[原创] 【TI首届低功耗设计大赛】+ 初试 SPI 驱动的 OLED

azhiking 2014-11-18 21:08 楼主

使用MSP430FR5969 驱动SPI接口的OLED。OLED采用SSD1603的驱动芯片。先上图：

显示了中文字符和ＡＳＣＩＩ码

初步测试了一下，ＯＬＥＤ的功耗与其亮度，显示的字符数量等关系比较大，当全部关闭的时候，有uA级别的电流消耗。到目前为止还有画点的驱动尚未完成。下一步还需要完成菜单的制作。 本帖最后由 azhiking 于 2014-11-18 21:08 编辑

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沙发 azhiking

static VOID DRV_SSD1306_SendCmd(UBYTE ucCmd)
{
/* 选择指令通道 */
SSD1306_SelectCmd();
/* 选通LCD模块 */
SSD1306_ActiveLcdSpiCS();
/* 发送命令 */
SSD1306_Send(ucCmd);
/* 封锁LCD模块 */
SSD1306_InactiveLcdSpiCS();
SSD1306_SelectData();
}

static VOID DRV_SSD1306_SendData(UBYTE ucData)
{
/* 选择数据通道 */
SSD1306_SelectData();
/* 选通LCD模块 */
SSD1306_ActiveLcdSpiCS();
/* 发送命令 */
SSD1306_Send(ucData);
/* 封锁LCD模块 */
SSD1306_InactiveLcdSpiCS();
SSD1306_SelectData();
}

static VOID DRV_SSD1306_SetContrast(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0x81); // Set Contrast Control
DRV_SSD1306_SendCmd(ucData); // Default => 0x7F
}

static VOID DRV_SSD1306_SetStartPage(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0xB0 | ucData); // Default => 0xB0 (0x00)
}

static VOID DRV_SSD1306_SetStartLine(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0x40 | ucData); // Set Display Start Line
// Default => 0x40 (0x00)
}

static VOID DRV_SSD1306_SetStartColumn(UBYTE ucData)
{
// Set Lower Column Start Address for Page Addressing Mode
DRV_SSD1306_SendCmd(0x00 + (ucData % 16)); // Default => 0x00
// Set Higher Column Start Address for Page Addressing Mode
DRV_SSD1306_SendCmd(0x10 + (ucData / 16)); // Default => 0x00
}

static VOID DRV_SSD1306_SetDisplayOnOff(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0xAE | ucData); // Set Display On/Off
// Default => 0xAE
// 0xAE (0x00) => Display Off
// 0xAF (0x01) => Display On
}

static VOID DRV_SSD1306_SetEntireDisplay(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0xA4 | ucData); // Set Entire Display On / Off
// Default => 0xA4
// 0xA4 (0x00) => Normal Display
// 0xA5 (0x01) => Entire Display On
}

static VOID DRV_SSD1306_SetInverseDisplay(UBYTE ucData)
{
DRV_SSD1306_SendCmd(0xA6 | ucData); // Set Inverse Display On/Off
// Default => 0xA6
// 0xA6 (0x00) => Normal Display
// 0xA7 (0x01) => Inverse Display On
}

static VOID DRV_SSD1306_FillRam(UBYTE ucData)
{
UBYTE ucLoopi,ucLoopj;
for(ucLoopi = 0; ucLoopi < 8; ucLoopi++)
{
DRV_SSD1306_SetStartPage(ucLoopi);
DRV_SSD1306_SetStartColumn(0x00);
for(ucLoopj = 0; ucLoopj < 128; ucLoopj++)
{
DRV_SSD1306_SendData(ucData);
}
}
}

void DRV_SSD1306_FillBlock(UBYTE ucData, UBYTE a, UBYTE b, UBYTE c, UBYTE d)
{
UBYTE ucLoopi,ucLoopj;
for(ucLoopi = a; ucLoopi <(b+1) ; ucLoopi++)
{
DRV_SSD1306_SetStartPage(ucLoopi);
DRV_SSD1306_SetStartColumn(c);
for(ucLoopj = 0;ucLoopj < d; ucLoopj++)
{
DRV_SSD1306_SendData(ucData);
}
}
}

点赞 2015-1-6 00:10

板凳 azhiking

void DRV_SSD1306_Sleep(UBYTE a)
{
switch(a)
{
case 0:
DRV_SSD1306_SetDisplayOnOff(0x00);
DRV_SSD1306_SetEntireDisplay(0x01);
break;
case 1:
DRV_SSD1306_SetEntireDisplay(0x00);
DRV_SSD1306_SetDisplayOnOff(0x01);
break;
}
}

UWORD DRV_SSD1306_Init(VOID)
{
/* 拉低复位脚 */
BSP_ActiveLcdRst();
BSP_UsDelay(100);
BSP_InactiveLcdRst();
DRV_SSD1306_SetDisplayOnOff(0x00); // Display Off (0x00/0x01)
DRV_SSD1306_SendCmd(0xD5); // Set Clock as 100 Frames/Sec
DRV_SSD1306_SendCmd(0x80);
DRV_SSD1306_SendCmd(0xA8); // 1/64 Duty (0x0F~0x3F)
DRV_SSD1306_SendCmd(0x3F);
DRV_SSD1306_SendCmd(0xD3);// Shift Mapping RAM Counter (0x00~0x3F)
DRV_SSD1306_SendCmd(0x00);
DRV_SSD1306_SendCmd(0x40 | 0x00);// Set Mapping RAM Display Start Line (0x00~0x3F)
DRV_SSD1306_SendCmd(0x8D);// Enable Embedded DC/DC Converter (0x00/0x04)
DRV_SSD1306_SendCmd(0x10 | 0x04);
DRV_SSD1306_SendCmd(0x20);// Set Page Addressing Mode (0x00/0x01/0x02)
DRV_SSD1306_SendCmd(0x02);
DRV_SSD1306_SendCmd(0xA0 | 0x01);// Set SEG/Column Mapping (0x00/0x01)
DRV_SSD1306_SendCmd(0xC0 | 0x08);// Set COM/Row Scan Direction (0x00/0x08)
DRV_SSD1306_SendCmd(0xDA);
DRV_SSD1306_SendCmd(0x02 | 0x10);// Set Sequential Configuration (0x00/0x10)
DRV_SSD1306_SetContrast(0xCF); // Set SEG Output Current
DRV_SSD1306_SendCmd(0xD9); // Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
DRV_SSD1306_SendCmd(0xF1);
DRV_SSD1306_SendCmd(0xDB); // Set VCOM Deselect Level
DRV_SSD1306_SendCmd(0x40);
DRV_SSD1306_SetEntireDisplay(0x00); // Disable Entire Display On (0x00/0x01)
DRV_SSD1306_SetInverseDisplay(0x00); // Disable Inverse Display On (0x00/0x01)
/* set contrast */
DRV_SSD1306_SetContrast(Brightness);
/* 清除显示缓冲区 */
DRV_SSD1306_FillRam(0x00);
DRV_SSD1306_SetDisplayOnOff(0x01); // Display On (0x00/0x01)
//DRV_SSD1306_FillRam(0xFF);
return SYS_NO_ERROR;
}