dcexpert 发表于 2020-1-27 19:10

OLED显示驱动

<div class='showpostmsg'><p>将OLED驱动完善了一下,可以支持多种字体显示,目前支持:</p>

<ul>
        <li>6x8</li>
        <li>8x16</li>
        <li>12x24</li>
        <li>16x32</li>
</ul>

<p>&nbsp;</p>

<p></p>

<p><strong>驱动程序:</strong></p>

<p>**** Hidden Message *****</p>

<p><br />
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dcexpert 发表于 2020-1-27 19:10

<p>&nbsp;<strong>Demo</strong></p>

<pre>
<code class="language-python">from machine import I2C, Pin
from oled import OLED12864_I2C

i2c = I2C(-1, scl = Pin(27, pull = Pin.PULL_UP), sda = Pin(13, pull = Pin.PULL_UP))

oled = OLED12864_I2C(i2c)
oled.text(0, 0, '0123456789')
oled.Font('Font_8x16')
oled.text(0, 1, '0123456789')
oled.Font('Font_12x24')
oled.text(0, 3, '0123456789')</code></pre>

<p>&nbsp;</p>

lovelds 发表于 2020-2-2 15:09

<p>各路大神各显神通</p>

stategrid 发表于 2020-2-4 16:44

<p>谢谢,特意注册来看看</p>

dcexpert 发表于 2020-2-4 18:28

stategrid 发表于 2020-2-4 16:44
谢谢,特意注册来看看

<p>欢迎一起学习交流</p>

Ediwin 发表于 2020-2-4 19:02

<p>好东西就得收藏</p>

zhnwd 发表于 2020-2-4 23:49

<p>OLED显示驱动 [<a href="javascript:;" onclick="display('subjecthide');display('subjectbox');$('subject').value='RE: OLED显示驱动'">修改</a>]</p>

小莉莉 发表于 2020-2-5 01:17

<table cellpadding="0" cellspacing="0">
        <tbody>
                <tr>
                        <td>
                        <p>好东西就得學習收藏</p>
                        </td>
                </tr>
        </tbody>
</table>

stategrid 发表于 2020-2-8 04:58

<p>对代码的一些解析,我是菜鸟加外行,请大家指教</p>

<p>首先这个屏幕分辨率是128*64,点阵显示方式从def text_6x8看是从左到右,横坐标扫描到128后就转下一行的起点即x=0,y+1.</p>

<p>x &gt; 120而不是 x &gt; 126,我认为是为了避免超出范围?</p>

<p>然后这些显示屏的显示方式是开辟一个缓冲区,有些是在显示屏的控制器,有些是mcu的内存,还有些是两者都有。缓冲区的大小和屏幕一样128*64,即对应屏幕每个点。</p>

<p>通过改写缓冲区,把改写结果送到硬件接口,就可以显示字符。</p>

<p>接下来就是从font里寻找对应的字符位置,看要改写那些内容。这部分代码看不明白</p>

<p>&nbsp; &nbsp; def char_6x8(self, x=0, y=0, ch=32, c=1):<br />
&nbsp; &nbsp; &nbsp; &nbsp; try:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ind = x + y * 128 + 1<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n = (min(127, max(ord(ch), 32)) -32)*5<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for i in range(5):<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; screen = Font_6x8 if c else Font_6x8^0xFF<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; screen = 0 if c else 0xFF<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.set_pos(x, y)<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.i2c.writeto(self.ADDR, b&#39;\x40&#39; + screen)<br />
&nbsp; &nbsp; &nbsp; &nbsp; except:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return</p>

<p>&nbsp; &nbsp;</p>

<p>def text_6x8(self, x=0, y=0, s=&#39;&#39;, c=1, wrap=0):<br />
&nbsp; &nbsp; &nbsp; &nbsp; for i in range(len(s)):<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.char(x, y, s, c)<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; x += 6<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if wrap and x &gt; 120:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; x = 0<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; y += 1</p>

stone528 发表于 2020-2-14 21:39

<p>看看这个好不好用</p>

dcexpert 发表于 2020-2-14 22:03

stategrid 发表于 2020-2-8 04:58
对代码的一些解析,我是菜鸟加外行,请大家指教

首先这个屏幕分辨率是128*64,点阵显示方式从def text_6 ...

<p>使用i2c或spi方式时,因为不能读取oled内部缓存数据,所以需要在外部开一个128x64/8=1024字节的缓冲区。</p>

<p>&nbsp;</p>

<p>因为字体不大,直接放入ram中,速度比较快。如果显示中文,字库较大,最好就放在flash中,或者用专用字库芯片。</p>

hupozhao 发表于 2020-2-17 13:32

<p>厉害了。学习一下</p>

sblpp 发表于 2020-2-18 16:06

<p>谢谢分享</p>

798365837 发表于 2020-2-21 20:18

谢谢大佬,学习学习

TANGYOUQIAN 发表于 2020-2-23 15:47

<table cellpadding="0" cellspacing="0">
        <tbody>
                <tr>
                        <td>
                        <p>好东西就得收藏</p>
                        </td>
                </tr>
        </tbody>
</table>

eon_xyz 发表于 2020-2-23 18:18

<p>学习</p>

qwqwqw2088 发表于 2020-2-23 18:20

<p>看看什么情况</p>

avista 发表于 2020-2-24 17:23

<p>学习</p>

sanxiawu 发表于 2020-2-28 13:20

<p>看看学习下</p>

<p>&nbsp;</p>

raymond88 发表于 2020-3-1 12:19

<p>谢谢楼主分享了</p>
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