T113对接RGB888屏如何使用CAN总线

T113处理器的RGB接口配置为24bit模式RGB888时，CAN总线的IO就被复用为RGB的数据位了。这种方式用不了CAN总线。


此时需要牺牲颜色灰度，让其工作在RGB666模式，如下表：

T113 RGB666	屏RGB888变成RGB666的接线方法：把低3位短接一起
CAN0-TX0
CAN0-RX0
LCD-D2	B2、B1、B0
LCD-D3	B3
LCD-D4	B4
LCD-D5	B5
LCD-D6	B6
LCD-D7	B7
CAN1-TX0
CAN1-RX0
LCD-D10	G2、G1、G0
LCD-D11	G3
LCD-D12	G4
LCD-D13	G5
LCD-D14	G6
LCD-D15	G7
TWI3_SCK
TWI3_SDA
LCD-D18	R2、R1、R0
LCD-D19	R3
LCD-D20	R4
LCD-D21	R5
LCD-D22	R6
LCD-D23	R7

如果屏原来就是RGB666，见下表：

T113 RGB666	屏RGB666
CAN0-TX0
CAN0-RX0
LCD-D2	B2
LCD-D3	B3
LCD-D4	B4
LCD-D5	B5
LCD-D6	B6
LCD-D7	B7
CAN1-TX0
CAN1-RX0
LCD-D10	G2
LCD-D11	G3
LCD-D12	G4
LCD-D13	G5
LCD-D14	G6
LCD-D15	G7
TWI3_SCK
TWI3_SDA
LCD-D18	R2
LCD-D19	R3
LCD-D20	R4
LCD-D21	R5
LCD-D22	R6
LCD-D23	R7

如果屏是RGB565，见下表：

T113 RGB565	屏RGB565
CAN0-TX0
CAN0-RX0
TWI0_SCK
LCD-D3	B3
LCD-D4	B4
LCD-D5	B5
LCD-D6	B6
LCD-D7	B7
CAN1-TX0
CAN1-RX0
LCD-D10	G2
LCD-D11	G3
LCD-D12	G4
LCD-D13	G5
LCD-D14	G6
LCD-D15	G7
TWI3_SCK
TWI3_SDA
TWI0_SDA
LCD-D19	R3
LCD-D20	R4
LCD-D21	R5
LCD-D22	R6
LCD-D23	R7