diff options
author | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-01-19 16:41:29 -0600 |
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committer | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-01-19 16:41:29 -0600 |
commit | 261c210c9c4c1e55103a7af31dfcc539c0e0e5cc (patch) | |
tree | 71840ab97b84dd3f995ea8900b08c98149feac36 /gpio.s | |
parent | 473e52cbe7cbee0333b7d97d91c4bbf95c1b3225 (diff) |
Add subroutine for printing hexadecimal word
Diffstat (limited to 'gpio.s')
-rw-r--r-- | gpio.s | 23 |
1 files changed, 0 insertions, 23 deletions
@@ -1,23 +0,0 @@ -.syntax unified -.cpu cortex-m0plus -.thumb - -.equ RESETS_BASE, 0x4000c000 -.equ RESET_OFST, 0x0 -.equ RESET_DONE_OFST, 0x8 - -.equ ATOMIC_CLEAR, 0x3000 - -.type setup_gpio, %function -.global setup_gpio - -setup_gpio: - ldr r1, =(RESETS_BASE + ATOMIC_CLEAR) - movs r0, 0b1 << 5 // IO_BANK0 - str r0, [r1, RESET_OFST] - ldr r1, =RESETS_BASE -1: - ldr r2, [r1, RESET_DONE_OFST] - tst r2, r0 - beq 1b - bx lr |