參考資訊:
https://github.com/xboot/xrock
https://github.com/trebisky/Rockchip
https://wiki.luckfox.com/luckfox-pico/luckfox-pico-quick-start/
https://github.com/steward-fu/website/releases/download/datasheet/rockchip_rv1106_rm.pdf
GPIO0位址
Input Pull-up
Input Data
Direction
main.s
.global _start .equ GPIO0_BASE, 0xFF380000 .equ GPIO1_BASE, 0xFF530000 .equ GPIO0_IOC, 0xFF388000 .equ GPIO1_IOC, 0xFF538000 .equ PA_DAT_L, 0x00 .equ PA_DAT_H, 0x04 .equ PA_DIR_L, 0x08 .equ PA_DIR_H, 0x0c .equ PA_INPUT, 0x30 .equ PA_PULL, 0x38 .equ PA_EXT, 0x70 .arm .text _start: ldr r4, =GPIO0_BASE ldr r5, =GPIO1_BASE ldr r6, =GPIO0_IOC ldr r1, =0xffff0000 str r1, [r4, #PA_DIR_L] ldr r1, =0xffffffff str r1, [r5, #PA_DIR_L] ldr r1, =0xffff0000 | (1 << 8) str r1, [r6, #PA_PULL] ldr r2, =0xffff0000 0: ldr r1, [r4, #PA_EXT] lsr r1, r1, #2 eor r1, r1, #(1 << 2) orr r1, r1, r2 str r1, [r5, #PA_DAT_L] b 0b .end
完成