LCD驱动芯片——BL55072A驱动程序

初始化子程序：

START

0x7C； I2C子地址

0xEA；ICSET，软件复位芯片

0xC0；MODSET，关显示

0xF0；BLKCTL，关闪烁

0xA3；DISCTL，80Hz Line inversion，High Power mode

0xE8；ICSET，清复位bit1

STOP

显示刷新子程序：

START

0x7C；I2C子地址

0xF0；BLKCTL，关闪烁

0xA3；DISCTL，80Hz Line inversion，High Power mode

0xE8或0xEC；ICSET，显存高位地址为0或1

0xXX；ADSET，设置显存刷新起始地址，通常为0x00，从头开始刷新，此时上一条指令一般为0xE8

…

…

STOP

START

0x7C

0xC8；MODSET，开显示

STOP

最后附上简单的测试程序：

#define Address_BL55072   0x7C

void BL55072_Init(void)

{

uint8_t BL5502_Init_BUFF[5];

BL5502_Init_BUFF[0]= 0xEA;

BL5502_Init_BUFF[1]= 0xC0;

BL5502_Init_BUFF[2]= 0xF0;

BL5502_Init_BUFF[3]= 0xA3;

BL5502_Init_BUFF[4]= 0xE8;

HAL_I2C_Master_Transmit(&hi2c1, Address_BL55072, (uint8_t *)BL5502_Init_BUFF, 5, 100);

}

uint8_t BL5502_BUFF[23];

void SEG_WriteBuffer(uint8_t data)

{

BL5502_BUFF[0]= 0xF0;

BL5502_BUFF[1]= 0xA3;

BL5502_BUFF[2]= 0xE8;

BL5502_BUFF[3]= 0x00;

for(int i=4;i<22;i++) 

{

BL5502_BUFF[i] = data;//

}

HAL_I2C_Master_Transmit(&hi2c1, Address_BL55072, (uint8_t *)BL5502_BUFF, 22, 100);

BL5502_BUFF[0]= 0xC8;

HAL_I2C_Master_Transmit(&hi2c1, Address_BL55072, (uint8_t *)BL5502_BUFF, 1, 100);

}