Tiny6410 bare metal programming -- (2) Assembly light-up led

• The tiny6410 Development Board supports both NAND and SD startup modes.

In my understanding, it means "nc" is not connected. Om [] = 01111, boot_eint [] = 000, refer to the following table to indicate that the SD card is enabled. The switch is not described in the schematic.

• The LED diagram is as follows:

Gpk4, 5, 6, and 7 light-emitting diodes are switched ON when the light-emitting diode is switched on.

• Arm Assembly

MoV command

1: Syntax:

   2:  

   3: MOV{cond}{s} Rd, N

   4:  

5: Send a number to the RD register. N can be a register RM, or an immediate number starting with #, for example:

   6:  

7: before execution:

   8:  

   9: r5=2

  10:  

  11: r7=4

  12:  

  13: MOV r5,r7

  14:  

15: after execution,

  16:  

  17: r5=4

  18:  

  19: r7=4

  20:  

MVN command

1: similar to the mov command, it only returns the source register or the number immediately, and then copies it to the target register.

Tiny6410 bare metal programming -- (2) Assembly light-up led