OLED_DrawPoint(u8 x,u8 y,u8 t);
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot);
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 size,u8 mode);
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size);
void OLED_ShowString(u8 x,u8 y,const u8 *p);

#endif /* OLED_H_ */

3.4 oled_main.c

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
/*
 * helloworld.c: simple test application
 */

#include <stdio.h>
#include "sleep.h"
#include "xil_io.h"
#include "oled.h"

//void print(char *str);


int main()
{
	Xil_Out32(OLED_BASE_ADDR,0xff);
	OLED_Init();			//初始化液晶
	OLED_ShowString(0,0, "MY OLED TEST");
	OLED_ShowString(0,16, "BY SYSCLK.COM");

	OLED_Refresh_Gram();
	
	
	print("hello world\n");

	while(1);	//等待

    return 0;
}
 Comments
  1. FPGA学习.PART7
    1. 1. 概述
    2. 2. 实验步骤
      1. 2.1 新建工程文件
      2. 2.2 新建IP核
      3. 2.3 新建块设计
      4. 2.4 OLED原理图
      5. 2.5 编辑IP核
      6. 2.6 创建HDL Wrapper
      7. 2.7 创建约束文件
      8. 2.8 将硬件信息导入SDK
      9. 2.9 C函数编写
      10. 2.10 上板观察
    3. 3. 附录
      1. 3.1 font.h
      2. 3.2 oled.c
      3. 3.3 oled.h
      4. 3.4 oled_main.c