Command.Parameter应用

参数设置指南
–Set Parameter对象实例=Command对象.CreateParameter(name,type,direction,size, value)
•说明
–Name 参数名称
–Type 参数类型,200表示变长字符串……
–Direction 参数方向, 1表示传入,2表示传出
–Size 参数大小,一般可以省略
–Value 参数的值
 
第二个参数3表示:参数的数据类型。既然是数据类型那肯定有好几种了,是的,这里列了个对应表:

adBigInt: 20 ;

adBinary : 128 ;

adBoolean: 11 ;

adChar: 129 ;

adDBTimeStamp: 135 ;

adEmpty: 0 ;

adInteger: 3 ;

adSmallInt: 2 ;

adTinyInt: 16 ;

adVarChar: 200 ;

根据这个表我们就知道这个3是什么意思了。它就是整型数据类型。对于返回值,它只能取且-1到-99为保留值。

第三个参数4表示参数的类型。它的取值范围是0 ~ 4分别是:

0 : 类型无法确定;1: 输入参数;2: 输入参数;3:输入或输出参数;4: 返回值
//SPI_IO³õʼ»¯ LCD_spi_IO_init(); //LCD_IO³õʼ»¯ LCD_IO_init(); //LCD¸´Î» st7789vm_rest(); //ICÇý¶¯´úÂëÒÆÖ² /* start initial sequence */ st7789vm_write_command(0x36); st7789vm_write_command_parameter(0x00); st7789vm_write_command(0x3A); st7789vm_write_command_parameter(0x05); st7789vm_write_command(0xB2); st7789vm_write_command_parameter(0x0C); st7789vm_write_command_parameter(0x0C); st7789vm_write_command_parameter(0x00); st7789vm_write_command_parameter(0x33); st7789vm_write_command_parameter(0x33); st7789vm_write_command(0xB7); st7789vm_write_command_parameter(0x35); st7789vm_write_command(0xBB); st7789vm_write_command_parameter(0x19); st7789vm_write_command(0xC0); st7789vm_write_command_parameter(0x2C); st7789vm_write_command(0xC2); st7789vm_write_command_parameter(0x01); st7789vm_write_command(0xC3); st7789vm_write_command_parameter(0x12); st7789vm_write_command(0xC4); st7789vm_write_command_parameter(0x20); st7789vm_write_command(0xC6); st7789vm_write_command_parameter(0x0F); st7789vm_write_command(0xD0); st7789vm_write_command_parameter(0xA4); st7789vm_write_command_parameter(0xA1); st7789vm_write_command(0xE0); st7789vm_write_command_parameter(0xD0); st7789vm_write_command_parameter(0x04); st7789vm_write_command_parameter(0x0D); st7789vm_write_command_parameter(0x11); st7789vm_write_command_parameter(0x13); st7789vm_write_command_parameter(0x2B); st7789vm_write_command_parameter(0x3F); st7789vm_write_command_parameter(0x54); st7789vm_write_command_parameter(0x4C); st7789vm_write_command_parameter(0x18); st7789vm_write_command_parameter(0x0D); st7789vm_write_command_parameter(0x0B); st7789vm_write_command_parameter(0x1F); st7789vm_write_command_parameter(0x23); st7789vm_write_command(0xE1); st7789vm_write_command_parameter(0xD0); st7789vm_write_command_parameter(0x04); st7789vm_write_command_parameter(0x0C); st7789vm_write_command_parameter(0x11); st7789vm_write_command_parameter(0x13); st7789vm_write_command_parameter(0x2C); st7789vm_write_command_parameter(0x3F); st7789vm_write_command_parameter(0x44); st7789vm_write_command_parameter(0x51); st7789vm_write_command_parameter(0x2F); st7789vm_write_command_parameter(0x1F); st7789vm_write_command_parameter(0x1F); st7789vm_write_command_parameter(0x20); st7789vm_write_command_parameter(0x23); st7789vm_write_command(0x21); st7789vm_write_command(0x11); st7789vm_write_command(0x29); //¿ª±³¹â LCD_LED_ON; //ÇåÆÁº¯Êý LCD_clear(BROWN);
最新发布
07-13
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